Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 154
534. ROTARY PUMP OR MOTOR.— Can be run in either direction. The shell andwing drum are eccentric. The wings are guidedby projections running in a concentric groovein each head.
Mechanical movements
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