Patent GB-793982-A (GB)
Title: Improvements in or relating to means for typing, verifying and printing
Filed: 1955-12-16
Abstract: 793,982. Typewriters. SPERRY RAND CORPORATION. Dec. 16, 1955 [Dec. 20, 1954], No. 36131/55. Class 100(4) A combined decoding and encoding device which may be used as a poweroperated typer, verifier or printer has a typewriter for printing data from a recorded code applied to a tape or card, a device for reading the code and aliging serrations on parallel slides in accordance with the code, selector bars transverse to the slides capable of being moved into channels formed by selective alignments of the serrations, and type bars associated with the selector bars capable of being actuated when their associated selector bars move into the aligned serrations. The selector bars are reciprocated by a cyclically operating single revolution clutch and a magnet controlled by the reading device so that one moves into the aligned serrations. Pin carriers capable of engaging the serrations of the slides may render the serrated slides immobile. The slides are arranged in upper and lower case groups which are selectively positioned by a key controlled device. A blocking device may prevent operation of the typewriter in the absence of a selection. On depression of a " typer " key 147, Figs. 1, 2, 5, 7, switch 190, Figs. 5, 11, is closed and its stem 151, Figs. 5, 11, is latched by a spring 153, Figs. 5, 7. A switch 279, Figs. 3, 11, in keyboard 40, Fig. 3, is set in open circuit position and operation of any character key will close switch 92, Fig. 11, to complete circuits from line 270 to magnets 139 through contacts 220 of switch 225 and lines 273. Switches 146, which are closed by movement of the lower case parallel code slides 127, complete circuits 271, 275 to operates a punch 50, Fig. 11. A tape is fed by a spring-urged pawl operated by a magnet 262, Fig. 11, in a circuit 270, 274, 275 closed by switch contact 80, on each operation of a universal bar 26, Figs. 1, 11, which controls carriage feed in letter space direction. The machine is set .in usual manner for single case shift, unshift and case shift lock and a symbol is entered on tape for each condition when shift key is held down, for printing upper case characters, stud 217 closing switch 140 and lead 285. A switch 287, 286, 285, Fig. 11, actuates code bar shift magnet 135, Fig. 8. When a character is printed, bar 26, Figs. 1, 11, closes contact 80, Fig. 1; to complete circuit through line spacing means 262 via line 270, 274, 286, 275, Fig. 11. The code bars are shifted back to lower case by a spring 130, Fig. 8, when operator releases "shift" key, the stud 217 breaking circuit of magnet 135. When the machine is to print under automatic control from a reading unit 57, Fig. 11, "printer" key 207, Fig. 7, is latched down to open switch contact 220, Fig. 1, through bar 214, and to close contacts 216, Fig. 11, to energize magnet 139 corresponding to the character sensed, through circuit 272, 273 from line 270 and reader 57, and move code bars 127. Relay 281, Fig. 11, is activated through line 282, switch 79 and return 286, 275 to close switch 283 and operate clutch magnet 123, Figs. 1, 2. Operation of clutch detent armature 122, Figs. 1, 2. releases selector bars 79, Figs. 1, 11, so that key levers can be operated by hook links 61, Fig. 2. Operation of bar 26, Figs: 1, 11, opens contact 79 of switch 78 and causes tape feeding magnet means 262.to operate by closing contact 80. Fig. 1, of switch 78. A detent slide link 183, Fig. 5; keeps switch 92, Figs. 1. 2, open as the type keys are operated: For automatic, case shift operation of the machine under control of symbols in tape, the code slides are adjusted by corresponding magnets 139, Figs. 2, 5, 11, so that a single shift selector bar 59S, Fig. 11, can be operated to set the machine for "single shift" and "shift lock" through hook links 61S. 61L, Fig. 9. respectively. Operation of bars 59S, Figs. 8, 9, 11, causes stud 217. Fig. 11, to close circuit 270, 274, 286, 275 through segment shift magnet 277, Fig. 9, and code bar shift magnet close circuit 270, 274, 286, 135, Fig. 8, to energize 135, Fig. 8, to energize tape feed means 262 by switch 289, Fig. 11, so that next character can be sensed by the reader. When the character sensed is printed, bar 26 breaks shift circuit and machine continues in operation. When shift lock signal is read, selector bar 59L, Figs. 8, 9, 11. following the operation of a clutch 114, Fig. 2, pulls down hook 61L to cause case shift, and also to close switch 276. Fig. 11, to actuate relay magnet 290 in circuit containing switch 269. Magnet 290 closes relay contacts 292, 293 so that contact 292 holds magnet 290 energized after switch 276 opens, and contact 293 holds segment down and upper case set of code bars raised for extended upper case printing. When "unshift" signal is detected, switch 269 is opened by bar 59U to condition for lower case printing when tape feeding means 262 is activated by operation of make-before-break switch 289 in circuit 270, 274, 286, 275. "Verify" key 196, Fig. 1, is latched down and "typer" key 147 held depressed to condition the machine for " verify operation ". Contacts 216, Fig. 11, are closed, switch 92 remaining open, and circuits 270, 272, 280 operate as a reader. Pins 176, Figs. 1, 10, push bars 59 down and code slides 127 are adjusted by magnets 139, Fig. 11, so that the bars 59 which correspond with the character sensed, can be pushed down. The operation of the punch, when switches 146 are closed by slide 127, is prevented by end switch 220 which remains open. If an error is detected, the machine is conditioned for typing by latching down typer key 147, and tape is back-spaced by operation of key 40 to close switches 279, 295, Fig. 11, and complete circuit through back-space pawl 259. When correct character is typed a circuit 270, 297, 279, 99, lines 286, 275 and magnet 266, Fig. 11, is completed to release typer key. For verifying, the "verify" key 196 is set. In normal manual typing, typer key 147, Figs. 1, 2, 5, 7, is latched down to close switch 190 and switch 279, Fig. 5, is set manually to open circuit position, operation of any character key will close switch 92, Figs. 1, 2, 11, to complete circuits from line 270 to all the magnets 139 through closed contacts 220 of switch 225 and leads 273. Switches 146, Fig. 11, which are close by movement of slides 127, complete selected circuits to operate punch 50 A switch contact, closed upon each operation of universal bar 26, Fig. 11, conditions a spring urged pawl, by magnet 262 in circuit 270, 274, 275, to feed the tape. A shift key conditions the machine for single case shift and the machine is conditioned for unshift by operation of the same key when it is locked in case shift position. A key SL, Fig. 3, conditions the machine for case shift lock and causes a symbol to be entered on the tape for each condition. To print. "printer" key 207, Figs. 7, 11, is latched down and bar 214 opens switch contact 220 closes contact 216 so that leads 272, 273 from line 270 through reader 57 energizes magnets 139 to move the code bars 127. The machine mav be conditioned for "single shift" and "shift lock" through the hook links 61S, 61L respectively. To condition the machine to "verify", the key 196 is latched down and typer key 147 held depressed. Specification 375,359 [Group XXXI] and 665,179 [Group XIX], and 775,782 are referred to.