Abstract: A seersucker loom is arranged such that puckering warp yarns are divided to form a shed during the weaving of a seersucker. The tension of the puckering warp yarns is maintained on a level below that of the tension of the ground warp yarns. The puckering warp yarns are slackened positively at least during a slackening period from a shed closing operation to a beating-up operating of every turn of the main shaft of the seersucker loom so that the tension of the puckering warp yarns are reduced to a value which below a predetermined tension of the yarns during a period other than during the slackening period. This enables the loom to slacken portions of the puckering warp yarns near the cloth fell sufficiently during the beating-up operation so that the puckering warp yarns are satisfactorily puckered.

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: A warp stop motion mechanism for a loom includes droppers adapted to fall under their own weight upon warp yarn breakage, and contact bars for receiving the droppers. The contact bars are held between a pair of upper and lower contact bar supports slidably installed on side frames and a warp yarn breakage detecting circuit is disposed between the upper and lower contact bar supports and adapted to be closed by the natural fall of the droppers.

Abstract: The warp yarn tensioner and warp yarn stop motion are mounted on a supporting and adjusting device of the loom so as to be adjustable together. The supporting and adjusting device includes a tube on which the tensioner and stop motion are mounted via support arms and cantilever beams. The support tube is adjusted relative to the loom frame by a single adjusting mechanism having an adjusting spindle which can be rotated in order to cause rotation of the tube. The warp yarn tensioner and warp yarn stop motion can be pivoted together about the axis of the support tube. The stop motion may also be adjusted vertically by means of a supporting device and can be pivoted about a pivot by means of a separate adjusting spindle.

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: 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.

Abstract: A warp stop motion apparatus includes individual disengageable coupling and control elements which have fork-like ends that are capable of surrounding the lateral sides of drive pins extending outwardly from the opposite sides of the end portions of the respective inner movable serrated bars which slidingly extend into a housing part that is oscillated back and forth by an individual electrical motor. Oscillation of the housing part causes the inner serrated bars to oscillate in their longitudinal direction with respect to outer stationary serrated bars in which they are positioned.

Abstract: A warp stop motion device of a weaving machine has upper and lower supports respectively for contact bars and guide bars lying in transversely spaced vertical planes with vertically extending legs thereon having adjustment and locking means to facilitate a clamped vertical adjustment between the upper and lower supports. The lower supports are cantilevered at one end to a longitudinally extending beam serving as a warp end carrying support, and the upper supports are cantilevered at one end to the one end of the lower supports. Thus, the opposite ends of the upper and lower supports are free and unsupported for the reception of the guide bars from such ends during assembly.

Abstract: A warp stop-motion mechanism including a plurality of electrodes and means supporting the electrodes in a common plane. A drop wire is provided for each warp yarn and the warp yarns support the drop wires about the electrodes in normal operation. A control bar is provided at a lower elevation than the electrodes and is in continuous engagement with the warp yarns during normal operation of the loom to prevent repetitive contact of the electrodes by the warp yarns and drop wires. Means are provided for adjusting the warp stop-motion mechanism longitudinally, transversely, and vertically.

Abstract: A warp stop motion of the dropper type for automatically stopping the loom associated therewith upon breakage of a warp yarn, including a pair of side frames, each of which doing away with conventional T-shape, is of inverted L-shape comprising a horizontal arm portion for supporting contact bars and separator bars and a vertical arm portion whose upper end joins one end of the horizontal arm portion and whose lower end joins a horizontal shaft. Each side frame has recesses formed in the inner surface thereof for receiving one of the respective ends of the separator bars, and a spring is disposed between one end of each separator bar and the bottom of each recess.

Abstract: The connecting part for electrical warp stop motions on weaving machines has two rectangular housing shells (2,3) pressed against each other at their open sides by means of a threaded pin (10) screwed into the first housing shell (2). The screw-head of the threaded pin is in the shape of a knob (11) and presses against the second housing shell (3). In the longitudinal sides (4,6) of both housing shells (2,3) are supporting slots (9) at equal distances to take up the contact bars. On the interior base (12,15) of each housing shell (2,3) is a strip (13,16) of elastic material and on each strip a contact foil (14,17) for conducting electricity to all the contact bars, the narrow edges of which have perfect contact with the contact foils, even at varying height resulting from deviations in manufacture, due to the elastic material under them.

Abstract: The invention comprises a fully adjustable and pivotal support for a warp stop-motion which may be finely adjusted to its optimum operable position and then pivoted upwardly and out of the way when desired, as while changing the warp beam, and instantly and accurately retured to said optimum operating position by means of a positive stop which positions the warp stop-motion mechanism in said optimum operative position automatically without further attention by the operator except to tighten the few bolts necessary to hold the warp stop-motion mechanism in said optimum operating position.

Abstract: The holding device is provided with a shaped body for raising and lowering the plate-shaped element located within the fixedly mounted support. The shaped body may be in the form of a wedge shaped body or in the form of an eccentric. Suitable means are provided for holding the wedge shaped body in place. Raising and lowering of the plate-shaped elements allows the electrical contact elements to be raised and lowered to adapt to the operating conditions of the weaving machine.