Patent GB-489435-A (GB)
Title: Improved yarn winding machine
IPC: B65H67/06
Filed: 1937-01-26
Abstract: 489,435. Winding yarns. ABBOTT MACHINE CO. Jan. 26, 1937, No. 2298. Con. vention date, Feb. 12, 1936. [Classes 120 (ii) and 120 (iii)] A yarn-winding machine of the kind disclosed in Specifications 459,413 and 459,430 is provided with a magazine for the fresh supply packages arranged to travel along a series of stationary winding units with periodic stoppages for refilling and to deliver fresh supply packages to the several winding units, the magazine having means for holding the ends of such packages in readiness for union with, and for conveying them to, the ends of the respective winding-packages of the winding units. As shown, the magazine comprises a number of compartments 98 forming part of a structure supported by rollers 81, 85 on rails 12, 15 of the machine frame in which the winding packages 25 are supported by arms 23 pivoted on a shaft 27, the packages being driven by longitudinal rollers 18 disposed at each side of the frame and the yarn being traversed along the package by grooves in the rollers or by separate traverse devices. The magazine and associated parts are moved around the frame by an endless chain 91 connected thereto by a link 92 and bracket 79 and driven by sprockets 90 at opposite ends of the'machine and means are provided for periodically stopping and starting the motion of the chain and magazine without stopping the rollers 18 so that the magazine is stationary when it is being refilled ; a bracket 84 carries the roller 85 and insulated electric brushes 87 which co-operate with stationary rails 86 for supplying current to the various mechanisms including a suction fan 72 connected to a vertical tube 74 arranged centrally in the magazine. A suction tube 75, arranged within the tube 74 and spaced therefrom, extends to a suction nozzle 77 and carries the bracket 79 from which the rollers 81 are carried and the compartments 98 of the magazine are arranged around the tube 74, each compartment carrying a yarn supply package and being slotted at the exterior of the magazine and supporting the yarn supply package on a hinged bottom 100 ; the bottom member 97 of the magazine rests upon and is driven by a continuously rotating disc 105 when a latch is disengaged from one of a series of pegs corresponding in number to the compartments 98. The latch is carried by a spindle 170 having a rod 174 extending near the rail 14 of the machine frame and when the magazine arrives opposite a winding unit in which the yarn has broken or failed, as it does in the normal working of the machine, a pin 175 on the rail 14 engages the rod 174 and swings it, against the action of a spring, to move the latch from the peg and allow the magazine to rotate. The yarn from the unwinding package 33 passes over a pivoted bail 25 on its way to the package 25 and when the yarn breaks or fails, the bail falls outwards and brings a lug 53 pivoted to a catch 41 pivoted in the machine frame into the path of an oscillating bar 59 which moves the lug upwards and disengages the catch from a projection 42 on a spring-controlied rod 38 connected to the package arm 23 by a pin and slot 45, the rod 3S being then moved by its spring 40 to lift the package from the roller 18. The rod 38 at the top is pivoted to pivoted lever 47 carrying a bowl 49 which is engaged by a cam 180 on the bracket 79 and as the magazine arrives opposite the winding unit, the cam first depresses the rod 38 to move the package 25 below the path of the suction nozzle 77 and an unwinding roller 118 driven by a motor 122 on the bracket 79 ; the package is held in this position until the unwinding roller is directly above it, when the cam 180 allows the spring 40 to move the package into contact with the roller 118 which unwinds the package and the end of the yarn thereon is taken by the suction nozzle 77 down a slot in the tube 74 to the tying bills of a knotter 125 mounted in the magazine. The ends of the yarn from the supply packages are placed by the operator across the suction tube 74 and as the magazine is rotated, the end of a supply package is carried to the knotter, the hinged bottom 100 of the compartment drops so that the supply package therein is discharged from the compartment down a shoot 115 on to a peg 30 of the unwinding yarn support 28, and the knotter is rotated to tie together the end of the supply package and the found end from the package 25. The cam 180 raises the bowl 49 and restores the package to its mid-position out of contact with the rollers 18 and 118 until the magazine has rotated to discharge a supply package to the holder 28 and operate the knotter 125, the cam 180 then raising the bowl 49 to lower the package into contact with the roller 18 for rewinding and bring the projection 42 on the rod 38 below the catch 41. The knotter is actuated through gearing from a motor 126 and is normally restrained against operation by a latch which engages a notched plate in the gearing, but rotation of the magazine causes one of a series of projections 151 on the plate 97 to lift a rod 153 and the latch and release the notched plate so that the knotter makes one revolution and ties together the end found by the nozzle 77 and the end of the yarn of the supply package discharged by the rotation of the magazine. The bobbin of the unwinding package 33 on the support 28 is doffed therefrom and a peg 30 moved to receive the mass discharged from the magazine by an arm 170a which projects from the bracket 84 and has a bent portion 171a which rotates the support through 120‹, the doffed bobbin falling on to a conveyer 175 and dropping into a box 176 at the end of the machine. If the supply bobbin is not exhausted when the magazine arrives opposite a unit, the tilting of the peg 30 by the arm 170a causes the yarn to become broken. The knotter may be that described in Specification 489,434. [Group VII], but is preferably that described in Specification 489,433, [Group VII], and is adapted to operate in the manner according to the general principle described in Specification 423,422, [Group VII], and the roller 18, when provided with crossed yarn-traversing grooves, may be that described in Specification 339,679, [Class 120 (ii)].