sprag


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Related to sprag: SPREG

sprag

[sprag]
(engineering)
A stake used as a brake for a vehicle by inserting it through the spokes of a wheel or digging it into the ground at an angle.
(mining engineering)
A prop supporting the roof or ore in a mine.
References in periodicals archive ?
There were a couple of incidents involving loose or defective drive belts and comments on sprag clutches.
Service Life high-speed backstops are of the sprag design.
In the sprag-type backstop, the sprags are in constant contact with the races resulting in wear and shortened life.
He registered his first patent in June, 1959, for a sprag retainer in a one-way clutch that ensured all sprags would simultaneously and equally roll to carry the load torque.
Sprags may have a problem with Rihanna's (http://www.
CFB units feature a centrifugal throw out design which enables the sprags to lift at speeds exceeding 665 RPM, eliminating wear and heat at high speeds.
Formsprag Clutch's high-speed backstop is designed with inner race centrifugal throw-out sprags to meet the requirements of inclined conveyors or bucket elevators that use a gear reducer with the backstop mounted externally on the high-speed or intermediate shaft.
An extract from a pamphlet called Don'ts for Miners and Mine Officials published in the Western Mail in 1899: Don't ill-treat the horse for every little mishap, especially when it arises from your carelessness; Don't throw stones or sprags at horses; Don't place your food box in the horse's nose bag; Don't assume a horse works better on an empty nose bag.
So, in the longer term, the wheeling of cheap power may have some sprags put to it.
Formsprag Clutch (South Beloit, IL) has introduced a new high speed backstop designed with inner race centrifugal throw-out sprags to meet the backstopping requirements of inclined conveyors or bucket elevators that use a gear reducer with the backstop mounted externally on the high speed or intermediate shaft.
The trackage is roughly laid and dumb buffered wagons of a crude type lie around the yard complete, with sprags of wood which were lobbed under the wheels to stop them from rolling.