Patent GB-382622-A (GB)
Title: Improvements in machines for forming adhesive paper strips
IPC: B31D1/02
Filed: 1931-07-27
Abstract: 382,622. Cutting and moistening adhesive paper strip. NOBLE, F. J., 94, Hotham Street, St. Kilda, Victoria, Australia. July 27, 1931, No. 21428. Convention date, Aug. 16, 1930. [Classes 31 (i) and 140.] Guillotine - machines; coating webs.-In a machine for forming adhesive paper strips, the adhesive paper 1A is drawn from a drum 1B and guided between two side-plates provided near the drum and carried on right- and lefthand threads of a spindle adapted to be rotated by knurled heads 1E to adjust the plates to suit different widths of paper strip. The paper strip passes from the guide-plates over a supporting-roller 26, between a printing-roller 1 and a feed-roller 15, between feed-rollers 20, 21, past a cutting-mechanism, and then between a moistening-roller 29 and an idler roller 31. The main operative pinion 18 drives through gear wheels the supporting-roller 26, the feedroller 15, the pair of feed-rollers 20, 21, and the moistening-roller 29. The main pinion 18 may also be connected by gearing to the paper roll 1B. The moistening-roller 29 is provided with collars 29A and carries an endless belt 30 of felt or like material which is held taut by a roller-weight 30A which keeps the belt partly immersed in water in a container 32 removably secured to the frame by clips 32A. The spindle 31A of the idler roller 31 is supported in U-shaped bearers 31B, and is formed as a series of thin discs spaced apart. The feedroller 21 may be constructed of spaced discs to prevent smearing of the printing on the paper strip and facilitate feeding. The cutting-mechanism comprises a spring-returned guillotine knife 33, adapted to slide vertically in slides 34 under the action of a lever 35 pivoted at 36 to the frame. The knife is connected by a link 37 to a pin 38 in the end of a lever 39 which is pivoted at 40 to the frame. A pin 41 in the knife projects through a slot 42 in the lever 35 so that on depression of the free end of the lever 35 the guillotine moves downwards against the action of a spring 43. The operative handle 44 of the machine is mounted on a shaft 45 and carries a strikerarm 46 which on its downward movement swings the lever 39 aside so that the pin 38 on its outer end slides upwardly in a loop 47 in the link 37. A return spring 48, held against movement in one direction by a pin 49 attached to the frame, is attached to the shaft 45 to swing the handle 44 backwards on release. The striker-arm 46 is carried upwards and moves the lever 39 about its pivot 40 to draw the link 37 downwardly to operate the knife. The knife 33 is provided with a sloping edge and cuts the paper against a fixed edge 51 which is adjustable by means of two set-screws 51A. A ratchet wheel 52 secured to the shaft 45 is engaged by a series of spring-pressed pawls 53 provided on the side of the main pinion 18 so that only a forward movement of the handle actuates the feeding of the paper strip. The length of paper ejected is determined by providing a fixed limit-stop 50 and an adjustable limit-stop 54 which can be set in a slot 55 in the frame. When it is desired to feed the paper continuously, the stops 50, 54 may be removed, and the spring 48 may be freed from the pin 49 by providing the shaft 45 with a telescopic end 56, connected to the shaft by a pin which engages a slot in the shaft. The telescopic end can be pressed inwardly so that it carries the striker-arm 46 and spring 48 out of alignment with the lever 39 and pin 49, to render the cutting-mechanism inoperative. The paper strip is gripped by the moistening-roller and its idler roller during the cutting operation. Specification 294,513, [Class 100 (i), Feeding and delivering webs &c.], is referred to.