Abstract: The winding machine is provided with a tension control means which is adjustable to vary the contact length over which a filament slides on a guide roller before being wound onto a mandrel. The guide roller and associated cam drum can be adjusted simultaneously via end plates which can be adjusted in templates fixed to the machine frame.

Abstract: A device that permits the rapid removal of fiber glass roving from a coil thereof, for movement of the roving to a chopping and spraying gun, wherein the device provides considerable drag to the roving when it is no longer pulled firmly. The device includes a tube that is pivotally mounted on a support, so that the tube can pivot to best align itself with roving moving, therethrough, and then can pivot away from that orientation to cause the roving to undergo sharper bends in passing into and out of the tube, so as to apply braking forces to the roving. The support for the tube can include a pair of rods that fit closely within the corners of a standard roving box, and can also include clamps on the rods that clamp to the box, for facilitating mounting of the tube.

Abstract: A sewing machine thread snubber having a fixed part and having a movable part pivoted thereon is provided with mechanism operable by needle bar reciprocating mechanism for moving the pivoted part of the snubber between a needle thread releasing position and a position wherein a drag is imposed on the thread.

Abstract: A device for guiding yarn as it is wound on a package from a source at a constant speed. The yarn passes over a yarn guide member which is supported on a holder. The holder is resiliently supported transversely to the direction of the yarn travel through the guide member for compensating for changes of the yarn tension during winding of the yarn onto the package.

Abstract: A tensioning device is illustrated wherein a plurality of longitudinally aligned upright receptacles carry stacked rollers the lowermost of which is driven by the passage of yarn thereunder. A vertical yarn passageway is carried in at least one end of the housing forming an end receptacle to permit a change of direction in the yarn to cause up and down roller movement to compensate for changes in tension in the yarn as well as alternate yarn paths. Passageways are provided in the housing adjacent the pairs of rollers so as to permit expulsion of lint from the receptacles which is promoted by turning of the rolls. Magnetic means may be carried beneath the device for varying the force exerted by the rollers on the strand and the magnetic means may be varied for this purpose. Detector means such as photo-electric devices may be utilized for detecting variation in the turning of the rollers to act as a stop motion for the machine utilizing the tensioning device.

Abstract: A tension compensator for use on a package winder has two spaced pins projecting from a rotatable member, the pins being parallel to the axis. The member is biased to rotate in a predetermined direction to a stop, so that a strand passed between and over said pins in zig-zag fashion moves the pins against the bias to straighten the strand under higher tension and permits the bias to move the pins to store the strand under lower tension. The compensator is made self-threading by providing a ramp to deflect the strand over the end of one pin when traversing past the pin in one direction, and a strand-guide to deflect the strand over the extremities of both pins and the ramp on the initial traversal of the strand in the opposite direction.

Abstract: A ball tension device for horizontal yarn comprising generally a body defining a vertical channel within which one or more balls can be positioned to vary yarn tension. A pair of horizontally aligned openings communicate with the bottom of the channel to provide for yarn inlet and outlet as the yarn passes through the device. Similar, ceramic inserts line the inlet and outlet openings and are angularly downwardly inclined to define a pair of opposed, angularly inclined conduits through which the yarn horizontally passes in the tensioning procedure.

Abstract: A yarn is twisted by passing the yarn wound on a package to a tensioning zone and then passing the yarn to a 2-for-1 twist spindle and twisting the yarn. The tension applied to the yarn in the tensioning zone is the result of the sinusoidal path of the yarn through the tension zone and is a function of the amplitude of the yarn passing through the sinusoidal path.

Abstract: A device for equalizing movements in packing machines, especially machines for making bags, which is arranged between a first continuously working withdrawing device for foil-shaped packing material and a second intermittently working second withdrawing device. The device comprises a spring-urged pivotable lever and a stationary support each carrying a plurality of rotatable journalled guiding rollers arranged one behind the other and in spaced relationship to each other. The packing material is looped alternately over one guiding roller on the pivotable lever and a guiding roller on the stationary support and in this manner successively over all guiding rollers in a progressive way, the distance between each two adjacent guiding rollers of the pivotable lever varying in length.

Abstract: A portable exercising apparatus for a supine user has an open ended inwardly tapered member with a block member inside, the position of which is adjustable. The block member has a channel which provides a passage for a pair of ropes frictionably engageable between the tapered and block members which frictional engagement is variable because the position of the block member is adjustable. The ends of the ropes emerging from one end of the channel, out of the tapered member, each have a hand grip, while the other ends of the pairs of ropes are joined to form a pair of loops slidably engaged in a tube which provides for adjustment of the length of the loops. A pair of bands are slidably secured to both loops by a sleeve, these bands providing containment for the feet of the user. Preferably the tapered member is made of a material having a high heat conductivity and the block member of a material having low heat conductivity this minimises the temperature rise due to friction.

Abstract: An apparatus for controlling the electrical resistance in a moving electrical conductor during its production. The apparatus including means for conducting a current along a predetermined constant length of the thermally cured conductor, means for measuring the voltage across the predetermined length, means for comparing the voltage drop with the desired voltage drop and means for varying the extent of thermal curing of the conductor when the voltage drop measured varies from that desired. There is also provided a tension control device for the conductor in the apparatus.

Abstract: Apparatus for packaging roving from a plurality of continuous glass strands. The apparatus comprising means for tensioning the roving along its path to the collector including a first and a second bar in spaced relation located at opposite sides of the path and upon which the roving is turned during its travel to the collector. The apparatus also having means to movably hold one of the bars and to control the movement and position of the bar so that the tension in the roving can be varied and controlled as the roving is wound on the collector.

Abstract: Yarn tensioning apparatus particularly suitable for receiving essentially tensionless yarn and giving it a generally uniform output tension level includes friction surfaces across which the yarn is drawn to progressively raise the tension level and work out tangles. The tension surfaces are long, so that, in passing transversely over them, the yarn may take a variety of paths to accommodate the abrupt fluctuations associated with tangle release events. Near the output, a member having a friction nose at one end is pivoted at its opposite end and includes a curved intermediate portion that may swing down to contact a yarn engaging portion of a friction pin; the arrangement being such that an increase in yarn tension causes movement of the member relative to the pin in a direction to produce tension-reducing effects, and vice versa.

Abstract: A yarn tension control device for controlling the tension of yarn being longitudinally advanced having two movable yarn guide members with spaced guide pins alternately engaged by the longitudinally travelling yarn. One of the yarn guide members is pivotally mounted to move its guide pins across the yarn path and has a pin or roller mounted spaced from its pivot and is balanced by a balancing weight. A pivotally mounted control cam has a balancing weight and a laterally extending arm with a biasing weight adjustably positioned on the arm. The control cam has a cam profile in contact with the pin or roller on the first yarn guide member and the biasing weight biases this profile into engagement with the roller or pin to pivot the first yarn guide member in a desired direction. The portion of the arcuate cam profile nearest its pivot is concave, a middle portion thereof is nearly straight, and the portion of the cam profile furthest from the control cam pivot is convex.