Abstract: In an attempt to form a compact arrangement of a control unit for a weaving machine, according to U.S. Pat. No. 3,759,298, undesired distortions result in the sequence of movement of the heddle frame due to the installation of a short connecting rod. To prevent this, the heddle frame actuating mechanism has one double arm lever pivotally supported on an arm of a further double arm lever, a connecting rod hingedly connected at its one end to a still further double arm lever. The arm of the further double arm lever and the arm of the one double arm lever are in alignment rectilinearly in the center-shed position and are together equal in length to the length of a first arm of the still further double arm lever, so that these two arms, the connecting rod and a connecting line extending between the fixedly arranged pivot axles for the further double arm lever and the still further double arm lever form a parallelogram.

Abstract: This invention relates to an improvement in a device for coupling a heddle frame to reciprocatable drive bars with a first coupling part mounted on the frame of the heddle and with a second coupling part mounted to a drive bar, one of the coupling parts comprising drive means insertable between two parallel wall parts of the other coupling part, the coupling parts acting together by means of drive surfaces arranged transversely to the drive direction of the drive bar, the improvement which comprises the drive means being a hook-shaped element having wedging surfaces extending essentially transversely to the main direction of force of the drive bar and diverging toward the hook opening, a shaped element supported by a bearing in order to be limited in rotation positioned between the wall parts and provided with correspondingly located mating wedging surfaces adapted to be received in the hook-shaped element, means for pivoting the drive bar, together with the coupling part thereon, in the plane of the heddle f

Abstract: A connecting rod having two clamping rails between which are clamped plates extending in a plane perpendicular to the plane of the clamping rails. The clamping is accomplished by screws. The plates have pivot joints which can be moved into one another at their ends. The connecting rod is adjustable in length.

Abstract: A loom includes a plurality of reciprocatably displaceable heald devices each generally disposed in a respective one of a plurality of parallel planes, and a plurality of levers each coupled through an intermediate element to a respective one of the heald devices. The respective pivot axis of each of at least two levers is differently spaced from the respective intermediate element to cause a respectively different displacement stroke for each of the at least two heald devices connected thereto. The respective pivot axis of each of the at least two levers is differently spaced from a plane which extends centrally of each heald device, parallel to the line of displacement thereof and perpendicularly to the planes of the heald devices.

Abstract: The invention relates to a weaving machine having plural heddle frames, into which heddles are threaded with a free floating characteristic or operational clearance onto thread rails. The heddles are arranged on the thread rails with the least possibility of movement and without a free floating capability during a portion of the heddle frame movement and with a free floating characteristic during the rest of the movement of the heddle frame to facilitate a self-alignment of the heddles with the warp threads. The free floating characteristic is initiated by periodically reducing the distance between the two thread rails.

Abstract: This invention relates to an improvement in the method for the single-filling manufacture of double nap fabrics, wherein the filing yarn for face and back fabrics is inserted at the same place into the shed, the improvement comprising superposing an additional lifting motion to the normal motion emanating from a dobby at least for shafts forming the shed of the warp for one of the two fabrics. The invention also relates to a weaving machine for the manufacture of double nap fabrics.

Abstract: An adjusting device in the connecting path between the jack lever of a dobby and the power transmitting rod to the heddle frame of a weaving machine. This adjusting device has at most the width of the pitch of the weaving machine. The clamping and adjusting screws on the adjusting device are on the front side which does not face the dobby. For the purpose of cancelling any clearance in the connection, wedges are arranged, which hold the clamp in the fixed position. With the aid of the clamp it is possible to adjust the size of the opening and the reciprocal position of the heddle frames.

Abstract: A heald or heddle frame for a high speed weaving machine comprises a side stay having a core made of metal, one portion of which is free to slide in a guiding groove of a device for guiding the heddle frame and the other portion of which is covered with plastic to provide additional strength, a pair of joining pieces projecting from the strengthened portion of the core of the side stay as one body and forming a tapered groove therebetween, a hollow cross beam of metal for receiving said joining pieces, and wedge means for pressing said joining pieces outwards being mounted in the tapered groove of the joining pieces.

Abstract: A heddle frame arrangement for a weaving machine having freely suspended heddles for a fast-running weaving machine.The upper bar and the lower bar of the frame are movable parallel to one another, so that not the entire frame must participate in the up and down movement. The heddles which are suspended on the movable bar each have, for balancing the movement, an elastic part.