| 单词 | temper-screw |
| 释义 | > as lemmastemper-screw temper-screw n. a set-screw for adjustment; esp. in boring, a screw-connection for automatically adjusting the drill as the boring proceeds. ΘΚΠ society > occupation and work > equipment > piercing or boring tools > [noun] > drill > other drill parts or attachments tache1683 temper-screw1865 sub1875 substitute1875 stem1880 1865 G. W. Gesner A. Gesner's Pract. Treat. Coal (ed. 2) ii. 28 The Temper Screw is attached to a rope which connects with the end of the walking-beam, and serves to regulate the descent of the drill, without the inconvenience of lengthening the rope at short intervals. 1877 E. H. Knight Pract. Dict. Mech. Temper-screw,..one which brings its point against a bearing or an object. 1883 Cent. Mag. July 330/1 Then there is the ‘temper-screw’ which lowers the drilling apparatus inch by inch as it goes down. < as lemmas |
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