Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 117
ne valve seat,and the other forms the other valve seat. The valves eachconsist of two thicknesses of the oiled silk strip stretchedloosely over the valve seat, and secured by the threadwound around the wooden valve casing. It will, of course. 94 EXPERIMENTAL SCIENCE. be understood that when the… … that the air mav pass through the pump as indicated by thearrow, entering by one valve and escaping by the other. The pieces of rubber tube inclose the valve casings, sothat each valve has a little air-tiarht chamber of its own to GASES. 95 work in. The beveled ends of the rubber tube are…
Physics · Lantern projection · Electric apparatus and appliances
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