Patent GB-1011537-A (GB)
Title: Marking apparatus
IPC: B29C65/48
Filed: 1962-09-24
Abstract: 1,011,537. Printing apparatus; ink-ribbon mechanisms. A. GOTTSCHO. Sept. 24, 1962 [Oct. 3, 1961], No. 36161/62. Headings B6C and B6F. An apparatus 1, Fig. 1, for printing on a web of material or a flattened tube of plastic material W during movement of the latter by pressing a marking tape T thereagainst, comprises an impression roller 32, guide means leading the tape T in the direction of movement of the material W over the roller 32, a rotatable die wheel 52 having marking means 66 projecting from its periphery for rolling contact with the tape T against the material on the roller 32, selectively intermittently operable drive means for turning the wheel 52 from an inoperative position in which the material is free to move between the roller 32 and the tape T to an operative position, so that marking of the material occurs by reason of the rolling contact of the means 66 with the tape T during turning of the wheel 52, and then back to an inoperative position, and means for feeding the tape T with the material W during said rolling contact. Printing surfaces.-The die wheel 52, Fig. 2, includes a generally cylindrical body 54 having removable segments covering heater elements Fig. 4 (not shown), and the marking means 66 in the form of metal-type elements are secured in position by rings 60 and a ring nut 62. The heater elements are connected to a source of electric current through a slip-ring assembly 68 and brushes 70. Impression surfaces.-The roller 32 includes a sleeve 80 of heat-resistant elastomeric material and a series of wooden rings 82, the sleeve being laterally adjustable so as to be disposed under the wheel 52 when it is adjusted in position. Tripping.-The mounting for the axle 78 of the roller 32 includes screws 86 which may be adjusted to vary the marking pressure and the axle may be turned by handles 96 so that it drops against the bottom portions of openings 92 if printing is to be discontinued. Driving arrangement.-A shaft 26, Fig. 1, is driven from an electric motor by a chain 154 and a sprocket 156 and a clutch 158 on the shaft 26 turns a drive sprocket 160 through 180 degrees whenever it is engaged. The sprocket 160 is connected to the shaft 48 of the wheel 52 by a chain 194, a shaft 148, and a coupling 218, Fig. 2. The clutch is engaged on energization of a solenoid 184 which moves a stop-pin 168 and thus permits the die wheel to turn through 180 degrees. Ink-ribbon mechanism.-The marking tape T is drawn from a reel 98, Fig. 1, and passes under a guide pin, not shown, over a further pin 106, over a pin 108, under a frictional drag member 110, and then across a guide blade or plate 118 having a rounded edge 122 and along the underside of the blade 118 so as to pass between the wheel 52 and the material W. A leaf spring 124 avoids excessive feeding of the tape. After printing the tape passes under and across a guide blade 132, across and under a guide blade 138, around a tape-feeding roller 146 and on to a take-up reel 150. The tape is fed by the roller 146 which is rotated only during contact of the wheel 52 with the tape. A roller 242 ensures positive feeding of the tape. The reel 150 is driven from the shaft 26.