Abstract: A drain case 4 is disposed between the bottom wall of a unit case and the lower end of refrigerant passage pipes 15 of a stacked type refrigerant evaporator. The drain case 4 is W-shape in cross section, and comprising two pieces of outside inclined walls 32 contacting the side ends of two pieces of tank parts 16 and 17 formed at the lower end side of the refrigerant passage pipes 15, a chevron type protruded wall 33 contacting a recessed part 28 formed at the bottom end of the part between the adjacent two pieces of tank parts 16 and 17, and inside inclined walls 34 having a drain hole 36. In this arrangement, the condensed water flows from the side ends of the two pieces of tank parts 16 and 17 and the part between the two pieces of tank part 16 and 17 into the lower ends thereof reaches the two pieces of outside inclined walls 32 and protruded wall 33 of the drain case 4 before reaching the bottom end of the two pieces of tank parts 16 and 17, and then is efficiently drained therefrom.

Abstract: A bobbin-carrying apparatus to carry peg trays which have a tray and a peg protruded on one surface of the tray to support bobbins between conveyors provided at a fine spinning machine and bobbin-carrying routes provided at a winder. The bobbin-carrying apparatus comprises belts provided between the conveyors and the bobbin-carrying routes, pulleys guiding and supporting the belts, motors driving the belts functionally connected with the belts, and a pair of linear guiding members extending along the belts having the pegs of the peg trays therebetween. The belts carry the peg trays pressing the trays cooporating with the guiding members. The guiding members are provided relative to the belts so that the peg trays are carried while the pegs are arranged in the horizontal posture between the fine spinning machine and the winder.

Abstract: A bobbin carrier in a spinning machine for carrying out full-bobbins from one of a pair of carriers and carrying in empty bobbins to the other of the carriers through peg trays by a full-bobbins-carrying conveyor and an empty-bobbin-carrying conveyor to a plurality of spinning machines arranged in parallel with one another. An endless belt is provided over both of the carriers and the full-bobbins-carrying conveyor and the empty-bobbin-carrying conveyor, and pulleys guide the belt, further a motor is operatively connected to the belt to drive the belt. A pair of linear guiding members are arranged so as to extend along the belt and gasp pegs of peg trays. The belt carries the peg trays with grasping the trays elastically with pressure in cooperation with the guiding members. A full-bobbin-introducing portion is provided in the full-bobbin-carrying conveyor and allows giving and receiving of the peg trays from the belt to the full-bobbin-carrying conveyor.

Abstract: A yarn piecing method in an open-end spinning machine comprises stopping a yarn piecing machine in front of a spinning unit suffering a yarn breakage, reversing a package with a rewinding roller to rewind a yarn therefrom, cutting off the yarn to provide a yarn end having a predetermined length, moving the yarn end to a position upwardly of an outlet of a withdrawal tube in the spinning unit, reversing the rewinding roller again to feed the yarn end through the withdrawal tube to a fiber collecting surface of a spinning rotor in the spinning unit, supplying a sliver with a feed roller into the spinning unit, piecing the yarn end to the sliver on the fiber collecting surface, continuously drawing a pieced yarn from the spinning rotor, and moving the pieced yarn to a position between a presser roller and a draw-off roller which are being rotated while drawing the pieced yarn from the spinning rotor.

Abstract: A method of transferring oppositely but randomly oriented yarn packages from a spinning machine to a subsequent operation comprising moving the spinning machine conveyor on which the yarn packages are so disposed to deposit one of the packages onto a package turning means and stopping the conveyor; sensing the orientation of the package while on the package turning means; turning the package turning means in one direction or the other responsive to signals from the sensing means so that all sequential packages will be removed from the turning means facing in the same direction; moving the package off from the package turning means and sensing whether or not the package has been so removed; and again moving the spinning machine conveyor responsive to the sensing of the first package having been removed from the turning means.

Abstract: A method of transferring yarn packages in a spinning frame having a plurality of spinning stations arranged in a row on each longitudinal side thereof, a single run of a full package transferring conveyor disposed centrally along the machine and a doffing unit moveable along the respective spinning stations, is disclosed herein.

Abstract: Method of automatic doffing in a spinning unit is disclosed. Automatic doffing apparatus for use in practicing the method includes a bobbin loading device for carrying an empty bobbin to a donning position in the spinning unit, and the loading device has a pushing member which is movable with the loader. As the package is released from a bobbin holder and then supported adjacently to the bobbin holder, the loading device is moved forwardly toward the donning position. On the way to the donning position, the loading device pushes the supported package away from the donning area with its pushing member. The bobbin brought to a donning position is held by the bobbin holder. According to the method, unloading of a package and loading of an empty bobbin is made by a single motion, or advancing, of the bobbin loading device.

Abstract: An apparatus for locating a servicing device which travels along a parent textile machine, such as a spinning frame, having a plurality of stations and stops at any designated station of the parent machine to there perform a servicing operation, such as yarn piecing or cleaning by use of fluid, such as compressed air or vacuum, supplied from a fluid source provided separately from the servicing device. The apparatus comprises, on each station of the parent machine, a stationary connector communicating with the fluid source and a locating guide member having a locating guide groove therein, and, on the servicing device, an air cylinder, a locating rod actuated by the cylinder toward and away from the locating guide member and engageable with the guide groove and a communicating member movable together with the locating rod and engageable with the stationary connector.

Abstract: Method and apparatus for yarn piecing in a ringless spinning machine is provided, according to which yarn piecing is accomplished by unwinding a yarn from its package, rewinding a portion of the unwound yarn on to the package at one, definite position, cutting off the yarn end to a predetermined length, then introducing the cut end of the yarn into the spinning mechanism of the spinning unit, and then withdrawing the yarn from the spinning unit after the yarn end is connected with the fibers in the spinning mechanism.

Abstract: Yarns are pieced in a spinning machine utilizing an air stream, such as an open-end spinning machine or an air-jet spinning machine. For yarn piecing, an end of a yarn unwound from a bobbin is inserted into a twisting mechanism, and a sliver is newly supplied as a fleece so as to intertwine with the yarn end forming a pieced yarn portion. The thickness of the unwound yarn is detected by a detector and stored in a memory prior to insertion into the twisting mechanism. After the yarn and the sliver have been joined, the thickness of the pieced yarn portion is detected by the detector, and the detected thickness is compared with the stored thickness of the unwound yarn. If the thickness of the pieced yarn portion exceeds an allowable value as a result of such comparison, then the yarn is severed by a cutter, and thereafter a cut end of the yarn is pieced again with the fleece.

Abstract: A method and apparatus for supplying operational fluid to a traveling-type working machine, such as a yarn piecer or an auto-doffer, which serves a parent machine, such as a spinning frame. The working machine utilized in the present invention has a secondary fluid tank and at least one nozzle attached to an air cylinder. Prior to the working machine serving the parent machine, the nozzle is advanced by an air cylinder, operated by fluid supplied from the secondary fluid tank, so that it engages with one of the air intakes provided on the parent machine. Then operational fluid is introduced from a primary fluid source into the working machine through the engaged nozzle and air intake, and thereby the working machine carries out a specific operation for the parent machine. Simultaneously, the operational fluid is distributed to the secondary fluid tank in preparation for the next engagement of the nozzle and the air intake.

Abstract: Method and apparatus for supplying vacuum to a serving device which travels along a multi-station parent textile machine such as a spinning frame and providing a servicing operation such as yarn piecing or package doffing to the stations of the parent machine are disclosed, wherein a vacuum duct, which has vacuum outlet openings corresponding to the individual stations of the machine and lids rotatably supported for closing the vacuum outlet openings, is arranged along the parent machine and the servicing device includes a nozzle which takes in vacuum from the duct. The nozzle is advanced toward the vacuum duct just before the servicing device reaches a station which calls for the servicing, and the end of the nozzle rotates the lid to uncover its vacuum outlet opening and then is stopped in alignment with the opening. Then, the nozzle is moved with the servicing device to rotate the lid thereby closing the outlet opening, whereafter it is retracted to its original position.

Abstract: This invention provides a freezer/refrigerator system which has a compressor driven by an engine of a vehicle to equally supply a refrigerant under pressure to a cooler unit and a freezer/refrigerator unit. An electromagnetic valve is disposed in a refrigerant inlet pipe of the cooler unit, while a constant-pressure expansion valve which is opened at a given pressure corresponding to a proper vaporizing temperature of the refrigerant is disposed at the refrigerant inlet pipe of the freezer/refrigerator unit. A control circuit supplies a control signal to the electromagnetic valve which is opened for 1 minute and closed for 15 seconds. The refrigerant is alternately supplied to the cooler unit and the freezer/refrigerator unit upon opening/closing of the constant-pressure expansion valve in accordance with changes in the pressure of the refrigerant.

Abstract: A bobbin holding device for holding at least one bobbin includes a hollow body having a bobbin receiving opening and connected at a base portion thereof to a doffing bar of a bobbin doffing and donning apparatus, a bobbin holding member disposed in the body and movable radially relative to the bobbin receiving opening between a projected position and a retracted position, and a flexible diaphragm disposed in the body in fluid tight relation with respect to the bobbin holding member for applying a fluid pressure on the bobbin holding member to move the same into the projected position. The bobbin holding device further includes a block member disposed between the flexible diaphragm and the doffing bar, the block member being formed with a fluid passage(s) to supply a pressurized fluid to the diaphragm without passing it through the doffing bar.

Abstract: An apparatus for detecting an erroneously inserted empty bobbin is disposed on a spinning frame which is provided with an automatic doffing and donning apparatus and a conveyor having empty bobbin supporting pegs mounted thereon. The detecting apparatus photoelectrically or electromechanically detects whether or not an empty bobbin is correctly inserted onto the corresponding empty bobbin supporting peg based on the fact that an incorrectly inserted bobbin inclines backwards and projects upwards. When the incorrectly inserted bobbin is detected, an alarm is actuated in order to notify an operator in charge of the spinning frame of the same.

Abstract: A cutting blade of a device for cutting a yarn in a textile machine such as a spinning frame, rewinding machine, weaving machine. The cutting blade is provided with a main body and a sharp cutting edge formed on a periphery portion thereof by an etching process.

Abstract: A bobbin doffing and donning method in a spinning machine including a conveyor for conveying the empty and full bobbins along the machine, and a succession of bobbin holders for holding and transferring the bobbins between the spindles on the machine and the conveyor. The empty bobbins are removed from the conveyor by grasping the upper end of an empty bobbin by a holder and moving the holder upwardly. The holder is then moved to position the empty bobbin above a corresponding full bobbin on a spindle with the empty bobbin in axial alignment with the full bobbin. The empty bobbin is released from the holder and the lower end abuts against the upper end of the full bobbin. The holder is moved down along the empty bobbin until it reaches the junction between the empty and full bobbins and then grasps both the empty and full bobbins simultaneously.

Abstract: In a textile machine provided with a doffing and donning apparatus utilizing a conveyer belt for temporarily supporting full size yarn packages doffed from the textile machine and carrying the yarn packages outside the textile machine and for temporarily supporting fresh bobbins supplied from a fresh bobbin supply device mounted on an outend frame of the textile machine, a method and device for transferring fresh bobbins from the bobbin supply device to the respective pegs of the conveyer belt when the conveyer belt is driven before starting the donning operation. When the conveyer belt is driven so as to pick up the fresh bobbins by the respective pegs, each peg is inserted into the bottom bore of the corresponding fresh bobbin in such a way that the head of the peg approaches the bottom bore of the fresh bobbin along a passage inclined to a plane along which the fresh bobbins are supported.

Abstract: In a textile machine provided with a doffing and donning apparatus utilizing a conveyor belt for temporarily supporting full size yarn packages doffed from the textile machine and carrying the yarn packages outside the textile machine and for temporarily supporting fresh bobbins supplied from a fresh bobbin supply device mounted on an outend frame of the textile machine, a method and device for transferring fresh bobbins from the bobbin supply device to the respective pegs of the conveyor belt when the conveyor belt is driven before starting the donning operation. When the conveyor belt is driven so as to pick up the fresh bobbins by the respective pegs, each peg is inserted into the bottom bore of the corresponding fresh bobbin in such a way that the head of the peg approaches the bottom bore of the fresh bobbin along a passage inclined to a plane along which the fresh bobbins are supported.