Patent GB-412413-A (GB)
Title: Improvements in or relating to yarn or like winding machines
IPC: B65H63/02
Filed: 1933-06-29
Abstract: 412,413. Yarn -winding machines. UNIVERSAL WINDING CO., 95, South Street, Boston, U.S.A. June 29, 1933, No. 18553. Convention date, Jan. 30. [Class 120 (ii).] In yarn or like winding-machines for winding cops, cones and other packages of yarn, thread, cord or the like, wherein an enlargement or slub detector is arranged to engage the yarn between the supply and the winding- spindle and is adapted, when engaged by a slub to stop the machine without breaking the yarn, and wherein a starting-device is provided to reset the stopping-mechanism, the starting- device is also adapted, when controlled by the operator, to bring into operation means which, if engaged by a slub, will break the yarn, whereby the passage of a slub into the wound package is prevented during the starting-operations when the automatic stop-mechanism is inoperable. As described, a starting handle 55 is provided with a sickle arm 141 carrying a spring-finger 140 which, when the handle is operated to reset the stopping-mechanism, engages the detectorelement 120 of a yarn-cleaner and slub-detector constructed as described in Specification 365,652 and retains it in position, as shown in Fig. 3, so that when an enlargement meets the detector the yarn is held and broken. The finger 140 serves also to return the detector 120 to its normal operative position after the passage of a slub when the parts are reset. The invention is described as applied to the machine described in Specification 283,546, [Class 120 (ii)], wherein the yarn package or bobbin C is driven by a roller 13 and the guide traversed by a cam 5, and the machine is stopped when the yarn breaks or the supply is exhausted by swinging the bobbin cradle 16 upwards by the engagement of a pawl 20 carried by a pivoted rod 23, the winding-spindle being braked by a shoe 21 as described in Specification 311,263, [Class 120 (ii)]. The yarn f passes from a supply bobbin through a guide 83, a tension device which may be of any usual construction or as described below mounted on a bracket 70, the yarn-cleaner and slub detector, the guide 100, the breakage lever 85, over a roller to provide an extended path, and thence downwards around a guide rod 150 to the winding-spindle. The rod 23 is rotated about a longitudinal axis by a spring 24, so as to cause the pawl 20 to act on a quadrant 18 on the cradle 16, when a detent blade 25 on the end of the rod is released from a latch 26 carried by a pivoted bracket 30 adapted to lift the yarn from the guide, as described in Specification 283,546. The bracket 30 is operated by a lever 34, which is swung in a clockwise direction about a pivot 33 and engages a tail-piece on the bracket 30 when a lever 37 carried thereby is raised against a stop-pin 38 and brought into contact with a toothed wheel 40 on the cam shaft. The lever 37 is raised by a link 41 hooked to a crank-bracket 42, which is engaged by two levers 45, 46 respectively connected with the slub detector 120 and the breakage lever 85 by a trip-lever 132 and a link 96, so that when either drops, it turns the bracket. The starting or resetting handle 55 is bolted to a frame 50, which is provided with an arm 57 adapted to engage the rod 23 to cause it to re-engage with the latch 26, and with a leg adapted to operate a lever 60 to remove the lever 37 from contact with the wheel 40, the bracket 30 falling by gravity to allow the yarn to be picked up by the guide during its traverse. The handle 55 is held depressed until the slack in the yarn is taken up and the breakage lever 85 consequently restored to its normal position, the lever 46 being thereby lifted to release the crank-bracket 42 and lever 37. During this depression of the handle the lever 37 cannot be operated and, as described above and shown in Fig. 3, any slub, which normally would operate the detector and the lever 37, is arrested by the slub-catcher, which cannot yield owing to the action of the spring- lever 140, and the yarn is broken. The yarncleaner and slub-detector comprises a standard 106, Fig. 6, of sheet metal with ears 112, of which one is extended to form a support for an adjustable cleaning-plate 115 which co-operates with the detector 120 pivoted in the ears 112. The detector 120 is shaped to provide edges to co-operate with rests or surfaces 116, 119 formed on the adjustable plate 115, so that the yarn is engaged on four sides, and engages the trip-lever 132 by means of a trigger arm 131 and so, upon movement occasioned by a slub, actuates the stop mechanism as described above. The tension-device comprises discs 74, 75, Fig. 5, mounted in porcelain bushes on a pin 72, the disc 74 being held axially against the bracket 70 and the disc 75 pressed by a weighted lever 77 acting through a spring-finger 80, and a conical head 81 and a cupped washer carried by the pin 72.