Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 178
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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