Abstract: Mechanism for launching grippers in gripper looms, in which the launching power source is stationary and the gripper is provided with a guideway and means for controlling and defining the gripper path, such means being connected to the beat-up mechanism of the loom. The mechanism has a launching arm and an impact element which is connected thereto by means of a connecting rod and pivotal joints on the launching arm, as well as on the impact element, each of which provides for two degrees of freedom of motion between each pair of parts which it connects.

Abstract: A device for maintaining an insertion band against an oscillating insertion band wheel by providing a flexible element which is movable in oscillating fashion in synchronism with the insertion band and rests from the outside against the insertion band under an initial stress.

Abstract: A control device for actuating the weft carriers attached to opposed flexible tapes in a shuttleless loom. One end of each tape is attached to a driving arm with the opposite ends of the latter being fixed on oscillatably driven hub members. One side of each hub member has a disc element mounted thereon for movement therewith. The periphery of the disc members are disposed in operative association with the ends of the driving arms to which the tapes are attached and define platforms onto which the tapes are wrapped and unwrapped during their withdrawal from and insertion into a shed of warp threads by the driving arm.

Abstract: Drive mechanism for a rapier-type loom, including a timing belt to which the rapiers are attached and an operating means, including a dwell device, for reciprocating the belt.

Abstract: This invention relates to an improvement in a weaving machine with filling-yarn insertion by means of inserters adapted to be alternatingly advanced into and retracted from the shed and being composed of long support devices having gripper systems at the ends thereof, said support devices being adapted to be driven and both supported and guided outside the shed in their rectilinear motion, and being supported between guide rollers, the improvement comprising solid lubricating means fixed with respect to the machine and in contact with said support devices in an unstressed part of bearing means for said support devices.

Abstract: A driving mechanism comprises a rotatable shaft (34), a drive arm (56) mounted on and rotatable with said drive shaft and having a swing end projecting radially therefrom on which a counterbalanced drive link (63) is rotatably mounted and arranged to rotate in a plane parallel to the plane of rotation of the drive arm, means (65,66,67,68,69) for rotating said drive link in a direction which is opposite to that of said drive arm, balance means (71) forming a part of said drive arm and rotatable therewith about said drive shaft so as to counterbalance the weight of said drive arm (56) and drive link (63) irrespective of the angular position of said drive link (63) relative to said drive arm (56) and a pair of flexible cables (W1,W2), each interconnected at one end with a driven element (C) to be reciprocated and each being secured at its other end with a fixed element (51,54) and the intermediate portions of said links being looped about pulley means (50) mounted on the swing end of said drive link (63) in such

Abstract: A plurality of generally parallel, side-by-side warp tows of carbonaceous precursor material are interwoven with fill yarns forming a fabric of low density cross weave to facilitate handling of the warp tows for oxidation, carbonization and other processing thereof. A different fill yarn is interwoven with the warp tows from each of the opposite edges of the fabric so as to form a succession of generally V-shaped loops in each warp yarn with the loops of the two different warp yarns being staggered along the length of the fabric. Each loop of warp yarn is comprised of a pair of lengths of warp yarn which enter the fabric from spaced-apart locations along an edge of the fabric and undulate under and over the warp tows in a like sense which is opposite the sense of the undulations of the immediately adjacent loops prior to joining at a point across part but not all of the width of the fabric.

Abstract: A band-gripper loom having band guide rollers supported on a housing surrounding the band wheel to prevent the insertion band from lifting off the band wheel, with each band guide roller supported on the inner race of ball bearings.

Abstract: The invention pertains to a driving device for rapiers on rapier looms of the type equipped with two rapiers, each carrying a gripper, whereby the rapiers are driven by the motor of the loom, which is provided with an adjustable reduction gear unit, via, for each rapier, a multiplier driving device comprising a series of successive points of rotation, whereby means are provided for the adjustment of the relative distance between two successive points of rotation of at least one multiplier driving device, characterized by the fact that aforesaid adjusting means are fitted with control means with which they can be continuously adjusted between two limit values selected in advance.

Abstract: Magnet means are illustrated carried along the raceboard of a shuttless loom extending within as well as outside the warpshed for exerting a stabilizing force until the opposed rapiers have reached a position outside the warpshed on a return stroke.

Abstract: A gripper weaving machine having flexible weft inserting or picking bands formed from plastics material reinforced with carbon fibers.

Abstract: Drive mechanism for a rapier-type loom, including a timing belt to which the rapiers are attached and an operating means, including a dwell device, for reciprocating the belt.

Abstract: A weft-laying needle for a shuttle-less loom has a U-shaped cross section with a relatively thick web and a pair of thinner shanks. The needle is composed of a body of synthetic-resin impregnated carbon fibers in which a woven glass fiber layer is inlaid below the outer surface and inwardly of the inner surface over the shanks and web at uniform distances from these surfaces.

Abstract: A rapier for use with a rapier loom has a drive member which is spaced laterally from the rapier but extends parallel to the rapier, the rapier and drive member being connected together by the butt end of the rapier, so that in use the drive member can pass underneath the shed and need not enter the shed with the rapier.

Abstract: In a weaving loom without shuttles, the weft carrying grippers freely bear on the lower lap of the warp yarns and are guided, at least laterally, by a plurality of very simple and light guides, emerging from the sley and/or from the reed.

Abstract: A shuttleless loom including a pair of lance bands operative to insert weft threads through a shed of warp threads is constructed with a driving crankshaft which operates to synchronously drive both the lance bands and the reciprocating sley of the loom. A sector gear is mounted upon the sley for reciprocal pivotal movement whereby the lance bands are driven through a gear train meshing with the sector gear. The sector gear is driven through a connecting rod mounted eccentrically upon a drive wheel which is driven by the crankshaft. Because of the eccentric mounting of the connecting rod upon the crankshaft, the reciprocating pivotal motion of the sector gear imparts increased acceleration to the lance bands midway through their travel and a decreased acceleration at the ends of the lance band stroke.

Abstract: A lance driving mechanism for a shuttleless loom includes a sley which is mounted for reciprocal pivotal movement, a pivotally mounted sector unit having a sector gear thereon, a lance band mounted on the sley for reciprocal movement relative thereto and lance band driving gears coupling the sector gear with the lance band to impart driving motion to the lance band upon pivotal movement of the sector unit. A connecting rod is attached between the sector unit and an eccentric crank in order to drive the sector unit. One end of the connecting rod is eccentrically mounted upon the crank and the eccentric mounting thereof is adjustable. The sector unit is mounted upon a support member which is, in turn, pivotally mounted for reciprocal motion with the sley and which includes thereon the lance band driving gears.

Abstract: The invention pertains to an improved slay for weaving looms, consisting of the slay itself and of two slay swords, characterized by the fact that at least the slay swords are built as hollow structures, whereby the head of each slay sword is attached to the corresponding end of the slay and along the extension of same, and whereby the width of the slay swords is greater than that of the slay itself.

Abstract: The present invention concerns a mechanical multiplier for weaving looms, for instance for the drive of rapiers or lances, of the head frames or such like.

Abstract: Weaving machine with weft supplied from spools located outside the shed, has at least one weft inserter actuated by a driving wheel which is driven in a reciprocal movement of rotation, and further includes, for the control of the driving wheel, a toothed belt in cooperating relation with a pulley which is coupled with the driving wheel, and a driving system coupled to the belt in order to impart a reciprocal movement thereto.

Abstract: A loom is provided with a longitudinal sliding surface over the entire length of travel of the outer extremity of the needles and behind these latter; the coupling system which connects the driving member to the outer extremity of the needles comprises a shoe which slides over that face of the longitudinal surface which is directed towards the needles; an oscillating arm which drives the needles is urged elastically so as to apply the shoe against the longitudinal sliding surface.

Abstract: An improved tape wheel for shuttleless looms having flexible guide members carried thereon for retaining a flexible tape in close proximity with the outer periphery of the tape wheel and for releasing the same therefrom during the tape's function of inserting and withdrawing a weft carrier from a shed of warp threads.

Abstract: A weft carrier positioning device for shuttleless looms having an elongated hollow body insertable for a portion of its length into the warp shed through the sheet of upper warp threads and into the pathway of a weft carrier. By turning the loom's handwheel a selected carrier fixed on the end of a flexible tape will enter the elongated hollow body and pass through the latter to an accessible position out of the shed and above the upper sheet of warp threads.

Abstract: Reciprocatory motive means is coupled with weft inserting rapier means, the movement of which into and out of the warp shed is controlled and guided by low friction swivel means which cooperates with the reciprocatory motive means in such manner as properly to position the rapier means relative to the loom lay on which the reciprocatory motive means, the rapier means and the swivel means are mounted.

Abstract: A weft band with carrier for looper looms in which the weft band has a material recess or recesses in the area of the connection of the weft band to the looper.

Abstract: A band wheel for insertion of a filling thread by alternate rotation of the band wheel formed from a hub, a wheel body connected to the hub, and having flat elements which extend for stiffening both transverse to the axis of rotation and parallel to it.

Abstract: A drive device for a carrier of a filling-thread gripper head on a loom in which the carrier is moved back and forth by a drive wheel that is rotated alternately in opposite directions through a planetary gearing arrangement, the operation of the drive device being synchronized with the movement of the batten and harness of the loom.

Abstract: A rapier loom comprises at least two rigid weft carriers, rocking lever mechanisms adapted to impart opposed reciprocatory movements to said carriers, a transverse shaft, a sley, two lateral swords carrying said sley, and means mounting said swords for oscillatory movement about said shaft, said sley being constituted by a one-piece hollow beam which extends at each side of said loom beyond the pertaining sley whereby to form two extensions one at each said side of said loom, and struts rigidly connecting each one of said two extensions to a corresponding extension of said shaft.

Abstract: A shuttleless loom having means for sequentially forming warp sheds driven by main motive means and having rapier means driven by auxiliary motive means for inserting weft threads into the warp sheds in synchronism with the formation of the sheds is provided with disjointable coupling means arranged to couple and uncouple the auxiliary motive means and the main motive means in a manner such that the rapiers may be held out from the shed during shutdown conditions and maintained in a predetermined relationship relative to the auxiliary motive means in such manner that synchronous operation is insured when the loom is again operated.

Abstract: The present invention relates to a shedding drive arrangement for a loom, with a dobby driving the upper and lower sheds symmetrically and with a coupling arrangement coupling the rockers of the dobby with the weaving shafts to produce a non-symmetrical shed movement. By "rockers" or jack levers there are generally understood elements which transmit the driving movement produced by the dobby and available at its output side.

Abstract: A textile machine incorporates a crank and a connecting rod which carries a mass of such value and so positioned that the moment of inertia of the connecting rod about the axis of the crank pin introduces inertial variations which are opposed to and of absolute values at least equal to the inertial variations due to the combined sley and weft inserter mechanisms as well as their controls. The invention is especially applicable to the regularization of the running of looms with stiff weft inserters.

Abstract: A shuttleless loom having warp shed forming means and rapier type weft inserting means is provided with lay means which is pivotally mounted for oscillatory beat-up movement on a rotatable shaft, rotation of the shaft being synchronized with beat-up movement of the lay means by lay coupling means and the weft inserting means being interconnected with the shaft by weft inserting coupling means so as to insure a compact structure which is mechanically sturdy and which is timed in such a way as to afford rapid rapier insertion and withdrawal movement together with adequate dwell time for the weft insertion elements and shed forming means during beat-up operations of the lay means.