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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 381

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 381
1543. MEAN TIME SUNDIAL.—Thelength of the stile is made to just cover theentire range of the suns altitude at the dis-tance of the scale on the hour circle. Itsshape and size to be proportionate to the sunsequation of time as marked on the scale.When the sun is fast the reading should be onthe… … 1544. DOOR PUSH CHECK.—The spring closes the door. 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. n >u 1545. FOLDING LADDER.—The rounds arepivoted to the side…

Mechanical movements

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