Lay shaft

n.1.(Mach.) A secondary shaft, as in a sliding change gear for an automobile; a cam shaft operated by a two-to-one gear in an internal-combustion engine. It is generally a shaft moving more or less independently of the other parts of a machine, as, in some marine engines, a shaft, driven by a small auxiliary engine, for independently operating the valves of the main engine to insure uniform motion.
References in periodicals archive ?
The yellow shaft joined to the lay shaft so it is affected by wheel spin
Tenders are invited for Lay Shaft Assembly Part No.
Tenders are invited for Lay Shaft Laser Beam Alignment As Per Specification Attached.
Lay shafts on floor and weld the piece that looks like Fig.