Patent GB-1113518-A (GB)
Title: Method and apparatus for the treatment of ejected delivery bobbins
IPC: B65H67/06
Filed: 1966-05-03
Abstract: 1,113,518. Bobbin-sorting devices. SCHWEITER ENGINEERING WORK Ltd. (MASOHINENFABRIK SOHWEITER A.G.) 3 May, 1966 [5 May, 1965], No. 19524/.66. Heading D1F. In a method of handling the ejected delivery bobbins 1 of textile winding machines wherein the bobbin sleeves are freed of any smaller yarn remainder thereon and those bobbin sleeves with a larger yarn remainder thereon are again introduced to the winding operation, the reason for the ejection of each bobbin 1 is determined, a signal corresponding to the reason for ejecting such bobbin 1 is generated, and the generated signal is untilized for sorting the bobbins 1. At a yarn winding station, Fig. 1, the yarn F passes from a bobbin 1 through a yarn feeler and balloon breaker device 2, over a yarn brake 3, over a stop bracket 4 and around a grooved drum 5 to a wind-up bobbin 6. Upon breakage of the yarn F, the bracket 4 which is pivotable about a shaft 7 falls forwardly and an arm 8 thereon actuates a switch 9 to stop a drive motor 12 for the bobbin 6 and excite two electromagnets 15, 16. The armature 17 of the electromagnet 15 pivots a lever 18 counterclockwise about a shaft 19 to rock feeler fingers 20 provided on a hub 21 of the lever 18 into slots 22 of the device 2. If yarn F is present in the device 2 the fingers 20 bear against it but in the absence of yarn the arm 18' of the lever 18 closes a switch 23 to excite an electromagnet 26 which initiates a bobbin exchange operation. The electromagnet 16 moves a yarn remainder feeler device 29 towards the bobbin 1 through a guide 27 and a lever 28. The device 29 comprises arms 30, 31 which bear against the unwound base 1' of the bobbin 1 and the yarn package I", respectively. When the package 1" has dropped below a certain size a finger 33 adjustably mounted on the arm 31 closes a switch 32, in parallel with the switch 23, to excite the electromagnet 26 to trigger a bobbin exchange operation. The ejected bobbins pass into a downwardly inclined channel 50, Fig. 3, provided with openings 50b closable by flaps 51, 52 pivotable about shafts 53, 54, provided with extensions 51', 52' and normally held against stops 50' by springs 55. A rotatable shaft 56 is mounted parallel to the channel 50 and carries pawls 57 having nose portions 57' to engage the extensions 51', 52' to hold the flaps 51, 52 open. Opening of the flaps 51, 52 causes the pawls 57 to be pushed back and thus the shaft 56 to be rotated counterclockwise against the action of a spring 58 carried between a lever 59 and an arm 60. An electromagnet 45 is also carried between the lever 59 and the arm 60 and electromagents 46, 47 are connected to levers 61 fixed to the shafts 53, 54 by pull rods 62 and to arms 63.  Closure of the switch 23 excites the electromagnet 47, closure of the switch 32 excites the electromagnet 46 and closure of both switches 23, 32 excites an electromagnet 45. If the electromagnet 47 is energized the rod 62 is pulled to open the flap 51 and the extension 51' rotates the shafts 56 to cause the pawl 57 to release the flap 52 so that it is closed by the spring 55. Similarly, if the electromagnet 46 is energized the flap 52 is opened and the flap 51 closed. If the electromagnet 45 is energized the lever extension 59' is pulled upwards to rotate the shaft 56 counterclockwise so that the pawls 57 release both flaps 51, 52 which are closed by the springs 55. Consequently, the bobbins pass through either of the openings 50b or slide past both openings and are received in suitable receptacles. An electrical circuit for the operation is described, Fig. 2 (not shown). Alternatively, a flap could be associated with the electromagnet in a manner analogous to the flaps 51, 52.  In an alternative embodiment, Fig. 5, the ejected bobbins are received by the upper end of a channel 74 which is divided into smaller channels 77, 78, 79 by walls 75, 76 to the upper ends of which flaps 80, 81 are pivoted on shafts 82, 83. If only the switch 23 is closed, an electromagnet 47 is excited and the flap 81 is rocked by a pull rod 85 against a spring 87 to bear against an outer wall 74', Fig. 6 (not shown), so that the bobbin is guided into the channel 79. If only the switch 32 is closed, the electromagnet 46 is excited and rocks the flap 80 against the partition 76, Fig. 7 (not shown), so that the bobbin passes into the channel 77. If both switches 23, 32 are closed, neither of the electromagnets 46, 47 are energized and the flaps 80, 81 remain in the position shown in Fig. 5 so that the bobbin passes into the channel 78. An electrical circuit for the operation is described, Fig. 4 (not shown).