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To raise or lift by means of a pulley. [R.] Howell.

A pulley for driving machines, etc., having two or more parts or steps of different diameters; a pulley having a conical shape.

l barometer, a barometer with recurved tube, and a float, from which a cord passes over a pulley and moves an index.

A grooved pulley or sheave incased in a frame or shell which is provided with a hook, eye, or strap, by which it may be attached to an object. It is used to change the direction of motion, as in raising a heavy object that can not be conveniently reached, and also, when two or more such sheaves are compounded, to chang…

Ropes passing through pulleys, and used to haul in or up the leeches, bottoms, or corners of sails, preparatory to furling.

A peculiar tackle, formed of two or more blocks, or pulleys, the weight being suspended of a hook block in the bight of the running part.

plates or bands, on a vessel's side, to which the standing rigging is fastened. -- Chain pulley, a pulley with depressions in the periphery of its wheel, or projections from it, made to fit the links of a chain. -- Chain pumps. See in the Vocabulary. -- Chain rule (Arith.), a theorem for solving numerical problems b…

A chain pulley, or sprocket wheel.

Side by side; by the side. These pulleys . . . placed collaterally. Bp. Wilkins.

oceed from a radiant point to a given surface, as that of a lens, or conversely. -- Cone pulley. See in the Vocabulary. -- Oblique or Scalene cone, a cone of which the axis is inclined to the plane of its base. -- Eight cone. See Cone, 1.

upward; to make anything higher at the middle than at the edges, as the face of a machine pulley.

- Dead lift, a direct lift, without assistance from mechanical advantage, as from levers, pulleys, etc.; hence, an extreme emergency. "(As we say) at a dead lift." Robynson (More's Utopia). -- Dead line (Mil.), a line drawn within or around a military prison, to cross which involves for a prisoner the penalty of being…

overcoming great resistance or producing very slow or very rapid motion. -- Differential pulley. (Mach.) (a) A portable hoisting apparatus, the same in principle as the differential windlass. (b) A hoisting pulley to which power is applied through a differential gearing. -- Differential screw, a compound screw by whi…

A cylinder on a revolving shaft, generally for the purpose of driving several pulleys, by means of belts or straps passing around its periphery; also, the barrel of a hoisting machine, on which the rope or chain is wound.

strap with any part to be acted upon by the eccentric. -- Eccentric sheave, or Eccentric pulley, an eccentric. -- Eccentric strap, the ring, operating as a journal box, that encircles and receives motion from an eccentric; -- called also eccentric hoop.

n 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.

holes of various sizes; one which can be expanded in diameter while boring. -- Expanding pulley (Mach.), a pulley so made, as in sections, that its diameter can be increased or diminished.

The principal dressed surface of a plate, disk, or pulley; the principal flat surface of a part or object.

r; to say one thing and do another "Play fast and loose with faith." Shak. Fast and loose pulleys (Mach.), two pulleys placed side by side on a revolving shaft, which is driven from another shaft by a band, and arranged to disengage and reëngage the machinery driven thereby. When the machinery is to be stopped, the ban…

dge, the upper one projecting beyond the lower one, and capable of being moved forward by pulleys; -- used for carrying troops over narrow moats in attacking the outworks of a fort. (c) A kind of ferryboat which is guided and impelled by means of chains which are anchored on each side of a stream, and pass over wheels…