Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 179
e, 18 inches ; weight of waste valve, 50pounds ; diameter of delivery pipe, 4 inches ; height to top of air chamber,V/z feet. 180 Pumps and Hydraulics. Lifts and Cranes. These, as hydraulic machines, areadapted to very many places where other power apparatus istoo slow; they operate on the same… … recedes the chain islengthened, thus, theweight attached tothe end of the chainis raised and lowered.The hydraulic liftin passenger elevatorsoperates upon thesame principle andthis gives an idea of the rapid motion capable of being impartedto the load. It is by the adaptation of hydraulic lifts and…
Hydraulic machinery · Pumping machinery
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