Abstract: A fiber bundle guide 1 includes a cylindrical guide roller 11, a support member 12 which rotatably supports the guide roller 11, and a movable mechanical section 13 arranged between the guide roller 11 and the support member 12, so that the guide roller 11 swings in response to widthwise changes in the traveling path of the fiber bundle Y. According to this fiber bundle guide, it is possible to prevent excessive shifting of the fiber bundle Y toward one of both sides of the circumferential edge of the guider roller 11, preventing shrinking or bending of the fiber bundle Y due to the contact of the fiber bundle Y to the flange 112 of the guide roller 11, which makes it possible to guide the fiber bundle Y without causing twisting of the bundle.

Abstract: A fiber bundle guide 1 includes a cylindrical guide roller 11, a support member 12 which rotatably supports the guide roller 11, and a movable mechanical section 13 arranged between the guide roller 11 and the support member 12, so that the guide roller 11 swings in response to widthwise changes in the traveling path of the fiber bundle Y. According to this fiber bundle guide, it is possible to prevent excessive shifting of the fiber bundle Y toward one of both sides of the circumferential edge of the guider roller 11, preventing shrinking or bending of the fiber bundle Y due to the contact of the fiber bundle Y to the flange 112 of the guide roller 11, which makes it possible to guide the fiber bundle Y without causing twisting of the bundle.

Abstract: A yarn tension control device of an automatic winder which includes a variably controlled tensioning device for each of a multitude of spindles of a winding unit; a tension detecting device for specific one of the multitude of spindles; and control devices for controlling the tensioning device for the specific spindle by the tension detecting device and for controlling the tensioning device for other multitude of spindles on the basis of an output value to the tensioning device for this specific spindle.

Abstract: An unwinding assisting device for an automatic winder. The automatic winder has a winding position at which a cop of yarn is unwound from a take-up tube supported on a tray. A lifting mechanism raises the tray at the winding position as the cop of yarn is unwound from the take-up tube. A tubular member receives the take-up tube therein. The tubular member has an inside diameter that is smaller than the outside diameter of the cop and larger than the outside diameter of the take-up tube.

Abstract: A yarn unwinding assisting device for an automatic winder comprising a first defining member having an inner diameter defining portion covered over a yarn feed bobbin to define a lower balloon, and a second defining member having a defining member located above the yarn feed bobbin to define a yarn running area and defining an upper balloon, wherein said first defining member is separated from said second defining member to enable following the unwinding of the yarn feed bobbin.

Abstract: A cop changing mechanism for a winding unit, for transferring a tray supporting a cop in an upright position from a waiting position to a winding position and removing a tray supporting an empty bobbin away from the winding position is provided with a tray holder for pressing down the tray located at the winding position.

Abstract: A false twist processing apparatus for applying a predetermined processing to chemical fiber filament yarns supplied from a yarn supply device by passing it through treating devices such as a yarn feed device provided on a frame, a heater, a false twisting member, a take-up device, and the like, wherein the frame is composed of at least two support columns which are independent from each other and stood upright on a floor surface, and the treating devices are mounted on the support columns so that a yarn processing route is formed between the two support columns.

Abstract: A method for quality control of yarn for false twisters having a plurality of take-up motions, consisting of conducting quality measurement of yarn upon doffing by the take-up motions at a first point where the yarn is being twisted and at a second point where the yarn is being untwisted to provide readings of quality measurement by means of a quality measuring device.

Abstract: Apparatus for the effective manufacturing of bulk yarn employing fluid and comprising two assembled blocks of simple geometric form. The apparatus is characterized by a yarn path part having a polygonal cross section which is defined by planes arranged in the yarn-travelling direction. A part of the yarn path part, however, is provided with a fluid-jetting opening and is constructed with a different cross-section. That part, the yarn-treating section, is defined by curved faces and planes having a cross-section larger than that of the polygonal cross-section of the yarn path part. The bottom part of the yarn treating section has a curved face with said fluid-jetting opening therein, a separate covering part encloses the yarn path part to tunnel-like member.

Abstract: A method of and apparatus for manufacturing a textured yarn. The method comprises introducing plural yarns simultaneously in a state out of contact with each other into a belt type false twister including two crossing endless belts travelling in directions from each other and then exerting a compressed fluid on the plural yarns to partially intertwine the yarns. The intertwined yarns are wound up as a single textured yarn.

Abstract: In a nip type false twisting apparatus for false twisting a yarn nipped between two endless belts intersecting each other and running in the opposite directions, the belt is formed of a relatively soft material which is selected to have resilient elasticity in a determined range and is used under the low contact pressure.

Abstract: An improved method and apparatus for winding a yarn on a package are disclosed. The apparatus comprises the package supported on a pair of cradle arms and driven by a friction roller, with a traverse guide disposed between a traverse drum and a cam plate so as to reciprocatingly traverse the yarn from one end of the package to the other. The traverse cam plate is positionally controlled to vary the width of the traverse by an arcuate cam, affixed to the cradle arm, acting on a first pivoting lever connected by a rod to the cam plate such that the width of the traverse is decreased as the package size grows. A second cam, affixed to the cradle arm acts on a second lever during an initial winding period to maintain a pivot axis of the first lever in a fixed position.

Abstract: A belt-type false twisting unit of the false twisting apparatus. First and second endless belts are running in directions opposite to each other to nip a yarn therebetween in the portion of intersection so that the yarn is false-twisted. A pressing roller is arranged to press a back surface of one of the belts in the portion of intersection.