Here you will find one or more explanations in English for the word Lay shaft.
Also in the bottom left of the page several parts of wikipedia pages related to the word Lay shaft and, of course, Lay shaft synonyms and on the right images related to the word Lay shaft.
Lay shaft
Lay shaft Lay shaft, or Layshaft Lay"shaft`, n. (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.
Meaning of Lay shaft from wikipedia