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AffrictionAffriction Af*fric"tion, n. [L. affricare to rub on. See
Friction.]
The act of rubbing against. [Obs.] Angle of frictionFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Antifriction
Antifriction An`ti*fric"tion, n.
Something to lessen friction; antiattrition. -- a. Tending to
lessen friction.
Anti-friction wheelsFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction ballsFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction brakeFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction chocksFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction clutchFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction compositionFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction couplingFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction drop hammerFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction fuzeFuze Fuze, n.
A tube, filled with combustible matter, for exploding a
shell, etc. See Fuse, n.
Chemical fuze, a fuze in which substances separated until
required for action are then brought into contact, and
uniting chemically, produce explosion.
Concussion fuze, a fuze ignited by the striking of the
projectile.
Electric fuze, a fuze which is ignited by heat or a spark
produced by an electric current.
Friction fuze, a fuze which is ignited by the heat evolved
by friction.
Percussion fuze, a fuze in which the ignition is produced
by a blow on some fulminating compound.
Time fuze, a fuze adapted, either by its length or by the
character of its composition, to burn a certain time
before producing an explosion. Friction gearFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction machineFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction meterFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction powderFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction primerFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction rollersFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction tubeFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. Friction wheelFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. friction wheelsFtiction Ftic"tion, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also friction
wheels.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) A device in which a piece on one shaft or pulley is so
forcibly pressed against a piece on another shaft that
the two will revolve together; as, in the
illustration, the cone a on one shaft, when thrust
forcibly into the corresponding hollow cone b on the
other shaft, compels the shafts to rotate together, by
the hold the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional. FrictionalFrictional Fric"tion*al, a.
Relating to friction; moved by friction; produced by
friction; as, frictional electricity.
Frictional gearing, wheels which transmit motion by surface
friction instead of teeth. The faces are sometimes made
more or less V-shaped to increase or decrease friction, as
required. Frictional gearingFrictional Fric"tion*al, a.
Relating to friction; moved by friction; produced by
friction; as, frictional electricity.
Frictional gearing, wheels which transmit motion by surface
friction instead of teeth. The faces are sometimes made
more or less V-shaped to increase or decrease friction, as
required. Frictional gearingGearing Gear"ing, n.
1. Harness.
2. (Mach.) The parts by which motion imparted to one portion
of an engine or machine is transmitted to another,
considered collectively; as, the valve gearing of
locomotive engine; belt gearing; esp., a train of wheels
for transmitting and varying motion in machinery.
Frictional gearing. See under Frictional.
Gearing chain, an endless chain transmitted motion from one
sprocket wheel to another. See Illust. of Chain wheel.
Spur gearing, gearing in which the teeth or cogs are ranged
round either the concave or the convex surface (properly
the latter) of a cylindrical wheel; -- for transmitting
motion between parallel shafts, etc. Frictionless
Frictionless Fric"tion*less, a.
Having no friction.
Hydrodynamic frictionHydrodynamic Hy`dro*dy*nam"ic, Hydrodynamical
Hy`dro*dy*nam"ic*al, a. [Hydro-, 1 + dynamic, -ical: cf. F.
hydrodynamique.]
Pertaining to, or derived from, the dynamical action of water
of a liquid; of or pertaining to water power.
Hydrodynamic friction, friction produced by the viscosity
of a liquid in motion. Rolling frictionRolling Roll"ing, a.
1. Rotating on an axis, or moving along a surface by
rotation; turning over and over as if on an axis or a
pivot; as, a rolling wheel or ball.
2. Moving on wheels or rollers, or as if on wheels or
rollers; as, a rolling chair.
3. Having gradual, rounded undulations of surface; as, a
rolling country; rolling land. [U.S.]
Rolling bridge. See the Note under Drawbridge.
Rolling circle of a paddle wheel, the circle described by
the point whose velocity equals the velocity of the ship.
--J. Bourne.
Rolling fire (Mil.), a discharge of firearms by soldiers in
line, in quick succession, and in the order in which they
stand.
Rolling friction, that resistance to motion experienced by
one body rolling upon another which arises from the
roughness or other quality of the surfaces in contact.
Rolling mill, a mill furnished with heavy rolls, between
which heated metal is passed, to form it into sheets,
rails, etc.
Rolling press.
(a) A machine for calendering cloth by pressure between
revolving rollers.
(b) A printing press with a roller, used in copperplate
printing.
Rolling stock, or Rolling plant, the locomotives and
vehicles of a railway.
Rolling tackle (Naut.), tackle used to steady the yards
when the ship rolls heavily. --R. H. Dana, Jr. Skin frictionSkin Skin, n. [Icel. skinn; akin to Sw. skinn, Dan. skind, AS.
scinn, G. schined to skin.]
1. (Anat.) The external membranous integument of an animal.
Note: In man, and the vertebrates generally, the skin consist
of two layers, an outer nonsensitive and nonvascular
epidermis, cuticle, or skarfskin, composed of cells
which are constantly growing and multiplying in the
deeper, and being thrown off in the superficial,
layers; and an inner sensitive, and vascular dermis,
cutis, corium, or true skin, composed mostly of
connective tissue.
2. The hide of an animal, separated from the body, whether
green, dry, or tanned; especially, that of a small animal,
as a calf, sheep, or goat.
3. A vessel made of skin, used for holding liquids. See
Bottle, 1. ``Skins of wine.' --Tennyson.
4. The bark or husk of a plant or fruit; the exterior coat of
fruits and plants.
5. (Naut.)
(a) That part of a sail, when furled, which remains on the
outside and covers the whole. --Totten.
(b) The covering, as of planking or iron plates, outside
the framing, forming the sides and bottom of a vessel;
the shell; also, a lining inside the framing.
Skin friction, Skin resistance (Naut.), the friction, or
resistance, caused by the tendency of water to adhere to
the immersed surface (skin) of a vessel.
Skin graft (Surg.), a small portion of skin used in the
process of grafting. See Graft, v. t., 2.
Skin moth (Zo["o]l.), any insect which destroys the
prepared skins of animals, especially the larva of
Dermestes and Anthrenus.
Skin of the teeth, nothing, or next to nothing; the least
possible hold or advantage. --Job xix. 20.
Skin wool, wool taken from dead sheep. Sliding frictionSliding Slid"ing, a.
1. That slides or slips; gliding; moving smoothly.
2. Slippery; elusory. [Obs.]
That sliding science hath me made so bare.
--Chaucer.
Sliding friction (Mech.), the resistance one body meets
with in sliding along the surface of another, as
distinguished from rolling friction.
Sliding gunter (Naut.), a topmast arranged with metallic
fittings so as to be hoisted and lowered by means of
halyards.
Sliding keel (Naut), a movable keel, similar to a
centeboard.
Sliding pair. (Mech.) See the Note under Pair, n., 7.
Sliding rule. Same as Slide rule, under Slide, n.
Sliding scale.
(a) A scale for raising or lowering imposts in proportion
to the fall or rise of prices.
(b) A variable scale of wages or of prices.
(c) A slide rule.
Sliding ways (Naut.), the timber guides used in launching a
vessel.
Meaning of Frictio from wikipedia
