Abstract: A bottom tenser utilized for a drafting means of a spinning frame, especially for fasciated yarn spinning, in which a fiber bundle is attenuated at a high speed exceeding 100 m/min. The bottom tenser as well as a bottom roller corresponding to the tenser is provided with a free end through which an apron is easily removable from and mountable on the tenser and the roller. The tenser may be constituted by a body and at least a guide wall movable relative to the body. The guide wall prevents lateral movement of the apron in its operative position and, in turn, is displaced or removed from the body in its non-operative position so as not to obstruct an apron exchanging operation.

Abstract: A novel weighting device for draft rollers, in which a diaphragm is provided, as a pressing unit, above each top side roller. The diaphragms provided on a spinning frame are classified into a plurality of groups corresponding to species of rollers such as front rollers, middle rollers, and back rollers. Each group of diaphragms has common piping having a regulator for air pressure and branched to the diaphragms belonging to the group. One end of the piping is connected to a common high pressure air source, from which air of a uniform pressure controlled by the regulator is supplied to the diaphragms belonging to the group. Since a weighting force onto a top side roller is a function of a air pressure supplied to the diaphragm, it can be changed or diminished at once in a centralized manner by adjusting the regulator. Therefore, troublesome adjustment of individual pressing units is unnecessary.

Abstract: In the piecing operation, the broken ends of a yarn and a fiber bundle are sucked into a suction nozzle, and therein are entangled due to twists imparted to the fiber bundle by first vortices utilized for forming a fasciated yarn. The broken end of the yarn may be twisted in reverse of the fiber bundle by second vortices. Further, third vortices weaker than the first vortices may be used instead of the first vortices. The apparatus comprises jets for generating the second and third vortices and piping for transporting air to the jets and from the suction nozzle, as well as a control circuit thereof.

Abstract: A textile fiber drafting apparatus is disclosed, according to which the drafting bottom rollers in each line along the spinning units of a spinning frame are arranged in such a way that each two adjacently juxtaposed bottom rollers make a single block for each two spinning units, so that each bottom roller has an open, free end through which an apron may be replaced with a new one or fibers entangled on the roller may be removed with extreme ease. Between each such two spinning units is provided an arrangement for driving the bottom rollers thus disposed, including driving and driven mechanisms.

Abstract: A drafting arrangement including a collector means suitably utilized for fasciated yarn spinning. The collector means in the shape of a hollow shell is disposed between a preceding draft means such as a pair of front rollers and the post draft means such as a pair of a aprons, in such a manner that a front surface of the collector means confronts a rearward surface of the preceding draft means and, on the other hand, a rear surface of the collector means confronts a front surface of the post draft means with a predetermined clearance. By this construction, a concomitant air stream accompanying rotation of the draft means is effectively expelled out of the fiber passage and stable drafting can be accomplished.

Abstract: A novel fiber drafting system is disclosed, according to which fibers of sliver supplied continuously are passed through a first pair of rotatable cooperating rollers while being pressed and compacted into a reduced section by and between a space formed by a groove and a projection formed respectively in and on the circumferential peripheries of the rollers of said first pair. The sliver thus compacted is then transferred to and held by and between a second pair of rollers rotated at a higher peripheral speed than the first pair of rollers, whereby the fibers of sliver are drafted successively between the two pairs of rollers without use of conventional aprons for guiding and supporting the fibers in the drafting zone.

Abstract: A fiber strand delivered to a draft zone between a pair of back rollers and a pair of front rollers is introduced into a passage formed through a fiber strand guide device. On the way of the passage, floating fibers contained in the fiber strand are controlled by means of a fluid stream jetted to a back surface of the fiber strand to press the fiber strand onto an inner wall of the passage as well as forward it towards the front rollers. A pressing plate may be cooperatively utilized with the fluid stream. Accordingly regular drafting is attained.

Abstract: A false-twist nozzle with an improved structure is provided herein. The false-twist nozzle according to the invention comprises a housing having a large-diameter yarn passage portion and an insert member having a small-diameter yarn passage portion and a fluid conduit hole. When the insert member is within the housing, a complete yarn passage hole is formed through the nozzle. Because the insert member is separable from the housing, drilling of the very small diameter fluid conduit hole can be made easily and accurately prior to insertion within the housing. Furthermore, the fluid conduit opening is disposed both annularly and angularly in the downstream direction with respect to the yarn passage hole, thereby increasing the twisting action induced by the flow of jetted fluid while preventing damage to the yarn.

Abstract: A spinning apparatus for a fasciated yarn is provided which comprises a fiber-opening means provided with a combing roller, a fiber-collecting means including an inlet member and a rotor, a twist-imparting means consisting of an air nozzle, and a yarn take-up means. A sliver opened by the combing roller is fed to the interior of the rotor through the inlet member. Since the rotor and the inlet member rotate reversely to each other, the fibers are evenly distributed on an inner surface of the rotor. An intermediate yarn drawn out from the rotor is supplied to the air nozzle under an overfeeding condition, whereby a good fasciating effect is imparted to the resultant yarn by a vortex. Prior to feeding the yarn to the air nozzle, the yarn may be drafted between two pairs of rollers. The apparatus is easy to maintain because a roller drafting means having an apron which rapidly wears due to high-speed processing is not utilized.

Abstract: A method and apparatus for spinning a modified fasciated yarn at a high production rate featuring a combination of open-end spinning and fasciated yarn spinning. A sliver is opened by a combing roller and deposited as a fiber layer on a fiber collecting surface of a drum rotor rotating at a high speed. Thereafter, the fiber layer is drawn off from the fiber collecting surface as a continuous fiber bundle by a central rotor rotating coaxially with the drum rotor at a faster speed. During the drawing-off operation, the fiber bundle is flattened to a ribbon form by making contact to a deflector and is subjected to a vortex within an air twisting nozzle mounted on the central rotor to form a resultant yarn. According to the present invention, high production rate can be obtained because a roller drafting system having aprons can be omitted.

Abstract: An air nozzle, suitable for producing a fasciated yarn, having at least one jet in each of narrow and wide passages along the traveling direction of the fiber bundle. Each jet is directed to generate a vortex whirling reversely from that of the other passage. The twist imparted to the fiber bundle by the vortex generated in the wide passage is restrained by the vortex whirling reversely thereto in the narrow passage. As a result, circumferential fibers of the fiber bundle are less twisted relative to the core portion thereof. During the untwisting operation of the vortex of the wide passage, the circumferential fibers are entangled around the core portion with a twist corresponding to the difference from the core portion, thereby obtaining a well-fasciated yarn.

Abstract: A magnetic recording medium having a metamorphosed layer on the surface of the magnetic layer of conventional magnetic recording media, said metamorphosed layer being derived from some of a binder component included in the magnetic layer, can prevent the sticking trouble taking place between the magnetic recording medium and the magnetic head. Said metamorphosed layer can be formed by irradiation with ultraviolet rays in the course of the production of magnetic recording media at the step of coating a dispersion of magnetic particles on a flexible support or after the coating step. Said metamorphosed layer can also be formed on the surface of once produced magnetic recording media irrespective of having caused the sticking trouble by irradiation with ultraviolet rays. Suitable apparatuses for producing such improved magnetic recording media are also provided.

Abstract: An apparatus for automatically changing cans of a spinning machine, such as a drawing frame or a carding machine. The apparatus comprises: a movable support frame which can be reciprocated along the can transporting direction; and a plurality of can transporting arms which are substantially equidistantly arranged on the support frame and which can alternately be located at operating positions where the arms transport the cans and stand-by positions where the arms do not interfere with the cans, whereby, when the movable support frame is moved forward, the can transporting arms are maintained at the operating positions so as to transport the cans, and then, after the can transporting arms are returned to their stand-by positions from their operating positions, the support frame is moved backward.

Abstract: A magnetic recording medium having a metamorphosed layer on the surface of the magnetic layer of conventional magnetic recording media, said metamorphosed layer being derived from some of a binder component included in the magnetic layer, can prevent the sticking trouble taking place between the magnetic recording medium and the magnetic head. Said metamorphosed layer can be formed by irradiation with ultraviolet rays in the course of the production of magnetic recording media at the step of coating a dispersion of magnetic particles on a flexible support or after the coating step. Said metamorphosed layer can also be formed on the surface of once produced magnetic recording media irrespective of having caused the sticking trouble by irradiation with ultraviolet rays. Suitable apparatuses for producing such improved magnetic recording media are also provided.

Abstract: The gas-developing chewing gum of the invention is prepared by granulating carbonate or bicarbonate salt together with sodium sulfate or anhydrous sodium sulfate and at least one of sugars, polyphosphates and organic acid salts and dispersing sugar, fruit powder, fruit acid (organic acid) and flavoring ingredient throughout the resulting granules to form the gas-developing composition, which is then coated with or filled into the chewing gum.

Abstract: The end of an auto-loading magnetic tape for a computer magnetic tape device is formed in a loop with the magnetized side thereof bent to face outwardly. The length of the bent portion is equivalent to between half and twice the square root value of the product of the radius of a file reel and the spare radial length of the reel radius. The loop is so constructed that the extreme end of the magnetic tape is bonded to the base side of the magnetic tape. The end of the magnetic tape thus offers higher air resistance than the other parts of the tape to the air flow in the cartridge containing the magnetic tape, thereby enhancing the chance of success in a tape auto-loading operation.

Abstract: A pressure roller is generally disposed between the yarn discharge portion of a spinning unit and a yarn oscillating device of a winding unit in a spinning unit. The pressure roller is in contact with a drive roller to form a nip therebetween and is formed with a notch provided in one end edge of the pressure roller to transport the yarn into the nip. The notch intersects the end face of the pressure roller at boundary lines extending from the end edge thereof inwardly.

Abstract: The disclosed doffing apparatus is for use in a spinning machine including a mechanism for winding a yarn in the form of a cheese or package, a device for cutting the yarn fed to the winding mechanism when the cheese becomes full and an air suction device for sucking the cut yarn which is continuously fed even after cutting. This doffing apparatus comprises an operation member which is movably positioned in the vicinity of the air suction device and cutting device so that the operation member is operatively interconnected to the air suction device and cutting device, and opening of the air suction device and operation of the cutting device are performed by the movement of the operation member. In this doffing apparatus, release of a full cheese from the winding mechanism also can be performed by this operation member.

Abstract: A system for transporting cheeses produced by one spinning machinery into a container located in a predetermined position near the end of the spinning machinery is disclosed. The system comprises a first conveyer extending along the major length of the spinning machinery to receive the doffed cheeses thereon directly from the spinning machinery, and a second conveyor extending between the end of the first conveyer and the container to receive and transport the cheeses from the first conveyer to the container. The second conveyer is driven at a higher speed than the first conveyer to allow the cheeses to be automatically contained in the container which has an inner diameter slightly larger than an outer diameter of the cheese in a manner which allows the bobbins of the cheeses to be stacked in end-to-end relationship.

Abstract: Disclosed is an open-end spinning machine and a method of stopping the same.