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摘要

989,300. Weaving shaped fabrics; beat-up motions; take-up motions. E. KOPPELMAN, and VON BIBRA, [trading as 3-D WEAVING CO. ]. Jan. 25, 1962 [Feb. 23, 1961], No. 2872/62. Headings D1E and D1K. A fabric consisting of spaced apart woven upper and lower plies interconnected by woven rib plies is woven in collapsed condition, Fig. 1 shows a fabric made with three sets of warp threads 11, 12; 21, 22; 31, 32. Sets 11,12 and 31, 32 are combined into an upper sheet which is woven into one ply simultaneously with the weaving of set 21, 22 into the other ply; the upper sheet is then separated into the sets 11,12; 31, 32 and weaving of three separate plies takes place; weaving of the upper and lower plies then ceases and weaving of the centre ply continues to produce the extra length x necessary for the rib; set 31, 32 is then combined with set 21, 22 which is woven into one ply simultaneously with the weaving of the upper set 11,12 into the other ply; sets 31, 22; 21, 22 are then separated and the weaving of three separate plies continues to form the second rib similarly to the first rib. The fabric may be woven by modifying either the beat-up or take-up motions: Beat-up motion (Fig. 7). The fabric is taken up in the normal way by roll 63 and is beaten up by a two piece (84, 85) reed to beat-up line 58. When it is desired to discontinue weaving one or more plies, the take up roll 63 is stopped so that (say); plies 10, 20 remain at the beat up line 58. A cam 87 is then gradually rotated to draw the reed parts 84, 85 together to modify the beat up line progressively to 581 whilst (say) ply 30 is woven. When sufficient of the rib ply 30 is woven the cam 87 then separates the parts 84, 85 and take-up recommences with beat up line at 58 where weaving of the plies 10, 20 was stopped. Take-up motion (Fig. 3). Take-up is by way of rollers 60, 61, pivoted at 61, and driven roll 63. When all plies are being woven roll 63 take up cloth from beat-up line 58. When it is desired to discontinue weaving (say) plies 10, 20 the take-up roll 63 is stopped and a cam 65 is gradually rotated to pivot the rolls 60, 61 about 61 to take'up the ply (say 30) being woven. When sufficient of the rib ply 30 is woven cam 65 returns all plies to the beat-up line 58 and take up recommences with roll 63. Specifications 894,651 and 894,652 are referred to.