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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 157

An illustration from 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, leaf 157
537. RAMELLI ROTARY PUMP.—One ofthe earliest (1588). A slotted cylinder with fourwings eccentric to a cylindrical shell. The wingsare pushed out by helical springs. … 538. HEPPEL ROTARY PUMP. —Four wings are jointed concentric with the cylindrical^ shell. A disc and shaft are set eccentric to thecylindrical shell. The wings are linked to theeccentric disc as shown, so that the wings on theupward stroke move faster than the wings movingdownward on the opposite…

Mechanical movements

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