Patent GB-330341-A (GB)
Title: Improved means for printing, impressing or embossing upon sheet or strip material
IPC: B41F1/08
Filed: 1929-04-05
Abstract: 330,341. Gramophone Co., Ltd., and Fernberg, E. B. April 5, 1920. Embossing - mxachines; platen machines.-Sheet or strip material 26, Fig. 1, is printed, embossed, or impressed on both sides by passing the material between two members 6, 7 which print or otherwise impress the material consecutively on opposite sides, each member during its non- printing period supporting the material while the other member prints. The upper member 6 is provided with plain and printing faces 6<1>, 6<11> respectively perpendicular to one another, and the lower member 7 similarly has corresponding faces 7<1>, 7<11>. The members 6, 7 are pivoted to vertically-slidable rack-bars 4, 5 respectively which are operated bv bevel-gearing 9, 10 on a driven shaft 12 so as to move the members to and from one another. In order to reverse the drive of the shaft 12 periodically, it carries a friction disc 14 which is engaged bv either of two friction-discs 15, 16, Fig. 3, on a boss 19 held centrally by springs 20 on a sleeve 17 rotating with but reciprocated axially on a shaft 18 by the engagement of a fixed pin 24 in a cam groove 22 on a drum 23 fixed to the sleeve. Loosely pivoted to both of the members 6, 7 is a yoke-shaped lever 27, Fig. 1, rotatable on a pin 28 and having an arm 32 from which depends a spring-controlled rod carrying a roller bearing on a cam 34, Fig. 3, fixed to one member 46 of a clutch and freely mounted on the shaft 18. The other member 47 of the clutch is moved into engagement with the member 46 bv means of a cam 51 on a gearwheel 52 rotating with the shaft 18, so that the cam 34 is rotated and, through the arm 32 and lever 27, causes the members 6, 7 to turn through 90‹, the arrangement being such that the plain face of each member 6, 7 coacts with the printing face of the other member. The surfaces 6<1>, 7<1> have centrally-projecting pins which pass through the material and engage recesses in the surfaces 6<11>, 7<11>respectively to assist in locating the blank. The rack-bars 4, 5 are hollow and contain spring-pressed plungers adapted to engage notches in the members 6, 7 to hold them in either of their operative positions. After the printing operation, the material may be wound on a drum 66, or, if the printed parts are punched out from the strip by a die 68, the waste material may be wound on the drum. Where the material is to be embossed, the embossing- dies 6<11>, 7<11> may be heated. Inking-apparatus.-An inking-apparatus is provided for each member 6, 7 and consists of a fixed roller 55 to which ink is supplied from a duct 44 and which is situated adjacent to the inoperative position of the printing-surface 6<11> or 7". As the machine, operates, the inoperative printing-surface, is inked by its movement over the corresponding roller 55. A duct roller 60 is in contact with a driven roller 59 from which ink passes to a train of rollers 56, 57, 58. The rollers 60, 56, 57, 58, are mounted in side plates 64 pivoted on the fixed axis 59<1> of the rollers 59, and a. link 65 connects the plates 64 to the lever 27 so that the roller 56 contacts with the roller 55 when it is not in contact with the corresponding printing-surface.