OXFORD 9000
📚 noun • entry_id 17370

pulley

/ˈpʊli/
Meanings (ES + gloss)
carrillo • carrucha • garrucha • monospastos • motón • polea • roldana • trocla
One of the simple machines; a sheave, a wheel with a grooved rim, in which a pulled rope or chain lifts an object (more useful when two or more pulleys are used together, as in a block and tackle arrangement, such that a small force moving through a greater distance can exert a larger force through a smaller distance).
The steel haulage ropes have a breaking strain of 50 tons, and another pair passing around a pulley at the bottom connect the lower ends of the cars and act as tail or balance rope…
These pulleys […] placed collaterally.
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