Patent GB-565557-A (GB)
Title: Improvements relating to machines for printing or embossing nameplates and the like
IPC: B41J3/38
Filed: 1943-05-13
Abstract: 565,557. Embossing nameplates and labels. THOMAS, A. P. L. May 13, 1943, Nos. 7659 and 8235. [Class 100 (ii)] [Also in Groups XV and XXII] A machine for embossing and stamping nameplates and labels from strips 18 of plastic material, such as cellulose acetate, or of metal, comprises a press operated by cams or the like and fitted with a tool 3 comprising co-operating punching and colour embossing members through which the strip material is fed in steps between successive operations of the press. The strip 18 is secured by a clip 19 to a table 17 which can slide on an oscillating support 1 mounted on a pivot 2 and oscillated twice for each revolution of a shaft 5 by cam rollers 6. The strip passes between the spring- separated parts 64, 65, Fig. 13, of the tool 3 which are forced together by the upward movement of the support 1 and thus emboss the strip 18 with a coloured impression ABCD, Fig. 14, by means of a die 68 and a colour foil 21, and also punch the edges of the strip by dies 69, 71, Fig. 11, to form semicircular edges, by means of a cutter 70 cut the strip transversely through almost the complete width, and also perforate the strip by means of perforating devices 72. To adjust the depth of the embossed impression, the tool 3 co-operates with a head 4 adjustable by means of a screw-operated wedge 12. The table 17 is advanced stepwise by means of a hooked arm 29, Fig. 1, pivoted to an oscillating bellcrank 25 operated by pins 30 on the cam-shaft 5. The table 17 is fitted with pins 24 which are engaged in succession as the arm 29 moves to the right. As the arm returns the arm 29 rides over one pin 24 and engages the next. The shaft 5 is driven by worm gearing 9, 10 from a motor 8, and a sliding dog clutch can be operated by a hand lever 47 so as to clutch the worm-wheel 10 to the shaft 5 or to a hand-operated lever 40 which can be utilised to give the machine a trial operation. When the lever 47 is moved to bring in the mechanical drive, a spring-catch 52 holds the clutch lever in position until the operation on the strip is complete, when a dog pin 62 on the table 17 acts upon a rod 58 which has a yieldable connection with an arm 57 on the shaft of the catch 52 which is thereupon actuated to release the clutch. As shown in Fig. 13, the colour foil 21 passes under the die 68, but over the other dies, and over the stripping member 74. The heating element in the head 4 is adjustable by a pointer 76 and scale 76a, and the temperature indicated by a thermometer 76b. When metal labels are being formed, the embossing-die 94, Fig. 18, is arranged in an aperture in the member 64, and the corners of pairs of adjacent labels are punched by means of dies 98 having operative surfaces in the form of tangential quadrants. The co-operating matrices are formed with a pair of rods of a radius equal to that of the quadrants and placed together so as to form an aperture of the same size as the quadrants. Between the dies 94 is a cutting- member 96 which makes a cut substantially across the strip 18. The strip 18 passes under a guide ledge 95, Fig. 19, which acts as a stripper, and apertures are punched in the strip by punches 90, 91.