hide Matching Documents

The documents where this entity occurs most often are shown below. Click on a document to open it.

Document Max. Freq Min. Freq
Harper's Encyclopedia of United States History (ed. Benson Lossing) 3 1 Browse Search
Southern Historical Society Papers, Volume 35. (ed. Reverend J. William Jones) 2 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 1 1 Browse Search
View all matching documents...

Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Putney (United Kingdom) or search for Putney (United Kingdom) in all documents.

Your search returned 1 result in 1 document section:

Knight's Mechanical Encyclopedia (ed. Knight), A. (search)
loyed in condensing the air, minus some friction, leakage, and other incidentals. This form settled down into two classes of machines: 1. Those which were locomotive in their character, as in Bompas's air-driven carriage (English patent, 1828), where air was condensed in tanks and admitted to the alternate ends of a cylinder, which had a reciprocating piston, connected in the usual manner to the crank and drive-shaft. The same device, substantially, was used by Von Rathen in 1848, at Putney, England, where he ran an airlocomotive at the rate of ten or twelve miles an hour. See compressed-air engine. 2. Those in which a body of air is condensed into a reservoir, placed at the bottom of a shaft, or in a situation where the prime motor cannot be set up. In this case the engine in the mine is run by the air from the reservoir during a lull in the force of the prime motor. This was the subject of a patent in England, to Medhurst, 1799. He condensed air to one fifteenth of its volume