Abstract: A system for controlling the horizontal movements of yarn carrier bars in an automatic loom or knitting machine includes a plurality of yarn carrier bars mounted for horizontal movement, a respective stepper motor operatively connected to each yarn carrier bar to control its movement, a respective programmable motor control unit electrically coupled to each stepper motor, a programmable central controller electrically coupled to all motor control units, an electrical power supply, and an energy storage means which provides sufficient energy for operation of the stepper motors and control units for a short period when power from the power supply is unavailable. Each stepper motor includes an output shaft, and a respective shaft position encoder measures and supplies output shaft position information to the motor control unit.

Abstract: In a crochet galloon machine, the needles (11) are fastened to a needle bar (12) reciprocated by at least a connecting rod (20) for the control of needles, operatively engaged with a needle control eccentric (21) carried by the rotary main shaft (22). Associated with the needles (11) are closure latches (13) fastened to a thrust bar (14) integral with at least a rod (18) carrying out a reciprocating movement upon command of a rocker lever (29) the opposite ends of which are fastened to respective connecting rods (30) for the control of latches (13). Each connecting rod (30) is driven by a latch control eccentric (31) operated by the main shaft (22).

Abstract: The device comprises a number of threading tubes 2 oscillatably mounted on a thread guide rail 5 provided with an oscillatory motion. Each theading tube 2 is movable against the action of a first return spring 6, upon command of an actuation cable 9 guided within a sheath 10 and connected to a control plate 19 selectively operable in synchronism with the thread guide rail 5. Each sheath 10 has one end 10a which is fixed with respect to the thread guide rail 5 and a second end 10b connected to a fixed support 11, a second return spring 15 being interposed therebetween, the stiffness of said second spring 15 being greater than that of the first return spring 6. A preloading plate 17fastened to the fixed support 11 acts upon locating elements 13 in order to keep said second return springs in a preloading condition.

Abstract: It is described a fabric heating unit 1 comprising a pair of heating elements 7, 8 each of them exhibiting an active surface 10a designed to come in contact with one of the faces of a fabric 3 coming out of a crochet galloon loom. Associated with each heating element is an insulating shield rotatably pivoted according to an axis parallel to the respective heating element. The insulating shields can be simultaneously brought from a rest position in which each of them is disposed close to the respective heating element on the side opposite that facing the fabric, to an operating position in which each shield is interposed between the heating element and the fabric to separate and thermally insulate the latter from the heating element.

Abstract: The control member herein described comprises an electromagnet 30 which is fixed with respect to a thread guide rail and acts on a swinging arm 37 l pivoted with respect to the electromagnet itself and slidably engaging a lifter 14. Due to the energization of the electromagnet 30 the swinging arm 37, is brought, against the action of a return spring 39, from a rest position in which the lifter is disposed in a disengagement condition, to a working position in which the lifter is in an engagement condition and is engaged by actuator means oscillating in synchronism with the thread guide rail in order to cause the actuation of a threading tube associated with said lifter.

Abstract: The device herein described comprises a pair of pulling rollers 3 which engage a manufactured article 4 produced by knitting members 5 acting upstream of the pulling rollers themselves, in order to interlace weft yarns with warp yarns 4a. A first driving mechanism 6 connects the pulling rollers 3 to a rotating main shaft 7, so that the pulling rollers too are rotated in order to pull the manufactured article apart from the knitting members during the operation of the loom. The device further comprises feed rollers 17, 18 rotated by a second driving mechanism 22 connecting them to the first driving mechanism. Feed rollers 17, 18 act upstream of the knitting members, upon the warp yarns 4a to move them forward towards the knitting members 5 and give them an appropriate tensioning.

Abstract: The creel structure of the invention comprises a supporting framework 2 consisting of posts 3 and cross-pieces 4 disposed according to a parallelepiped configuration and a secondary frame 5 consisting of two cross-pieces 6 and a number of posts 7 each of them being provided with supports 8 for the bobbins 9 extending in opposite direction towards opposed parallel planes defined by the most extending surfaces of the parallelepiped framework configuration. In each of said planes an alveolus-like structure 11 formed of hexagonal meshes 12 extends and to each of said meshes is fastened a first thread tension device 13, said supports for the bobbins being distributed according to a symmetrically offset configuration. Second thread tension devices 28 are provided and they are located on support bars 29 mounted in cantilevered fashion on the posts 3 of the supporting framework 2, the second thread tension devices 28 of each support bar 29 corresponding to one horizontal row of the supports 8.

Abstract: Thread guide rail for crochet galloon machines exhibiting a rectangular cross section 2 on the major base of which is obtained an inclined flat 3 provided with a longitudinal groove 4 extending over the whole length of the rail. The rail, on the surface opposite said inclined flat, comprises two series of opposite transverse grooves 7a, 8a disposed in alignment with each other and between which a central recessed portion 9 is defined which extends longitudinally over the whole length of the rail. The rail can be associated with a number of thread guide elements 10, exhibiting each a rectilinear portion 12 adapted to engage into two aligned transverse grooves, followed by a U-shaped portion 11 engageable on either side of the rail through the engagement of a fitting projection 14 provided thereon, into the longitudinal groove 14. Seen in section the transverse grooves exhibit a profile adapted to mate with that of the corresponding section of the rectilinear portion.

Abstract: The invention pertains to the technical field of the knitting machines and it particularly relates to a control device for the selection of weft yarns.The device of the invention comprises selective tensioning means consisting of movable plates individually integral to tie rods, as well as of electromagnets individually facing said movable plates and globally integral to a movable support approaching said plates and moving away therefrom provided with an alternate motion in synchronism with the movement of the needles of the respective knitting machine. Said electromagnets are individually excited according to a predetermined work program, by electronic circuits.

Abstract: The invention pertains to the technical field of knitting machines and it particularly relates to a process and a knitting machine to produce figured fabrics, for example with variegated inscriptions or patterns. The technical problem to solve is how to obtain, by means of completely automatized knitting machines, variegated inscriptions or patterns which neatly alternate on a fabric without interfering with the ground of the same.

Abstract: The invention particularly relates to an improved knitting machine to produce figured fabrics.The knitting machine has high working capacity and is capable of producing various patterned and colored fabrics.

Abstract: Twisted beard needle for crochet frames raschel chain and similar products comprising a rectangular stem, a heel on one end of the stem and a beard with the needle point of the beard bent towards the heel on the other end of the stem in a direction displaced on the side with respect to the longitudinal axis of the needle and in repose being positioned within the cross section of the rectangular stem, the portion of the beard bent towards the heel consisting of two segments inclined upwardly to a point extending above the cross section of the rectangular stem to form an obstacle to the loop which slides on the beard so that the loop is obliged to slack its sliding and to widen to overcome the above-mentioned obstacle constituted by the point, said widening determining the recovery of the thread from the stitch previously formed to thereby tighten more the stitch.