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A machine for measuring at any moment velocity of rotation, as of a wheel of a steam engine. Knight.

The chamber of a steam engine in which the piston is moved by the force of steam.

A pneumatic or hydraulic cushion for a falling weight, as in the valve gear of a steam engine, to prevent shock.

to it; a mechanical drawing, as distinguished from an artistical one. Indicator diagram. (Steam Engine) See Indicator card, under indicator

as one part upon another, without the intervention of other working parts. Direct-acting steam engine, one in which motion is transmitted to the crank without the intervention of a beam or lever; -- also called direct-action steam engine. -- Direct-acting steam pump, one in which the steam piston rod is directly conn…

In owls, the space around the eyes. Disk engine, a form of rotary steam engine. -- Disk shell (Zoöl.), any species of Discina.

through, or weight of steam, water, etc., displaced, in a given time, by the piston of a steam engine or pump.

led also Zamboni's , from the names of the two earliest constructors of it. -- Dry pipe (Steam Engine), a pipe which conducts dry steam from a boiler. -- Dry plate (Photog.), a glass plate having a dry coating sensitive to light, upon which photographic negatives or pictures can be made, without moistening. -- Dry-p…

Pertaining to an eccentric; as, the eccentric rod in a steam engine.

A jet jump for lifting water or withdrawing air from a space. Ejector condenser (Steam Engine), a condenser in which the vacuum is maintained by a jet pump.

One who manages as engine, particularly a steam engine; an engine driver.

captain, and engineer in chief, ranking with commodore and having charge of the Bureau of Steam Engineering.

mind between motives or reasons, with consequent indecision and doubt. Equilibrium valve (Steam Engine), a balanced valve. See under Valve.

s), a pipe for carrying away steam that escapes through a safety valve. -- Escape valve (Steam Engine), a relief valve; a safety valve. See under Relief, and Safety. -- Escape wheel (Horol.), the wheel of an escapement.

e hydrocarbon as the base; an ester. -- Ether engine (Mach.), a condensing engine like a steam engine, but operated by the vapor of ether instead of by steam.

out of a place, as out of a room in ventilating it. -- Exhaust nozzle, Exhaust orifice (Steam Engine), the blast orifice or nozzle. -- Exhaust pipe (Steam Engine), the pipe that conveys exhaust steam from the cylinder to the atmosphere or to the condenser. Exhaust port (Steam Engine), the opening, in the cylinder or…

g a locomotive frame to the boiler while allowing lengthwise motion. -- Expansion valve (Steam Engine), a cut-off valve, to shut off steam from the cylinder before the end of each stroke.

e; -- also called a riser, deadhead, or simply feed or head Knight. -- Feed heater. (a) (Steam Engine) A vessel in which the feed water for the boiler is heated, usually by exhaust steam. (b) A boiler or kettle in which is heated food for stock. -- Feed motion, or Feed gear (Mach.), the train of mechanism that gives…

A man who tends the fires, as of a steam engine; a stocker.

a, where the power communicated, or the resistance to be overcome, is variable, as in the steam engine or the coining press. See Fly wheel (below).