Patent GB-191515822-A (GB)
Title: Improvements in and relating to Wrapping Machines.
Inventor: PRICE ALBERT M
IPC: B65B11/58
Filed: 1915-11-09
Abstract: 15,822. Price, A. M. Nov. 9. Packeting by wrapping-up.-Flat tablets of chewing-gum are wrapped individually and grouped into bundles of five enclosed in a pasted binder 366, Fig. 65. The first wrappers are partly applied in the wheel 128, Fig. 1, and the wrapping is finished and the bundles formed by means of a uniformly rotating transporter 255 and folding-channel 212, the binders being applied in the wheel 292. The tablets 80, Fig. 7, are supplied from a vertical receptacle 81, which runs off obliquely at the bottom 200. On the outside, the exposed edges are supported by a spring frame 205, which is disturbed by the pusher 192, so that the tablets at the bottom are shifted relatively to avoid sticking under pressure. The first wrapping is double. The inner paraffined-paper wrapper is supplied from a roll 85, the web of which passes through continuously rotating rollers 88, 89 and through a bent wire frame 103, 102, allowing slack paper to accumulate, so that the intermittently rotating rollers 98, 99 can feed quickly through the knife 176. The blank is then fed under the roll 158 on top of the outer wrapper fed from the bottom of the pile 108 through rollers 118, 119. The sides of the tablet are enclosed in the intermittently rotating wheel 128, the last fold being made against a segmental surface 213 at the end of a table 212 fixed to the machine frame, Fig. 55. Fixed over the table is a cover 219, Figs. 22 and 23, having oblique surfaces 238, 237 for turning the projecting ends of the wrappers up and on to the upper surface of the tablet. The tablets are moved individually out of the wheel 128 and through the folding-table by means of a transporting member consisting of a pair of spaced plates 255 mounted on weighted crank-arms 252, so that, in rotating, it oscillates vertically and horizontally. The plates are formed with spaced teeth 263 which engage each tablet in turn. The last tooth 266 .lifts the leading tablet under spring arms 242 and up the face of a stop 271, until the bundle is formed. The vertical plates of the transporter move in deep peripheral slots in the wheel 128 and in continuous parallel slots 216 in the table, Fig. 33. The outer wrapper or binder is fed from the base of the pile 366, Fig. 10, into a notch in the periphery of the second wrapping-wheel 292. The bottom of the notch is formed in a transverse rotary plug 298, so that the position of the binder can be adjusted with regard to the radial pocket 293. There are two pockets, the bottoms of which are formed by plates 300 connected together and acting as ejector bars. The bundle is transferred from the table 212 to the pocket by fingers 349 on the lower end of a vertical oscillating rod 347, which is connected by a crank to a shaft 315 (carrying the pinion 321, Fig. 3, which is a rear view) passing horizontally from front to rear. The stop is depressed against a spring in this movement. During the intermittent rotation of the wheel 292, the binder is pasted by an oscillating paster 406, the rollers 411 of which pass through slots in the folding- surface 390. Two plates 421 oscillating on the shaft 415 move behind the bar 300 at its ends and force it slightly beyond the periphery of the wheel, so as to eject the packet into the receiving-channel 363. The partial wrapping- means and the transporting-means are driven at a relatively high speed from the main shaft 72, Figs. 7 and 14, through which passes the clutch-operating rod 77, while the binder-applying means is actuated at a relatively low speed by reducing-gears, in which is interposed a safety clutch so as to disconnect the latter means (on the shaft 315) in the event of undue resistance, the first or main clutch being simultaneously disconnected. The main shaft 72, driven from the pulley 75 controlled by the clutch 76, is connected through the gearing 140, 141, 312, 320 to a bevel-pinion 321 loose on the shaft 315, but having a recess 432, Fig. 15, engaging a tapering projection 431, Fig. 16, on a swivelling plate 430 fixed to the shaft. The plate becomes disengaged on undue resistance to the rotation of the shaft, and, in so doing, pushes through the rod 434 the end of a lever 438, which in turn, through another lever 440. disengages the clutch 76.