Abstract: Device for the offset displacement between two end positions, at which its offset movement is reversed, of a warp knitting machine guide bar shifted horizontally by a guide bar shaft and holding the yarn guides. A buffer is provided for at least one of the end positions, said buffer acting as an elastic stop with a short buffering path with respect to the needle division before the yarn guides can run up against the knitting needles.

Abstract: Process for the production of a warp knit fabric with a basic material including a tricot stitch ground and a chain stitch ground as well as a pile laid over pile sinkers, forming pile loops which are knitted into the material. The pile sinkers are offset relative to their pile sinker bar by one needle division per stitch row so that the tricot ground can be formed. The chain stitch ground yarns form a loop only every other stitch row so that the looping is let out in the formation of the chain stitch ground once the yarn which forms the chain stitch ground has been displaced laterally by the pile sinker bar.

Abstract: This invention relates to a warp knitting machine in which the knitting elements and each of the warp beams are driven by separate electric motors, powered from a common electrical network. An electric clutch is included in the drive connection between each warp beam and its electric motor and said clutch is energized by the same electric network which powers the electric motors. The electric clutch is energized when electric current is supplied to it by the network and connects the warp beams with their own electric motors. Whenever the electric current in the network is interrupted, the electric clutch is disengaged.

Abstract: This invention relates to a stitch-bonding warp knitting machine and a process for operating it. The stitch-bonding warp knitting machine comprises a plurality of knitting needles that pierce a continuously conveyed band of material. The knitting needles are driven by two different reciprocating motions, one of which reciprocates the needles along their longitudinal axis and the other of which swivels said knitting needles about an axis. The invention also includes means for continuously conveying a band of material through a point in the path of said reciprocating knitting needles. The reciprocating action of the needles and the swivelling action about an axis remote from the point that said band of material passes is such that said knitting needles pierce said band of material and at the same time move in a transverse direction in the direction that said band of material is moving and at the same speed of movement all of the time that said needles are penetrating through said band of material.

Abstract: This invention relates to a warp knitting machine which is equipped with two longitudinal conveyors for conveying weft yarn groups towards a knitting head. The longitudinal conveyors comprise a plurality of hooks for engaging and holding the weft yarns and a weft yarn carriage is provided for laying the groups of weft yarns from one conveyor to the other. Each of the conveyors are provided with a depressing mechanism which includes a depressor which has an inactive position, an intermediate position and a depressing position. Means are provided for moving the depressor from the inactive position to an immediate position extending over a group of weft yarns laid between the hooks on one of the conveyors. Another means is provided for lowering the depressor from the intermediate position to the depressing position to depress the group of yarns into the hooks of the conveyor and for holding them there until the weft yarns are securely engaged in the hooks.

Abstract: A method and an apparatus for laying groups of transverse weft threads for a warp knitting machine, the threads being laid on two longitudinal conveyors running to the needle bed by means of a carriage which is reciprocated between and transversely to the direction of travel of the longitudinal conveyors. The weft threads laid after the forward movement lie parallel to the weft threads laid after the backward movement and with the same spacing from the adjacent weft thread in each case. First groups of weft threads are laid as a first layer and then groups of weft threads are laid as a second layer on the first layer in a direction of their weft threads which forms, with the direction of the weft threads of the first layer, an angle, particularly of at least 20.degree., which opens transversely to the direction of travel of the longitudinal conveyors.

Abstract: A needle bar of a warp knitting machine, the needles of which comprise a needle shank bent at an angle, the bent portion of which is supported against a correspondingly shaped abutment on the needle bar. The bent portion bears against an end face of the needle bar with a face which extends substantially perpendicular to the direction of movement of the needle through the goods.

Abstract: A compound needle for a warp knitting machine is disclosed comprising a needle stem having a hook (5) at one end and a breast portion (7) at the other. Between the two is a connecting portion (6) over which the warp threads (13) are laid. The needle stem has a longitudinal groove (8, 9) extending the length of the connecting portion (6) and into the breast portion (7). Slidably located in the groove (8, 9) is a slide memeber (3) having a forwardly extending hook closure member (4) which, in the rearward position of the slide is completely concealed by the breast portion (7). As the slide (3) is pushed along the groove (8, 9) by the operating arm (2) the hook closure member (4) collects the warp threads (13) and transports them into the hook (5) before finally closing the hook (5) prior to withdrawal of the hook (5) through the loop (15) to complete the stitch.

Abstract: Clutches in rotating drives of spools feeding threads to a weaving or knitting machine are disengaged when respective gravity-biased travelling compensating pulleys reach their lower limits and are reengaged when the respective pulleys reach their upper limits. The variable loops of thread formed by the compensating pulleys compensate for different speeds of thread take up by the machine.

Abstract: An apparatus for a warp knitting machine is disclosed as including individual sinkers movable between needles that hold a fabric, two right-angles sides of each sinker are disposed so that each knitted stitch row may be held away from the back of the needle.

Abstract: A warp knitting machine is disclosed as including slider needles, each of which has a needle shank of channel form with a hook head and a slider that covers the hook opening of the needle shank by means of a cover member fitted on the slider shank, such cover member is shorter than the hook opening of the needle shank, and the slider has such a cross-section that it carries the stitch in each instance without being supported on the needle shank and/or the hook head.

Abstract: An arrangement for a warp knitting machine is disclosed as including individual sinkers movable between needles that hold a fabric, two right-angles sides of each sinker are disposed so that each knitted stitch now may be held away from the back of the needle.

Abstract: Needle bar for warp knitting machines with a number of needles individually set into slits of the bar and having shafts cranked to such an extent that the head section of each needle is in alignment with the shaft section accommodated by the slit. Slackening of the needles will thus not influence the needle spacing.