Apparatus for feeding filling threads to a warp knitting machine

Claim 2

In a high speed warp knitting machine with inserted filling yarns at a knitting line, the machine being provided with yarn carrier chains and pins which are opened to receive yarn, then closed, and the yarns cut, the chains carrying each yarn to the knitting line of the machine and there being caused to open to deposit the filling yarn inserted against the warp threads, multiple stationary yarn packages mounted in a line substantially parallel to the insert yarn chains, the improvement which compriseS, a. a frame having guide openings for each of the multiple yarns from the multiple yarn packages, b. means for slowly reciprocating the frame from beyond one insert yarn carrier to the other at a position above the plane of the chains and pins, c. means for transferring the yarns to parallel pins on the insert yarn carrier chains without stopping the chains, d. means for cutting off the yarns after transfer to the pins on the chains, and e. means for holding the cut yarn after the first movement of the frame to the carrier chain opposite the yarn packages, whereby on the return movement of the reciprocation another set of yarns are strung from carrier chain to carrier chain and two sets of yarn are strung across and attached to the pins on the chains for each reciprocation of the frame.

Claim 3

A knitting machine according to claim 1 in which the frame moves only horizontally from chain to chain and the means for transferring the yarns to the insert yarn carrier chains comprises means for moving the frame a short distance toward the carrier chains at the moment of transfer.

Claim 4

A device according to claim 2 in which the reciprocating means for moving the frame carry a holding bar, which does not reciprocate longitudinally, provided with cam actuated fastening means adjacent at least one carrier chain, the bar moving toward the plane of the chains when the frame does but having transfer means to transfer the multiple yarns from the frame to the holding bar in its position away from the carrier chain, whereby a series of parallel yarns are held and are transferred to the carrier chains at one time, the multiple yarns held by the holding bar being drawn out on the return travel of the reciprocating frame to produce a second set of multiple yarns for attachment to the insert yarn carrier chains when they have moved a distance corresponding to the number of yarns in the set.

Claim 5

A device according to claim 3 in which the transfer means include power actuated cams opening and closing pins on the insert carrier at the same time and in synchronism with the transfer of the yarns.

Claim 6

In a high speed warp knitting machine with inserted filling yarns at a knitting line, the machine being provided with yarn carrier chains and pins thereon which are opened to receive yarns, then closed, and the yarns cut, each yarn being carried by the chains to the knitting line of the machine and the pins being caused to open to deposit the filling yarn inserted against the warp thread, the improvement which comprises, a. multiple yarn packages mounted on a stationary support, b. an inner and an outer frame, the inner frame movable vertically in the outer frame and carrying yarn guides, one for each yarn package, c. means for imparting vertical motion to the inner frame and horizontal motion to the outer frame to cause the inner frame to describe a figure eight path extending from one insert yarn carrier chain to beyond the other and back, one position in the horizontal motion of the outer frame bringing the two frames adjacent the yarn packages, d. means for transferring the multiple yarns through the inner frame to pins on one insert carrier chain as the frame passes beyond it, means for transferring the same yarn to the pins on the other carrier chain as the frame passes beyond it, and e. cutting means for cutting the yarn at both transfer points, the motion of the frame and the carrier chains being synchronized so that the multiple yarns are laid parallel to each other across chains.

Claim 7

In a high speed warp knitting machine with inserted filling yarns at a knitting line, the machine being provided with yarn carrier chains and pins thereon which are opened to receive yarns, then closed, and the yarns cut, each yarn being carried by the chains to the knitting line of the machine and the pins being caused to open to deposit the filling yarn inserted against the warp thread, the improvement which comprises, a. multiple yarn packages mounted on a stationary support, b. an inner and an outer frame, the inner frame movable vertically in the outer frame and carrying yarn guides, one for each yarn package, c. means for imparting vertical motion to the inner frame and horizontal motion to the outer frame to cause the inner frame to describe a figure eight path extending from one insert yarn carrier chain to beyond the other and back, one position in the horizontal motion of the outer frame bringing the two frames adjacent the yarn packages, d. means for transferring the multiple yarns through the inner frame to pins on one insert carrier chain as the frame passes beyond it, means for transferring the same yarn to the pins on the other carrier chain as the frame passes beyond it, and e. cutting means for cutting the yarn at both transfer points, the motion of the frame and the carrier chains being synchronized so that the multiple yarns are laid parallel to each other across chains.