Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 359
334 CHEMICAL PHYSICS. Pig. 306. They are made to fit exactly the conical openings at,the bottom of the cylinder, and are kept in place by very delicate … Fig. 306. spiral springs. When the piston rises, the ralvc A opens andadmits the air through the tube c a into the cylinder. On theother hand, when the piston descends, the valve A closes, whileB opens, and the air is forced out, through the tube b d, into thereceiver placed at d. It is evident,…
Matter · Heat
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