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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 121

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 121
417. AUTOMATIC RELIEF VALVE.—Thevalve is kept closed by a crank attachment to thespindle and weighted lever outside. Excess of press-ure raises the stem and discs, throttling the passageof steam and relieving the back pressure. … 418. HORIZONTAL SWING CHECKVALVE.—The disc is loose in the swingframe and may be reground tight by a socketwrench passed through the plug opening.

Mechanical movements

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