Patent GB-190712476-A (GB)
Title: Improvements in Machines for Making Mechanical Controllers for Composing Machines.
Inventor: LOCK WILLIAM HENRY
Filed: 1907-05-29
Granted: 1908-06-29
Abstract: 12,476. Lock, W., H., and White, W. G., [Tachytype Manufacturing Co., partly]. May 29. Monotype and like machines; typewriters and like machines.- Relates to the record-strip perforator described in Specification No. 5718, A.D. 1895. (1) The longitudinal rows of perforations in the strip are wider apart than in the strip described in the prior Specification, and the trip perforations e, Fig. 32, and the galley perforations f are disposed along the middle of the strip between the character perforations b, c, instead of adjacent to the feed perforations a at the sides. The printed record g is disposed between the perforations e, f. (2) The pricker feed-roller 6, Fig. 53, extends across the width of the strip, instead of being formed of two end disks, and co-operates with a roller 1 held up by springs 7. A curved guide 8 directs the strip between the rollers 1, 6. The roller 6 is retained by a spring detent 9 and advanced by a spring pawl and a nose on a slide 11, but the nose on the slide is normally clear of the ratchet-wheel 12 on the roller 6, so that this roller is free to be advanced by hand. The strip is traversed through the justifier by mechanism substantially identical with that described in the prior Specification ; the pawl slide is held up by a pivoted detent controlled by a bell-crank lever held up to a cam on the justifier shaft. The strip is delivered from the machine over pricker disks to a winding- reel. The pricker disks are on a shaft actuated by pawl-and-ratchet mechanism and connected to the winding-reel by V-grooved pulleys and a wire cord, which stretches and slips over the reel pulley as the diameter of the roll increases. A re-winding reel, driven at high speed from the driving-pulley 28, is provided for reversing the roll from the winding- reel, the wire cord' of which serves as a brake when re-winding. (3) The parts of the driving- shaft 29, Fig. 53, and 38, Fig. 25, on opposite sides of the clutch are parallel instead of alined, the driving-part 29 being geared to a ratchet clutch member co-operating with a pawl member 41 on the one-revolution part 38, which forms the cam shaft of the machine. A hand-operated clutch is provided between the pulley 28 and the part 29. The pawl 41 is retracted by a cam 130 on a spring- retained pivoted arm 127, and comes to rest against a stop 129 on the arm 127, its revolution being completed by the action of a spring 131. The arm 127 is lifted, to release the pawl 41, by means of a push-rod 126 on a lever 125 actuated by a lever 123 connected with a bell-crank lever on a shaft 13<a>, Fig. 11, of a bail 12<a> of the keyboard mechanism. (4) The character key-levers 48, Fig. 11, are pivoted on a rod 49 and raise spring-depressed bars 52, each provided with three pins 61, 62, 63 under purmutation bars 64, 65, 66, and, for change of fount, a second set of pins 75, 76, 77 co-operable with permutation bars 72, 73, 74 when the bars 52 are shifted by means of a cross-bar 80 and key 71. The levers 48 operate the bars 52 by means of a shoulder 55, lever 56, and lug 58 at the front end, and shoulders 59, 60 at the rear end. The permutation bars are provided at the ends with parallelmotion linkage, and engage bell-crank levers 2<a> connected with slides 6<a> provided with noses 9<a> to advance intermediate pins for setting wheel-pins 149<a>, 150<a>, 151<a>, Fig: 53. The intermediate pins are automatically retracted by a cam-actuated bail, and as the noses 9<a> might not be retracted in time, the plane of the return path of the pins is changed by a lifting-bail ; a comb spring bears on the front ends of the pins to prevent rebound. The bail 12a for closing the main clutch is retracted by a spring 15<a> and advanced by shoulders 11<a> on the slides 6<a>, and returns the latter, but is first locked in the advanced position by means of a rack 111 and a spring pawl 112. The pawl 112 is automatically released by a finger on the bail which lifts the intermediate pins, and the pawl is held up until the slides 6<a> have returned, by engagement of a spring 114<a>, connected with the bail 12<a>, in a notch in the end 112<a> of the pawl. The operator can release the pawl by means of a key 117. In order to prevent the depression of a second key before return of the slides 6<a>, lugs 16<a> on the operated slides enter between series of locking-levers 106. The key box and its parts are detachable from the base. (5) The co-ordinate wheels 139, 140, 141, Fig. 53, are driven through their peripheries by a rack 138 actuated from the shaft 38, Fig. 25, through connexions including a connecting-rod 132 and a crank with a slot for lost motion to coincide with the lifting and retraction of the intermediate pins, which operations are effected by cams on the shaft carrying this crank. Accurate return of the co-ordinate wheels to normal position is ensured by the connexion to one wheel 139 of linkage 142, 143 controlled by a spring and a stop 145. The co-ordinate wheels and their gearing are in recesses in the standard 5. The wheel-pins 149<a>, 150<a>, 151<a> co-operate with yokes 146, 147, 148 geared to racks 161, 167, 172 bearing carriers 175, 176, 177. Fig. 54, for the punch interponents 178, 179, 180. The wheel-pins are returned and the yokes locked in normal position by plates 196, Fig. 42, adapted to pass through the yoke slots and carried by arms 197 loose on a rock-shaft 198. The arms 197 are operated in the one direction by pins on arms 199 fast on the rock-shaft, and in the other direction by the wheel-pins. The shaft 198 is actuated by a cam 43 on the shaft 38 through a finger 201 pivoted on an arm 200, and is returned by a spring 204. Spring clips 203 prevent rebound of the parts 197. The wheel-pins may be returned at any time by means of a key with connexions adapted to engage one of the arms 199. The punch interponents are guided by prolongations 181, Fig. 54, engaging in grooves in the top bars 182 of the striker frame 183. The punches 192<a> are provided with shoulders 192 co-operating with a fixed stop 189 and a returning-bar 190 fast to the striker frame. The punches for the feed perforations are fast to the bar 190. (6) The units are transmitted from the yoke 146, Fig. 53, to a recording-wheel 267<a> by a spring pawl 268<a>, overthrow of which is prevented by an incline 270<a>, shoulder 271<a>, and stops 272. The wheel 267<a> is retained by a detent 304 and is carried by a spring- tensioned shaft provided with a finger moving over a dial 276. From the wheel 267<a>, the record is taken to a shaft 291 through a finger on the wheel, a block on a sector 278 loose on the hub of the wheel, and a double rack 288, 289. The finger on the wheel is carried by a pivoted arm connected to a nut, which is carried round with the wheel and travels along a screw-threaded sleeve provided with an index plate 293 and a spring detent. The block is carried by an index plate 279 adjustable on the sector 278 and secured by a pawl 280. The double rack is provided with a stop 298 for holding up the bell clapper, which is raised by the justifier starting-key into engagement with a detent 302, ready to be re-engaged by the stop 298. The pawl 268<a> and the detent 304 are released, to allow the units counting mechanism to return to zero position, by means of a cam-actuated part 273, which carries the stops 272 and is connected by a link 305 to the detent 304. Zero position of the wheel 267<a> is ensured by gearing provided with stop arms. From the shaft 291, the record is taken to the justifier key-piece' 313<a>, Fig. 21, through a series of gears 315 and a rack 316. At each depression of the space-key, the key-piece' is advanced by a rack 323 actuated by a reciprocating pawl depressed into engagement with the rack 323 by a spring arm on a rock-shaft of the space-key connexions. In order to ensure actuation of the rack 323 in case of premature release of the space-key, an arm on the rock-shaft is engaged by a spring finger on the arm 197, Fig. 42. The key-piece ' is locked by engagement of studs 330, 333 on a sliding piece 329 in recesses in the key-piece' members 332, 316. The piece 329 is actuated by an elastic arm 327 depressed by a cam-actuated push-rod. The arm 327 also releases a detent 322 from the rack 323, so that the rack, which has a loose connexion 346 with the part 332, is retained by a spring 324. There is a clearance between the ends of the parts 323, 332, so that the key-piece' is not moved until the third space-key depression. The 'key- 'piece' is provided with twenty rows of keys j for adding one or more remainder units, a row k for no justification, and five rows l for subtracting one unit. The 'key-piece' shelf 315<a> is hinged on the bed-plate, which is hinged on the table. To prevent over-running of a line, the rack 316 engages a cam 336 on a spring-returned rock-shaft 337 provided with a detent for projection into the path of a pivoted bar on the bell-crank lever connected with the bail 12<a>, Fig. 11. Permissible over-running is allowed for by providing a switch to swing the pivoted bar clear of the detent, in which case the rows l of the 'key-piece' are brought into operation. The keyboard is locked during the action of the justifier, by a gravity latch engaging over a stud on the bell-crank lever connected with the bail 12<a>, but normally held up by the push-rod for the arm 327, Fig. 21. The justifier bracket is detachable and is open at the top, bottom, and sides. (7) The space-key 262, Fig. 11, besides actuating the rack 323, Fig. 21, also actuates a lever 263 for setting wheel - pins, and a rock-shaft 260, Fig. 54, connected to an interponent 267 for the trip punch 192<c>, and the interponent 267 is connected to a stop 270 for preventing movement of the interponent 178, the carrier 175 of which is loosely connected to its rack 161 for this purpose. To prevent over-running of the space-key, the shoulder 346, Fig. 21, of the slide 332 serves