GB1044508A - Marking apparatus - Google Patents

Abstract

1,044,508. Colour-embossing; feeding foil. ADOLPH GOTTSCHO Inc. Aug. 23, 1965, No. 36013/65. Headings B6F and B6J. Apparatus for colour-embossing an intermittently advanced web W, Fig. 3 (not shown), or individual sheets through a blocking foil T comprises a plurality of heated dies 72, Figs. 2 and 3 (not shown), laterally spaced to produce laterally spaced marks across the web, and a plurality of foils T, which may be of different colours, arranged side-by-side with one in alignment with each die. The dies are reciprocated vertically by a pneumatic cylinder 56, the web and tapes being advanced while the dies are raised. When the dies are lowered, guide rods 106, 108 for the foils, carrying guide wires 110, 112, Fig. 5, not shown), are forced downwards against springs 130, Fig. 4, so as to bring the foils against the web and against a platen comprising an impression pad 78 beneath each die. the pads being individually adjustable by screws 82 so as to be exactly parallel to the dies. . Feeding foid.-A plurality of rolls S of foil, Fig. 3, rest loosely in a trough 86 and are laterally aligned with the dies by pivoted guide members 102. The foils are drawn by a feed roller 140 over a roller 98, between spacing collars 114 on the rod 106, over the guide wires 110, which are mounted on the collars, over the web W and under the dies, over the further wires 112 and between collars 114 on the rod 108, between the roller 140 and a pressure roller 142 spring-urged against the roller 142, and into a trough 150 to form rolls R, the foils being tensioned by continuously driven rollers 152, 154 on which the rolls R are supported. The rolls R are spaced by guide members 166. The roller 140 is rotated by a continuously driven shaft 176 passing through it, through a clutch arrangement comprising a pawl member 206 which engages a ratchet wheel 198 over an angular distance determined, to control the length of the feed step, by the adjustment of two cams 220, 222.