Abstract: For use on a loom having a pattern selector, a plurality of heddle raising units, each comprising a pulley supported on a shaft and having a funicular cording member wound on the pulley and supporting a heddle, the shaft supporting two annular driving members on which the pulley is journaled, and the unit having means for rotating one annular member in one direction and the other annular member in the opposite direction synchronously with the cycle of the loom, and the pattern selector controlling a device for selectively coupling the pulley to the one of the annular members whose rotation is in the correct direction to wind the funicular member on the pulley to raise the attached heddle.

Abstract: A weft inserting nozzle including a weft inserting first hole through which a weft yarn is passed, an annular air jet opening defined around the exit of the first hole, and a weft inserting second hole extending coaxially and downstream from the annular air jet opening is disclosed. The second hole consists of an upstream positioned first section and a downstream positioned second section each having a uniform diameter throughout the length thereof, the diameter of the second section being greater than that of the first section which is equal to the outer diameter of the annular air jet opening.

Abstract: An adjustable wraparound sleeve A member is disclosed for attaching a center brace 26 between top and bottom frame slats 16, 18 on a heddle frame 10 of a loom. The sleeve member may be adjusted longitudinally on the frame slat and set in place by means of locking members 56 having means C for access from above each sleeve member 30, 32 with respect to vertical arrangement of the heddle frame 10 on the loom. The locking members 56 clamp the top and bottom frame slats 16 and 18 between block elements 44 and 50 in each sleeve member 30, 32. Each block element 44, 50 is threaded to receive locking members 56 from the top of either slat so that the sleeve member A may be interchangeably used on either slat.

Abstract: A filling-thread monitoring device for jet looms in which a filling thread is guided during its introduction into the shed of a loom in a first guide channel which is formed by spaced members and is partially open on its side, contains a first filling thread stop motion means for the giving off of a signal when the filling thread introduced does not reach its normal length and a second filling thread stop motion means spaced from the first stop motion means in order to give off a signal when the filling thread introduced exceeds its normal length by a predetermined amount. Between the two filling thread stop motion means, a guide member is arranged which extends over the space which is free of warp threads and has a second guide channel which lies in the extension of the first guide channel and is closed in the filling direction.

Abstract: A circular loom is disclosed for the manufacture of tubular fabrics made of threads and/or strips of polymeric materials.

Abstract: A fabric woven on a needle loom including a cover thread on the woven edge covering the exterior edge of the woven edge warp thread by a serpentine pattern interlocked with the weft loops and a binder thread knitted at the other edge covering the exterior edge of the knitted edge warp thread. Picot loops formed at both edges of the warp extend diagonally therefrom. A plurality of picot loops at the knitted edge include a non-picot weft loop substantially at the center of the plurality to secure the knitted binder thread to the warp edge.

Abstract: The flexible brake band is mounted between a fixed bracket and a movable carrier. The carrier has an arm which is telescopically mounted within a tubular arm mounted on the bracket and is biased by a spring away from the bracket. An adjustment screw is provided to adjust the tension of the spring and, hence, the brake band.

Abstract: A device for feeding yarn with a constant adjustable tension, for use in weaving looms and in other weaving machines, comprises a brake acting on an end cap of the winding drum--held stationary--of the device. The brake is a plurality of elastically yielding metal elements, positioned radially in a support designed to envelope the cap and mounted with possibility of self-centering in respect of the cap, these elements engaging the outcoming yarn about a circumferential area of the cap having a slightly smaller diameter than that of the winding drum of the feeding device.

Abstract: Method and apparatus are disclosed for weaving fabrics on a loom wherein, during the usual operation of the loom, specially arranged warp yarns, hereinafter called "decorating yarns" advancing from separate warp yarn supplies which are remote from the normal warp beam, are caused to cross over the normal warp yarns during shedding. The decorating yarns are under the control of unique heddles mounted in harnesses which are arranged for both sideways or lateral movement and also adapted for up and down movement. The unique heddles and harnesses are controlled in synchronism with the normal shedding of the loom so that the specially arranged decorating yarns are caused to cross over the usual warp yarns and then be projected into the shed to be held in place as the filling is projected through the shed and beat-up. Thus, the decorating yarns, which may vary from the usual warp yarns in any desired manner as, for example, count, color, fiber composition, etc.

Abstract: An inductive projectile sensor on a gripper shuttle weaving machine or loom comprises a flat induction coil surrounding at least one of the guide teeth which are mounted on the lathe beam of the weaving machine to form a guide duct for the projectile when passing through the weaving shed. Means for magnetizing the guide tooth or teeth, such as a permanently magnetized small plate or lamella, are provided beneath the induction coil to form a magnetic core or bridge between two neighboring guide teeth, one of which is surrounded by the induction coil.

Abstract: An apparatus for driving an index table which includes a first shaft, an index table rotatably mounted on the first shaft having grooves therein forming a Geneva gear and a mechanism for driving the table in rotation including a drive motor, a second shaft driven by the motor, a crank mounted on the second shaft, and a Geneva pin mounted on the crank. The grooves have force bearing walls which include straight portions and sector portions. The Geneva pin is engaged in the grooves in the table to effect stepwise rotation of the table to equispaced, predetermined angular positions. The second shaft and the grooves are spaced from each other such that the distance from the axis of the second shaft to the circumferential surface of the pin is less than the distance from the axis of the shaft to the straight portions of the force bearing walls of the grooves.

Abstract: A weft guide device in a jet loom having a reed carrier for carring a reed thereon is disclosed. The guide device made according to this invention generally comprises an array of weft guide members mounted on said reed carrier along the reed and each having a concave to provide a weft guide path, said concave being provided with a relatively narrow opening and defined by surfaces including a substantially vertically extending surface joining with said opening, and a surface opposite said substantially vertically extending surface through said concave.According to this invention, said opposite surface is inclined in a direction so that its upper portion is positioned nearer to said substantially vertically extending surface than is its lower portion.

Abstract: An actuation device for a drive element, such as the drive gear of a gripper needle encompasses a box which can be attached to the sley of a shuttlesess loom. Accommodated in this box is a traction means-transmission or drive containing a toothed belt of a drive pulley or disc which is operationally connected with the drive gear and a tensioning pulley or disc. The run of the toothed belt extends essentially parallel to a slide guide for a slide which is fixedly connected with the aforementioned belt run. The slide or carriage is moved to-and-fro by means of a lengthwise adjustable intermediate rod through the action of a crank drive. The adjustable spacing between the reversal points of the slide constitutes a measure for the insertion depth of the weft thread carrier into the shed. This enables a simple and robust as well as adaptable conception by means of which there can be obtained an extremely precise and unchanging insertion depth of the weft thread carrier into the weaving shed.

Abstract: The invention relates to shuttleless looms in which weft is carried through the warp shed by means of at least one weft carrier which is reciprocated into and out from the shed to cause the weft to be carried through the shed. In order to vary the speed of the weft carrier during its passage through the warp shed, a mechanism is provided including both a drive member connected to the weft carrier and a guide member, the drive member being connected to a reciprocating drive which also engages the guide member, the arrangement being such that during each loom cycle the guide member acts to cause the point of connection of the drive to the drive member to be altered so as to vary the speed of the drive transmitted to the weft carrier.

Abstract: Disclosed herein are apparatus and method of multi-shed weaving wherein a weft thread is inserted into a retained shed by a fluid jet. The movement of the fluid jet can be synchronized with the movement of the retained shed. The shed may be retained by a shed-retaining member or members adapted to removably receive one of the weft threads. A device is also disclosed for spreading apart the wrap threads to facilitate the insertion of the shed-retaining members into an open shed prior to its retention.

Abstract: In a circular loom in which at least one shuttle is continuously travelled in one direction along an annular guide member and a plurality of shed forming mechanisms arranged annularly and coaxially with the guide member are sequentially opened prior to arrival of the shuttle to form a successive sheds through which the shuttle is to be inserted and passed, a warp tension regulating and warp feed apparatus is mounted. In this apparatus, an annular supporting member fixed to a frame of the circular loom is disposed outside the shed forming mechanisms adjacently thereto, a plurality of dancing levers guiding corresponding warps through yarn guides mounted on the top ends thereof are pivoted on the supporting member for respective warps and resilient means for absorbing variations of tensions on the respective warps is connected to the corresponding dancing levers.

Abstract: A weft inserter for weaving machines wherein the weft supply is provided from a stationary package located outside the shed including a hand and a weft gripper having a rigid lower portion and a resilient upper portion. Ramp guiding means are provided for guiding the weft into an angle over a center ramp having a finger that bears downward upon the resilient upper portion of the gripper with the result that when tension increases in the weft, at least a portion of the increased tension is transmitted to the weft gripper in the gripping direction.

Abstract: The guide tooth of the weaving machine has an upper leg with a straight outside edge for passage through the spot threads in the low shed position in parallel relation. The length of the straight edge is greater than the interval between pairs of successive tangling points in the spot threads to insure entry between the threads without damaging the threads.

Abstract: The present invention relates to an adjustable fastener for fastening pulling cables to the suspension levers of textile dobbies of the negative type, said fastener being constituted by two parallel side elements which support a pin for the pivoting connection of the fastener to the end of the corresponding suspension lever, a curved lower guide, and an upper stop provided with two forks which are traversed by threaded end pieces fixed to the pulling cables and which form support for adjusting nuts.

Abstract: A weft guide device in a jet loom having a reed carrier for carrying a reed thereon is disclosed. The guide device made according to this invention generally comprises an array of weft guide members mounted on said reed carrier along the reed and each having a concave to provide a weft guide path, said concave being provided with a relatively narrow opening and defined by surfaces including a substantially vertically extending surface joining with said opening, and a surface opposite said substantially vertically extending surface through said concave.According to this invention, the upper portion of said substantially vertically extending surface is curved toward said opposite surface.