Patent GB-191307634-A (GB)
Title: Improvements in Paper Winding Machines.
Inventor: YATES WALSH
IPC: B65H19/22
Filed: 1913-04-01
Granted: 1914-03-26
Abstract: 7634. Yates, W. April 1. Winding webs. - Machines for cutting - up paper into pieces of desired length and winding these into rolls between a number of roll - forming members, which, upon completion of the roll, separate and release it, a r e c o nstructed with (1) a web feeding a n d severing device and a blanket moving over a suction chamber for feeding the severed lengths to the roll - forming members, (2) means for releasing the roll-forming members, (3) means for controlling the pressure of these members on the roll in such a manner that the pressure automatically decreases as the size of the roll increases, and (4) a rolldelivering device comprising axially moving chains which feed the roll from a pair of driven rollers to a pivoted shoot which delivers them into a large receptacle. (1) The web passes over a driven cutting - roller b fitted with a frictional roller m, and, periodically, a second roller a mounted in spring-raised arms is depressed into contact with roller b by a tappet arm i on a rotary shaft j so as to cut the web np into predetermined lengths. The shaft is driven from the shaft of the roller a by gearwheels which c a n be changed when a different transmission ratio is desired. The shaft of the roller b is driven from the main shaft by a sprocket chain and a clutch which is automatically disengaged for alternate revolutions in order to stop the feed of a new length until the previously severed length has been wound and delivered. A suitable form of clutch for this purpose is shown in Fig. 6, and consists of a disk 85 freely mounted on the shaft b<1> of the roller b, and a disk 86 fixed to this shaft, the two disks being connected when in driving position by a pivoted arm 93 pressed by a spring 96 to cause a pin 95 on an arm 93 to engage a freely-mounted arm 89 which acts on a spring 92 on a stop 91 carried by the disk 86 so as to rotate the disk 86. At the end of each complete motion of the shaft j, a projection on this shaft acts on a spring- controlled lever and moves a pin into the path of a projection 94 on the arm 93 and displaces the pin 95 from action on arm 89 so that the disk 85 makes a complete revolution without driving the shaft of the roller b. The pin 95 engages the arm 89 again at the completion of one complete movement of disk 85. The cut web is forwarded by belts q, t, Fig. 1, to a driven blanket u which passes over a suction chamber 16 mounted in brackets 17 and over an adjustable roller w. The chamber 16 is formed with a top having holes, preferably countersunk, the whole arrangement being such that the blanket and the paper thereon are drawn towards the top of the chamber 16 by the vacuum in the chamber. The paper then passes between rollers 20, v, and is formed into a roll in the space between these and a pair of rollers 29, 30 formed with circumferential and axial grooves and carried on arms 27, 28 pressed towards the other rollers, the rollers being driven by chains from a shaft 4 driven by chains from the main shaft p. (2) The arms 27, 28 are moved outwards so as to release the roll, when it is completely wound up, by the action of a constantly revolving arm 47 on a telescopic link 41 which can slide on the arm 38 of a bellcrank 38, 37 connected by an adjustable rod 39 to the arm 27. A pin 42 on the link is engaged by a slot 43 in a lever 44 which is acted on bv an arm 48 on the shaft j so as to force the end of link 41 into the path of the arm 47. The slot 43 is concentric with the shaft 46, and in the normal position of the lever 44 the arm 27 can move outwards to a slight extent without bringing the link 41 into the path of the arm 47 owing to the circular arrangement of slot 43. (3) The pressure of the arms 27, 28 towards the rollers 20, v is controlled by an adjustable rod 51 connected to an arm 49 on the same shaft as the bell-crank 38, 37, to which shaft is fixed an arm 52 on which is a carriage 57 fitted with weights which produce the desired pressure. This pressure is decreased as the roll increases in size by the outward movement of the arm 28 and consequent anti-clockwise movement of arm 50, which moves a spring-controlled arm 54 and by means of a cord 56 draws the carriage 57 towards the shaft of lever arm 49 and thereby reduces the action of the weight of the carriage on the arms 27, 28. A spring 80 may act on the arm 52 when the roll has been formed, and its main function is to assist in the return of the arms 49, 50. (4) The wound roll is guided by a shoot 59 to two rollers 60, 61 driven by cords or belts in such a direction as to keep the roll in rolled condition. A chain 64 with a lug 73 is driven axially of rollers 60, 61 and pushes the roll into a pivoted box 74, Fig. 2, provided with rollers 76 which diminish the friction on the roll as it is forced into the box. From the box 74 the roll is discharged by oscillating the box 74 against the action of a spring 79 by means of a cord 81 connected to an arm 78 on the shaft j.