sprag

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sprag

(sprăg)
n.
1.
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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

sprag

(spræɡ)
n
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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

sprag

(spræg)

n.
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.]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

sprag

- A block placed behind a car wheel to keep it from rolling down a hill.
See also related terms for rolling.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.

sprag

A projection preventing the movement of platforms or pallets in the side guidance rails in an aircraft cabin.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun 1. sprag - a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline
chock, wedge - a block of wood used to prevent the sliding or rolling of a heavy object
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
References in periodicals archive ?
(2) Sprags are circumferentially uniform and share the load evenly.
An Analytical Model of Multiarc Sprag Clutch considering Geometry and Internal Interaction during Engagement
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.
INNOVATIONS
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.
In darkness for years, the dangerous and harsh life of pit ponies; Book lifts the lid on conditions
Our Engineering experience continually expands our design features which include: no back lash, Sprag and Ramp/Roller Technology, Free-Action retainers, PCE sprag design, Formchrome sprags, Centrifugal Lift-Off designs and operational cost savings with rebuilding capability designed into clutches.
Web 2003 directory
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.
The mining community starts branching out; THE CHEQUERED HISTORY OF HAUNCHWOOD COLLIERY WHICH LAUNCHED ITS OWN HORSE-DRAWN RAILWAY IN THE EARLY 1800s
The two-speed transmission is generally composed of the outer ring gear, intermediate input shaft, inner star wheel, and a plurality of cylinder rollers or sprags. The one-way clutch is made up of the outer ring gear, sprags, and the inner star wheel.
Bifurcation and Chaos Analysis of the Spur Gear Transmission System for One-Way Clutch, Two-Shaft Assembly

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