Patent GB-120215-A (GB)
Title: Improvements in and relating to Machines for Producing Controllers for Typographic Machines.
Inventor: AGGER EUGENE EWALD
IPC: B41B25/00
Filed: 1916-11-02
Abstract: 120,215. Agger, E. E. Nov. 2, 1916. Strip-perforating machines; justifying type; keyboards. - Justification perforations or marks for either under-set or over-set lines are made in a strip by a set of punches or markers which are controlled by the units-measuring mechanism. The machine shown resembles that described in Specification 10910/03 and may be employed for preparing strips for controlling the typewriting- mechanism described in that Specification. The perforations for characters &c. are made by punches 10, Fig. 2, on a strip which is fed by rollers 7, 8, the devices for operating the punches 10 and the feed-rollers being described in Specifications 120,243 and 120,244 respectively. The justification perforations are made on a separate strip by punches 521, Fig. 7. (1) The unitsmeasuring mechanism comprises a set of keycontrolled slides 153, Fig. 2, which co-operate with a differentially-notched bar 171 to determine the angular movement of a shaft 179 geared to a units-bar 300, Fig. 4. The slides 153 are each formed with a notch 162 for engagement with a universal bar 173, individual springs 160 normally holding the slides in a raised and retracted position with the notches disengaged. The key-lovers 2 are each provided with n rod 150 carrying a spring head 151 adapted to engage a lug 154 on the associated slide. The universal bar 174 is carried by a rock-shaft 175 coupled by a link 177 to a bell-crank 178 carrying a pawl 181 for driving a ratchet-wheel 180 on the shaft 179. The bellcrank 178 is coupled by a link 184 to a bell-crank 185 engaging a cam 187 on a shaft 188 which is released step by step by an escapement under the control of the driving-shaft 40. On depressing the key-levers, the associated slide 153 is coupled to the universal bar 173, the shaft 188 is released and a spring 189 causes the pawl 181 to trail over the ratchet-wheel until the slide is arrested by the notched bar 171. On release of the key, the pawl is driven by the shaft 188, and the shaft 179 and the units-bar 300 are advanced through a space depending on the depth of the notch. The units-bar gears with a pinion 302 on a shaft 303, Fig. 6, connected to the shaft 179 by a keycontrolled coupling which enables the units-bar to be set back to eliminate the units recorded for an erroneously-selected character. The coupling comprises arms 318, 338, Fig. 6, splined on the shafts 179, 303 and formed with fingers 319, 332 for engagement with a pinion 310 secured to the shaft 303. The hubs of the arms 318, 331 engage arms 316, 335 on shafts 317, 336 provided with arms 344, 345 which are coupled by a link 346. The finger 319 normally engages the pinion 310 and couples the shafts 179, 303, but on depressing a correction-key 342, a cam 343 rocks the arm 335 and causes the finger 332 to engage the pinion and the finger 319 to disengage. A spring drum 306, geared to the pinion 302, then moves the units-bar backwards through one or more units as determined by the adjustment of stops 340 between which plays the arm 331. The correctionkey may be depressed repeatedly. (2) If a number of cases are employed, a stop bar 171 is provided for each case, the stop bars being secured to a shaft 172 which is turned by shift-keys to bring the required stop bar opposite the slides 153. The shift-keys operate sliding stop-pins which are arranged in a circle and co-operate with an arm on the frictionally-driven shaft 172. The shiftkeys also operate devices for restoring the previously-set stops and for locking the universal bar 173 to prevent operation of the units-measuring mechanism. The shift-keys control punches for making shift perforations. (3) The justificationmechanism is controlled by a hand-lever 400, Fig. 4, carrying a pawl 402 for driving a ratchet-wheel 307 on the spring drum 306, a stop 405 normally disengaging the pawl. The operation of the handlever automaticallv disconnects the units-bar from the units-measuring mechanism. For this purpose, the hand-lever is arranged to rock the shaft 317, Fig. 6, and thereby disengage the.arm 318 from the pinion 310, a slot 346<a> preventing the arm 331 from moving into engagement. The arm 318 is then locked by a latch 420, coupled by a link 426 to the line-start key. The stop 301, Fig. 4, for the units-bar is adjustably mounted in an arm 450 on a rock-shaft 451 provided with an arm 453 having a pin 454 co-operating with a latch 455 which is pivoted at 456 and is formed with a cam 459 for engaging a roller 460 on the handlever. A detent 462 is normally held clear of the ratchet-wheel 307 by a latch 466 which is coupled by a link 467 to the latch 455. The hand-lever is geared to a slide 407, and the shaft 451 is connected by arms 480, 482 and a link 481 to a slide 484. The slides 407, 484 form part of the mechanism, described below, for controlling the punches 521. For under-set lines, the units-bar is moved up to the stop 452 by one or more strokes of the hand-lever, the stop being secured by the engagement of the latch 455 with the pin 454. In the case of under-set lines, the units-bar engages the stop 454 and causes the shaft 451 to rock and transmit movement to the slide 484. In the case of an over-set line, only a short movement is given to the hand-lever and the pawl 402 does not operate the ratchet-wheel. The latch 455 is provided with a spring.joint 457 which permits the latch to yield when it is obstructed by the pin 454. In the case of both under-set and over-set lines, the operation of the hand-lever causes the detent 462 to engage the ratchet-wheel 307 and prevent backward movement of the unitsrack. The detent is released by depressing a lineclosing key 477, Fig. 6, which is coupled to a link 468 provided with a collar 469 for engaging the tail of the detent. Before commencing a new line, the line-start key is depressed to release the latch 420 in conneioxn with the coupling-arm 318. (4) The justification-strip passes between sprocketrollers 516, 500, Fig. 7, and is fed at each operation of the space-bar 514, Fig. 4, which is coupled by a link 510 to a bell-crank 508 controlling an anchor which co-operates with an escapement wheel 502 on the frictionallv-driven shaft 501 of the roller 500. The punching-devices for the justification-strip comprises slides 520, Figs. 7, 9, and 18, movable across the strip and each provided with a punch 521 and a die 522. The punches are operated by a bar 540 carried bv toggles 541 connected to a lever 543 which is operated by a cam 545 on a shaft 546. The shaft 546 can be clutched to a driving-wheel 547 by a clutch 550 controlled by the line-closing key 447. The clutch consists of a collar formed with teeth 553 for engaging the wheel 547 and also formed with a helical groove 553 for engaging a rod operated by the key 447. The slides 520 are urged forward by springs 525 but are normally retained by detents 526 engaging escapement teeth 527 on the slides. The shaft 501 gears with a rack 561 provided with a stop 562, Fig. 18, for engaging the rack 407. In the case of under-set lines, if the number of units to be distributed is less than the number of spaces, the rack 407, operated by the hand-lever 400, is arrested by the engagement of the units-bar with the stop 301. If however the number of units to be distributed is greater than the number of spaces, the hand-lever 400 is operated more than once and the rack 407 is arrested by the stop 562 on 561 for all the strokes except the last, which is arrested by the engagement of the units-bar with the stop 301. At each forward movement of the rack 407 a number of detents 526 are lifted by the engagement of the nose 563 of the rack with lugs 564 on the detents, the slides 520 associated with the raised detents then moving slightly forward and being arrested by a pin 527<a> on the rack. On return of the rack, the released slides move forward through the space of a tooth. If two or more reciprocations are imparted to the rack, the slides move forward the space of two or more teeth. The step-by-step movements of the slides across the strip bring the punches 521 into position for making perforations to increase the spaces by one, two, three &c. units. In the case of an over-set line, a plate 485, Fig. 18, mounted on the slide 484, is moved over a number of slides 520 equal to the number of excess units. A short stroke of the hand-lever 400 then causes the plate 485 to be raised by a pin 567 in the path of the rack 407. The plate 485, in rising, releases a number of slides 420 by engaging lugs 565 on the detents 526 and the released slides move to the extreme forward position and bring the punches 521 into position for making perforations to decrease the spaces by one unit. In the case of both under-set and over-set lines, operation of the line-closing key causes the punch-bar 540 to be operated and the units-bar 300 to be returned to the zero position. During the rotation of the shaft 546, a cam 576 rocks a lever 574 arranged to move the pinion 560 axially and thereby release the rack 561, a spring drum 570 then returning the rack to the normal position. The lever 574 is secured to a shaft 573, Fig. 9, provided with a bail 571, for returning the slides 520. The shaft 573 also operates a lever 579 arranged to release the escapement and permit of feed of the strip to present a blank part to the punches.