Rock shaft Mach. A shaft that oscillates on its journals, instead of revolving, -- usually carrying levers by means of which it receives and communicates reciprocating motion, as in the valve gear of some steam engines; -- called also rocker, rocking shaft, and way shaft.
◄ ►
Way shaft
1. Mach. A rock shaft.
2. Mining An interior shaft, usually one connecting two levels.
◄ ►