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Moving in opposite directions; -- said of a lever, pulley, etc., in which the resistance and the actuating force are on opposite sides of the fulcrum or axis.

Moving in the same direction; -- said of a lever or pulley in which the resistance and the actuating force are both on the same side of the fulcrum or axis.

In an ingenious manner; with ingenuity; skillfully; wittily; cleverly. "Too ingeniously politic." Sir W. Temple.

Curiousness, or cleverness in design or contrivance; as, the ingenuity of a plan, or of mechanism. He gives . . . To artist ingenuity and skill. Cowper.

en they strike an obstacle side ways, but easily controlled by the hand wheel or steering lever.

at pressure, or lifting or moving a heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, whi…

loat; as, to launch a ship. With stays and cordage last he rigged the ship, And rolled on levers, launched her in the deep. Pope.

. -- Line of centers. (Mach.) (a) A line joining two centers, or fulcra, as of wheels or levers. (b) A line which determines a dead center. See Dead center, under Dead. -- Line of dip (Geol.), a line in the plane of a stratum, or part of a stratum, perpendicular to its intersection with a horizontal plane; the line o…

s of which force and motion may be transmitted and modified, as a screw and its nut, or a lever arranged to turn about a fulcrum or a pulley about its pivot, etc.; especially, a construction, more or less complex, consisting of a combination of moving parts, or simple mechanical elements, as wheels, levers, cams, etc.,…

the main yard. -- Main center (Steam Engine), a shaft upon which a working beam or side lever swings. -- Main chance. See under Chance. -- Main couple (Arch.), the principal truss in a roof. -- Main deck (Naut.), the deck next below the spar deck; the principal deck. -- Main keel (Naut.), the principal or true ke…

ion of physical phenomena. -- Mechanical powers, certain simple instruments, such as the lever and its modifications (the wheel and axle and the pulley), the inclined plane with its modifications (the screw and the wedge), which convert a small force acting throught a great space into a great force acting through a sm…

of rotation and moment of the mass. -- Statical moment, the product of a force into its leverage; the same as moment of a force with respect to a point, line, etc. -- Virtual moment. See under Virtual.

A short, round iron bar or lever used in naval gunnery. Totten.

The remotest known planet of our system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. Its mean distance from the sun is about 2,775,000,000 miles, and its period of revolution is about 164,78 years. Neptune powder, an explosive containing nitroglycerin…

One of the pieces or levers connected with the pendulum of a clock, or the balance of a watch, which receive the immediate impulse of the scape-wheel, or balance wheel. Brande & C.

A young leveret.

A cant hook having the end of its lever armed with a spike.

A lever or key acted on by the foot, as in the pianoforte to raise the dampers, or in the organ to open and close certain pipes; a treadle, as in a lathe or a bicycle.

e leg; as, to knock one off his pins. [Slang] Banking pin (Horol.), a pin against which a lever strikes, to limit its motion. -- Pin drill (Mech.), a drill with a central pin or projection to enter a hole, for enlarging the hole, or for sinking a recess for the head of a bolt, etc.; a counterbore. -- Pin grass. (Bot.…

A lever having a projection at one end, acting as a fulcrum, -- used chiefly to roll heavy wheels, etc. Called also pinch bar. At a pinch, On a pinch, in an emergency; as, he could on a pinch read a little Latin.