英语词汇“builder's jack”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

builder's jack n. (a) a mechanical or hydraulic jack used (singly, or in multiple) to raise or support a heavy building element or an entire building; †(b) U.S. a temporary platform, bracket, or small scaffolding attached to a window opening and projecting outwards, used to enable work to be carried out on the outside of the window; a window-jack (obsolete).

ΚΠ

1835 ‘F. Lever’ Young Mechanic ii. Pl. II Builder's Jack.

1874 E. H. Knight Amer. Mech. Dict. I. 400/2 Builder's jack, a kind of scaffold which is supported on a window-sill and against the wall, and extends outwardly, to enable a workman to stand outside while repairing or painting.

1910 U.S. Patent 945,162 1/1 It is one of the objects of my invention to enable the key and brace of a builder's jack or window jack to be folded up and fastened to the key board when out of use.

1962 Pop. Sci. Jan. 164/2 Use a jack post or builder's jack to raise the girder to proper level.

2020 N. Louth Body on Island (e-book ed.) Dust lay thickly around the edge of the room, with just a well-trodden footpath past a builder's jack right in the middle, bracing a metal joist against a cracked ceiling.

单词	builder's jack
释义	> as lemmas builder's jack builder's jack n. (a) a mechanical or hydraulic jack used (singly, or in multiple) to raise or support a heavy building element or an entire building; †(b) U.S. a temporary platform, bracket, or small scaffolding attached to a window opening and projecting outwards, used to enable work to be carried out on the outside of the window; a window-jack (obsolete). ΚΠ 1835 ‘F. Lever’ Young Mechanic ii. Pl. II Builder's Jack. 1874 E. H. Knight Amer. Mech. Dict. I. 400/2 Builder's jack, a kind of scaffold which is supported on a window-sill and against the wall, and extends outwardly, to enable a workman to stand outside while repairing or painting. 1910 U.S. Patent 945,162 1/1 It is one of the objects of my invention to enable the key and brace of a builder's jack or window jack to be folded up and fastened to the key board when out of use. 1962 Pop. Sci. Jan. 164/2 Use a jack post or builder's jack to raise the girder to proper level. 2020 N. Louth Body on Island (e-book ed.) Dust lay thickly around the edge of the room, with just a well-trodden footpath past a builder's jack right in the middle, bracing a metal joist against a cracked ceiling. extracted from buildern. < as lemmas
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