Patent GB-697667-A (GB)
Title: Improvements in connection with feeding bobbins to multiple unit bobbin-winding frames
IPC: B65H67/048
Filed: 1950-11-10
Abstract: 697,667. Winding bobbins; bobbin supply arrangements. SCHARER K. J., (trading as MASCHINENFABRIK SCHARER). Nov. 10, 1950 [Feb. 3, 1950], No. 27511/50. Classes 120(ii) and 120(iii) [Also in Group II] A multiple-unit bobbin-winding frame, in which the winding units automatically change the bobbins when fully wound, is provided with a travelling dispenser accommodating a number of bobbins in the same holder which is adapted to be tripped by the respective units when ready to receive a bobbin as the dispenser passes them, to release the bobbins singly thereto from the holder each time it is thus tripped, the dispenser being adapted to be brought into operative conjunction periodically with a feeder to receive delivery of bobbins therefrom for replenishing'the holder. Bobbin feeder. As shown, Figs. 1 and 4, a bobbin magazine 19 is mounted at one end of a winder frame A on which a plurality of winders 3 are arranged in line. The bottom plates 21 of the magazine slope from end to end and towards a centrally disposed conveyer chain 20. Bobbins a withdrawn from the magazine by projecting link pairs: 25 of chain 20 are forced off the chain by engagement with an inclined way 38 and drop into a track 37 down which they slide to rest against a stop 42 on a pivoted arm 41. An oscillating feeler 35 located over track 37 disengages the drive to chain 20 when track 37 is full and the feeler movemenf is obstructed. Bobbin dispenser. A bobbin dispenser D is reciprocated along rails 51 on frame A by means of an endless chain 74 to which it is connected by a pivoted link 76. At one end of its travel a roller 53 on the dispenser moves arm 41 to release the bobbins on track 37 and allow them to slide on to a track 54 on the dispenser where they rest against a locking and releasing member 56. The latter is pivoted at 57, Fig. 12, and is moved over to release a bobbin from track 54 into a shoot 58 when either of two arms 64, 65 is engaged by a stop dog, in the form of a roller 69, projecting from a winder as the dispenser, is passing; member 56 is actuated by arm 64 when the dispenser is moving in one direction and by arm 65 when it is moving in the other direction. The bobbin released down shoot 58 passes down an aligned shoot 132, Fig. 5, fixed to the winder B in question, to an inclined holder 128 mounted at the end of a sliding rod 123 on the winder. Engagement of roller 69 by arm 64 or 65 pushes the roller-carrying arm 70 back to a retracted, inoperative position where it is retained by a pawl 82. Doffing and donninq arrangements. A reciprocating guide 89 for the thread b, Fig. 18, is moved axially step by step as winding proceeds by a feeler 98 engaging the periphery of the cop c being wound until a stop 96 carried by guide 89 engages a dog 99 on a rod 100 and moves the latter so as to disengage a counter holder from the wound cop and to trip a coupling arm 101 to connect a shaft.106 for one revolution to a continuously driven sleeve. Rotation of shaft 106 acts to (a) reciprocate a slide 117, Fig. 5, so that a spring-loaded flap 117a ejects the wound cop which drops into a collecting container, (b) reciprocate rod 123 carrying bobbin holder 128, the latter swinging to a horizontal position, so as to mount the empty bobbin on a free spindle 86, (c) disengage pawl 82 from rod 70 to allow the latter to spring back to an extended position where roller 69 will be ready to operate the bobbin dispenser again and (d) rotate the multi-spindle head 84 of the winder so as to bring an empty bobbin to the winding station, after which the counter holder engages the free end of the bobbin. In an alternative arrangement the dispenser may move in one direction along a closed track, supplying empty bobbins to winders arranged in two rows.