Patent GB-191102609-A (GB)
Title: An Improved Machine for Making Cylinders of Cardboard and the like.
Inventor: LOVELL EDWARD COLSTON
IPC: B31B1/74
Filed: 1911-02-01
Granted: 1911-06-01
Abstract: 2609. Lovell, E. C. Feb. 1. Paper tubes.-A machine for forming cardboard cylinders having an internal coating of wax comprises a waxing-cylinder whereby a coating of wax is applied to the under surface of the card on one of the longitudinal sides, a knife whereby the card is cut transversely of its length, means for removing the cut portion and presenting it to a former, and means for applying a coating of glue to the under surface of the card clear of the waxed portion, for removing the cylinder from the former, and for receiving and retaining the finished cylinder. The cardboard is fed to the waxing - cylinder 20, Figs. 2 and 3, immersed in a bath of wax x heated by a steam jacket. The movement of the rollers 20, 21, 22, 22<1> is intermittent and is obtained by means of a ratchet wheel 30 operated by pawls 31. The body 32 carrying the pawls is actuated from the shaft 16 by a crank 33 and rod 35. The waxed cardboard is cut transversely by a fixed blade 40, Fig. 12, and a movable blade 39 one end of which is fixed and the other end reciprocated by a rack and pinion operated by a bell-crank lever on the shaft 9, one end of Which engages a cam race in the side of a rotating disk. The severed portion falls on to a table 54, and is moved into position by a plate or bar 57 one part of which is provided with a member 58 which slides in a channel 59 in the table and the other part rests on the table and has secured to it a perforated boss which engages a rod 61 secured baneath the table and actuated from the shaft 9 by a system of levers. Fingers 71 on a slide 72 worked by a rack and pinion correctly position the strip for the former 84. The edge of the cardboard strip is gripped between a lip 88, Fig. 6, on the inner cylinder 84 of the former and the outer cylindrical shell 85 on which the card is rolled, the former being rotated by a sector 92, Fig. 2, reciprocated by pinions 97, 98<1> and a connecting-rod 94. Normally the lip 88 and the shell 85 are held apart by a spring 91. By means of pawl and ratchet mechanism the former is rotated in one direction only. The former is geared to a cylinder 109 dipping in the glue receptacle 7, Fig. 17. Two series of rollers 110 press upon the card as it is wound round the former. The frame carrying the rollers is reciprocated by a pinion 113 and rack 111 the pinion being actuated by mechanism from the shaft 10. With the plates 118, 119, between which the card passes, close together and the rollers 125 in their raised position the card is held clear of the cylinder 109 but when the waxed portion has passed the rollers 125 descend and press the card on to the cylinder 109. The plates 118, 119 and rollers 125 are operated from the shaft 10 by a rod 128 and arm 127, a roller 122 raising the plate 118 by engaging with the surface 121. A pinion 107<b>, on the spindle on which the cylinder 109 is mounted, gears with a pinion 106' on the former 84. The cylinder when completed is stripped from the former by a reciprocating member 130 and is retained in a tubular body 131 while the next cylinder is being formed. Scrapers are provided to regulate the amount of glue and wax on the respective rollers.