-
longer refers to multiple-V-belt
drive alone. A multi-groove, V-ribbed, or
polygroove belt[full
citation needed] is made up of
usually between 3 and 24 V-shaped...
- length: 96 in (2,400 mm).
Length of bore: 62 in (1,600 mm). Rifling:
Polygroove,
plain section, 54.84 in (1,392.94 mm),
uniform twist 1 in 30 in (760 mm)...
- mechanism: 97 tons 3cwt.
Weight of
breech mechanism: 2 tons 17cwt. Rifling:
polygroove, 76 grooves,
uniform right-hand
twist of one turn in 30 calibres. This...
- compression, a breech-piece, and a
trunnion ring. The guns'
rifling was on the "
polygroove" system; the bore of the gun had 38
grooves along its
length with a twist...
-
reliably detectable and so the
observance of
service lifetimes is important.
Polygroove belt "Huco
Timing Belts and Pulleys". Huco Dynatork. US
patent 5807194...
-
broad shallow rifling grooves,
compared to the many sharp-edged
grooves ("
polygroove") of the
Armstrong system. They were
hence referred to as "Woolwich" guns...
-
facilitated a
switch to the
second generation of RML guns
which used
polygroove rifling and only
supported studless ammunition. The
first RML
heavy guns...
- tons 2 cwt 84 lbs.
Weight of
breech mechanism: 1 ton 17 cwt. Rifling:
polygroove, 72
grooves plain section,
uniform right-hand
twist of 1 turn in 30 calibres...
-
incorporate these changes. This was a second-generation RML gun,
equipped with
polygroove rifling and
firing only
studless ammunition with
automatic gas-checks...
- sides. To
increase accuracy the old
barrels were
relined and
given modern polygroove rifling : 27
grooves with a
twist increasing from 1 turn in 100 calibres...
