Patent GB-719372-A (GB)
Title: Improvements in or relating to keyboard controlled mechanisms for use in the production of lines or patterns of typographical and like matter
IPC: B41B27/10
Filed: 1950-06-05
Abstract: 719,372. Type-making machines. CLOWES & SON, Ltd., W., and CROUCHER, H. G. June 1, 1951 [June 5, 1950], No. 13962/50. Class 100 (3). Strip-perforating machines; justifying type; keyboards.-Keyboard - controlled mechanism producing record-bearing means for use in the production of typographical and like matter is combined with means for causing reversed motion of the record-bearing means or strip over an appropriate distance upon the completion of records or perforations corresponding to a line of characters so that the records which determine the character spacing in such line can be positioned in advance of the records of characters constituting the line, and means for subsequently returning the record-bearing means or strip to a position for commencing the formation of records for the succeeding line. In this way, the records are produced in forward order from the beginning of the first line. The invention may be applied to controlling singletype composing machines of the kind described in Specification 8633/99, [Class 100], and to machines for producing type-faced impressions as described in Specification 706,312, and may be combined with sequence control apparatus as described in Specification 719,371. In the form described, the invention is applied to keyboard mechanism as described in Specification 17199/08, [Class 100], to produce a perforated strip for use in conjunction with said sequence control apparatus. In association with the known keyboard 71, Fig. 18, there is provided an additional keyboard 72 provided with special keys for producing the reversal displacement and replacement of the strip and producing the control perforations for the sequence control apparatus. Each key operates a key-bar which actuates one or more rockshafts, each actuating a valve bar which opens a valve, or linked to a rock-shaft of the keyboard 71 to cause perforations. Certain keys cause perforations and open valves. Certain valve bars have attachments which when operative operate key-bars of other keys. For example, " Sizing (5) " key actuates a key-bar to operate rock-shafts 300, 277, 271 which are linked to rock-shafts 300a, 277a, 271a of keyboard 71 to produce perforations G, M and 0005. Other keys which produce requisite combinations of perforations are " Sizing (4), (3) and (2), " Lead," " Lead delete," " Tower delete," (2), (3), (4) and (5), " Solid matter," " Repeat leading," " Stop," and " Tower Change " (2), (3), (4) and (5). The " Lead" key also through rock-shaft 281, lug 308a, valve-bar 308, valve 310, controls piston 495, Fig. 27. " Measure change " keys (2), (3), (4) and (5) control valves 286, 291, 296, 301 and thereby pistons 442, Fig. 27, while " Measure replacement " key controls piston 450. The " measure change " key valve bars 284, 289, 294, 299 also have attachments 284s, 289s, 294s, 299s, which when operative act on the key-bars of the " sizing " keys, so as to perform a double function. A " restoring " key operates piston 513, Fig. 27. The " single justification " key of the main keyboard produces perforation 0005, and the " double justification " key perforation 0075, while both together actuate the line counter, Fig. 19. A " reverse setting key operates piston 180, Fig. 5, and lifts the " O " punch, to prevent perforation. A " cancellation " key and the " DJ " key also have this effect, while the " cancellation " key lifts the " 15 " punch, to prevent perforation. The " reversal displacement " key operates valves 92, 93, 101, Fig. 2, while the " replacement " key operates valves 92, 100, 101, Fig. 2. The displacement and replacement mechanism is shown diagrammatically in Fig. 2, and comprises a valve chest 250 supplied with compressed air, a displacement rack 3 and replacement rack 4, the racks being coupled by pinions 5, 6 and clutches 11, 12 to the main strip feed-shaft. The movements of the racks are limited by stops 19, 20, adjusted by racks 43, 51. Operation of the " reversal displacement " key opens valves 92,93. Valve 92 operates piston 28 and rod 103 to release the strip feed mechanism, rod 103 being latched by latch 29. Valve 93 operates piston 30, which is then latched by latch 33, and rod 31, to close clutch 12 for rack 4. Rod 31 also opens valve 25 to move rack 3 to its stop 19, the strip being moved back to a position one space ahead of the beginning of the line. The rack acts on a lever 45 to release latch 29 and restore the feed, whereupon the " SJ " key makes the " SJ " perforation and moves the strip one strip further back for reception of the " DJ " perforation. Lever 45 also releases a latch 49 to open clutch 11, and a latch 50, whereupon stop 20 is set. Rod 31 also releases latch 42, whereupon stop 19 is set, and latch 151 to allow valve 101 to close. Operation of the " replacement " key opens valves 92, 100, 101. Valve 92 disconnects the feed as before. Valve 100 operates piston 34, which is latched by latch 42, to set stop 19 to zero position. Valve 101, which is latched by latch 151, moves rack 4 to its stop 20. Rack 4 also strikes a lever 53 to open valve 26, which operates piston 35 to close clutch 11, which is latched by latch 49, to release latch 33 and open clutch 12, and to open valve 27, which operates piston 36, which is then latched by latch 50, to set stop 20 to zero position, and to release latch 29. The .strip is thus returned ready for the next line. An apparatus for carrying out the principles illustrated diagrammatically in Fig. 2 is shown in Figs. 5, 6 and 8. Paper strip 77 is placed in a guide 75, passes over a tension-rod 78, auxiliary drive-shaft 80, main feed shaft 82, shaft 84, and to a winder spool. Shaft 82 drives shafts 80, 84. A displaceable roller 88 running in slots 89 produces a loop when the strip is moved back. The winder spool is driven by ratchet 64b, having a feed-pawl 64d and retaining-pawl 64e, and is also driven from the replacement rack through pinion 6. A gear 87 on shaft 82 is latchable by a dog-tooth device 64q operated by a three-armed lever 64r operated by piston 28 and rod 103. A claw 111 on lever 64r is held by latch 29 to hold the strip feed out of engagement. Lever 64r is connected by a slotted link 108 to a lever 109 secured to a shaft 110 carrying a lever 112 connected to a vertically slidable release plate 113 for the ratchet mechanism driving shaft 82. The plate 113 has two cam slots engaging pins 115 attached to feed pawls 116 normally engaging a forward feed ratchet 117 on shaft 82, and two further slots engaging pins 119 attached to pawls 120 normally withdrawn from a reverse feed ratchet 121. The plate 113 is connected by a link 113a to a release bar 123 for pawls 64d, 64e. The lever 64r has an arm 357 attached to the punch bar locking rack 342, which is locked when moved to the left. Piston 30 operates an arm 31, and thereby through beam 131, shaft 133, control lever 134 having projection 135, and rod 135a, engages the clutch 12 for the replacement rack. An arm 137 is engaged by a latch 33 to hold the clutch 12 engaged. The lever 134 has an arm 140 having an adjustable abutment 145 which releases latch 42 holding piston 34. The beam 131 has an arm 146 connected to a lever 148 to release latch 151 and allow valve 101 to close. Lever 148 also opens valve 25 to move the displacement rack and move the strip backwards. Movement of the rack releases latch 50, and also by means of bell-crank 160, latch arm 161, lever 163, rod 165 and bell-crank 166 opens clutch 11 for the displacement rack. A further linkage rotates a cam-plate having a series of humps to depress a roller on the arm of latch 29, thus re-engaging the dog tooth member 64q with gear 87 and unlocking rack 342, lowering release plate 113 to engage pawls 116 with ratchet 117, a loop having been formed in the strip by roller 88. When now the " SJ," " reverse setting " or " cancellation " key is depressed, a piston 180 is operated to move to the left a feed frame 182, Figs. 5 and 8, carrying a feed-plate 185. Normally, the main feed-rod 188 raised by known mechanism raises pawl lever 190 so that ratchet 64b is advanced as the feed rod returns, in the usual feeding operation. If piston 180 is operated, the pawls 116 are disengaged and the reverse pawls 120 engaged. Also a claw 194 engages a latch 195 to hold the frame 182 displaced. The latch is released by a projection 198 on a link 199 on lever 187 actuated by feedrod 188. For re-winding, the " replacement " key is depressed, and piston 28, lever 64r, dog tooth member 64q are operated as before, to release the strip. Piston 34 actuates rack 43 to advance stop 19 to zero position. The replacement rack is moved against stop 20, the return movement of the strip being greater than the withdrawal movement by three steps, leaving blank spaces for the subsequent justification perforations. The rack engages an arm connected to lever 210, and thereby through shaft 211, lever 212, and rod 213 opens valve 26 to operate cylinder 35. Cylinder 35 acts through beam 215, shaft 216, control lever 217 having projection 218, lever 163 and rod 165 to engage clutch 11, also through lever 222 and rod 223 to release latch 33 and open clutch 12, also through arm 225 and rod 226 to open valve 27, and operate piston 36, which actuates rack 51 to move stop 20 to zero position. Piston 36 also acts on the cam-plate to release latch 29 and re-engage the paper feed. On depressing the first key for the next line, frame 182 is released. Line counter. The line counter 328, Fig. 19, is actuated when both " SJ " and "'DJ " keys are operated together, by means of a pivoted lever 324. Punch lock. After a predetermined number of lines, counter arm 333 moves rod 336 and crank 337 to lock rack 342. For starting a new line, the " restoring " key drives the em rack 344 against a stop, and by means of a pin 346, lever 347, cable 349, latch 352 and lever 353, the rack 342 is released, having been locked by the " reversin