Patent GB-688532-A (GB)
Title: Improvements in or relating to an embossing machine
IPC: B41J3/38
Filed: 1948-10-05
Abstract: 688,532. Embossing-machines. ROLLINSON, E. W. (Addressograph-Multigraph Corporation). Oct. 5, 1948, No. 25951/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 2, 1949.] Class 100(iv) A machine for embossing metal plates and having a number of pairs of punches and dies, is controlled by a record-tape-reading unit driven by a single cycle drive so that a predetermined portion of the record-tape is read at each cycle and has control means adapted to initiate relative movement between the record-tape and the reading unit only after the embossing operation corresponding to the last reading is completed. The embossing machine 50 is as described in Specification 666,208 and the reading unit 40 (similar to that described in Specification 415,798), Fig. 1, is removably mounted below an intermediate unit 45 which houses the transmitting linkage and comprises a pair of supporting tubes 460, extending through and fixed to machine legs 50a, and which have blocks 461, 462 carrying transverse rods 467, 469 serving to support two end frames 401, 402 and a base plate 400 of the reader unit 40. The base plate 400 extends to the right forming a platform 400A, Fig. 2, carrying the sensing device S of the reading unit through which a record-tape is intermittently fed by one-revolution clutch from a motor M1, and code bars 407, Fig. 2, are set.to cause actuation of a selected rocker 410, Fig. 4. The rockers by engagement of their depending arms 410B with the code bars, are moved clockwise against the pull of springs 412 causing arms 410C to engage hooks 496H of levers 496 pivoted about a shaft 485. Each lever 496 is resiliently connected by a pin-and-slot 501, 500 and a spring 502 to a transmitting lever 488 which upon being moved clockwise draws a link 492 downwardly and operates the respective key lever 53. In order that the reading unit 40 may be removed the intermediate unit 45 is constructed so the levers 496 can be moved backwardly and upwardly to release their connections with the arms 410C of the rockers 410. The levers 496, 488 are mounted on the shaft 485 which is carried on arms 481 secured by a screw-and-slot connection 482, 483 to brackets 480 on a transverse strip 476 connected to the ends ot rods 477 adjustably and telescopically secured in the supporting tubes 460. The backward and upward releasing movement is obtained. by unscrewing the arms 481 and sliding them upwardly on the brackets 480. In addition to the actuation of the various character keys the record sensing device causes the various power operations of the machine viz.: (i) Carriage-return; (ii) Carriage-release; (iii) Line-spacing; (iv) " Rub-out ", (i.e. to avoid printing of erroneous matter in the record tape); (iv) Space-bar. The sensing of any of the.codes initiating these power operations causes actuation of a respective rocker 410 situated at the side of the character rockers and the arms 410C engage levers 441A-445A, Fig. 7, respectively, and close contacts 441-445 mounted on a transverse strip 446, Fig. 4, carried between the end frames 401, 402 to effect operation of solenoids mechanically connected to the appropriate keys on the embossing machine. To commence operations a handle 420, Fig. 2, is turned clockwise through 90 degrees rotating a disc 418, see also Fig. 7, which is latched in position by a tooth 421 T on a lever 421 engaging in a notch 422 where the disc is held until either a STOP button 427, Fig. 2, engages the other end of the lever 421, or by the operation of a solenoid 423 energized when either the tape or the supply of blank plates is exhausted through the respective safety contacts 600, 601 and contacts 434, always closed in the latched position of the disc 418. The disc carries a spring lever 425 that engages and closes, on clockwise rotation only of the disc, contacts 430 energizing a clutch solenoid 415 whose operation permits the one cycle operation of the machine. A lever 419 mounted on the disc shaft 416, is, in the position after 90 degrees rotation of the handle 420, disengaged from a cam surface 419A permitting operation of the clutch solenoid 415. Character selecting now takes place to effect the embossing, and, during the restoring of each key, a link 586 and rocker 585 are actuated, and through a screw 591, close contacts 590 which are connected to the clutch solenoid 415 each operation of which effects a further cycle of operation including the initiation of the relative movement between the record-tape and the reading unit. Clutch solenoid is also energized upon the completion of line spacing, work spacing, and plate feeding and ejecting; connection to the solenoid for line-spacing is effected from a line-spacing cam 240 and contacts 563; connection for word spacing is effected from contacts 555 of solenoid 510 energized by contacts 445A; and connection for plate feeding and ejecting is effected from contacts 576 and 566 simultaneously actuated by the plate-feeding mechanism 270, 577 and plate-ejecting mechanism 175, 568 respectively. Carriage return, carriage release and line spacing in the embossing machine are controlled by the contacts 441-443, respectively operating solenoids 372, 370, 376 and actuating keys 224S, 222S and 221S which effect the operations as described in Specification 666,208.