Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 326
am to the main cylinder,reversing the movementof the main piston thereturn stroke of themain piston reverses themovement of the aux-iliary valve, wherebythe port, C, is closed, atthe moment the mainpiston reaches the endof its outer stroke. Theport, C, is opened bythe valve. A, and re-verses the…
Hydraulic machinery · Pumping machinery
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