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A pneumatic tube system in Washington, D.C., in 1943. Pneumatic tubes (or capsule pipelines, also known as pneumatic tube transport or PTT) are systems that propel cylindrical containers through networks of tubes by compressed air or by partial vacuum. They are used for transporting solid objects, as opposed to conventional pipelines which ...
Pneumatics (from Greek πνεῦμα pneuma 'wind, breath') is the use of gas or pressurized air in mechanical systems. Pneumatic systems used in industry are commonly powered by compressed air or compressed inert gases. A centrally located and electrically-powered compressor powers cylinders, air motors, pneumatic actuators, and other ...
On 20 January 1937, the Lamson Engineering Company Ltd was incorporated as a merger of the Lamson Store Service Co Ltd and Lamson Pneumatic Tube Co Ltd. In 1973, the firm was promoting its "Rallypost" system with PVC track and battery-operated carriers that could carry up to 6 kg. [4] This was designed as an office document carrier.
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 century in London, via the London Pneumatic Despatch Company; in Manchester and other British cities; and in Paris via the Paris pneumatic post.
An automated vacuum waste collection system, also known as pneumatic refuse collection, or automated vacuum collection (AVAC), transports waste at high speeds through underground pneumatic tubes to a collection station where the waste is compacted and sealed in containers. Full containers are transported away to be emptied.
The increasing use of telephone and telex systems also reduced the attractiveness of the pneumatic message. [6] The use of the network declined to 4 million messages sent in 1960; 2.7 million in 1972 and just 648,000 in 1982. [21] The original metal tubes were gradually replaced by PVC from 1965. This reduced the vulnerability of the network to ...
An air line is a tube, or hose, that contains and carries a compressed air supply. In industrial usage, this may be used to inflate car or bicycle tyres or power tools worked by compressed air, for breathing apparatus in hazardous environments and to operate many other pneumatic systems.
Both use three major components for each key and stop: a valve (within the console), a pneumatic motor, commonly called a 'pneumatic' (within the windchest), and a lead tube that connects them. In the pressure system, the air in the tube and the pneumatic are normally at atmospheric pressure.