Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 383
he water. There is also a self-actingarrangement by which, when these plungers have moved to the extent of HYDRA ULIC PO WER. 335 their range in either direction, the valves are closed. The chain of thecrane rests on guide pulleys, and passing over the pulley u, goes down thecentre of the… … Fig. 169.—Sir W. Armstrongs Hydraulic Crane. plunger of the lifting cylinder comes i ft. out, 6 ft. of chain pass over theguide pulley, u. The plunger, when near the end of its stroke in eitherdirection, is made to move a bar—not shown—which closes the valve.When the crane is loaded, the load is…
Inventions
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