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 transport fluids. In the late 19th and early 20th centuries, pneumatic tube networks gained acceptance in offices that needed to transport small, urgent packages, such as mail, other paperwork, or money, over relatively short distances, within a building or, at most, within a city. Some installations became quite complex, but have mostly been superseded. However, they have been further developed in the 21st century in places such as hospitals, to send blood samples and the like to clinical laboratories for analysis.[1]
A small number of pneumatic transportation systems were built for larger cargo, to compete with train and subway systems. However, they never gained popularity.
^Wykes, Sara (2010-01-11). "Gone with the wind: Tubes are whisking samples across hospital". Stanford School of Medicine. Retrieved 12 February 2010.
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 pneumatictube mail was a postal system operating in New York City from 1897 to 1953 using pneumatictubes. Similar systems had arisen in the mid-19th...
The Paris pneumatic post was a pneumatictube message-carrying service that operated in the French capital from 1866. It was established because of the...
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...
Office commissioned two engineers to investigate the feasibility of a pneumatictube-based system between the General Post Office and the West District Central...
A pneumatic weapon is a weapon that fires a projectile by means of air pressure, similar in principle to the operation of pneumatictube delivery systems...
above companies also made pneumatictube systems - see Lamson tube. They are still installed in a few shops. Modern pneumatictube systems are also now used...
An inner tube is an inflatable torus that forms the interior of some pneumatic tires. The tube is inflated with a valve stem, and fits inside of the casing...
component of vehicular tires Pneumatictube, a method of transportation using compressed air Shipping tube (or mailing tube) – container unit. Structural...
propulsion. In 1888, Michel Verne, son of Jules Verne, imagined a submarine pneumatictube transport system that could propel a passenger capsule at speeds up...
known as pneumatic refuse collection, or automated vacuum collection (AVAC), transports waste at a high speed through underground pneumatictubes to a collection...
Acoustic tube headphones (also called pneumatic earphones or air earphones) are used especially in two-way radio. These are useful because a clear tube can...
carrier systems for shops including cash ball, wire and pneumatictube systems and of pneumatictube systems for other applications. The Lamson Cash Carrier...
Prague pneumatic post (Czech: Pražská potrubní pošta) is the world's last preserved municipal pneumatic post system. It is an underground system of metal...
of a pneumatic pump cylinder with a hand-operated piston to force air through an air nozzle in the front. Below the front of the pneumatictube hangs...
adhered to the pavement in the center of a driving lane, unlike the pneumatictube detector which cannot differentiate between lanes. Recently, off-road...
standards, and avoiding changes to the ecology along its routes." The pneumatictube, using high pressures behind a capsule to move it forward, was suggested...
cornerstone; the building was completed in March 1961. It included a pneumatictube system manufactured by Lamson Corporation of Syracuse, New York. Though...
of Pneumatic Railway Tube", The Times, London, p. 1, 28 October 1864 IanVisits (23 February 2007). "IanVisits… » The Waterloo and Whitehall Pneumatic Railway"...
message in a bottle virtual assistant teletex remote data transmission pneumatictube two-way radio, radiotelephones computer terminals satellite radio carrier...
materials, with the exception of the stained glass, door locks, and pneumatictube system. The construction of the building for the old Diet of Japan began...
Station. Beach created his own enterprise using the pneumatictube technology, naming it the Beach Pneumatic Transit Company, and made himself its President...
Commonwealth English) is a pneumatic tire that does not require a separate inner tube. Unlike pneumatic tires which use a separate inner tube, tubeless tires have...
Gettysburg. United States of America: Stackpole Books. pp. 5, 6, 9, 216. Pneumatic-tube Service: Hearing Before the Committee on the Post Offices and Post Roads...
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