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An intermediate shaft; esp., one which receives motion from a line shaft in a factory and transmits it to a machine.

the longitudinal crank shaft drives the rear wheels through a clutch, change-speed gear, countershaft, and two parallel side chains, in order.

y, 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. -- Shaft furnace (Metal.), a furnace, in the form of a chimney,…