Renwick, James, 1790?-1863 · New York, G. & C. & H. Carvill · leaf 157
e Cylinder, by the screwswhich unite the two pieces of which the piston is com-posed. As the packing wears, the screws are turned, andthus the packing, being again compressed, is forced outand again applies itself to the cylinder. This arrangement 150 DOUBLE-ACTING may be better understood by the… … 87. An ingenious mode of tightening the packing withouttaking off the lid of the cylinder was invented by Woolf.The head of each of the screws, is cut into the form of atoothed pinion, and the teeth of all these work in a wheel,having a free motion around the piston-rod. It is there-fore evident…
Steam-engines
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