Patent GB-962763-A (GB)
Title: Bobbin changing mechanism for automatic creeling
Inventor: LYON ROY
IPC: D01G27/04
Filed: 1961-07-25
Abstract: 962,763. Bobbin-changing apparatus. COTTON, SILK and MAN-MADE FIBRES RESEARCH ASSOCIATION. Oct. 24, 1962 [July 25, 1961], No. 26826/61. Heading D1F. Apparatus for replacing a bobbin at a lower position by a heavier bobbin at a higher position, compresses a linkage having two sets of bobbinengaging members supported between the positions, and held by detent means in a starting position, means being provided for withdrawing the detent so that the linkage will move under gravity to bring the bobbin-engaging members into engagement with the bobbins, whereupon due to the difference in weight of the two bobbins, the linkage will move to transfer each bobbin to the position previously occupied by the other, and then come again under the influence of the detent in its starting-position. As applied to lap-bobbins, the apparatus comprises plates 11 spaced sufficiently apart to allow a lap bobbin to pass between them. Carried by each plate is a set of links of the form shown, the two sets being aligned and each comprising five links. Each link 12 is pivoted at 13 on the outside of the corresponding plate and has a rigid link 14 pivoted to a link 15 which is pivoted to a link 16. This is rigid with a shaft 17 rotatable on the plates and extending between them and rigidly connected to links 18 one on the inside of each plate. The links 12 are adapted to raise an empty bobbin E from a position where it is supported by a roller R and guides by one on the inside of each plate; each accordingly has an inwardly-directed spring-loaded latch 12b which can move over a spindle-end when the link moves clockwise,but which grips the spindle-end when the link moves anti-clockwise. The links 18 are adapted to receive the spindle F1 of a full bobbin and each accordingly has a hooked end. The two sets of links are maintained in the position shown by the engagement of a solenoid-operated detent 21 with a lug 12a on one of the links 12. The full bobbin F is supported at each side by a hook-part S1 of a support S. When the detent is retracted, the weight-distribution of the links causes links 12 to pivot clockwise, bringing the parts to the position shown in Fig. 2, where a lug 18a on each link 18 strikes a latch S3 to lift the spindle F1 by its ends into the hooked ends of the links 18. The latches 12h have now moved over the spindle-ends of bobbin E. The links 18 being now loaded by package F pivot anti-clockwise and links 12 in consequence pivot anti-clockwise so that the latches 12b engage the spindle-ends of bobbin E and lift it. As these movements continue, bobbin F is lowered into guides G1,G2 and then into guides G, and bobbin E is raised into hooks S2 of support S. One bobbin-changing apparatus described may be used for servicing reeling-arrangements such as are described in Specification 957,045 when used for supplying the set of drafting units forming part of the system described in Specification 859,514. Each drafting-unit has reeling apparatus consisting of two bobbin stations, A, B and one bobbin-changing changing apparatus is associated with each station, while the hooked supports S are carried by an endless conveyer, a run which lies above one of the two rows of bobbin-changing apparatus. When the lap bobbin at one station is exhausted, the one at the other begins to feed and a signal is given to cause a full bobbin to be conveyed along on the part S, to the appropriate position, and, after an interval to operate solenoid 20, a further signal then causes the empty bobbin now on the part S 2  to be conveyed away.