Abstract: An adaptive self-centering device (ASCD) which uses one or more ratchet-pawl mechanisms. The hysteretic slip force of the ASCD preferably comes from a friction mechanism. The self-centering originates from the ratcheting of the pawl over the ratchet wheel and a self-centering device, in response to a force from an apparatus such as a spring. The nonlinear hardening of the apparatus, which conforms to the favorable adaptive behavior sought in modern day passive devices, stems from the mechanism of the lever within the apparatus that transforms the linear motion into rotatory motion.

Abstract: A drive mechanism for driving a heald frame of a weaving machine, the drive mechanism having a sensor device, wherein the sensor device has at least three members having both a target set with one or more targets and a detector set with one or more detectors, wherein one of the detector set and the target set is arranged at the swivel lever and the other one is arranged stationary on the weaving machine, targets of the target set and/or detectors of the detector set have different characteristics for generating a first signal when approaching the measuring position from the upper position or when departing from the measuring position towards the upper position and for generating a second signal when approaching the measuring position from the lower position or when departing from the measuring position towards the lower position, and the second signal differs from the first signal.

Abstract: The lever (11) is fitted with two rollers (20A, 20B) which are supported by a core (21) provided with a mounting bore (21B) on an articulated shaft, wherein the rollers (20A, 20B) are both mounted between two webs of a pair of webs which are added to the core (21). The webs (22A, 23B) are on the whole planar. A first web (22A) of each pair of webs is partially engaged in a hollow housing (21C) created on the lateral surface (21D) of the core (21). The second web (23B) of the same pair is maintained at a distance from the first web. The hollow housings (21C) are created on the two opposite lateral surfaces (21D) of the core (21) of the lever (11).

Abstract: A device for actuating binding and tension warp yarns, with at least one first shed forming device for actuating the tension warp yarns, and at least one second shed forming device for actuating the binding warp yarns. The first or the second shed forming devices are provided with a central drive to actuate the respective yarns. A pile weaving machine is provided with such a device.

Abstract: A device for modulating a first rotational motion of an input shaft (2) to a second, different from the first, rotational motion of an output shaft (3)in textile machines has a fixed complementary cam (1) provided with at least two cam profiles (1 a, 1b). At least one cam follower (5) is linked to the input and the output shafts (2, 3) and is provided with at least two contact rollers (6a, 6b), each following a different cam profile (1a, 1b), because of which the cam followers (5)are performing a rocking motion. The cam profiles (1a, 1b)arc internal cam profiles.

Abstract: A cam motion machine that includes several cams each defining at least one running track for a follower roller. Each cam is provided with a centering bore that permits mounting of the cam on a drive shaft, while elements are provided to apply a tightening force parallel to the drive shaft with a non-circular section. At least one washer-spacer, for which an internal edge is non-circular and designed to enable an axial displacement of the washer-spacer along the shaft, is fixed to rotate with the shaft and is in contact with at least one of the cams. The washer-spacer may be fixed to the cam by adherence and to the shaft by cooperation of shapes due to complementary projections provided on one of the shaft and the washer-spacer. It would be appreciate if the Examiner would indicate the acceptance of this amendment to the Abstract in the next office communication.

Abstract: A method for producing a fabric, by a loom equipped with healds, a reed and a back roller, characterized by using synthetic filament yarns as the warp yarns and the weft yarns to be supplied to the loom, using a drive system having a cam for the shedding and closing motions of the healds, and keeping the dwell angle of the healds in a range from 85 to 120 degrees. The back roller is equipped with a positive easing mechanism, and the easing quantity by the easing mechanism is adjusted in a range from about 5 to about 15 mm. Where the warp yarns positioned in the selvages of the fabric among the warp yarns are called selvage yarns and the warp yarns additionally added to the selvage yarns are called insert yarns, then the number of insert yarns per 10 selvage yarns is in a range of from 1 to 10, and one selvage yarn each and one insert yarn each are guided through each dent of the reed.

Abstract: A modulator mechanism for a rotary dobby, the input side of the modulator mechanism being connected to a drive which rotates at an essentially constant angular velocity and the output side thereof providing an output which is applied to a main shaft controlling heald shafts and which is temporally modulated inch a way that a delay of the movements of the heald shafts their maximum displacement positions is caused. To permit a sufficiently large shed rest angle for aft insertion in the case of fabrics having a very large width, a substantially enlarged shed rest angle is provided by a rotatable cam body, which is connected to the drive, and by at least one cam body follower in the form of an articulated lever, which, when the cam body rotates, carries out an oscillating pivoting movement modulated in accordance with the cam shape of the cam body, the pivoting movement being transmitted to the main shaft.

Abstract: A loom equipped with a leveling motion incorporated with a cam-operated type shedding motion. The loom is provided with a control unit to control a variety of operations of the loom. Upon stopping of the loom weaving operation in response to a loom stop signal, the control unit judges that a loom stop time required for recovering a failed condition is longer or shorter than a predetermined time in accordance with the type of the loom stop signal which is different depending upon the cause for which the loom weaving operation is stopped. If the result of the judgement is that the loom stop time is longer than the predetermined time, the leveling motion is operated to level warp yarns at the level near a warp line, thereby loosening the tension applied to the warp yarns.

Abstract: In a weaving machine with a cam mechanism for forming the shed a heddle frame levelling apparatus includes rocking levers which are pivoted about a pin which is urged against a fixed bearing surface on the frame of the machine during weaving by elastically deformable elements. In a first embodiment the movement of the pivot pin is effected by the rotation of an eccentric bearing whereas in a second embodiment this movement is caused by a jack.

Abstract: A mechanism for controlling the reciprocating movement of knives associated with rocking hooks connected to the heddle frames of a weaving machine which mechanism includes a pair of rotatable drums oriented parallel to the path of movement of the knives. Each drum includes two profiled grooves in the surface thereof in which tracking members associated with the knives are cooperatively guided.

Abstract: A weaving method makes use of a set of weaving frames arranged such that, in each weaving cycle, some of the weaving frames are held in an identical extreme position, while all remaining weaving frames are moved in order to provide different tensions for the top and bottom warp threads at the moment of beating up. The shed is formed so that at the moment of crossing, as the weaving frames change position, the length of the course followed by the crossing warp threads is equal or almost equal to the length of the course followed by the warp threads held in the extreme position.

Abstract: A positive eccentric dobby having a rigidly mounted roller lever shaft with minimal clearance, on which pivoted roller levers are disposed, which transmit the movement to the heald frames via coupled connecting rods, reversing levers and rods. A camshaft with eccentrically disposed cam discs is rigidly mounted on a displaceable carriage. In the state where there is a clearance between the rollers and the cam discs, one or more stops swivel the roller levers so that the heald shafts can be coordinated in several preset positions. When there is no clearance between rollers and cam discs, a jamming block having a motorized driving device fixes the position of the carriage with a stop.

Abstract: Drive system for the knife grids of a double-lift open-shed Jacquard machine, which is mounted entirely above the Jacquard machine, and which comprises a central drive shaft which at both ends drives a set of conjugate cams which imparts motion to two follower levers which lie diametrically opposite each other. These follower levers carry out a to and fro pivoting movement in opposite phase to each other, about a transverse axis of symmetry, in between their arms. With each pair of follower levers two knife suspension bars are connected to said arms by means of drive rods in such a way that they move up and down in vertical, parallel planes in opposite phase to each other. A number of knives are suspended in the weft direction on every two knife suspension bars moving in phase, which are situated on either side of the machine in the warp direction. The lift and the inclination of the knife suspension bars are adjustable.

Abstract: A loom for fabrics which are sensitive to loom stopping marks, especially twill fabrics, has a disengagement lever (14) on an eccentric drive mechanism of the loom. The disengagement lever is operated by a controlled driving device, so that it causes all heald frames or shafts of the loom to assume a central shed position when the loom is stopped. Thus, stoppage marks in the fabric are avoided since the heald frames no longer stretch the warp threads during a loom stoppage since the frames are moved to a closed shed position during stoppage.

Abstract: A device for driving harnesses of weaving machines includes at least two driven cam shafts and at least one pair of conjugated cams connected to each other for each shaft. Swivel mounted levers which swivel about a common shaft are mounted alternately and in an opposite sense in relation to adjacent levers, each lever including two cam followers which operate with one of the conjugated cam pairs to provide a positive cam drive for the lever so that the lever oscillates. A transmission converts the oscillating motion of the levers into an up and down of the harnesses.

Abstract: In a loom shedding motion device, the pivoting motion of cam follower levers driven by cams is transmitted by way of thrust rods, bent levers to the leaves of the loom. Extending from a central bearing of each lever are arms on the motion input side of the lever and the motion output side of the lever. The arms are cranked or offset relatively to a bearing lug of the bent lever so that pivot points or arrangements at the ends of the arms and a center bearing are disposed substantially on a straight line, so that, because of the transmission forces in the shedding motion, the pivot experience torques which are operative around the bearing center and whose resultant is disposed vectorially on the bearing axis. The bent levers are therefore supported on the spindle or bearing shaft without tilting, so that the operation is free from wear and little lubricant is needed.

Abstract: Levers with double roller assemblies for positive cam mechanisms for controlling the heddle frames of weaving looms wherein each roller assembly comprises a rotating ring supported on a plurality of roller bearings retained relative thereto on a fixed support mounted to or on extension of the levers. The rings and supports are thus capable of penetrating between the cams of the weaving loom without modifying the axial dimensions of an assembly of such cams.

Abstract: A positive harness drive mechanism raises and lowers the harnesses of a weaving loom responsive to a control cam that engages the followers of a pair of actuators at all times, regardless of the stroke direction, resulting in a smoother, more controlled stroke than is available in previous devices. The cam utilized herein is a double-landed or split cam mounted on the cam shaft by a pair of clamping collars. The actuators are adjustably connected to a pair of corresponding treadles that in turn lift and lower corresponding harnesses.

Abstract: A single heddle control device having a selecting device containing lifters which are actuated by knives of a knife device. The knife device is connected in a drive arrangement with a shaft drive of a weaving machine and the selecting device has coupling means which are formed from the lifters and electromagnetically actuated control projections. The coupling means arrest the lifters in a starting position which corresponds to the stroke position which opposes a pretensioning force of the single heddles. The electromagnets of the selecting device are connected with an electronic pattern control apparatus.

Abstract: A heald control system for a multi-phase or travelling wave shedding loom in which each heald is upperly connected elastically, by way of an elastic traction element, to a single support plate which is removably locked to the fixed part of the loom, and the healds of each section are lowerly locked to a single connection block which is connected by a spring catch connector to a flexible element, which is itself connected to the end of a cam-controlled operating lever.

Abstract: The invention relates to a levelling device for weaving mechanisms incorporating cams of the negative type. With each oscillating lever there is associated a tipping pawl adapted, under the effect of a control member common to all the pawls, to bear yieldably against the edge of the lever in question and to cooperate with a retaining stop formed thereon. Under these conditions, it is the weaving mechanism itself which furnishes the effort of levelling the heddle frames.

Abstract: A device for shedding warp yarns in a weaving loom, such as a jet loom, comprises: cranks supported on machine frames of the loom rotatable in synchronization with the weaving operation of the loom; synchronizing levers swingably pivoted; connecting rods connecting the cranks with synchronizing levers so that the rotational movement of the cranks is transmitted as a swinging motion of the synchronizing levers; synchronizing links linked with the synchronizing levers; rocking levers linked with the synchronizing links so that the rotational movement of the cranks is transmitted as a swinging motion of the rocking levers through the swinging motion of the synchronizing levers; and heddle frames, for the upper and lower warp yarns, operated by the rocking levers.

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: A loom mechanism and method which delays the harness crossing and provides tighter, more uniform beat-up during the weaving process.

Abstract: A patterning device employs an elongated strip which is fixed between an operating element, such as a guide bar of a warp knitting machine, and a fixed support point. In addition, the patterning device has a displacing element in the form of a rotatable eccentric or a reciprocally mounted roller which is used to deflect the strip between two points intermediately of the length of the strip so as to exert a pulling force on the guide bar. The amount of deflection of the strip determines the amount of movement of the guide bar. The guide bar can be returned by way of a spring or by a second strip which is deflected in similar manner as the first strip by a displacing element. In one embodiment, a single displacing element is used for deflecting purposes while in other embodiments, a multiplicity of displacing elements are used. The strips may be attached directly to the guide bar or indirectly, for example, over a pivotally mounted lever.

Abstract: In a shed-forming device for a loom which simultaneously weaves a number of fabric lengths and in which heald-moving cams are arranged along a helical path, the improvement of providing couples of matched levers which are not bound to each other, and wherein one lever is controlled by a cam and the other lever is controlled by a spring, so that said levers are kept in a contrasting or opposing relationship by the control mechanisms.

Abstract: The eccentric mechanism includes deflecting levers which are rotatably mounted on a fixed spindle and which bear against bearing elements in order to preclude an accumulation of tilting forces along the line of the levers. Each bearing element has a disc-shaped portion located between two levers and cooperates with a bushing, separate or integral, or a shaft portion to mount a lever.

Abstract: The eccentric drive for moving the heddle frames between a top shed position and a bottom shed position is constructed to form symmetrical sheds not only for large frame movements but also for small frame movements. In one embodiment, the link between the cam-actuated lever and the deflecting lever is pivoted on the deflecting lever and secured to one of a plurality of positions on the cam-actuated lever. These positions are located on a curved line which has a center of curvature located away from the axis on which the link is mounted on the deflecting lever. These positions are formed by a toothing, a row of apertures or an elongated slot.

Abstract: The eccentric drive for lifting the heddle frame uses a mounting arrangement by which cam rollers can be detachably mounted on a cam-follower lever. The mounting arrangement uses a roller journal which is secured by bolts to the lever and which serves as a mount for a roller. The diameter of the journal surface on which the roller rotates is relatively large to provide a low surface pressure of the roller on the journal.

Abstract: A web weaving machine is disclosed. The machine comprises a plurality of heald shafts disposed to have a plane of symmetry common to one another and a plurality of tension transmitting elements. At least one of the elements is flexible and is guided by at least one roller. Each tension transmitting element is connected to a respective heald shaft at a portion thereof which is disposed in the plane of symmetry and each element is so disposed as, in use, to transmit a force to the respective heald shaft which is directed substantially parallel to the healds thereof.

Abstract: This dobby shedding motion for power looms comprises essentially a series of twin cams mounted on a common drive shaft and oscillating arms each provided with a pair of roller followers adapted to co-operate with said cams. Each cam assembly comprises a pair of parallel discs slightly spaced in the axial direction and off-set angularly to each other, and each oscillating arm carries two pairs of strap-forming strips rotatably supporting a roller follower, each roller follower being adapted to engage one of the discs of the registering cam assembly. Said strips have extensions bent to provide inner surfaces adapted to engage the side surfaces of said discs to assist in centering the roller followers in relation to said discs. The cam assemblies and roller followers are mounted and assembled by means of bolts comprising each a frustoconical headed screw and a nut also formed with a frustoconical portion whereby tightening said bolts in properly countersunk holes will provide a reliable vibration proof assembly.