Abstract: A heddle frame (1) is driven via drive rods (15), which pass through its lateral sampsons (13). To that end, the lateral sampsons (13) each have a corresponding channel (19). The play between the circumferential face (22) of the drive rods (15) and the channel wall face (21) of the respective channel (19) has an intermediate layer (24), which extends over the full length, or portions, of the drive rod (15). The intermediate layer (24) preferably comprises an impact-proof, permanent-elastic, damping material. A slight residual play allows the introduction of the drive rods (15) and the intermediate layer (24) into the channel (19) without force.

Abstract: The shaft rod (2) according to the invention has, at one of its narrow sides, at least one recess (21) which is later provided in the shaft rod and in which a reinforcing element (24) is glued. The material externally of the shaft rod forms securing zones (32, 33) which serve for the attachment of additional elements. The recesses are preferably applied in such a manner that hollow spaces free from Eloxal coating are exposed which may be utilized as recesses into which reinforcing elements are glued.

Abstract: A profile rod (15) preferably consisting of an extruded aluminum profile has lateral walls (18, 19) that have two snap-in zones (25, 26) that project toward each other and extend parallel to each other over the entire length of the profile rod (15) and that are located on the same height. The distances of the two snap-in zones (25, 26) from the closest strip (21) correspond to each other. In this manner, the profile rod (15) may be made extremely thin-walled, on the one hand, and offers possibilities for fastening profile pieces that permit the input of larger forces into the profile rod (15) as well as the output of such forces therefrom, on the other hand. This concept offers a basis for the construction of light-weight heald shafts that can still handle great loads.

Abstract: The heald shaft (1) for weaving machines is divided into a machine-resident frame part (14) and a removable frame part (15). While the removable frame part (15) supports a heald mounting rail (30) that must be released from said frame part for a heald change, said removable frame part is associated with an additional heald mounting rail (33) that is releasably held on the lower shaft rod (16). The upper shaft rod (25), together with the two heald mounting rails (30, 33), forms a removable frame part (15). The lower shaft rod (16), together with the lateral supports (19, 20), forms a machine-resident frame part. Preferably, the lateral supports (19, 20) and the lower shaft rod (16) are rigidly connected to each other.

Abstract: The heald shaft (1) for weaving machines is divided into a machine-resident frame part (14) and a removable frame part (15). While the removable frame part (15) supports a heald mounting rail (30) that must be released from said frame part for a heald change, said removable frame part is associated with an additional heald mounting rail (33) that is releasably held on the lower shaft rod (16). The upper shaft rod (25), together with the two heald mounting rails (30, 33), forms a removable frame part (15). The lower shaft rod (16), together with the lateral supports (19, 20), forms a machine-resident frame part. Preferably, the lateral supports (19, 20) and the lower shaft rod (16) are rigidly connected to each other.

Abstract: A heddle (1) for flat, band-shaped warp threads (36) is provided with a thread eyelet (7), for which the width preferably exceeds the height. A thread eyelet (7) of this type prevents a deformation of the band-shaped warp thread (36), in particular a compressing on the sides during the shed formation. In addition, the heddle (1) according to the invention is preferably provided with thread guiding surfaces, which are longer than the thickness of the heddle (1) body (3), relative to the running direction of the warp thread. As a result of these measures, the wear on the heddle (1) as well as the warp thread (36) can be reduced.

Abstract: A profile rod (15) preferably consisting of an extruded aluminum profile has lateral walls (18, 19) that have two snap-in zones (25, 26) that project toward each other and extend parallel to each other over the entire length of the profile rod (15) and that are located on the same height. The distances of the two snap-in zones (25, 26) from the closest strip (21) correspond to each other. In this manner, the profile rod (15) may be made extremely thin-walled, on the one hand, and offers possibilities for fastening profile pieces that permit the input of larger forces into the profile rod (15) as well as the output of such forces therefrom, on the other hand. This concept offers a basis for the construction of light-weight heald shafts that can still handle great loads.

Abstract: For releasable attachment of heddle bars (8) to shaft rods (2) of a heald shaft (1) of a weaving machine, holding devices are provided which are composed of two sheet metal members, with one part forming a flat surface for bonding to the shaft rod (2). The parts that remains free receives respective metal ribs (31, 32), which may be riveted or welded to the sheet metal members. The reinforcing strips engage securing elements for a bracket to position the latter in a form-fitting manner. The sheet metal members are tightened against the bracket, e.g., by bolts or rivets, to firmly clamp the bracket in the desired position. The reinforcing strips are configured and secured to the sheet metal members such that the reinforcement simultaneously serves for the exact positioning of the bracket (22), and for preventing a vertical shift of the bracket during operation of the heald shaft.

Abstract: A heald having a heald body (8), whose thickness increases toward the yarn eyelet (6). The lateral surfaces of the heald body (8) constitute guiding surfaces which are oriented in the warp yarn direction and which, adjacent the yarn eyelet (6), serve as spacers (35, 36) for holding at a distance adjoining yarn eyelets (6) of adjoining healds.

Abstract: The heddle according to the invention, provided in particular for band-shaped warp threads, comprises two bands (5, 6) that extend in vertical direction during use, are arranged at a distance parallel to each other and hold two thread support elements (16, 17) disposed between them. The thread support elements (16, 17) together with the respective flat segments of the bands (5, 6) between them jointly form a flat thread eyelet (18) that is oriented transverse to the warp thread and the longitudinal direction (7) of the heddle. The bands (5, 6) preferably extend with undiminished width up to the heddle support rails (2, 3) and are provided with end eyelets (10, 11, 12, 13) for positioning them on the support rails.

Abstract: A heddle for jacquard machines essentially consisting of fiber-reinforced plastic material, with a thread eye formed by a mail or thread eyelet member (12) of a harder material. The heddle body comprises two legs (3, 4). Between the relatively wide thread eye region (5) and the legs (3, 4), ramp sections (6) are provided on the mail, which sections have a length that is greater than the length of the thread eye (1). Preferably, the length is greater than twice the longitudinal extension of the thread eye, and in most cases, is between 10 and 30 mm. As a result of this measure, the wear of the plastic material in the vicinity of the thread eye (13) is kept minimal enough that neither any damage to the stiffening fibers (22) in the body of plastic material nor any damage to the warp threads needs to be feared.

Abstract: An inventive heddle for jacquard machines essentially consists of fiber-reinforced plastic material, whereby the thread eye is formed by a mail (12). The heddle body comprises two legs (3, 4). Between the relatively wide thread eye region (5) and the legs (3, 4), ramp sections (6, ) are provided, which sections have a length that is greater than the length of the thread eye (1). Preferably, the length is greater than twice the longitudinal extension of the thread eye. In most cases, said length is between 10 and 30 mm. As a result of this measure, the wear of the plastic material in the vicinity of the thread eye (13) is kept minimal enough that neither any damage to the stiffening fibers (22) in the body of plastic material nor any damage to the warp threads needs to be feared.

Abstract: A shaft rod (2) having, particularly in its mid region, a particularly low mass. The shaft rod has an upper ledge (11) and a lower ledge (12) which have a reduced thickness in the mid region of the shaft rod. As a result, the load induced by acceleration forces is significantly less in the mid region than in conventional constructions. By virtue of the reduced acceleration forces, the extent of bending of the shaft rods in the middle is less and therefore a shaft rod of such a structure is better adapted for use in very rapidly operating weaving machines.

Abstract: The heddle according to the invention, provided in particular for band-shaped warp threads, comprises two bands (5, 6) that extend in vertical direction during use, are arranged at a distance parallel to each other and hold two thread support elements (16, 17) disposed between them. The thread support elements (16, 17) together with the respective flat segments of the bands (5, 6) between them jointly form a flat thread eyelet (18) that is oriented transverse to the warp thread and the longitudinal direction (7) of the heddle. The bands (5, 6) preferably extend with undiminished width up to the heddle support rails (2, 3) and are provided with end eyelets (10, 11, 12, 13) for positioning them on the support rails.

Abstract: A heddle (1) for flat, band-shaped warp threads (36) is provided with a thread eyelet (7), for which the width preferably exceeds the height. A thread eyelet (7) of this type prevents a deformation of the band-shaped warp thread (36), in particular a compressing on the sides during the shed formation. In addition, the heddle (1) according to the invention is preferably provided with thread guiding surfaces, which are longer than the thickness of the heddle (1) body (3), relative to the running direction of the warp thread. As a result of these measures, the wear on the heddle (1) as well as the warp thread (36) can be reduced.

Abstract: A heddle (14) of the invention is distinguished by end eyelets (15, 16) of reduced size, with which heddle support rails (6, 7) of reduced cross section are associated. The axial play of the heddles on the heddle support rails (6, 7) is limited to from 0.5 mm to 1.5 mm. The lateral play is in the range of 0.2 mm to 0.5 mm. This system formed of heddle support rails and heddles is especially suitable for particularly rigid heddle shafts for power looms with an extremely high operating speed.

Abstract: The shaft rod (2) according to the invention has, at one of its narrow sides, at least one recess (21) which is later provided in the shaft rod and in which a reinforcing element (24) is glued. The material externally of the shaft rod forms securing zones (32, 33) which serve for the attachment of additional elements. The recesses are preferably applied in such a manner that hollow spaces free from Eloxal coating are exposed which may be utilized as recesses into which reinforcing elements are glued.

Abstract: The heald according to the invention has a heald body (8), whose thickness-increases toward the yarn eyelet (6). The lateral surfaces of the heald body (8) constitute guiding surfaces which are oriented in the warp yarn direction and which, adjacent the yarn eyelet (6), serve as spacer means (35, 36) for holding at a distance adjoining yarn eyelets (6) of adjoining healds.

Abstract: For a releasable attachment of shaft staves (8) to shaft rods (2) of a heald shaft (1) of a weaving machine, holding devices are provided which, for example, are composed of two sheet metal members, of which one part forms an adhesive surface for bonding to the shaft rod (2). The part that remains free serves for receiving respective metal reinforcing strips (rib (31, 32)) which may be riveted or welded to the sheet metal members. The reinforcing strips serve for receiving securing elements for a bracket and for positioning the latter. In this manner the positioning is effected in a form-fitting manner. The sheet metal members are tightened against the bracket preferably by bolts for firmly clamping the bracket in the position determined by the form-fit. In the alternative, rivets may also be used which, when required, may be released, for example, by pushing them out with simple tools.

Abstract: A shed forming device (1) for a power loom has a plurality of heddle shafts, to which a drive mechanism with a plurality of servo motor groups (13, 14) is assigned. The servo motor groups are located below each of the heddle shafts (3 through 8), in each case as a cluster, and they are located with their pivot axes (27 through 32) on a circle, an ellipse, or a similar figure. They are also axially offset from one another. Each servo motor (15 through 20) is provided with a driven lever (21 through 26). The free ends of all the levers are located approximately at the center of the circle or ellipse or other figure of revolution. They are connected to the heddle shafts (3 through 8) via connecting rods (34 through 39) and form various angles with the connecting rods (34 through 39). The result is a drive mechanism with little inertia, low resilience, and little play. Very fast shaft motions can be attained in a controlled way.