| 单词 | belt-shifter |
| 释义 | > as lemmasbelt-shifter belt-shifter n. a device for shifting a machine belt between pulleys. ΚΠ 1841 U.S. Patent 2,328 1/2 F, Fig. 2, are similar pulleys inverse to the former connected by the belt c, to which..a belt shifteris affixed, and an index marked so as to show the increase or diminution of speed. 1920 National Safety News 26 July 12/2 While observing a mechanical belt shifter at Flint I noticed that it seemed to be very satisfactory in shifting from high to low. 2002 L. E. Gray From Ascending Rooms to Express Elevators i. 4 Pulling on the rope rotated the upper pulley and turned a crank that moved the belt shifter. 2012 Canad. Patent 2,762,953 2 It is..generally known to equip such upright vacuum cleaners with a belt shifter mechanism in order to allow one to selectively interrupt drive to the rotary agitator when desired. < as lemmas |
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