Patent GB-1030954-A (GB)
Title: Improvements relating to textile bobbin holders
IPC: D01H1/18
Filed: 1964-02-05
Abstract: 1,030,954. Supporting creel bobbins. R. K. WHITEHEAD and R. K. WHITEHEAD. (JUN.) Feb. 5, 1964 [Nov. 1, 1963], No. 4909/64. Heading B1J. A bobbin holder Fig. 1 comprises a tubular shell S on which there is a slidably mounted a sleeve R. In the sheath S is a central body coupled to a pair of pawls 51, 52 that project from the shell S, as shown, to support a bobbin B. When the bobbin B is raised it moves the sleeve R up the shell S to cause the central body to move to, and remain at, a predetermined upper setting in which it retracts the pawls 51, 52 into the shell S. The bobbin B can then be removed and the sleeve 2 returns to the setting shown. To secure a fresh bobbin in position, the bobbin is used to push the sleeve R upwardly until it releases the central body from its upper setting. On lowering the bobbin, the sleeve R and the now released central body follow the bobbin downwardly and, as a result, the pawls 51, 52 reappear to hold the bobbin. The pawls 51, 52 may be pivoted to the lower end of a central body C as shown in Fig. 3 and 4 (not shown). First embodiment. Figs. 8, 9,10,11 (not shown). Integral with the upper end of the central body C in a plug 57 having opposed rods 32, 33 (33 not shown) that project through elongated slots in the shell S for engagement by the sleeve R. Rotatably mounted above the plug 57 in a hub 59 having opposed rods 63, 64, and a plurality of ratchet teeth 62. The sheath S is fitted internally with (a) a pair of check blocks 70, 71; (b) a pair of channel blocks 74,75; (c) a pair of adjusting blocks 72,73; and (d) ratchet teeth 67; all shaped and arranged as shown. In Fig. 9 the central body C in its lowermost setting with its pawls extended and supporting a bobbin. When the bobbin is pushed upwardly it moves the sleeve R against the rods 32, 33 to carry the plug 57 and the hub 59 upwardly until the teeth 62 mesh with the teeth 67 and cause the hub 59 to rotate through approximately 90 degrees as in Fig. 10. When the bobbin B is lowered the central body C follows the bobbin until the rods 63, 64 rest in the check blocks 70,71 Fig. 11. The check blocks 70, 71 are shaped to cause the plug 57 to complete its desired rotation of 90 degrees and they hold the plug 57 and hence the central body C at the already mentioned predetermined upper setting that maintains the pawls 51, 52 within the shell S. The bobbin B can then be removed and a fresh bobbin placed on the shell S. When the fresh bobbin is moved up the shell S it moves with it the ring R to cause the teeth 62 to approach and mesh with the teeth 67 and then cause the hub 59 to rotate through a further angle of approximately 90 degrees. The opposed rods 63,64 are now so positioned that they are free to pass between the check blocks 70, 71 when the bobbin is lowered and as a result they eventually strike the adjusting blocks 72, 73 that cause the rods 63, 64 to revert to the position shown in Fig. 9. The central body is then once again, in its lowermost setting with the result that the pawl 51, 52 extend from the shell S to support the bobbin. Second embodiment. Figs. 15,16,17, 18 (not shown). In this embodiment the upper end of the central body C carries a pair of wheels each having four projections illustrated theoretically in Fig. 15 by the circles 85, 85<SP>1</SP>, 85<SP>11</SP>, 85<SP>111</SP>. The interior of the shell S is formed with the cam surfaces illustrated theoretically at 86 to 90, 92 and 94 to 96. Fig. 15 shows the circles 85, 8511 resting on the supporting surfaces 86, 87 to maintain the wheel and hence the central body C in the already mentioned predetermined upper setting. If the central body C is raised the circles 85<SP>1</SP>, 85<SP>11</SP> engage the cam surfaces 94,96, Fig. 16 to rotate the wheel slightly and on lowering the central body C the circle 85<SP>1</SP> engages the cam surface 95 to cause the wheel to complete a 90 degrees turn, Fig. 17. The central body C can then be moved to its lowermost setting since the wheel can now pass between the supporting surfaces 86, 87 as shown in Fig. 18. When the central body C is again raised it is now the circles 85<SP>1</SP>,8511 that will engage the cam surfaces 94, 96,and on subsequently lowering the central body the circle 85<SP>1</SP> will engage the cam surface 95 to cause the wheel to complete a further turn of 90 degrees and so cause the circles 85<SP>1</SP>,85<SP>111</SP> to rest on supporting surfaces 86,87 to once again maintain the central body C in the already mentioned predetermined elevated position. Third embodiment. Figs. 26, 27, 28 (not shown). In this embodiment the central body C is again fitted with a hub at its upper end that is capable of turning about the axis of the central body C. The hub carries opposed rods 99,100 (100 is not shown in Figs, 26, 27, 28) and the rods 99, 100 are slidable in opposed camming channels in the shell S. Fig. 26 shows the rod 99 resing on a holding surface 107 to maintain the central body C in its predetermined upper setting and so hold the pawls 51, 52 in their retracted position to permit a bobbin to be removed. When a fresh bobbin is pushed upwardly on to the shell S the rod 99 is raised and is forced to follow the path P3, Fig. 27. When the bobbin is lowered the rod 99 follows the path P4, Fig. 28 from whence it can pass into the channel 101 to a lower setting in which the pawls project from the sheath S to hold the bobbin. When the bobbin is again raised the rod 99 passes upwardly to the right under the island member 103 to return to the setting shown in Fig. 25 when the rod 99 is again supported on the holding surface 107 to hold the central body C in its predetermined upper setting.