Abstract: A heddle shaft is formed of shaft rods which have hollow ends containing inserts fixedly positioned therein and lateral supports which include projections that respectively extend into recesses in the inserts. Clamping screws, which can extend through the shaft rods, apply a compressive force to clamp the projections in place and create detachable corner connections between the shaft rods and the lateral supports.

Abstract: A heddle for a weaving machine is in the form of an elongated strip having opposed end portions lying in a common flat plane, the strip having a thread eye portion intermediate such end portions. The thread eye portion lies in a plane rotated in the range of 10.degree. to 20.degree. about the central axis of the heddle, the eye portion comprising a pair of spaced legs defining a thread eye. The legs lie in respective planes parallel to and spaced from opposite sides of the common flat plane of the heddle.

Abstract: A releasable corner structure for a heddle frame includes a projection carried by a side support, wherein the projection is received in a hollow space of a frame stave and is clamped in position by a clamping screw. The clamped projection is in the form of a flat body formed in one piece with the side support, and defines an outer frame having an opening within which flexible vibration dampers are positioned to lie between the outer frame of the projection and a metallic member that fits within and is spaced from the sides of the frame opening. The metallic member is riveted to a U-shaped sheet-metal casing that is adapted to surround the outer frame with a slight clearance space. Into the open top of the U-shaped sheet metal casing is riveted a rigid ledge member, against which the clamping screw acts.

Abstract: In a heddle frame with detachable corner connections each heddle support has a horizontal projection extending into a cavity of the frame stave and is clamped in place with the use of set screws. The frame stave is constructed of stable longitudinal bands and very thin side walls interconnected as by welding. A rigid insert is inserted at opposite ends of the hollow frame stave, the insert comprising spaced, parallel and longitudinal extending support blocks lying parallel to the longitudinal bands of the frame stave, and reinforcing walls connected to the support blocks, the walls having a wall thickness about 3 to 6 times greater than that of the thin side walls of the frame stave.

Abstract: A projection extending from a side support for defining a detachable edge connection at the heddle frame, which detachable edge is clamped down by a clamping screw carried in a hollow frame stave. A vibration damper element is positioned between the side support and the projection and is connected thereto preferably by bonding. The vibration damper element is an elastomer and has a strip-like shape having a width corresponding with the width of the side support. The side support is connected to the frame stave at each edge connection via the vibration damper element, and vibrations occurring in high speed weaving machines, which vibrations can lead to material ruptures at the side support, are dampened.

Abstract: A frame stave includes a supporting bar designed as hollow body and adjoined by a supporting member for the heddle carrying rod. The supporting bar reaches its bending strength by a massive longitudinal bar of a substantially square cross-section which forms one of the narrow sides. The other narrow side is formed by the leg of an angeled supporting member for the heddle carrying rod. Two extremely thin walled sheet metal members are mounted preferably by a laser welding to the longitudinal bar and the leg and form the two broad sides. A filler body is located in the hollow inner space of the supporting bar which is for instance of a honey-comb like structure in which a plurality of individual hollow spaces or chambers are formed, which are filled by a sound attenuating material which remains elastic. Strips of material which are impregnated by a bonding agent close the filler body off at both sides and are bonded to the sheet metal parts.

Abstract: A heddle shaft has only one heddle supporting member at the opposite ends of which side supports are provided to guide the heddle shaft in the weaving machine. The supporting member has a heddle slide bar and an auxiliary heddle holding element extending parallel to and spaced from the heddle slide bar. All heddles are held virtually without play at the heddle slide bar and are held with play at the auxiliary holding element, and the opposite free ends of the heddles are not firmly held.

Abstract: The end loop of a heddle has at its opening an inner edge that comes into contact with the slide bar, the inner edge having an asymmetric contour relative to the longitudinal line of symmetry passing through the opening with an arc on the side of the back part which has a greater radius of curvature and an arc on the side of the free shank of the end loop which has a smaller radius of curvature. Compared with conventional heddles with short corner arcs at the inner edge of the end loop this end loop is strengthened, particularly in the zone of the back part prone to breakage, by the provision of the arc with the larger radius of curvature on the side of the back part. A rectilinear section connecting to the two arcs prevents jamming of the heddle on the slide bar.

Abstract: A heddle is held at one single end section in a heddle frame having a single supporting member, the heddle being held by the provision of a groove-shaped opening to engage a slide bar of the supporting member with little play relative thereto. Another groove-shaped opening of the heddle at its one end section can be provided to engage an auxiliary slide bar on the supporting member with much more play relative thereto. The opposite, non-driven terminal end of the heddle is formed as a guide element to enable the automatic drawing-in of the warp threads. In addition, such guide element functions to line up the plurality of heddles present in the heddle shaft by the provision of a rod-shaped body which extends through aligned openings in the guide elements of the heddles, so as to prevent the heddles from shuttling back and forth in the weaving operation, and from mutually snagging at their terminal ends.

Abstract: A frame holder to which a heddle frame is coupled by a fastener operating in accordance with the toggle lever principle and pivotably mounted at the upper end of the frame holder by means of a pivot axis. The fastener includes a lever, consisting of two parallel levers, which is pivotable around a first pivot axis whereby an operating lever is pivotably mounted to its other end at a second pivot axis. A bolt which is pivotably arranged on this axis is located in the operating lever which is structured as a hollow rod. Due to elongate holes formed in the hollow rod and through which the axis extends the hollow rod is longitudinally displaceable relative to the bolt.

Abstract: The end eyelet of a heddle comprises a back section lying opposite the hook end and having a gradually increasing width at the terminal end of the heddle for increasing the cross-section of the end eyelet at a zone of the end eyelet subjected to high stress.

Abstract: A supporting bar of a heddle frame comprises a hollow body and a connecting part (2) adjoining at a narrow side of the hollow body the support of the heddle carrying rod (3) located at its end. The supporting bar including these parts forms a welded structure comprising planar sheet metal section (4-14) forming walls of such parts. Relatively thin sheet metal section (5, 6, 9, 10) forming longitudinally extending broad side walls are welded to sheet metal sections (4, 7, 8, 11, 12) having a considerable larger material thickness and forming longitudinally extending narrow side walls. The planar sheets are welded together by the use of laser welding to form the supporting bar which has a light weight and high alternate bending strength.

Abstract: The contact clamp having a plurality of slots for the contact bars comprises a cover designed as circuit board. It includes at its inner side a plurality of conductors which respectively connect a metallic disk located at the other end of the conductor which pin belongs to a multiple contact plug located on the top of the casing. Two metallic disks located laterally adjacent are allocated to one contact bar including two conductor bars and elastically supported contact pins urged against the conductor bars contact mentioned disks. The separate electrical circuit for every contact bar formed by respective two conductors allows a connection of every contact bar to an individual indicating device.

Abstract: The contact bar comprises an outer bar having a U-shaped cross-section and a plurality of bar portions located therein and separated therefrom by an insulating layer. The bar portions are insulated against each other by intermediate insulating layers in partition planes extending laterally as well as parallel to the longitudinal edge. The bar portions are produced suitably by a punching out of a bar such that they, when fitted into each other, will supplement themselves again to a bar such that a shorter bar portion cut proceeding from the upper longitudinal edge of a longer bar portion fits into the longer bar portion. The longer bar portion is at the side facing the end of the contact bar, at which only the connecting contact for a power source is located is considerably narrower than at the opposite side where the drop wires will contact the bar portion upon a yarn breakage.

Abstract: One of the bars of a contact bar, preferably the inner bar (12) has an electrical resistance which increases linearly along its entire length and which can be scanned as measurable value at any desired point along said bar. A preferable embodiment for this purpose is a metallic conductive spiral (11) which is wound onto a body of insulating material (10). An inner bar (12) configured in such a manner is held in an outer bar (13), the upper part of which is of U-shaped cross section, whereby a layer of insulating material (14) separates said inner bar from said outer bar of U-shaped cross section. The metallic conductive spiral (11) has, compared to a solid bar, a substantially higher electrical resistance which is suited for the purpose of method of measurements according to the principle of the electrical resistance bridge in order to localize a dropped drop wire on the contact bar in the event of a warp end breakage.

Abstract: One coupling element secured to a heddle frame has a pivotally mounted bolt latch for interlocking with another coupling element connected to a drive member when the another element is inserted in an opening of the one element to couple the heddle frame with the drive member. Toothing on the bolt latch and toothing on the another coupling element come into the locking position by a toggle lever pivotally mounted on the one element. The toggle lever has a manual operating lever, and a further lever element hinged thereon and comprising a bolt-shaped part surrounded by a tensioned helical compression spring which is supported between two abutments which are constructed as hinges for connection of the lever to the manual operating lever and to the bolt latch. One abutment is fixed to the bolt, and the other abutment is slidable relative to the bolt to a limited longitudinal extent determined by stops formed by an over-sized bore in the hinge receiving a pin carried by the bolt.

Abstract: On the frame stave (1) of a heald frame there is by means of a rod holder (5) a heald carrying rod (6) arranged in such a way that its distance to the frame staves (1) can be changed. An eccentric ring (10) with a polygon shaped outer circumference engages for this purpose in a rectangularly shaped recess (7) provided in the rod holder (5). The eccentric ring (10) is securely connected against free rotation with an intermediate element consisting of a concentric ring (11) and a center core (12) which is securely connected against free rotation.

Abstract: A contact bar assembly for the warp stop motion of a loom includes an inner bar (1) having a beam-shaped part (2) of insulating material at the upper edge of which a groove (5) is provided for the reception of a metallic serrated bar (6), and the entire inner bar can longitudinally reciprocate in an outer bar (8) of a U-shaped cross section. The outer bar (8) has longitudinally spaced slots (12) each for the reception of a guide piece (12) of synthetic material which can easily be inserted and removed, each guide piece having a longitudinal slot (13) with a larger configuration (14) at its lower section. The beam-shaped part (2) of synthetic material has a lower section of T-shaped cross-section (4) and (10) which engages with slot (13) and its larger configuration (14) for holding and guiding the inner bar (1) in such a manner that a vertical separation of the inner bar from the outer bar is prevented, although the inner bar is capable of longitudinal reciprocation in the outer bar (8).

Abstract: A heald frame comprises two lateral supports which each have a projecting portion (2) which is received in a recess (3) at the end of a frame stave (4). A wedge (9) is mounted in the frame stave (4) within the recess (3) so that it is closer to the heald-carrying rod. A surface (11) of the wedge (9) is inclined towards the end of the frame stave (4) and cooperates with a correspondingly inclined surface (6) at the lower side of the projecting portion (2). The surfaces are pressed together by means of a clamping screw (8) which presses on the opposite surface of the projecting portion (2). The lateral support (1) is pulled against the frame stave (4) as a result of the engagement of the inclined surfaces of the wedge and projecting portion.

Abstract: In a weaving machine having a warp stop motion feature which includes upper and lower vertically aligned supports for supporting contact bars and guide bars, the lower support being cantilevered to a longitudinal beam, the warp ends extending parallel to the upper supports and through eyelets provided in drop wires resting on the warp ends which are carried by an upper surface of the beam. The beam comprises a hollow body having a wear resistant element mounted along an upper side thereof, the element being replaceable and being of a material harder than the beam itself.