Patent GB-241022-A (GB)
Title: Improvements in or relating to embossing machines
IPC: B41J3/38
Filed: 1924-10-28
Abstract: 241,022. Wade, H., (American Multigraph Co.). Oct. 28, 1924. Type-case machines for embossing metal; driving- mechanism; hammer - impression arrangements.-An embossing-machine particularly for making priming- places comprises a nomally stationary die-carriage provided with mating embossing- dies and associated with keycontrolled driving - mechanism for moving the die-carriage from the rest position to a position in which the selected pair of dies is at the impression point. The machine shown in Figs 1, 2, and 5 produces printing-scrips A<5>, Fig. 16, having flanged inturned sides adapted to engage overhanging flanges L on a holder L', the strip being emboseed and cut into lengths by the dies, and being shaped by means of feed and discharge rollers. Sliding dies 40, 41, arranged in mating pairs, are mounted in a die-carriage 30 which rides by means of rollers on a rod 35 and ha guide-rollers 45, 46 engaging bars 47, 48. The dies are retracted by means of spring-combs 54, 55 which engage notches in the dies and are secured to brackets 52, 53 on the top plate 31 of the die carriage, yokes 50, 51 limiting the outward movement of the combs. The die-carriage is moved to the right or left by means of solenoids 60, 61 having a core C connected to a lever 62 which is pivoted on a standard 63 and is formed with a forked end engaging a roller on the die-carriage. The circuits of the solenoids 60, 61 are closed by the keys 20 in the left and right hand halves of the keyboard respectively, the rear ends of the keylevers 21 being arranged in two groups, each engaging a rod 222 on a lever 221 adapted to close a contact 165 in circuit with the associated solenoid. The movements of the die-carriage to the right or left are limited by engagement of the right and left-hand groups of key-levers with stops 72 on a carriage 80. Fig. 5, coupled to the die-carriage, each stop being carried by rod 76, Fig. 6, provided with a cushioning-spring 78, and being associated with a vertically-movable latch 74. When any key is depressed, the associated solenoid moves the die-carriage to the right or left until the key-lever engages the associated stop 72 and arrests the die-carriage in position to present the selected pair of dies for impression, the latch being raised and then dropping to lock the die-carriage. The stop-carriage is provided with rollers 81 running in a grooved bar 83, and embraces a plate 39 on the die-carriage. The selected pair of dies are forced towards each other by means of plungers 98, Fig. 5, actuated by levers 95, 96 engaging cams 93, 94 on a driving-shaft 91. The plungers are retracted by springs 99 and norma ly engage screws 97 on the levers. The shaf 91 is coupled to a driving- pulley 90 by means of a one-revolution clutch 19 controlled by a rocking bail 110 in the path of the late@es 74. The clutch consists of a disc secured to the shaft 91 and formed with peripheral notches receiving rollers which co-operate with a flange on the pulley 90. The rollers are urged into contact with the flange by springs but are normally restrained by means of pins on a loose disc 138 having an arm 143 in contact with a rod 115 which is connected by linkage 113, 114 to the bail 110. On depressing any key-lever, the bail is lifted by one of the latches 74. the rod is refracted, and a spring turns the disc 138 slightly, the rollers being thereby permitted to engage the flange and couple the shaft. When the latch drops, a spring 120 returns the rod into position for re-engaging the arm 143 to throw out the clutch upon completion of a revolution. The de @ @d @ey-lever is locked by means of a spring-urged plate 149, Fig. 5, having a flange 150 for engaging a notch 147 in the key-lever. After impression, the key-lever is released by means of a latch 160, Fig. 2, carried by the impression-lever 95 and adapted to engage an arm 151 on the rock shaft 148 carrying the plates 149. The latch is released from the arm bv means of a pla e 161. The key-lever and switch-operating lever 221 are positively returned by means of an arm 265 on the shaft 148. The die-carriage is returned to the normal position by springs 6. When a line has been embused, the strip is severed by means of special dies 270. 271 Fig 13, controlled by a shearing-key, the die 270 having grooves 274, 275, for receiving the edges of the strip, and a deep outwardly inclined groove 276 for receiving a part 277 nf the die 271. On depressing the shearing-key, the part 277 enters the groove 276 and shears a part A<4> of the strip. Case-shift mechanism; shift-key actions.-The dies are each provided with three types for small letters, capitals, and numerals &c. respectively, the types on the male dies 40 being formed on projections. The die-carriage is mounted on slides 180, Fig. 1, engaging levers 182, 183 united by a bar 187 the le@ver @183 being provided with a pivoted member 190 Fig. 2. having shiftkeys 193, 194. Normally the slides rest on screw and the top dies are at the printing line, but on depressing the key 193 or 194 the die-carriage is raised and the lower dies are brought to the printing-line, the movement being limited by engagement of the member 190 with a stop 197 or 198. The die-carriage is locked in either shift-position by means of a nivoted spring-urged latch 200 having notches 202 for engaging the lever 183. Letter-spacing mechanism; space-key actions.- The blank strip is fed from a roll 108, Fig. 1, and is channeled by means of feed-rollers 100, 101, the roller 10 having conical flanges, and a peripherel groove into which enters the roller 101. The feed-rollers are geared together, and the roller 101 has a ratchet-wheel 252 co-operating with a pawl 253 on a lever 254 connected to the impression-lever 95, feed occurring during return of the lever. The space-bar 240 operates the impression-lever, and thereby the feed-mechanism, without effecting impression. The channeled strip rides on a rib 5, Fig. 5, on the bar 47 and abuts on the bar 48, these bars having a central gap 9 for the passage of the dies. The dischargerollers 102. 103 are driven continuously from the pulley 90 by gearing, and are formed with cooperating flanges and grooves for in-turning the sides of the channelled strip.