Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 116
; and some stoutthread. The piece of one inch rubber tube is cut diagonally at anangle of about 30, so as to divide it into two similar pieces.The wooden valve casing is pierced longitudinally with a GASES. 93 one-sixteenth inch hole and transversely with a hole A inchsquare, and thoroughly… … Testing Simple Air Pump. which the one-sixteenth hole enters forms one 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,…
Physics · Lantern projection · Electric apparatus and appliances
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