Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 505
mployed for jamming and lockinc the block, and it works into a large cylindricalnut let into a socket made in the broad end of the large block. A portion of the thread of this 484 ORDNANCE, CONSTRUCTION OF. screw is cut away, so that as it is turned the thread may either engage or disengage with… … back of the ring come into close contact, and from their form it is impossible that either can be dis-placed. The ritling is polygroove, and a slightly different twist is given to the sides of the grooves,being 1 turn in 64 ft. 2 in. on one side, and 1 turn in 64 ft. 10 in. on the other, thus…
Mechanical engineering -- Dictionaries
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