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- Dictionarypulley/ˈpʊli/
noun
- 1. a wheel with a grooved rim around which a cord passes, which acts to change the direction of a force applied to the cord and is used to raise heavy weights.
verb
- 1. hoist with a pulley: "the tree house was built on the ground and pulleyed into the branches"
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A pulley is a wheel on an axle or shaft enabling a taut cable or belt passing over the wheel to move and change direction, or transfer power between itself and a shaft. A sheave or pulley wheel is a pulley using an axle supported by a frame or shell (block) to guide a cable or exert force.
pulley: [noun] a sheave or small wheel with a grooved rim and with or without the block in which it runs used singly with a rope or chain to change the direction and point of application of a pulling force and in various combinations to increase the applied force especially for lifting weights.
Pulleys can be made from a variety of materials, including cast iron, cast steel or pressed steel, wood, and paper. The cast material should have good friction and wear characteristics. The pulley made from pressed steel is lighter than cast pulleys, but in many cases, they have less friction and can produce excessive wear.
PULLEY definition: 1. a piece of equipment for moving heavy objects up or down, consisting of a small wheel over which…. Learn more.
Jan 18, 2022 · Compound Pulley. It combines fixed and moveable pulleys. The advantage of this system of pulleys is that the effort required to move a load is less than half the load. The more the number of pulleys, the less is the effort. The mechanical advantage is always greater than 2. However, the disadvantage of using a compound system is that the length ...
Pulley definition: a wheel, with a grooved rim for carrying a line, that turns in a frame or block and serves to change the direction of or to transmit force, as when one end of the line is pulled to raise a weight at the other end. See examples of PULLEY used in a sentence.
PULLEY meaning: 1. a piece of equipment for moving heavy objects up or down, consisting of a small wheel over which…. Learn more.
a wheel or set of wheels over which a rope or chain is pulled in order to lift or lower heavy objects. a system of ropes and pulleys; The scenery was moved across the stage by ropes and pulleys.
3 meanings: 1. a wheel with a grooved rim in which a rope, chain, or belt can run in order to change the direction or point of.... Click for more definitions.
Define pulley. pulley synonyms, pulley pronunciation, pulley translation, English dictionary definition of pulley. n. pl. pul·leys 1. A simple machine consisting essentially of a wheel with a grooved rim in which a pulled rope or chain can run to change the direction of...
