Patent GB-191507176-A (GB)
Title: Improvements in and relating to Winding Machines for Yarn and the like.
IPC: B65H54/28
Filed: 1915-05-12
Granted: 1915-10-28
Abstract: 7176. Barber &. Colman, [Barber-Colman Co.]. May 12. Winding-machines; stop-motions; creel arrangements.-In a machine in which the cheese or other package wound contains the yarn &c. drawn from two or more bobbins, an automatic device is provided to unite the yarn from a reserve or fresh bobbin to the yarn already wound upon the cheese &c. In a machine comprising a number of winding-units, the automatic uniting-device is mounted upon a travelling " winder-tending mechanism " adapted to co-operate successively with the winding-units, and is adapted to detect the exhausting of the thread being wound upon the cheese. The machine described comprises a number of drum winding-units comprising cheeses d, Fig. 4, resting on drums 2, the yarn being drawn from bobbins a, b, the latter of which is a reserve bobbin, the yarn from which is adapted to be united to the yarn on the cheese when the yarn from the bobbin a is exhausted. The speed of winding and the speed of the winder-tending mechanism are so adjusted that, shortly before the winder-tending mechanism reaches a given bobbin, that bobbin will have been emptied. The bobbins a, b are supported in angularly adjustable frames 45. The cheese d, Fig. 5, is carried by a lever 8 pivoted in an arm 6 secured to the frame, and is adapted, when the yarn being wound exhausts, to be thrown over away from the drum 2 by a continuously oscillating hook 31 engaging a depending wire loop 30. The yarn being wound passes over stationary fingers 55, 56 carried by a bracket 54, and a finger 63 carried by a spring-controlled spindle 61. When the yarn exhausts, the spindle 61 turns, and arm 66 carries the loop 30 into position to be engaged by the hook 31. A lever 37 controlled by a spring 39 is mounted in the arm 6 and bears at one end on a lug 40 on the pivot of the lever 8. When the cheese is small, the lug stands at an acute angle with the lever 37, so that the spring can exert sufficient pres. sure to keep the cheese in contact with the drum. As the cheese grows, the lug turns into a position at right-angles to the lever, and the effect of the spring diminishes. The reserve thread is held in a clamp 52 in a bracket 48 and is kept by a bridge 53 in a position independent of which bobbin it is led from. The tube c, Fig. 13, upon which the cheese is wound is carried on a pin 10 secured to the arm 8. A sleeve 11 with a bearing-bushing 12 is secured to the pin 10 by a screw 13. A spring-controlled sliding detent 19, adapted to engage a groove in the tube c, is arranged between disks 14, 15 and is adapted to be withdrawn by pressing the stud 21, a conical portion on the stem 22 of which is thus made to engage the edge of a slot in the detent. The winder-tending-mechanism is supported upon a framework 72, Fig. 18, adapted to move round the machine and supported upon rails 70, 71. Rollers 73, 74 engage the rail 70, and rollers 75 the rail 71. A motor is mounted upon the framework and drives, through suitable gearing 77, 78, 81, 82, 83, 84, Fig. 23, a shaft 86, to which can be clutched a pinion 87 gearing with a rack 88 on the rail 70. The mechanism may be driven by hand by a crank-handle applied to the shaft 94 connected through bevel-gearing 95 to the shaft 86. The framework 72 carries a cam-bar 109 adapted to engage and raise the lever 8 of a cheese which has been thrown over into position to be operated upon, in order to relieve the cheese from the pressure of the spring 39. A cam-plate 116 carried by brackets 114 then engages the lever 8 and deposits the cheese on a roller 118, Figs. 18 and 22, which rotates it in the direction to unwind an end. The end is drawn into the mouth of a suction tube 101 connected to the necessary exhaust apparatus mounted on the framework and driven by the motor thereon. The cheese then passes on to a roller 125, which continues to unwind yarn therefrom to provide slack for a swinging arm 131, which draws a bight down to the knot-tying mechanism. If the end of the yarn should have become wound upon the tube beside the cheese, a pair of co-operating shear blades 139, 146, Fig. 26, are adapted to engage and sever the yarn to provide a free end To prevent the air current from untwisting the yarn, a pivoted screen may be swung into position to obstruct the passage of the yarn through the tube 101. The yarn carried down by the arm 131 is guided by an oscillating arm 186, Fig. 38, having thread-engaging plates 191, 192, into notches 169, 171, 173, which have already received the end of the yarn from the reserve bobbin. The two ends thus positioned are tied by a device comprising a rotary tying-bill 161 and a stripper disk or hood 162. The ends of yarn cut off by the tying-bill are drawn into a suction tube 102, and the end of yarn extending from the arm 131 to the tube 101 is severed by a shear blade and drawn away through the tube. When the yarn is positioned and clamped ready for the knotter, rotation of the cheese is stopped to prevent further slack being produced, by the raising of a plate 205 on to which the cheese moves. When the knot is tied, the cheese moves on to a roller 218 which is rotated in the direction to wind up the slack in the tied yarn upon the cheese. To prevent the yarn from slipping out from between the cheese and the roller 125 or plate 205, a travelling hook 210, Fig. 22, engages the yarn and keeps that portion extending directly from the cheese as far as possible vertical. When the slack has been taken up by the roller 218, a cam 235 on the framework 72 engages the lever 8 and carries the cheese over on to a shelf carried by the arms 114 just above the drums 2. To prevent the cheese from resting with its full weight on the drum 2 until it has attained a sufficient speed, a spring-controlled arm 240 engages the end of the lever 8 carrying the cheese until the yarn, which has been engaged by lugs on a travelling chain and carried into position, is laid in the cam-slot by a cam-operated arm. The detector and throw-out mechanism is reset by a cam-bar 254 carried by the travelling mechanism. The winder-tending mechanism may be operating upon a number of units at one and the same time. A head 260 carried by a rod 259 is provided to contact with a part of a winding-unit still in operative position, so as to stop the travelling mechanism until that unit is ready to be operated upon. Movement of the rod 259 is arranged to open a switch included in the circuit of the motor. To prevent reserve threads from being united to full-wound cheeses, a gauge or feeler 263 is provided, which, when it contacts with a fully-wound cheese, is swung about its pivot and adapted to open a switch in the motor circuit.