from The Century Dictionary and Cyclopedia
- n. In a steam-engine, the valve which regulates the passage of waste steam from the cylinder; a valve in the eduction-passage of the steam-cylinder of an engine, placed between the cylinder and the air-pump, and operated by the tappet-motion, so as to open shortly after the equilibrium-valve, and admit the steam to the condenser.
- n. Same as exhaust-pallet.
Sorry, no etymologies found.
Near the end of this stroke the exhaust-valve is opened, the products of combustion partly escape, and are partly driven out by the second inward stroke.
One of these magnets closes an exhaust-valve, and the other opens an inlet-valve, in the compressed air tank.
You see, pieces of scale from the inside of the cylinders had wedged against the exhaust-valve seats so that they wouldn't close tight, but leaked and leaked.
"Yuh, piston-ring burnt off and put the exhaust-valve on the blink.