PULLEY • FREE TRANSLATOR.ORG • Definition of Pulley

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/pˈʊli/ Listen

noun

Pulley n. (pl. pulleys) (Mach.) 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 (Arch.), the upright of the window frame into which a pulley is fixed and along which the sash slides.

Split pulley, a parting pulley.

verb

Pulley v. t. To raise or lift by means of a pulley. (R.)

See images of 'Pulley'

Etymology of 'Pulley'

Collaborative International Dictionary of English 0.48

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"Pulley" Quotes from Famous Books

... noting an overhead arrangement of greased rail, wheel, and pulley, I ran into the arms of four eviscerated carcasses, all pure white and of a human aspect, pushed by a man clad in vehement red. When I leaped aside, the floor was slippery under me. Also there was a flavor of farm-yard in my nostrils and the shouting ...

— American Notes • Rudyard Kipling

... resting on the man's shoulders; thirty-first, La Cloche represented a man reclining on the ground, resting on his hands and feet—his belly uppermost, while the woman is seated in a basket without a bottom, so that her con comes through the open space, to which was affixed a pulley, so that every time the rope was pulled it brought the woman's notch in contact with the man's penis, and the amorous combat is finished by continual pulling on the rope; thirty-second, Branler la Pique represented a man with his finger in ...

— The Life and Amours of the Beautiful, Gay and Dashing Kate Percival - The Belle of the Delaware • Kate Percival

... individual had kept his word, for it was no simple derrick that he had erected above the open trench to let the heavy block of granite down into its place. It was not the simple tripod that Nor Juan had wanted for suspending a pulley from its top, but was much more, being at once a machine and an ornament, a grand and imposing ornament. Over eight meters in height rose the confused and complicated scaffolding. Four thick posts sunk in the ground served as a frame, fastened to each other by huge timbers crossing ...

— The Social Cancer - A Complete English Version of Noli Me Tangere • Jose Rizal

... meantime Apollonius had begun the decorating of the tower-roof of St. George's. He had built a scaffold, fastened his ladder to the broach-post, put a hempen ring on it, attached his tackle to the ring and hung his swinging-seat on the pulley. The tin ornamentation, which consisted of single long pieces, was intended to represent two ...

— The German Classics of The Nineteenth and Twentieth Centuries, Vol. IX - Friedrich Hebbel and Otto Ludwig • Various

... he pointed to a tall derrick temporarily rigged up at the stern of the vessel for the purpose of working the sounding apparatus, and surrounded by a group of busy men. Through a block pulley strongly lashed to the derrick, a stout cord of the best Italian hemp, wound off a large reel placed amidships, was now running rapidly and with a slight ...

— All Around the Moon • Jules Verne

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