Abstract: The heat exchanger is constructed with an expansion zone between the two groups of support plates for the helical tubes. In addition, the upper group of support plates is connected at the upper ends to a cross. A lower group of support plates is connected to a lower part of a displacement member which slides in an upper part of the displacement member. Links are also provided to secure the lower support plates to the bottom of the pressure vessel. The inlet and outlet connections for the secondary medium are provided at opposite ends of the coiled tubes.

Abstract: The picking apparatus operates to pick a weft yarn into a shed with a predetermined excess length. A weft stretching nozzle receives the excess length at the forward end of the weft thread while stretching the weft yarn from the catching side of the shed. After termination of picking and during an initial phase of the beating-up movement of the reed, the weft yarn is pulled back on the picking side by the amount of the excess length. The stretching effect on the weft yarn is effective and uniform and obtains a better fabric during weaving.

Abstract: The weaving machine has a weaving rotor with beating-up lamellae each of which has a beating-up edge perpendicular to the beating-up line during beating-up of the weft yarn. In addition, a rotatable shell is provided to operate after each beating up of a weft yarn in order to draw the cloth in the take-off direction at at least the peripheral velocity of the beating-up lamellae until these lamellae pass out of engagement with the cloth. The shell can be oscillated in synchronism with the beating-up operation via a cam disc coaxial with the rotor and a linkage secured to and end of the rotatable shell 9. The arrangement prevents the cloth from being displaced from the cloth plane by the beating-up lamellae.

Abstract: The weaving rotor has a row of radial bores disposed on a generatrix coincident with the relay nozzles of a picking comb. A stationary control tube which is supplied with compressed air is disposed within the rotor and has a row of slots which register with the rotor bores and which are disposed on a helix offset from the generatrix of the rotor bores in the direction of rotation. During rotation of the rotor, air is sequentially directed to the relay nozzles.The control tube also has a second row of bores to permit the blowing of air through all of the relay nozzles simultaneously.

Abstract: At the weaving rotor there are alternatingly arranged with respect to the direction of rotation thereof first lamellae combs formed by beat-up lamellae for the weft threads and second lamellae combs formed by guide lamellae for the warp threads and including shed-retaining elements for the upper shed position of the wrap threads. The shed-retaining elements for the lower shed position are arranged within each pair of lamellae combs formed by a first lamellae comb and a second lamellae comb at the intersection point of the two groups of warp threads which assume the upper and the lower shed positions, respectively, and are formed by an element extending essentially parallel to the lamellae combs. In the lower shed the warp threads are thus always located in a common plane and the elements forming the shed-retaining elements for the lower shed position can be installed and disassembled without interference with the lamellae combs.

Abstract: At the weaving rotor there are arranged in alternating fashion in respect of a predetermined direction of rotation thereof beat-up combs for the weft threads and guide combs containing shed retaining elements for the upper shed position of the warp threads. In the running direction of the warp threads control means are provided in front of the weaving rotor for laterally deflecting and selectively allocating each warp thread to a shed retaining element. Each beat-up comb and each guide comb alternatingly includes first and second beat-up lamellae and first and second guide lamellae, respectively. Compared to the first beat-up and guide lamellae, the second beat-up lamellae and second guide lamellae each contain a recess at the location of the lamellae combs which first immerse into the warp threads during rotational movement of the weaving rotor.

Abstract: The present invention relates to a serial shed weaving machine with a weaving rotor. Guide channels for weft threads transported by a flowing fluid are mounted on the weaving rotor. The guide channels are formed from a plurality of elongated, tube-like channel elements having a closable weft thread exit gap. The channel elements have complementary end configurations such that they can be moved together to form a closed guide channel. The channel elements are movable back and forth in the weft insertion direction. When the channels are moved in a first direction, the closed guide channel is opened and gaps are formed between the channel elements and each channel element is moved out of its associated part of the warp shed. When the channel elements are moved in a second direction, each channel element is moved back into its associated part of the warp shed and the guide channel is closed. The total excursion of each channel element in each direction is at least as great as the length of the element.