Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 76
ial tension of the spring upon open-ing the valve, thus causing the valve to open widewithout increase of boiler pressure. 218. SAFETY VALVE.—Leveris of the third order. A, Short lever ;B, centre of gravity of lever from ful-crum ; C, distance of weight from ful-crum ; S, diameter of valve; P,… … 219. ORIGINAL FORM of the ^olipile or HerosSteam Engine, 130 B.C. A reaction power, suitablefor operation by the use of any gaseous or fluid pressure. The original type of several modern motors. 220. STEEPLE ENGINE, with cross-headand slides. 68 STEAM POWER.
Mechanical movements
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