Gilroy, Clinton G · New York, G. D. Baldwin · leaf 481
vertical shaft20, 20, which has, at its upper end, a head-piece 22, 22, havingside grooved pieces 23; 23, in which the pins 24, 24, fast upon the 444 THE ART OF WEAVING. head of the double screw 25, 25, (Fig. 214) work, and thus turnthe double screw round. This double screw 25, 25, is cut half… … The fourth part of these improvements in the construction oflooms, consists, in an arrangement of mechanism, designed for thepurpose of throwing the loom out of gear with the driving power,either when the weft breaks or becomes expended in the shuttle, orwhen the taking up of the cloth is not equal…
Weaving
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