| 单词 | quarter rack |
| 释义 | > as lemmasquarter rack quarter rack n. now rare a rack (rack n.4 5b) which regulates the striking of the quarters in a clock. ΚΠ 1764 Gen. Mag. Arts & Sci. June 308/1 The particulars of this curious repeating watch are as follows... Hour hammer,..Rack, chain, and pully,..Quarter and half quarter rack. 1843 Penny Cycl. XXVII. 108/2 When the quarter-rack is brought back to its original position..the part m will have passed between the end R of the all-or-nothing. 1881 F. J. Britten Watch & Clockmakers' Handbk. (ed. 4) 80 The quarter rack has two sets of three ratchet teeth each. 1958 L. E. C. Hughes & C. F. Tweney Chambers's Techn. Dict. (ed. 3) 693 The snail in a chiming clock or repeater-watch which controls the number of teeth picked up on the quarter rack. < as lemmas |
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