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An engine moved by steam.

nt on the atmosphere. [R.] In am so atmospherical a creature. Pope. Atmospheric engine, a steam engine whose piston descends by the pressure of the atmosphere, when the steam which raised it is condensed within the cylinder. Tomlinson. -- Atmospheric line (Steam Engin.), the equilibrium line of an indicator card. Stea…

ines (using volatile inflammable liquids, as gasoline or petrol, alcohol, naphtha, etc.), steam engines, or electric motors. The power of the driving motor varies from about 4 to 50 H. P. for ordinary vehicles, ranging from the run-about to the touring car, up to as high as 200 H. P. for specially built racing cars. Au…

and outer faces of a wall, or upon the haunches of an arch or vault. -- Back pressure. (Steam Engine) See under Pressure. -- Back rest, a guide attached to the slide rest of a lathe, and placed in contact with the work, to steady it in turning. -- Back slang, a kind of slang in which every word is written or pronou…

s, and security. It [piety] is the right ballast of prosperity. Barrow. Ballast engine, a steam engine used in excavating and for digging and raising stones and gravel for ballast. -- Ship in ballast, a ship carring only ballast.

the rear of the vent. -- Base plate, the foundation plate of heavy machinery, as of the steam engine; the bed plate. -- Base ring (Ordnance), a projecting band of metal around the breech, connected with the body of the gun by a concave molding. H. L. Scott.

eel or pencil points; -- used for drawing or describing large circles. -- Beam engine, a steam engine having a working beam to transmit power, in distinction from one which has its piston rod attached directly to the crank of the wheel shaft. -- Before the beam (Naut.), in an arc of the horizon included between a lin…

The exhaust pipe of a steam engine, or any pipe delivering steam or air, when so constructed as to cause a blast.

An apparatus for testing the power of a steam engine, or other motor, by weighing the amount of friction that the motor will overcome; a friction brake.

ing of wood, etc., to prevent radiation of heat, as from the boiler, cylinder. etc., of a steam engine.

another, as the distance between the piston and cylinder head at the end of a stroke in a steam engine, or the least distance between the point of a cogwell tooth and the bottom of a space between teeth of a wheel with which it engages. Clearance space (Steam engine), the space inclosed in one end of the cylinder, betw…

s of (a thing) fall in together, or be crushed in together; as, a flue in the boiler of a steam engine sometimes collapses. A balloon collapses when the gas escapes from it. Maunder.

combined according to regular laws of composition. -- Compound engine (Mech.), a form of steam engine in which the steam that has been used in a high-pressure cylinder is made to do further service in a larger low-pressure cylinder, sometimes in several larger cylinders, successively. -- Compound ether. (Chem.) See u…

lly with addition of sugar) for preservation and transportation. -- Condensing engine, a steam engine in which the steam is condensed after having exerted its force on the piston.

n which the exhaust steam is condensed by the action of cold water or air. See Illust. of Steam engine. Achromatic condenser (Optics), an achromatic lens used as a condenser. -- Bull's-eye condenser, or Bull's-eye (Optics), a lens of short focal distance used for concentrating rays of light. -- Injection condenser, a…

sp. a rod connecting a crank wrist with a beam, crosshead, piston rod, or piston, as in a steam engine.

id crosspiece running between parallel slides, which receives motion from the piston of a steam engine and imparts it to the connecting rod, which is hinged to the crosshead.

a mass of steam in the end of the cylinder of a steam engine to receive the impact of the piston;

rupt; as, to cut off communication; to cut off (the flow of) steam from (the boiler to) a steam engine. (d) To intercept; as,, to cut off an enemy's retreat.

The valve gearing or mechanism by which steam is cut off from entering the cylinder of a steam engine after a definite point in a stroke, so as to allow the remainder of the stroke to be made by the expansive force of the steam already let in. See Expansion gear, under Expansion.