Word Meanings - PULLEY - Book Publishers vocabulary database

A wheel with a broad rim, or grooved rim, for transmitting power from, or imparting power to, the different parts of machinery, or for changing the direction of motion, by means of a belt, cord, rope, or chain. Note: The pulley, as one

Additional info about word: PULLEY

A wheel with a broad rim, or grooved rim, for transmitting power from, or imparting power to, the different parts of machinery, or for changing the direction of motion, by means of a belt, cord, rope, or chain. Note: The pulley, as one of the mechanical powers, consists, in its simplest form, of a grooved wheel, called a sheave, turning within a movable frame or block, by means of a cord or rope attached at one end to a fixed point. The force, acting on the free end of the rope, is thus doubled, but can move the load through only half the space traversed by itself. The rope may also pass over a sheave in another block that is fixed. The end of the rope may be fastened to the movable block, instead of a fixed point, with an additional gain of power, and using either one or two sheaves in the fixed block. Other sheaves may be added, and the power multiplied accordingly. Such an apparatus is called by workmen a block and tackle, or a fall and tackle. See Block. A single fixed pulley gives no increase of power, but serves simply for changing the direction of motion. Band pulley, or Belt pulley, a pulley with a broad face for transmitting power between revolving shafts by means of a belt, or for guiding a belt. -- Cone pulley. See Cone pulley. -- Conical pulley, one of a pair of belt pulleys, each in the shape of a truncated cone, for varying velocities. -- Fast pulley, a pulley firmly attached upon a shaft. -- Loose pulley, a pulley loose on a shaft, to interrupt the transmission of motion in machinery. See Fast and loose pulleys, under Fast. Parting pulley, a belt pulley made in semicircular halves, which can be bolted together, to facilitate application to, or removal from, a shaft. -- Pulley block. Same as Block, n. 6. -- Pulley stile , the upright of the window frame into which a pulley is fixed and along which the sash slides. Split pulley, a parting pulley. (more info) origin ; but cf. OE. poleine, polive, pulley, LL. polanus, and F. poulain, properly, a colt, fr. L. pullus young animal, foal . For the change of sense, cf. F.

Related words: (words related to PULLEY)

• DIFFERENTIALLY
  In the way of differentiation.
• BROADSWORD
  A sword with a broad blade and a cutting edge; a claymore. I heard the broadsword's deadly clang. Sir W. Scott.
• TRANSMITTER
  One who, or that which, transmits; specifically, that portion of a telegraphic or telephonic instrument by means of which a message is sent; -- opposed to receiver.
• BROADBILL
  A wild duck , which appears in large numbers on the eastern coast of the United States, in autumn; - - called also bluebill, blackhead, raft duck, and scaup duck. See Scaup duck.
• CHANGEFUL
  Full of change; mutable; inconstant; fickle; uncertain. Pope. His course had been changeful. Motley. -- Change"ful*ly, adv. -- Change"ful*ness, n.
• POWERFUL
  Large; capacious; -- said of veins of ore. Syn. -- Mighty; strong; potent; forcible; efficacious; energetic; intense. -- Pow"er*ful*ly, adv. -- Pow"er*ful*ness, n. (more info) 1. Full of power; capable of producing great effects of any
• MOTIONER
  One who makes a motion; a mover. Udall.
• MOTIONIST
  A mover.
• POWERABLE
  1. Capable of being effected or accomplished by the application of power; possible. J. Young. 2. Capable of exerting power; powerful. Camden.
• BROADLY
  In a broad manner.
• CHAINWORK
  Work looped or linked after the manner of a chain; chain stitch work.
• DIFFERENTLY
  In a different manner; variously.
• BROADCLOTH
  A fine smooth-faced woolen cloth for men's garments, usually of double width ; -- so called in distinction from woolens three quarters of a yard wide.
• CHAIN PUMP
  A pump consisting of an endless chain, running over a drum or wheel by which it is moved, and dipping below the water to be raised. The chain has at intervals disks or lifts which fit the tube through which the ascending part passes and carry the
• BROAD-BRIMMED
  Having a broad brim. A broad-brimmed flat silver plate. Tatler.
• BROADCAST
  1. Cast or dispersed in all directions, as seed from the hand in sowing; widely diffused. 2. Scattering in all directions ; -- opposed to planting in hills, or rows.
• IMPARTIAL
  Not partial; not favoring one more than another; treating all alike; unprejudiced; unbiased; disinterested; equitable; fair; just. Shak. Jove is impartial, and to both the same. Dryden. A comprehensive and impartial view. Macaulay.
• DIFFERENT
  1. Distinct; separate; not the same; other. "Five different churches." Addison. 2. Of various or contrary nature, form, or quality; partially or totally unlike; dissimilar; as, different kinds of food or drink; different states of health; different
• WHEELBIRD
  The European goatsucker.
• CHANGEABLY
  In a changeable manner.
• TOP-CHAIN
  A chain for slinging the lower yards, in time of action, to prevent their falling, if the ropes by which they are hung are shot away.
• SHEET CHAIN
  A chain sheet cable.
• CATHERINE WHEEL
  See WINDOW (more info) Alexandria, who is represented with a wheel, in allusion to her
• CONE PULLEY
  A pulley for driving machines, etc., having two or more parts or steps of different diameters; a pulley having a conical shape.
• EXCITO-MOTION
  Motion excited by reflex nerves. See Excito-motory.
• FOUR-WHEELER
  A vehicle having four wheels.
• HOGCHAIN
  A chain or tie rod, in a boat or barge, to prevent the vessel from hogging.
• CANDLE POWER
  Illuminating power, as of a lamp, or gas flame, reckoned in terms of the light of a standard candle.
• REEXCHANGE
  To exchange anew; to reverse .
• NERVIMOTION
  The movement caused in the sensory organs by external agents and transmitted to the muscles by the nerves. Dunglison.
• PELTON WHEEL
  A form of impulse turbine or water wheel, consisting of a row of double cup-shaped buckets arranged round the rim of a wheel and actuated by one or more jets of water playing into the cups at high velocity.
• SELF-IMPARTING
  Imparting by one's own, or by its own, powers and will. Norris.