A part of a mechanism consisting of a cylinder, rod, or pin with a helical ridge or groove and which… Such a device used for raising weights or…

(See quot. 1876.)

a contrivance for digging up roots, perhaps a sort of screw jack.

A mechanical device used for lifting heavy objects with force from below, typically operated by means of a rack and a pinion, screw, or hydraulic…

a jack operated by means of a screw (sense 1a).

A jack (Jack, n.2, in various senses) that operates by means of or is equipped with a spring or springs.

A lifting jack consisting of a threaded column that extends out of a supporting base when turned.

A device for lifting heavy weights from below, a jack (Jack, n.2 11).

(see quot.).

(Jack, n.2 11), see quot. 1875.

(see quot.).

(see quots.).

see quot. 1877.

An instrument or tool used in setting, in various senses. A kind of lifting-jack.