Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox (1914)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 380
1531/. REFLECTING DRAW-ING BOARD.—A vertical plate ofglass in a frame on a drawing board.The picture on one side and a plainsheet of paper on the other side ofthe glass. On looking into theglass on one side the picture isplainly projected on the other, andcan be readily traced with a pencil. … 1531^. SELF REGIS-TERING BAROMETER.—Four aneroid disks are con-nected in series and in contactwith the lever R and linked tothe index lever L, its endholding a pencil that marksthe variation of pressure on fhe graduated paper on a drum driven by a clock. 370 DRAUGHTING DEVICES. 1531/z. DOTTING…
Mechanical movements
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