Patent GB-223273-A (GB)
Title: A machine for winding paper webs
IPC: B65H19/22
Filed: 1923-06-15
Abstract: 223,273. Vickery, F. W., and Vickery's (1920), Ltd. June 15, 1923. Winding webs.-In a paper-winding machine of the class wherein the winding roll is carried on a rocking frame and rests against a revolving drum over which the paper is fed to it, the rocking frame being gradually tilted from the drum by the filling of the roll, a new winding-roll is supported in a position of readiness and its transference to the winding position is automatically set in train by the filling or removal of the filled roll or the resulting movement of the rocking frame which carries the roll during ing winding. The new winding-roll 15 is supported in a position of readiness against the winding-drum 1 by pivoted nose pieces 13 forming extensions of cam edges 12 on plates 11 attached to the rocking frame 3 which carries the bearings 4 supporting the winding-roll during winding. When a filled roll 5 is hoisted out of the bearings 4, the rocking frame 3 moves back towards the drum 1 under restraint of a dash-pot 10, the new winding-roll 15 at the same time being allowed to roll over the periphery of the drum 1 by the descending nose pieces 13 and cam edges 12 until it takes up its winding position in the bearings 4. During the transference of the new winding-roll 15 to the bearings 4 the web 2 is torn and the free end lapped round the new roll by means of a tape 16 previously positioned along a channel 18 in the angle between the web and the drum 1, one end of the tape being attached to a loose collar 31 on the shaft of the roller 15 and the other end secured by a spring grip to a tension spring. When the roller 15 moves into winding position the tape is freed from a pin 17 round which it is loosely hitched and pulled obliquely against the web 2, thereby severing it. At the same time the pull on the tape causes the collar 31 to bind on theshaft so that the tape commences to wind spirally on the roll 15 and starts the winding of the broken web thereon. Whilst in its position of readiness and during its transference to the bearings 4 the winding roll 15 is rotated at a speed faster than the travel of the web by means of bands 14 on the ends of the drum 1 in order that the paper may be wound tightly from the start. In the modification shown in Fig. 4, the new roll 15 is held on inclines 19 by pivoted catches 20 adapted to be released by hand or automatically by the outward movement of the rocking frame 3. Fig. 5 shows a further modification comprising chains 22 passing round pulleys 23, 24 for holding the new roll 15 on inclines 21. On removal of the filled roll 5 and consequent descent of the rocking frame 3 the chains are slackened and allow the roll 15 to descend to its winding position. In another arrangement, shown in Fig. 6, the new roll 15 is supported in rocking arms 25 with rear extensions 26 held down bv the shaft of the roll 5. When the latter is removed the roll 15 drops on to the drum 1 and then rolls down the arms 25 into winding position. In this arrangement the we.b is severed and the winding started on the new roll by an adhesive strip 27 supported on arms 28 connected by links 31 to the rocking plates 11. When the latter swing down the strip 27 is lowered on to the web 2 and directly afterwards is stuck to the roll 15, causing the web to be torn off and the free end started on the new roll. In another modification, shown in Fig. 7, the extreme outward movement of the rocking frame, sets in train the transference of the new roll to winding position. The hydraulic check 32 is pivoted at 33 to the machine frame and its plunger 36 rests during winding on an abutment 34 on the rocking frame 3. One of the chains 22 supporting the new roll 15 passes round a pulley 38 mounted on the plunger 36. When the roll 5 is nearly filled the plunger 36 drops off the abutment 34, and a valve 37 contacting with a stop 39 opens a bye-pass tube 35, whereby the plunger 36 is permitted to descend, thus slackening the chains 22 and lowering the new roll 15 towards its winding position.