Abstract: According to the present invention, a carbon-fiber preform for a carbon-fiber-reinforced plastic is formed from mutually intersecting warp and weft each of which including a carbon-fiber multifilament yarn. At least one of layer surfaces has fluff formed by cutting some of filaments of the carbon-fiber multifilament yarn, and a total fluff length of fluff formed on the warp and a total fluff length of fluff formed on the weft are not equal. The present invention provides a CFRP in which the delamination strength (interlaminar shear strength) is improved and that has a high strength.

Abstract: To provide a spindle device and a machining center, in which spindle replacement can be carried out in an extremely short time, downtime during maintenance is short, and productivity is high. In a spindle device 20, there are provided wirings 41, 42 extended from a spindle 30 and wired to support arms via a bracket 21, and joint components 74, each provided at a position a predetermined length extended from extended parts for the wirings 41, 42, are accommodated within the bracket 21.

Abstract: To provide a spindle device and a machining center, in which spindle replacement can be carried out in an extremely short time, downtime during maintenance is short, and productivity is high. In a spindle device 20, there are provided wirings 41, 42 extended from a spindle 30 and wired to support arms via a bracket 21, and joint components 74, each provided at a position a predetermined length extended from extended parts for the wirings 41, 42, are accommodated within the bracket 21.

Abstract: A warp tension control apparatus includes a tension detector for detecting the tension of a warp and an operation mode controller for generating a control signal to drive a motor so as to minimize the deviation between the detected tension and a normal target tension. A long period stop mode controller is included for controlling the tension so that a target slack tension is set to be less than the normal target tension when a loom stop signal has been issued. A selector switch is provided for selectively switching to a contact connected to an output of the long period stop mode controller before entering a long unmanned operating period of the loom, the switch being disposed in a circuit between an input terminal of the long period stop mode controller which receives a loom stop signal and a warp tension slack device.

Abstract: A positive feed picking device for a fluid jet loom includes a yarn measuring and storing device; a main picking nozzle; a positive feed mechanism including a drive roller and a motor for driving the drive roller. The positive feed mechanism is disposed between the yarn measuring and storing device and the main picking nozzle to feed a weft yarn positively to the main picking nozzle during a picking period. The feed picking device also includes a sensor disposed on a yarn path along which the weft yarn travels for detecting the delivery of a predetermined length of the weft yarn from the yarn measuring and storing device. A motor controller for controlling the operating speed of the motor of the positive feed mechanism, and a controller for controlling the positive feed mechanism are also included in the positive feed picking device. The controller starts the positive feed mechanism at the start of picking period.

Abstract: A warp mending device draws a mending yarn unwound from a bobbin to a slot of a drop wire and a mail of a heddle corresponding to a trailing edge and a leading edge of a broken warp so that a loom is started. A positioning device is incorporated in the warp mending device for positioning drawing means relative to the mail of the heddle corresponding to the broken warp in a predetermined positional relationship therebetween when the warp is broken. The warp mending device includes: a yarn guide having a yarn guide line therein for guiding the mending yarn between the drop wire and the heddle corresponding to the broken warp; a nozzle for generating an air current inside the yarn guide line; a yarn leading device for drawing the mending yarn unwound from a bobbin into a slot of a drop wire or a mail of a heddle, whichever is located upstream of the drawing direction, and for leading the thus drawn mending yarn into an inlet of the yarn guide line.

Abstract: A method of locating a slit between the dents of the reed of a loom corresponding to a broken warp and to an apparatus for positioning a threading device at a position corresponding to the slit between the dents corresponding to the broken warp. The broken warp or a normal warp in a specific vertically displaced relation with the broken warp is detected by a yarn sensor. The position of a slit between the dents corresponding to the broken warp or that of the normal warp is determined on the basis of the distance traveled by the yarn sensor from its standby position, and a threading device is position corresponding to the slit between the dents corresponding to the broken warp on the basis of the distance traveled by the yarn sensor.

Abstract: When a warp is broken during weaving on a loom, the broken warp is mended and restored by a method of restoring a broken warp after mending the same, comprising steps of connecting a mending yarn to the trailing portion of the broken warp to form a mended warp; cutting a normal warp which has been drawn through the same slit between dents as the broken warp is to be drawn through and inserting a mending yarn with a sufficient length between the cut ends of the normal warp, tying the mending yarn connected to the trailing portion of the broken warp to the normal warp drawn through the same slit between the dents as the broken warp is to be drawn through; and pulling the normal warp toward the take-up side so that the mended warp and the normal warp are tightened properly. Thus, the mended warp is drawn through the slit between the dents together with the normal warp.

Abstract: A picking apparatus of a rapier loom has gripping bodies between a weft selection device and a yarn cutter. The gripping bodies are movable up and down. The gripping bodies selectively grip a plurality of weft yarns in accordance with a color pattern. One yarn cutter cuts the weft yarn gripped by the gripping bodies and severs the cut weft yarn from a woven cloth after the weft yarn is picked. Thus, neither catch cords nor an extra length of fringe nor a selvage cutter are needed.

Abstract: A weft insertion apparatus for inserting a weft yarn in a picking direction into a main picking nozzle of a picking apparatus of a loom, which nozzle has at least one individual nozzle, and the loom further having at least one measuring and storing device with a winding yarn guide. The insertion apparatus has an air current generator for generating an air current in the picking direction inside the at least one winding yarn guide, and a yarn suction device disposed at a position offset from the axis of the main picking nozzle and opposite an exit of the winding yarn guide positioned at a predetermined rotary position in the at least one measuring and storing device. It furthermore has a yarn conveying member for engaging a weft yarn extending between the at least one measuring and storing device and the yarn suction device and guiding the weft yarn thus engaged to the inlet end of the at least one individual nozzle of the main picking nozzle.

Abstract: A method and apparatus for automatically mending warp yarn selects broken warp yarns from among a group of the warp yarns at the time of breakage of the warp yarn. The spacings between the reed wires of a reed through which the broken warp yarn is passed or the spacings between the adjoining reed wires are then enlarged. A yarn passing member is then positioned at the reed wires through which the broken warp yarn is passed on the basis of the position of the reed wires having large spacings therebetween. The yarn passing member is then inserted into space of the reed wires through which the broken warp yarn is passed. A mending yarn tied to the broken warp yarn is then passed and guided into corresponding reed wires by the yarn passing member. In such a manner, it is possible to then set the loom to be re-started.

Abstract: An auxiliary nozzle for a loom, such as an air jet loom within a shuttleless loom, jets pressurized gas in order to prevent stall of weft inserted into warp shedding. At least a tip portion of an auxiliary nozzle body is formed of ceramics material having a very small integrally-molded surface roughness of 0.5 .mu.m or less and having characteristics of high toughness and high strength whereby occurrence of flaws in warp can be minimized and woven fabric of high quality can be obtained. Particularly, by employment of particular zirconia-type ceramics, the moldability, processing properties for drilling and wear resistance can be improved.

Abstract: A size viscosity controller for a slasher, for controlling the viscosity of the size circulated within the sizing vat of the slasher. The viscosity of the size is maintained at a desired viscosity by controlling heat supply units on the basis of the deviation of the measured temperature of the size from a desired temperature so that the size is maintained at the desired temperature and, at the same time, regulating the concentration of the size by supplying wet heat, such as steam or hot water, to the size or heating the size by dry heat, such as heat generated by an electric heater, to regulated the concentration of the size.

Abstract: A weft yarn measuring method controls the picking device of a fluid jet loom so as to pick a weft yarn of a predetermined length in each picking cycle. In releasing loops of the weft yarn wound on the storage drum of the picking device, the retaining pin of the picking device is controlled so that only one of the loops of the weft yarn is unwound at each reciprocation of the retaining pin, and the reciprocation of the retaining pin is repeated a plurality of times to unwind accurately a plurality of loops of the weft yarn corresponding to a predetermined length of the weft yarn necessary for one picking cycle.

Abstract: An automatic picking controlling method for automatically controlling the operation of at least the subnozzle groups in a jetting pattern selected on the basis of the actual running mode of a picked weft yarn is arranged such that a plurality of typical jetting patterns respectively corresponding to different running modes of the picked weft yarn for controlling at least the subnozzle groups are initially stored in a storage unit; the running mode of the picked weft yarn is detected in a detection step; a jetting pattern meeting the actual running mode selected from among those stored in the storage unit is read, and the operation of the subnozzle groups is controlled in accordance with the selected jetting pattern for a predetermined period of time.

Abstract: A device for mending and trimming broken warp yarn includes a yarn holder mounted on a moving member for holding a free end of a mending yarn tied to a broken warp yarn. When a warp yarn is broken during the operation of the loom, one end of a mending yarn and the broken end of the broken warp yarn extending from the warp beam are tied together, and the other end of the mending yarn is passed through a corresponding heddle and a corresponding gap between the dents of a reed, and then the loom is restarted. A signaling device generates a signal after detecting the arrival of the free end of the mending yarn which was not woven into the cloth after the loom was restarted. The free end of the mending yarn is cut off automatically from the woven cloth by a cutter in accordance with the signal from the signaling device while the loom is in operation. A controller is connected to and controls all of the elements of the mending and trimming device.

Abstract: A centralized loom control method employing a host computer for controlling the operation of a plurality of looms. Data base including data accumulated by recording past actual weaving conditions in stored in a memory device connected to the host computer. The host computer determines standard set value for which the looms are to be set by processing the specifications of a fabric to be woven entered therein and data fetched from the memory device through predetermined calculation or interpolation. The host computer compares a standard operating speed among the standard set values with a target operating speed at which the loom is to be operated, and changes the standard set values according to the result of comparison to provide new standard set values suitable for operation at the target operating speed.

Abstract: A picking controller capable of automatically controlling the retaining member of the weft yarn measuring and storing unit of a picking device and the modes of operation of subnozzle groups respectively composed of subnozzles detects an actual arrival phase at which a picked weft yarn arrives at a fixed position on the arrival side of the loom, and then compares the actual arrival phase with a reference arrival phase to obtain the angular difference between the actual arrival phase and the reference arrival phase. The controller then determines a picking phase on the basis of the angular difference, and determines a releasing phase at which the retaining member is to be retracted so as to release the weft yarn stored on the measuring and storing drum of the weft yarn measuring and storing unit.

Abstract: A pile warp tension controller for controlling the pile warp yarn tension control mechanism of a pile fabric loom controls the position of the tension roller of the pile warp yarn tension control mechanism or the torque acting on a tension lever supporting the tension roller according to the operating state of the pile fabric loom so that the tension of the pile warp yarns is regulated at an optimum value. The control mode of the pile warp tension controller is changed over from a tension control mode to a speed control mode in forming loops of the pile warp yarns to ensure the satisfactory formation of loops having a predetermined loop length and to prevent defective loops.

Abstract: A new weft yarn is supplied to a predetermined position in case when the weft yarn in a control unit, particularly in a loom, is broken. Conventionally, the supply of the new weft yarn is effected by a weaver. The present invention provides a yarn guide device for positioning, holding, and transferring a yarn to a predetermined position. The yarn in then drawn inside of a guide tube located in a predetermined position, and thereafter the yarn is automatically guided to a required device such as a measuring and storing device for the weft yarn.