sprag(redirected from Sprag clutch)
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a. A piece of wood or metal wedged beneath a wheel or between spokes to keep a vehicle from rolling.
b. A pointed stake lowered at an angle into the ground from a vehicle to prevent movement.
2. A prop to support a mine roof.
[Perhaps of Scandinavian origin.]
1. (Automotive Engineering) a chock or steel bar used to prevent a vehicle from running backwards on an incline
2. (Mining & Quarrying) a support or post used in mining
3. (Mining & Quarrying) mining NZ a steel bar inserted into the wheels of a box to act as a brake
[C19: of uncertain origin]
a pole hinged to a rear axle, as of a cart, in such a way that it can act as a brace against rolling downhill.
[1835–45; of uncertain orig.]
sprag- A block placed behind a car wheel to keep it from rolling down a hill.
See also related terms for rolling.
A projection preventing the movement of platforms or pallets in the side guidance rails in an aircraft cabin.
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|Noun||1.||sprag - a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline|
|2.||sprag - a wooden prop used to support the roof of a mine|
prop - a support placed beneath or against something to keep it from shaking or falling