SHAFT n.
), a main shaft of considerable length, in a shop or factory, usually bearing a number of pulleys by which machines are driven, commonly by means of countershafts; -- called also line, or main line. -- Shaft alley (Naut.), a passage extending from the engine room to the stern, and containing the propeller shaft. -- S…
SHEAVE n.
e in the rim for a rope to work in, and set in a block, mast, or the like; the wheel of a pulley. Sheave hole, a channel cut in a mast, yard, rail, or other timber, in which to fix a sheave.
SPLIT a.
pin with one end split so that it may be spread open to secure it in its place. -- Split pulley, a parting pulley. See under Pulley. -- Split ring, a ring with overlapped or interlocked ends which may be sprung apart so that objects, as keys, may be strung upon the ring or removed from it. -- Split ticket, a ballot…