Definition of Pneumatic tube. Meaning of Pneumatic tube. Synonyms of Pneumatic tube

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Definition of Pneumatic tube

Pneumatic tube
Pneumatic Pneu*mat"ic, Pneumatical Pneu*mat"ic*al, a. [L. pneumaticus, Gr. ?, fr. ?, ?, wind, air, ? to blow, breathe; cf. OHG. fnehan: cf. F. pneumatique. Cf. Pneumonia.] 1. Consisting of, or resembling, air; having the properties of an elastic fluid; gaseous; opposed to dense or solid. The pneumatical substance being, in some bodies, the native spirit of the body. --Bacon. 2. Of or pertaining to air, or to elastic fluids or their properties; pertaining to pneumatics; as, pneumatic experiments. ``Pneumatical discoveries.' --Stewart. 3. Moved or worked by pressure or flow of air; as, a pneumatic instrument; a pneumatic engine. 4. (Biol.) Fitted to contain air; Having cavities filled with air; as, pneumatic cells; pneumatic bones. Pneumatic action, or Pneumatic lever (Mus.), a contrivance for overcoming the resistance of the keys and other movable parts in an organ, by causing compressed air from the wind chest to move them. Pneumatic dispatch, a system of tubes, leading to various points, through which letters, packages, etc., are sent, by the flow and pressure of air. Pneumatic elevator, a hoisting machine worked by compressed air. Pneumatic pile, a tubular pile or cylinder of large diameter sunk by atmospheric pressure. Pneumatic pump, an air-exhausting or forcing pump. Pneumatic railway. See Atmospheric railway, under Atmospheric. Pneumatic syringe, a stout tube closed at one end, and provided with a piston, for showing that the heat produced by compressing a gas will ignite substances. Pneumatic trough, a trough, generally made of wood or sheet metal, having a perforated shelf, and used, when filled with water or mercury, for collecting gases in chemical operations. Pneumatic tube. See Pneumatic dispatch, above.

Meaning of Pneumatic tube from wikipedia

- Pneumatic tubes (or capsule pipelines, also known as pneumatic tube transport or PTT) are systems that propel cylindrical containers through networks...
- Alfred Ely Beach demonstrated a model of basic pneumatic subway system, in which air pressure in the tube pushed the cars, at the American Institute Exhibition...
- The pneumatic tube mail was a postal system operating in New York City from 1897 to 1953 using pneumatic tubes. Similar systems had arisen in the mid-19th...
- Pneumatics (from Gr**** πνεῦμα pneuma 'wind, breath') is the use of gas or pressurized air in mechanical systems. Pneumatic systems used in industry are...
- A pneumatic weapon is a weapon that fires a projectile by means of air pressure, similar in principle to the operation of pneumatic tube delivery systems...
- The Paris pneumatic post was a pneumatic tube message-carrying service that operated in the French capital from 1866. It was established because of the...
- above companies also made pneumatic tube systems - see Lamson tube. They are still installed in a few shops. Modern pneumatic tube systems are also now used...
- Tiki Room, pneumatics are used to prevent fluid from dripping onto people below the puppets. Once actuated, compressed air enters into the tube at one end...
- pneumatic tube postal service, which existed from 18 November 1865 until 1963 in West Berlin and in East Berlin until 1976. In 1861, a pneumatic tube...
- propulsion. In 1888, Michel Verne, son of Jules Verne, imagined a submarine pneumatic tube transport system that could propel a p****enger capsule at speeds up...