GB650315A - Improvements in or relating to methods of and means for weaving fabrics - Google Patents

Abstract

650,315. Shuttleless; looms selvedge forming. HART & SON, Ltd., A. Sept. 19, 1947, No. 25588. [Classes 142(i), 142(ii), and 142(iv)] Weft inserter; forming selvedges. A weft inserter 48 is operated by a rack 40 and pinion 42 by rotation of a shaft 36 driven by gearing 34 from the main shaft 11. The selvedge yarn is contained in a carrier 86 which is caused to slide on rods 88. 89 by pinions 83, 84 driven by a rack 82. The rack 82 is operated by links 33 from levers 31 having rollers 30 engaged by a carri on the shaft 15. The shaft 15 is rotated by gear-. ing 13, 14 from the shaft 11. In operation, the weft inserter passes through the shed to lay a pick of weft and passes through a slot 87 in the selvedge-forming mechanism to form a loop of weft through which the selvedge yarn is passed by movement of the carrier 86 on the rods 88, 89 to form the selvedge shown in Fig. 1. The carrier 86 has a tensioning roller 95 with a serrated surface. Shedding. The healds are operated by arms 22, pivoted at 27, and connected by links 21 to bars 18 carrying rollers 17 in contact with cams 16 on the shaft 15. The right-hand end of the bar 18 is guided in an arcuate guide 20. Weft supplying and tensioning. The weft 52 is drawn from a stationary supply through an eye 54, round a tension roller 50, through a resilinet compensating device 56 and round a roller 51 to the weft inserter. A butterfly spring 50<1> presses the yarn against the roller 50. Take-up motion. An arm 66, operated by the forward movement of the slay, turns a ratchet wheel 67 which rotates a draw-off roller 71 through gearing 68, 69, 70. A roller 73 mounted on a pivoted arm 75 ensures sufficient frictional contact of the fabric with the roller. A cloth roll 74 is driven by a belt 74a and gearing 74b from the ratchet wheel 67. Smallware looms. A number of weaving units may be included side by side in one loom.