Patent GB-479759-A (GB)
Title: Improvements in the preparation of warp for weaving and apparatus therefor
IPC: D03J1/14
Filed: 1936-08-10
Abstract: 479,759. Preparing warps for weaving. LINEN INDUSTRY RESEARCH ASSOCIATION, MATTHEW, J. A., BOFFEY, H., KEIG, R. J. B., and McILVEEN, J. C. Aug. 10, 1936, No. 21941. [Classes 120 (ii), 142 (ii), and 142 (iv)] A warp is prepared for weaving by drawing a single end of yarn Y through the eyes of a stack of metal heddles h in a magazine B and winding it spirally in hank form on a reel A, transferring the heddles in succession from the magazine and securing them to the reel during the winding operation and simultaneously placing the yarn in the correct splits of a reed M on the reel according to the sett of warp desired. On completion of the winding, lease rods L<4> and laths h<3> are inserted in the warps and groups of heddles respectively as shown in Fig. Ia. The warp ends are secured to the reed and the warp removed from the reel as a continuous band, which may be woven up as such or cut between clamping bars C<7> for attachment to beams in the ordinary way. Magazine construction. The magazine comprises a frame C hinged to a carriage D, that is traversed by a screw d<2>, and having side strips F and a central wire f<1> on which the heddles are threaded, the lowermost heddle being removed from the magazine when desired by manual rotation, through 90‹ of a shaft J<1> and two notched or grooved wheels 1<1>. Reel construction. The released heddle is then moved forward manually on the yarn Y to a reel A comprising horizontal or vertical bars b<1> .. b<12> mounted on the ends of pairs of spokes a<1> ... a<12> radiating from a shaft K<1>, all but one pair of the spokes being freely mounted on the shaft to allow the reel to be collapsed. The bars and spokes are held in extended form by tapes L<1> and hook and ring fastenings. The reed M is mounted adjacent the bar b<1> and the splits thereof receive one or more ends of the yarn y, one during the winding operation, according to the movement of a reed opening finger R which is traversed across the reed by a carriage Q and a screw shaft q<2> that is rotated intermittently under control of pattern mechanism. Each set of spokes b<2> &c. is also provided with rods e<2> &c. to which the heddles withdrawn from the magazine are secured with the eyes thereof in line with the bars b<2> &c., the heddles being allocated to the bars in groups according to the draft of the weave desired. Pattern mechanism controlling the movements of the reel and reed opening finger. The bars b<2> ... to which the released heddles are to be allotted are selected by pattern mechanism comprising a pattern cylinder N<1> that is slotted spirally at ai2, n<3> &c., according to the number and spacing of the bars b<2> &c., and co-operates with pegged levers O<2> in turn controlled by peg levers o<2> and a lattice chain L<2>. When a peg on the chain L<2> raises a lever o<2>, the pegged lever 0<2> is moved into position to engage a slot n<2> &c., and thereby arrest the movement of the cylinder N<1>, its supporting shaft K<1> and the one A with the appropriate bar positioned for attachment of the heddle. The pattern cylinder N<1> is mounted on an extension of the shaft K<1> which also carries chain and sprocket mechanism P<1>, p<1> for driving the screw shaft d<2> and an arm g<3> which co-operates with spokes g<4> on a shaft k<4> to advance the pattern chain L<2>. The reed opening finger R is moved from one split to another, after insertion of the desired number of ends, by the action of a pawl on a ratchet T on the screw shaft q<2>, the pawl carrier, a chain pinion P<3> and a cam U<1>, forming a unit that is movable angularly on the shaft q<2> by a chain p<3>. The chain is resiliently anchored at one end to a bracket V and adjustably connected at the other to a lever g<7> having a bowl or runner u<2> for engagement with a relatively stationary cam U<2> that is carried by slidably mounted rods K<6> and is movable into and out of the path of the roller u<2> by the action of the pattern chain L<2> on a lever o<1>. The finger R is removed from the reed during the rotation of the shaft q<2> by the cam U<1> forcing a pin out of a notch 2 therein and operating a cranked rod q<3>. The reel may be arranged on a vertical axis and may be so dimensioned as to accommodate a number of warps which may be wound simultaneously. The yarn may be sized or dressed before, during, or after reeling.