block and tackle

(redirected from blocks and tackles)
Also found in: Thesaurus, Medical, Encyclopedia.
click for a larger image
block and tackle
Half the pull (p) is required to lift the weight (w) with a two-pulley block and tackle unit.

block and tackle

n.
An apparatus of pulley blocks and ropes or cables used for hauling and hoisting heavy objects.

block and tackle

n
(Mechanical Engineering) a hoisting device in which a rope or chain is passed around a pair of blocks containing one or more pulleys. The upper block is secured overhead and the lower block supports the load, the effort being applied to the free end of the rope or chain

block′ and tack′le


n.
the ropes or chains and blocks used in a hoisting tackle.
[1830–40]

block and tackle

(blŏk)
A device consisting of a fixed pulley and a movable one, in which the rope attached to the load is passed over the fixed pulley, around the movable pulley, then back around the fixed one. Each pulley can have multiple grooves or wheels for the rope to pass over additional times. The more times the rope is passed around the two pulleys, the less effort is needed to raise a load.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.block and tackle - pulley blocks with associated rope or cableblock and tackle - pulley blocks with associated rope or cable
hoist - lifting device for raising heavy or cumbersome objects
pulley, pulley block, pulley-block, block - a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
Translations
csigasor

block and tackle

n (Tech) → paranco
References in classic literature ?
And back it came, day after day, steering compasses, blocks and tackles, sails, coils of rope, medicine chests, ensigns, signal flags--everything, in fact, except the trade goods and supplies which had already been kai-kai'd.
Levers and purchases fascinated him, and his mind roved backward to hand-spikes and blocks and tackles at sea.
Blocks and tackle, placed at their extremities, afforded the means of elevating the balloon, by the aid of a transverse rope.