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Triple crown, the crown, or tiara, of the pope. See Tiara, 2. -- Triple-expansion steam engine, a compound steam engine in which the same steam performs work in three cylinders successively. -- Triple measure (Mus.), a measure of tree beats of which first only is accented. -- Triple ratio (Math.), a ratio which is…

A large pipe forming the piston rod of a steam engine, of sufficient diameter to allow one end of the connecting rod to be attached to the crank, and the other end to pass within the pipe directly to the piston, thus making the engine more compact.

In a single-acting engine, an elongated hollow piston, open at the end, in which the end of the connecting rod is pivoted. The piston rod, crosshead and stuffing box are thus dispensed with.

Provided with trunnions; as, the trunnioned cylinder of an oscillating steam engine.

ing and boring large work. -- Turning bridge. See the Note under Drawbridge. -- Turning engine, an engine lathe. -- Turning lathe, a lathe used by turners to shape their work. -- Turning pair. See the Note under Pair, n. -- Turning point, the point upon which a question turns, and which decides a case.…

ly moved on wheels, and employed in approaching a fortified place, for carrying soldiers, engines, ladders, casting bridges, and other necessaries.

A two-stroke cycle for an internal-combustion engine. --Two"- cy`cle, a.

Used with both hands; as, a two-nanded sword. That two-handed engine [the sword]. Milton.

Having two ports; specif.: Designating a type of two-cycle internal-combustion engine in which the admission of the mixture to the crank case is through a suction valve.

he like, as the elastic pipe of a tender connecting it with the feed pipe of a locomotive engine; especially, a pipe fitting for connecting pipes, or pipes and fittings, in such a way as to facilitate disconnection.

he gram, it is called the gram degree. The British unit of heat, or thermal unit, used by engineers in England and in the United States, is the quantity of heat necessary to raise one pound of pure water at and near its temperature of greatest density (39.1º Fahr.) through one degree of the Fahrenheit scale. Rankine.…

uction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch. Vacuum brake, a kind of continuous brake operated by exhausting the air from some appliance under each ca…

and without. -- Valve chest (Mach.), a chamber in which a valve works; especially (Steam Engine), the steam chest; -- called in England valve box, and valve casing. See Steam chest, under Steam. -- Valve face (Mach.), that part of the surface of a valve which comes in contact with the valve seat. -- Valve gear, or V…

, or when compared with air and multiplied by 28.8, gives the molecular weight. -- Vapor engine, an engine worked by the expansive force of a vapor, esp. a vapor other than steam.

An inclosing part of a receptacle or vessel; as, the walls of a steam-engine cylinder.

antity of water, or for indicating the height of its surface, as in the boiler of a steam engine. See Gauge.

A water engine.

nonite so named from the shape of its twin crystals. See Bournonite. -- Wheel pit (Steam Engine), a pit in the ground, in which the lower part of the fly wheel runs. -- Wheel plow, or Wheel plough, a plow having one or two wheels attached, to render it more steady, and to regulate the depth of the furrow. -- Wheel p…

eed; to gyrate. "The whirling year vainly my dizzy eyes pursue." J. H. Newman. The wooden engine flies and whirls about. Dryden.

s (conducting wires) wound around the armature of an electric motor or generator. Winding engine, an engine employed in mining to draw up buckets from a deep pit; a hoisting engine. -- Winding sheet, a sheet in which a corpse is wound or wrapped. -- Winding tackle (Naut.), a tackle consisting of a fixed triple block,…