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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 176

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 176
629. FABRY ROTARY BLOWER. —Two wheels of three teeth each ro-tate in a two-part cylindrical case. Theteeth on and near the line joining the axismesh alternately for a part of a revolu-tion, so as to make a continuous clos-ure to the passage of air between thewheels. … 630. ROOT ROTARY BLOWER. An early form. Has been also usedas a pump.

Mechanical movements

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