Abstract: A flat knitting machine with a take-down system comprising a rotatable take-down roller and a counter-pressure member, between which the knitted fabric produced is clamped to draw it down during the production of the fabric, is improved in such a way that the take-down system functions faultlessly with fabrics which gradually increase in width as well as with fabrics which involve a rapid and considerable increase in the number of needles.

Abstract: A device for the determination of the position of leading or trailing draw-down elements which can be shifted to operated in opposite directions in flat-bed knitting machines has a single step motor for shifting the draw-down elements, a position sensor and a switching element movable in relation to each other and cooperating with each other, the switching element indicating a basic position of the two draw-down elements. So that in such a device besides the basis position of the two draw-down elements the shifted position, i.e. which of the two draw-down elements is in the draw-down position, can be machine-internally determined, a second switching element is provided, which is operationally connected with the position sensor, the second switching element and the position sensor being movable in relation to each other and the second switching element being synchronously movable with the first switching element.

Abstract: Data processing apparatus for a flat knitting machine having several cam systems usable in both travel directions and having needles or needle jacks disengageable from the cam tracks of the cam systems, contains an optimisation circuit (15) with at least one microprocessor, with which circuit is achieved, with the data available from several store areas (16-20), whatever is the optimal limitation of the carriage stroke and at the same time an adjustment and pre-adjustment of the yarn guides (24) corresponding thereto, via thread guide carriers.

Abstract: A device for the control of a flat-bed knitting machine for needle selection and/or the determination of the position of the carriages on the needle beds is provided with a pulse generator device having magnetically controllable resistors in the form of double differential magnetoresistors and being fixed on a first machine element, and with a magnetically conductive pulse generator board device being fixed on a second machine element. The two machine elements are movable in relation to each other and the magnetoresistors generate separate and phase-shifted in respect to each other pulse sequences during the relative movement to the pulse generator board device.

Abstract: A device for the control of a flat-bed knitting machine for the positional determination at lift reversal of the carriage assembly driven by a reversible motor has a phase-shifted pulse generator device on the carriage assembly which can be moved back and forth and a stationary pulse generator board device in the area of the needle bed arrangement. With such a device a reproducible lift reversal can be performed in the area of the ends of the needle bed as well as at any desired location along the needle bed arrangement, the pulse generator board device has a pulse generator board extending along a needle bed of the needle bed arrangement.

Abstract: In the dust extraction appliance for flat knitting machines, a vacuum is generated in the suction nozzles (17) by means of at least one suction-flow device (16) which is arranged on the slide of the flat knitting machine and into with a conveyed, via a flexible delivery line (20), compressed air which carries the sucked-up dust further into a dust collecting bag (18) via an exhaust-air duct (22).

Abstract: The dust extraction device located on the cam carriage (13) of the flat knitting machine has separate, independently operable suction fans (27) for the front and rear needle beds (11,12), which, by lowering of the suction nozzles (29,30), the use of smooth-walled suction ducts (31,32) and coupling of the dust containers (37) with the suction ducts and with the suction fans (27) ensures a good cleaning effect with low expenditure of energy and a maintenance free operation.

Abstract: The yarn feeder slide proposed for intarsia knitting on a flat knitting machine and provided with a braking device has brake shoes (22,23) projecting sideways on pivoted levers (16,31) and which extend into a special longitudinal slot of the associated yarn feeder rail and can be jammed therein. Two control regions (19,38) for the braking device or for a moveable yarn feeder arm are provided and are spaced from one another in the direction of displacement of the yarn feeder slide (10) so that the yarn feeder driving member located on the cam carriage of the flat knitting machine can be selectively lowered into both control regions (19,38) of the yarn feeder slide.

Abstract: The flat knitting machine (10) has, on the rear side of its machine body (12), bobbin holders for additional bobbins (19), the yarn of which can be processed on the same flat knitting machine or on an adjacent flat knitting machine (10'). The additional bobbin holders can be arranged on individually removable rear-wall panels of the flat knitting machine (10) (FIG. 1).

Abstract: A cam system for flat-bed knitting machines has a needle cam unit which has at least one integrated knitting cam loop transferring cam for both knitting and loop transferring directions, of which the knitting cam has adjustable sinker elements on both sides and the loop transferring cam has transfer cam parts with a central lobe, located above the knitting track, for transferring the loops and receiving cam parts associated with them having a central receiving lobe and an oblique face that is operative in a trailing fashion. The cam system also has a depressor apparatus, in which the needles supported in needle tracks of the needle beds are controlled by pressure jacks acting upon needle jacks, the pressure feet of the pressure jacks being movable into different tracks, which are located in the planes of pressure strips.

Abstract: A flat-bed knitting machine has been described which is provided with needle sinkers arranged in a knitting cam system of a cam box carriage featuring several cams adjustable by means of stepping motors and having an electronic control unit, which features a storage device for controlling the stepping motors. In order to make the knitting density variable not only in the longitudinal direction, i.e. uniformly as a whole, row by row, but also in the transverse direction across the knitting with knitting machines of this type, the stepping motors are controlled by the storage device, one motor of which, in each case, is associated with a pair of needle sinkers consisting of preceding and trailing needle sinkers during the stroke of the cam box carriage and in synchronism with the individual needles.

Abstract: In the yarn tension regulating device for knitting machines in which the yarn (25) runs through a yarn tension sensor (24) and a yarn brake (20) automatically adjustable in dependence upon the indication of the yarn tension sensor, there is located directly in front of the automatically adjustable yarn brake (20), in the direction of travel of the yarn, a yarn forwarding device, in particular a yarn storage feeder (13), by which the tension imparted to the yarn on its path from the yarn spool to the yarn brake is relieved. Between the yarn brake (20) and the yarn tension sensor (24), which follows it in the direction of movement of the yarn, is located a known yarn take-up (21), whereby the automatically adjustable brake (20) constitutes the yarn brake usually provided for this yarn take-up.

Abstract: A control magnet assembly (10) for a pattern apparatus in knitting machines, for electrically controlled needle selection, has selection magnets (29, 30), which are provided with permanent magnetic retaining pole zones and with control pole zones with which control coils (42, 43; 52, 53) that are triggerable in accordance with the pattern are associated, and against which armature elements (26) operatively connected with the needles (18) can be brought. In a control magnet assembly (10) of this kind, optimal magnetic conditions in the control pole zone are to be provided such that a uniform and reliable throwing off of the appropriate armature elements (26) is always attained. To this end, a measuring head (15, 25) is provided for detecting the magnitude of the magnetic field in the control pole zone, and a circuit layout is provided between the measuring head (15, 25) and the control coil (42, 43, 52, 53).

Abstract: The sinkers of both needle beds of a double bed flat knitting machine are pivotable so as to form a complete bridge over the gap between the needle beds. They have a loop-forming edge which is formed, with respect to the direction of take down for the knitted fabric, underneath the projections of the sinkers, which make up the bridge. Holding down of the old stitches in the gap between the needle beds is therefore ensured and a loop equalizing movement can be effected by means of the sinkers.

Abstract: A flat-bed knitting machine having a needle bed apparatus and an associated carriage apparatus movable longitudinally thereon and having a data processing unit which controls the cams and/or selector units among others and store pattern information in memory and which has an input keyboard is described. To make the input keyboard accessible to the operator of such a machine during observation of the knitting process, yet not have this keyboard hinder access to the essential parts of the machine, the input keyboard is disposed, from the standpoint of the machine operator, at the level of and in an area in front of the needle bed and carriage apparatus in the longitudinal direction of the machine, in front of a transparent cover, which is also movable in the longitudinal direction of the machine, keyboard being movable parallel to and independently of this cover.

Abstract: The yarn tensioning device for flat knitting machines has for each yarn (20) to be processed a pivotable support (23), for yarn guide members (25-31), located in the region of an end of a needle bed, preferably outside a covering panel (16) of the machine. Each pivotable support 23 has on a projecting part (23b) a yarn clamp (35) which enters the covering panel (16) through an aperture (22) and constitutes an auxiliary member during threading of the yarn. The pivotable support (23) also carries the yarn take-up (31/32) and a number of adjustment and control members of the yarn tensioning device.

Abstract: In the flat knitting machine with a needle selection device, the needles (12) are selected at double selection points and the non-selected needles (12) are locked by means of a locking jack (25) and the control butt (22) of their needle jack (19) is removed from the cam tracks. Force is transmitted to the needle (12) at a special coupling position (23/24) from the control butt (22) of the needle jack (19) articulated to the needle (12), and to increase the control possibilities without provision of additional cam tracks, presser cam elements (57-59), which act on the depressor butts (26) of the locking jacks (25) can be displaced in the plane of the cams. (FIG. 1).

Abstract: A flat-bed knitting machine having a spool table disposed above the needle bed and carriage apparatus, preferably in a rear area of the machine, and on which there are a plurality of yarn spool holders is described. In order to make the spool table of such flat-bed knitting machines useable for other purposes, and also making the spool table easier to handle during assembly, the invention provides that the spool table comprises a plurality of interconnected extruded aluminum profile elements, which have integrated securing means on the surface for subsequently detachably securing yarn spool holders, and that the profile elements are provided on their lower portion with guide recesses, extending in the longitudinal extension of the spool table, for a protective cover and for an operating panel along with its control cables as well as for a trailing cable device.

Abstract: A flat-bed knitting machine having a spool table disposed above the needle bed and carriage apparatus, in a rear area of the machine, is described. A multiplicity of yarn spool holders, which are movable into a front area above the needle bed and carriage apparatus, and a plurality of yarn supply devices are held on the spool table. To make the individual yarn spools of such a flat knitting machine more accessible, with less effort, even during machine operation, the yarn spool holders are divided into sets of a plurality of holders, and each set of holders is secured on a pull-out rail of a pull-out device. The pull-out rail is movable relative to a guide rail of the pull-out apparatus, and the guide rail is secured on the stationary spool table.

Abstract: In the present invention, the entire equipment, a suction blower with drive motor, suction nozzles (1) directed towards the needle beds (2) and at least one due collecting chamber (5) for the dust extraction device for flat bed knitting machines, is arranged on the machine carriage (14/15).For this, a dust collecting chamber (5) is designed within the inner space of a hollow carriage bracket (14,15) and the collected fibre dust or lint can be compacted and discharged by means of a conveyor screw (45).