screw jack

noun

1. jackscrew.

screw jack

noun

1. a lifting device utilizing the mechanical advantage of a screw thread, the effort being applied through a bevel drive Also calledjackscrewjack

Word History and Origins

Origin of screw jack¹

First recorded in 1710–20

Example Sentences

In the case of the screw-jack, it may be used to raise a heavy weight.

From Project Gutenberg

The screw-jack was powerless to destroy the work of Chaucers time.

From Project Gutenberg

To this purpose a screw jack is to be applied aft, and strong purchases on the ice ahead.

From Project Gutenberg

One end of the log was then lifted by a screw-jack until level with the saw-bench.

From Project Gutenberg