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Mechanical movements, powers, devices and appliances; (1903)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 383

An illustration from Mechanical movements, powers, devices and appliances;, 1903, leaf 383 — -i r z^- It DOOR PUSH CHECK.—The spring closes the piston in the cylinder has a valve to allow quick inlet of air when opening a door, and a small hole adjustable at the bottom of the cylinder for slowly discharging the air. 1545. FOLDING LADDER.—The rounds arepivoted to the side pieces, which are… … 1546. SIMPLE COMBINATION LOCK. —A number of discs arranged on a spindlehaving a feather key. The discs are notchedto match the notches in the key so that theyreadily turn to be set to the register number torelease the spindle.

Mechanical movements

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