Abstract: A knitting cam unit and transfer cam unit combination for V-bed flat knitg machines wherein needle butts of the needle bodies of slider needles are selectively lowerable in the needle channels of the needle beds by means of a needle selection device, and wherein the slider needles have sliders provided with slider butts and arranged for the donation of stitches, comprises stationary and movable cam elements for engagement with the needle butts and the slider butts, and also comprises pressure cam elements. In order to be able to carry out any combination of stitch formation and tuck loop formation for each traverse of the carriage, and in order to be able to transfer any stitches, pure knitting cam units and transfer cam units are provided. These define cam channels for the butts arranged symmetrically with respect to each cam unit central transverse axis.

Abstract: A flat knitting machine for the production of knitted pieces with intarsia comprises a yarn guide with a yarn guide sheave mounted to be vertically displaceable on a yarn guide box, and a slider on the yarn guide box and which is displaceable horizontally and is arranged to displace the yarn guide vertically.

Abstract: A flat knitting machine includes a device for adjusting the retractor elets for the needles in the cam systems on the carriage of the machine for the setting of the stitch tension. In order to simplify the tension adjusting mechanism and simultaneously to produce a sensitive setting mechanism, there is provided on the carriage a single electrical stepping motor, with position sensor, for counterbalanced adjustment of the leading and of the trailing retractor elements of each cam system.

Abstract: A knitting-transfer cam unit for V-bed flat knitting machines wherein needle butts of the needle bodies of slider needles are selectively lowerable in the needle channels of the needle beds by means of a needle selection device, and wherein the slider needles have sliders provided with slider butts and arranged for the transfer of stitches, comprises stationary and movable cam elements for engagement with the needle butts and the slider butts, and also comprises pressure cam elements.

Abstract: A single or multiple cam unit for knitting machines, with needle feet of knitting needles selectively lowerable by means of a needle selector device into the needle channels of the needle beds, comprises fixed and movable cam elements of the cam units (D) and pressure cam elements (17, 18, 19, 20) for each cam unit (D) cooperating with the needle selector device. In order to effect a transfer of stitches independently of the carriage traverse direction and independently of the transfer direction towards the front, towards the rear or in both directions at the same time, each cam unit (D) is constructed symmetrical about the central axis (M) of the cam unit (D), each cam unit (D) includes a cam element (8) oscillatable in the cam plane for extending the needles during knit-stitch formation as well as a controllable cam element (6) for tuck-stitch formation and, in each cam element (D), fixed transfer cam elements (27,28) and fixed acceptor cam elements (24,23) for stitch transfer are provided.

Abstract: A double knitting cam unit for knitting machines, with working jacks arrad in the needle channels of the needle beds behind the knitting needles and Jacquard jacks arranged behind these, includes superposed needle cam units (AD), jack cam units (BD) and Jacquard jack cam units (CD) with fixed and movable cam elements. In order to enable a transfer of stitches independently of the carriage traverse direction and independently of the transfer direction towards the front, towards the rear or in both directions at the same time, the cam units (AD, BD, CD) are made symmetrical to the central line (L) between the two parts of the double knitting cam unit and each needle or jack cam unit (AD, BD) contains movable transfer cam elements (1/1) and each jack or needle cam unit (BD, AD) contains movable acceptor cam elements (9, 8) for stitch transfer.

Abstract: A flat knitting machine with a carriage movable over the needle beds has presser foot wires with free trailing ends arranged in holders to extend in the direction of travel of the carriage in front of the withdrawal positions of the needles. For simple construction and selective utilization of the presser foot device the holders for the presser foot wires are secured on a slider which slides along the needle beds on a thread guide rail, and the slider is selectively entrained by the carriage by means of entraining pins carried displaceably on the carriage. The holders for the stroking-in wires are preferably displaceable vertically towards the needle bed combs.

Abstract: A slider needle for knitting machines, particularly flat knitting machines, omprises a needle body with needle hook and needle butt, and a slider with a slider butt and mounted to be displaceable relative to the needle body. In order to produce a slider needle of simple construction with the needle butt capable of being depressed into the needle bed, the needle body consists of a guide shaft provided with a slot for receiving and guiding the slider and a flexible shaft extending from the guide shaft and projecting rearwardly from the guide shaft towards the needle butt, with the flexible shaft carrying the needle butt and being engageable from below in the needle channel by a tilting lever.

Abstract: A slider needle for knitting machines, particularly flat knitting machines, omprises a needle body with needle hook and at least one needle butt, and a slider equipped with slider foot and mounted to be displaceable relative to the needle body. In order to ensure trouble-free and reliable separation of the old stitches from newly laid yarn a short swivel detent is mounted on the needle body behind the needle hook. The length and shape of this swivel element is chosen so that in the normal position of the needle, with the needle hook closed by the slider, the swivel detent is masked by the slider in the vertical direction, while when the needle hook is open the swivel detent projects proud of the needle body and above the slider in both its end positions.

Abstract: In the needle selection device on a knitting machine equipped with a Jacqd mechanism, the knitting needles can be brought into various positions in which they are inactive, or are active for knitting, for forming tuck loops and for the transfer of stitches, with the aid of cam means on the carriage. In order to create a needle selection device which is simple in structure and is functionally reliable, blocking levers corresponding in number to the number of needle channels and arranged in accordance with the gauge of the needle separation are provided on a mounting rib extending over the length of the needle bed. At each selection position, on the carriage, there is provided a cam element for pivoting the blocking lever and also an electromagnet controllable for needle selection and having associated therewith a tripping pin for pivoting the blocking lever.

Abstract: A flat knitting machine with a carriage movable over the needle beds incls stroking-in wires mounted in holders on the carriage with free wire ends trailing in the direction of carriage traverse in front of the withdrawal positions of the needles. These wires are moved into and out of their working positions at the regions where the carriage reverses its direction of movement. In order to make possible a selectively controlled switching of the stroking-in wires into and out of effective operation, indexing cams engageable with entraining fingers on the holders are arranged on the machine frame to be displaceable perpendicular to the longitudinal axes of the needle beds, and lifting cams which can be switched into and out of action are mounted on the carriage for selective displacement of the indexing cams on the machine frame.

Abstract: A straight knitting machine having two needle beds with knocking-over combs isposed in an inverted V-shaped configuration and a sliding carriage located above said needle beds is further provided with horizontal stop edges on said combs beneath the crossover zone of the needles associated with said needle beds for preventing the upward movement of the knitted piece upon activation of the needles. A pair of rotatable heads are mounted on a common support movable with said carriage with each head having a layering device mounted thereon and displaced 90.degree. from a stripping device and a hold down device which are also mounted on each rotatable head. The heads are rotatable at the end of each traversing movement of the carriage so as to locate the layering device and hold down device of one head in advance of the knitting zone and the layering device of the other head in trailing relation to the knitting zone during a subsequent pass of the carriage.

Abstract: A system for checking the functional state of the operating magnets in a tbed knitting machine includes a microprocessor, a keyboard, a display unit, and sensors detecting short-circuit and open-circuit conditions in the magnets and their connections. In order to avoid dismantling the machine to check the magnets, the magnets are subjected in turn to pulse sequences at respective different frequencies and their behavior is monitored. One can monitor the vibrational noise of the magnets or the rise time of current and voltage in the magnets. The checking process can be initiated automatically, for example each time the machine is started up, or controlled manually via the keyboard. Frequencies within the range of 1 to 50 Hz are preferably used.

Abstract: The zone of movement of the reciprocating carriage of a flatbed knitting machine is guarded, to prevent injury to the operator, by a light barrier set up between each end of the machine and the carriage. Only the barrier on that side of the carriage towards which the carriage is moving at any given time is effective to trigger braking of the carriage and stopping of the machine if the barrier is penetrated. The carriage may carry a double-sided reflector with combined light emitter/receiver units positioned at each end of the machine.

Abstract: A left-left flat knitting machine is comprised of two needle beds and kning needle sets arranged in a common plane, with needle hooks provided on both ends of the needles and with bars to activate the knitting needles in the needle bed channels of both needle beds. The knitting needles are formed as double hook needles 1 with two needle humps 10, 11 and the bars are formed as push bars 2, 5 composed of respective stitch transfer bars 3, 6 and tongue bars 4, 7 with integral feet. The structure assures simpler construction of the knitting needles and the tools which activate them and also enables the use of any desired knitting steps for the pattern. According to a further development of the double hook needle 1, a short control tongue 60, 61 is hingedly connected at each needle hump 10, 11.

Abstract: As the carriage of a flatbed knitting machine traverses the needle bed, a lse generator which comprises a toothed disc and two cycle signallers at its circumference produces pulses in synchronism with the carriage movement and corresponding to the needle cycle for electronic control of the machine. The toothed disc has a tooth pitch which corresponds in whole number multiples with the pitch of the needles in the bed. The pulse generator may be located on the machine frame or on the carriage. In the former case the carriage can have a pick-up which entrains a chain stretched on the machine frame with the toothed disc rotatable jointly with one of the sprocket wheels for the chain. In the latter case the toothed disc, carried by the carriage may be rotated by a coupled pinion which meshes with a rack stationary on the frame and co-extensive with the traverse of the carriage. In each case the pulse generator produces synchronized control pulses without direct scanning of the needles in the bed.

Abstract: A flatbed knitting machine having electronic control includes memory and trol units associated with the machine, a data entry device (11) for the entering of data into the machine, and also indicator means (12, 13), wherein upon the entering of data by way of the data entry device the indicator means provides a guidance report for the user, data called up for entry can be directed to one of several types of machine, each next step in the entry of data can only be effected in accordance with the requirement shown by the indicator means, and at least one key (.noteq.) is provided for stepping-on the indicator means. For extremely simple operation of the data entry device (11) and in order to achieve complete programming of the patterning and of the usual control data for the plan run of the machine, with all the parts necessary for the functioning of the entry device built into the entry device itself, the data entry device (11) has only one keyboard with ten number keys (0 to 9), a decimal point key (.

Abstract: In a flat knitting machine having an electrically controlled selecting dee for the needles, the selecting jacks (11) controlling the needles are movably mounted in the needle grooves of the needle bed in the same direction as the needles and include staggered feet which form foot rows in the longitudinal direction of the needle bed. For each of the foot rows a control element is provided on the carriage, which can be moved into and out of operative position between adjacent feet of a foot row. For the purpose of increasing the performance of the flat knitting machine and to achieve a simple and easy carriage structure, all control elements (2) are preferably formed as light double-armed levers and are pivotably mounted on an axle attached to the carriage and extending transversely to the longitudinal direction of the needle bed.

Abstract: The end run reversals of the reciprocating sled of a flat bed knitting mane are smoothly implemented by a roller 12 mounted on a hub 5 fixed to a link 4 of a drive chain 1 at one end. The other end of the hub is fixed to a member 6 slidable in a groove 7 of a lateral rail 8 mounted to the cross slide 9 of the sled. The roller runs on a semi-circular guide surface 13 of a support segment 14 mounted to the machine frame at each end adjacent a chain sprocket wheel 2. The support segments absorb the inertial forces of the sled and cross slide to thereby prevent the tilting of the chain links at the sprocket wheels and the attendant varying of the sled stroke.

Abstract: A rocker arm 5 is pivotably mounted in a needle shank 15 and biased towards n open position of the needle hook 6 by a spring 17. Upstanding feet 10, 12 on respective lever arms 13, 14 of the rocker arm implement the positive and accurately controlled opening and closing of the needle hook by lock elements 9, 11 slidable along the needle bed.