Search the Dictionary

Communicating force; impelling; as, a driving shaft. Driving axle, the axle of a driving wheel, as in a locomotive. -- Driving box (Locomotive), the journal box of a driving axle. See Illust. of Locomotive. -- Driving note (Mus.), a syncopated note; a tone begun on a weak part of a measure and held through the next a…

A humming or deep murmuring sound. The monotonous drone of the wheel. Longfellow.

A low, four-wheeled, open carriage, used in Russia, consisting of a kind of long, narrow bench, on which the passengers ride as on a saddle, with their feet reaching nearly to the ground. Other kinds of vehicles are now so called, esp. a kind of victoria drawn by one or two horses, and used as a public carriage in Germ…

One of the dowels joining the ends of the fellies which form the circle of the wheel of a gun carriage. Wilhelm.

ble; twofold. Duplex escapement, a peculiar kind of watch escapement, in which the scape-wheel has two sets of teeth. See Escapement. -- Duplex lathe, one for turning off, screwing, and surfacing, by means of two cutting tools, on opposite sides of the piece operated upon. -- Duplex pumping engine, a steam pump in wh…

t the helm more nearly amidships, to lessen the effect on the ship, or the strain on the wheel rope. Ham. Nav. Encyc.

ts, by which the motion of an eccentric is transmitted, as in the steam engine. (b) A cogwheel set to turn about an eccentric axis used to give variable rotation. -- Eccentric hook or gab, a hook-shaped journal box on the end of an eccentric rod, opposite the strap. -- Eccentric rod, the rod that connects as eccentri…

ng in a circular direction; a whirlpool. And smiling eddies dimpled on the main. Dryden. Wheel through the air, in circling eddies play. Addison.

ten language; hence, also, a simple portion of that which is complex, as a shaft, lever, wheel, or any simple part in a machine; one of the essential ingredients of any mixture; a constituent part; as, quartz, feldspar, and mica are the elements of granite. The simplicity which is so large an element in a noble nature…

ical orbit of a planet. The Sun flies forward to his brother Sun; The dark Earth follows wheeled in her ellipse. Tennyson.

e pigment, of a vivid light green color, made from the arseniate of copper; green bice; Scheele's green; -- also used adjectively; as, emerald green crystals. -- Emerald Isle, a name given to Ireland on account of the brightness of its verdure. -- Emerald spodumene, or Lithia emerald. (Min.) See Hiddenite. -- Emeral…

r on which the powder of emery is spread and glued for scouring and polishing. -- Emery wheel, a wheel containing emery, or having a surface of emery. In machine shops, it is sometimes called a buff wheel, and by the manufacturers of cutlery, a glazer.

To come into gear with; as, the teeth of one cogwheel engage those of another, or one part of a clutch engages the other part.

Pertaining to an engine. [Obs.] That one act gives, like an enginous wheel, Motion to all. Decker.

ach.), a train of mechanism in which epicyclic motion is involved; esp., a train of spur wheels, bevel wheels, or belt pulleys, in which an arm, carrying one or more of the wheels, sweeps around a center lying in an axis common to the other wheels.

Pertaining to the epicycloid, or having its properties. Epicycloidal wheel, a device for producing straight-line motion from circular motion, on the principle that a pin fastened in the periphery of a gear wheel will describe a straight line when the wheel rolls around inside a fixed internal gear of twice its diameter…

Having wheels of the same size or diameter; having equal rotation. [R.]

The fling of a horse, or ordinary kicking back of his heels; a gambol.

(Steam Engine), a relief valve; a safety valve. See under Relief, and Safety. -- Escape wheel (Horol.), the wheel of an escapement.

The contrivance in a timepiece which connects the train of wheel work with the pendulum or balance, giving to the latter the impulse by which it is kept in vibration; -- so called because it allows a tooth to escape from a pallet at each vibration.