screw jack


1710–20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
screw jack
jackscrew, Also called: jack a lifting device utilizing the mechanical advantage of a screw thread, the effort being applied through a bevel drive

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Example sentences
The video shows how it was done in this case: a scissors lift driven by a screw jack.
Each corner of the scaffold was mounted on an adjustable screw jack and caster.
Miscellaneous components such as screw jack extensions, clamps, and adjusting pins should be inspected as well.
The body then begins to turn about the end of the support, but is restrained from abrupt movement by action of the screw jack.
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