GB189827443A - Improvements in Wrapping and Web Feeding and Cutting Machines. - Google Patents

Abstract

27,443. Newton, H. E., [Hoe, R.]. Dec. 29. Wrapping-up newspapers &c. - The wrapping-mechanism is similar to that described in Specification No. 12,896, A.D. 1894, in which the sides of the article x are guided over two short cylinders forming a core 41, while the middle part, which is covered by the wrapper y, passes inside of a casing 43. The article is driven by a bar 46 which passes alternately around the core and the roller above it ; the ends of the bar run in the grooves 50, 52, Fig. 3, and are directed by switches 53 which are operated by the bars impinging in their passage against triggers 54, 55. The tongue 42 for guiding the article around the core or out of the machine is carried on the shaft 57 of the switch, and moves with it. The bar is driven by radial spring pins 60 which project from the cores and the co-operating roller behind the bar. The wrapper goes round the article about one and a half times, and is folded round the leading end by a blade which folds and forces both wrapper and article between rollers and tapes at this point. The wrapper receives a streak of paste just before entering between the core and roller above it. The wrapped article is delivered flat. The wrapper feeding and cutting mechanism is devised to cut wrappers from a web with addresses printed on it so that the address shall always appear in the same position on the wrapper. TLe web y has a hole 2, Fig. 11, in it, at a fixed distance from each address, into which a finger k falls ; the finger is on the same shaft 310 as a detent 330, which falls with it on to a ratchet-wheel 240 on the feed-roller K and arrests the latter. The roller K is driven by a friction clutch 250, 260 at a speed slightly greater than is required, and it is released to continue its feeding action by a cam 360 on the clutch lifting the detent. Rollers L engage the edges of the web, and press it on to the roller K. The web roll is unrolled by an endless belt which rests upon it and is driven by passing round the pulley 400. The belt pulley is driven by a train of gearing including two friction discs 460, 470, the disc 470 being mounted on a swinging arm so that its centre may be brought nearer to or farther from the disc 460 to adjust the speed of the belt. The web is kept smooth between the roll and the roller K by a tension roller which rests upon it and moves freely in vertical guides. After leaving the feed-roller K, L the web passes between the cutting-rollers M, M', Fig. 16. The roller M' carrying the cutting-bed 620 also carries a pasting-strip 630, which receives paste from the apparatus 650, 640. The roller M' is cut away on each side of the pasting-strip, and opposite to it, in the roller M, there is a depression 3.