International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 434
cylinder C by means of a benttube /. The pump pis-ton fits the cylinder ac-curately, and has a valveV opening upwards.At the junction of thetube with the cylinderis another valve Falsoopening upwards. Whenthe piston is raised thevalve V closes, and,since no air can get intothe cylinder from… … PNEUMATICS. 423 space displaced by the piston, the space in the tube / and inthe receiver 7?. The piston is now pushed down, the valve Vcloses, the valve l^ opens, and the air in C escapes. Thelower valve Vis sometimes supported, as shown in Fig. 192,by a metal rod passing through the piston and…
Railroad engineering
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![An illustration from Essai de physique, par Mr. Pierre van Musschenbroek ... avec une description de nouvelles sortes de machines pneumatiques, et un recueil d'expériences par Mr. J. v[an] M[usschenbroek] Traduit du hollandois par Mr. Pierre Massuet .. (1751)](https://img.insideoutlibrary.com/img/200/ia-essaidephysiquep01muss-431-72.webp)
