Patent GB-190710141-A (GB)
Title: Improvements in and relating to Bundling Machines.
Inventor: ADSHEAD GEORGE HERBERT
Filed: 1907-05-01
Granted: 1908-04-30
Abstract: 10,141. Adshead, G. H. May 1. Wrapping-up newspapers &c.-Relates to machines operating in the manner described in Specification No. 26,865, A.D. 1902, for tying-up bundles of newspapers &c. A wrapping-attachment is provided by means of which a sheet of paper is placed at the top and bottom of the bundle for protecting the same. The invention relates to the driv. ing-mechanism, the compressing - mechanism, the needle-motion, a string-tensioning device, bundledischarging means, and controlling-gear, while the wrapping-attachment includes means for dividing the paper web into suitable lengths and means for placing the paper sheets on the top and bottom of the bundle. The machine is driven by an electric motor e, Fig. 2, through belt gearing d, a pulley c, a clutch f, spur-wheels h, and a wheel i, Fig. 1, which is toothed on one half of its circumference and gears intermittently with a spur-wheel k of half its diameter. During the idle periods of the wheel k, the smooth part of the circumference of the wheel i engages a recess k, re-engagement at the proper time being ensured by a projection m on each wheel. The wheel k drives a crank-disk 4 for operating the tying and compressing means, while the wheel i drives the bundle-feeder arms r by means of a crank-pin u and a connecting-rod t having a slotted-end v engaging a pin w in a rod x, which is pivoted to a radius-arm 2 and to the feeder arms at z. The object of the slot v is to give a dwell at the end of the feeding stroke. A wheel n driven by the wheel k actuates the knotter-shaft o by means of, a chain. The bundle is compressed between skates 26 fixed on a bridge 27 and similar skates 25 carried on a compressor frame 22. This frame moves in suitable guides 23 and carries a spring-mounted platen 24 on which the bundle rests. It is operated by means of a lever 11 slotted at one end and engaging a pin 21 on the frame, and connected at the other end to a shaft 9, which is counterbalanced by a weight 13 and is connected to a lever 7 intermittently operated by the crankpin 5 of the disk 4. In order to avoid shock on engagement of the pin 5, the lever may be provided with a spring buffer, or with a slot in which the pin may work. The needles 15, similar to those described in the above-mentioned Specification, are carried on a frame 16 moving in guides 17 and operated from the crank-disk 4 by means simitar to that employed for operating the compressor frame. The string for tying the bundles passes from supply bobbins 29 over stationary pulleys 30, under guidepulleys 35, and thence to the needles 15 and the knotters carried by the knotter-sbaft o. The string is maintained at the required tension by means of the weight 37 adjustable along the pivoted lever 36. At the proper moment, the supply of string is arrested by means of brakes 31, Figs. 4 and 4<a>, which are held in a spring-controlled stirrup 34, Figs. 1, 2, and 4, actuated by a pin 33, moving with the feeder arms and engaging the stirrup, which is adjusted by means of screws 32. The bundle-discharging means is similar to that described in the above-mentioned Specification; the pivoted discharging-fingers 48, Fig. 1, in this case fall by their own weight after cleating the pivoted levers 49, on the return stroke. Controlling-levers are arranged to withdraw the clutch f automatically at the beginning of the feeding stroke, and also to withdraw the clutch at any moment. The clutch is directly controlled through rods 44 by a hand-lever 45, Figs. 2 and 2<a>. The clutch may also be automatically withdrawn by means of a stop 40 on a rod 41, reciprocating with the feeder arms, engaging a notch in a lever 39 pivoted at one end to a bellcrank lever 43<a> connected to the gear 44, as shown. The other end of the lever is connected to the gear 43, which is controlled by the hand-lever 42. In the operative position of the hand-lever 42, the notched lever 39 is engaged by the pin 40 and the clutch is withdrawn. At the same time, the gear 44 operates the hand-lever 45 moving it to the right, Fig. 2<a>, where it is retained by a pivoted notched lever 47 engaging a pin on the hand-lever. To re-start the machine, the hand-lever 42 is depressed, thus raising the lever 47 by means of the slotted link 46, whereupon the hand-lever 45 flies to the left by the action of the spring 47<x> of the clutch f. In the wrapping-up mechanism, the paper web 50, Fig. 7, is divided by means of cutting-wheels 51 driven from the knotter-shaft o. The cut lengths of paper pass on to a flyer 53 actuated by means of a bell-crank sector 67 connected to a rod 65 reciprocated by a cam 64, as shown. The grippers 60 for placing the sheets on the table b are operated by means of fixed cams 61 on the feeder arms r and are rotated by means of chains and chain-wheels 55, 56, 57 carried by links 58.59. which are pivoted to the feeder arms and to the spindle carrying the cam 64 respectively, and are-pivoted together at their junction. When the machine is in action, a length of paper deposited on the flyer is seized by the grippers and placed on the table, and a pile of newspapers is placed on the wrapper, which should be longer than the bundle. During the previous return stroke, a second length of paper has been deposited on the flyer, the cutting- rolls rotating more quickly than the knotter shaft, and this paper is " flyed " on the top of the bundle, the actions being, if necessary, assisted by means of an air-blast. The feeder arms next move the bundle on to the platen, the string held by the knotter thus partly encircling the bundle. At the right moment the string brakes come into operation. The compressing-platen and skates then rise and the needles move up and lay the string across the knotter, the extra length of string required being obtained by raising the weighted lever 36. The knotters next tie the knot, cut the string, and retain the free end ready for the next bundle. The bundle is then discharged and a new one fed on to the compressing-platen. One or more strings may be used as desired, means being provided for placing the bundles in register when only one knotter is used.