Patent GB-111863-A (GB)
Title: Improvements in the Manufacture of Twist Lace Net and in Machines therefor.
Inventor: GEISENDORFER FRANCIS
IPC: D04C5/04
Filed: 1917-03-16
Abstract: 111,863. Geisdendorfer, F. March 16, 1917. Lace; lace machines and apparatus.-A traverse net with square ground is formed of diagonal pillars A, B, Fig. ti, each composed of a pair of threads, i.e. a bobbin thread c, d and warp thread e, f twisted together, and is produced by employing a traversing warp in conjunction with two tiers of traversing carriages. The net may be formed with spots c, Fig. 4, by employing beam threads g, h in place of certain of the warp threads, such beam threads being moved to the right or left between the vertical rows of spots. The machine for producing the net comprises improved mechanism of the kind described in Specification 14752/15, Points 5, 6, Fig. 2, are provided on the front and back combs 1, 2 for the purpose of holding the warp threads e, f, which are controlled by the shogging point-bars 7, 8. Guide-bars 3, 4 control the beam threads g, h, and may be actuated by a jacquard or cams. The carriers 9, Fig. 1, of the traversing warp spools 10 are driven by worms or screws 12, 13 which engage depending studs 14. As the traversing warp threads reach the ends of the machine, they are transferred from front to back cr back to front along a semicircular slot formed between guide-plates by means of an oscillating arm 83 mounted upon a shaft 84 furnished with a pinion 75 engaging a cam-operated rack 76. The front comb-bar 15 is shogged by means of a lever 16, Figs. 7 and 8, engaging a bracket 18 on the comb-bar and mounted upon a shaft 17 also carrying a lever 22 which shogs one of the take-up pointbars 98, Fig. 1, through a sliding shaft 24, Fig. 7, carrying an abutment 85. The levers 16, 22 are operated by cams 19, 20, 23 on a shaft 21. During spot-forming, the shaft 24 is traversed by a screw 70 operated by a pinion 71 engaging a cam-operated rack 72. The lower point-bars 91, 92, Fig. 1, are shogged by a lever 35, Fig. 7, mounted upon a sliding shaft 37 carrying a lever 38 adapted to engage a cam 39 on a shaft 27. Cams 25, 26 on the shaft 27 engaging a lever 28 control the point-bar knocking-out motion. The cam 25 is movable along the shaft 27, leaving the cam 26 only in action to cause the points to enter further into the work during spotforming. The screws 12, 13 are connected by gearing 40 and are driven through a worm-wheel 41 on the screw 12 by a worm 43 on a shaft 42 driven from the main shaft 44. A control shaft 51, Fig. 8, driven from the shaft 44 through spur and bevel gearing, shaft 21. and worm 52, makes one revolution per repeat of the spotted net. A lever 59, operated by a cam 50 on the shaft 51, controls the shaft 17 to bring the levers 16, 22 into or out of range of their cams, and is connected by a link 60 and lever 61 to a shaft 62, which carries a lever 63, Fig. 7, adapted to move the worm 42 into or out of engagement with the worm-wheel 41 and also the shaft 37 to bring the lever 38 into or out of range of the cam 39. The cam 25 is controlled bv a lever 66 connected by a link 65 and lever to the shaft 62. Similar mechanism is arranged at the opposite end of the machine.