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Publication numberUS3924722 A
Publication typeGrant
Publication dateDec 9, 1975
Filing dateFeb 27, 1973
Priority dateFeb 27, 1973
Publication numberUS 3924722 A, US 3924722A, US-A-3924722, US3924722 A, US3924722A
InventorsWienhold James L
Original AssigneeCpt Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Typewriter with electronic keyboard
US 3924722 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent [191 Wienhold Dec. 9, 1975 TYPEWRITER WITH ELECTRONIC 21 Appl. No.: 336,240

[52] US. Cl 197/19; 178/175; 340/365 R [51] Int. Cl. 341.] 5/30 [58] Field of Search 197/16-17,

197/19, 20, 52, 63, 66, 70, 107, l B, 113, 98; 340/1725, 365 C; 178/175, 79, 81, 23 R, 34; 235/130 R, 132 E, 145 R, 145 A [56] References Cited UNITED STATES PATENTS 3,233,715 2/1966 Flicg 197/19 3,292,764 12/1966 Midgette et a1 197/20 X 3,414,103 12/1968 Knudsen et al. 197/20 3,453,387 7/1969 Bagley 178/l7.5 3,470,539 9/1969 Proud, Jr. et a1. [97/20 X 3,490,572 1/1970 Smith 197/66 X 3,493,928 2/1970 Juliusburger 172/23 R X 3,496,547 2/1970 Gorrill et al. 197/20 X 3,501,747 3/1970 Bungard et al. 197/20 X 3,530,976 9/1970 Higgason, Jr. et a1. 197/20 X 3,554,350 l/1971 Rolph 197/70 X 3,604,906 9/1971 Hunter et a] 178/175 X 3,624,612 11/1971 Hecker et al. 197/19 X 3,629,507 12/1971 Worrall 173/79 3,630,336 12/1971 Johnson et a1.... 197/19 3,643,773 2/1972 Holmes, Jr. 197/19 X 3,662,382 5/1972 Janis 197/107 X 3,665,115 5/1972 Snook 178/175 3,703,949 ll/l972 Howard et al. 197/19 X 3,739,344 6/1973 Serracch'ioli et al..... 197/19 X 3,757,920 9/1973 Wolf et al. 197/19 3,760,376 9/1973 Tanner 197/19 X OTHER PUBLICATIONS IBM Technical Disclosure Bulletin, Vol. 8, No. 11

Apr., 1966 Typewriter with Electronic Separation of input.

Primary ExaminerE. H. Eickholt Attorney, Agent, or Firm-Schroeder, Siegfried, Ryan & Vidas ABS IRACT The disclosure is directed to a modified IBM Selectric Typewriter which is driven through an electronic circuit and keyboard. The typewriter has electronic means for receiving signals and also for producing signals which are to be used in associated mechanisms such as being recorded on magnetic tape.

A diode matrix is used with switches to replace the rods and interposers and key levers. Through the use of a series of gates and electronic buffers, the signals are transposed from mechanical to electrical pulses and are eventually applied to a series of solenoid drivers which energize or actuate the solenoid drivers which energize or actuate the solenoids which are coupled to the tilt and rotate mechanism of the single element printer. Operational functions are also accomplished in a similar manner to complete functional operations of the typewriter.

In addition, the typewriter also includes means for actuation of the carriage assembly to return it to its initial or starting position without indexing the platen. The typewriter also includes an electrical means of stopping the carriage movement upon reaching the margin and accounting for the predetermined number of spaces by the carriage beyond the margin.

A timing mechanism is provided which times the print cycles so that additional input data may be put through the buffer stages for energizing the print mechanism upon completion of a print cycle in less time than the maximum alloted for the function.

Through the use of the three buffers, an operator may type a burst pattern and the buffers will properly store and print out the data in its proper sequence.

18 Claims, 29 Drawing Figures U.s. Patent Dec.9,1975 sheet lof 19 3,924,722

Sheet 2 of 19 3,924,722

U.S. Patent Dec. 9, 1975 Sheet 3 of 19 US. Patent Dec. 9, 1975 U.S. Patent Dec.9, 1975 Sheet4of 19 3,924,722

us. Patent Dec.9,1975 sheets 19 3,924,722

US. Patent 1166.9,1975 Shee t6of19 3,924,722

US. Patent Dec. 9, 1975 Sheet 7 of 19 3,924,722

US. Patent Dec. 9, 1975 Sheet8 01-19 3,924,722

U.S.Patent Dec.9, 1975 Sheet9of 19 3,924,722


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U.S.- Patent Dec. 9, 1975 MARGIN RELEASE TO LR sw 95:1


STROBE DISCRIMINATOR M m m N X l Zfi 4 6 T 8 D D W 2 w M D F 7 D B B B K BL B H D B K K K K K SB K K I B A K T A D B D K R R E BF YF EU KB 0 N I ii ii}! ail 025 025 Q25 Q25 0 Q 37 27 27 37 um HM Hm HE D C D C C D C D C D C D C D C LE 6 43 B6 474 3P5: B m m m a H m m u m m U.S. Patant Dec.9, 1975 Sheet 12 of 19 3,924,722

w mwhEDm x m 02 mp 50 U- A v mm 8 mm IGIO IO munEDm on IOIO la la US. Paient Dec.9, 1975 Sheet 14 of 19 3,924,722

+ 28 COM CR4 CRHII BACK SR 3 1. f CRIZ (32 ii 5 SOL CR5 CR5 LINE RET. 4 9 25 n-H {4 C" 4 39 R 4 SOL 7 C22 7 SOLENOID CLUTCH Q I I l"(-- CR6 CRIQ INDEX lib-F 24 o| H Q13 CR G 3 SOL 3 In W CR7 CR]? SPACE H u I 2\ 3| |5 L 33 2SOL J T 11 CR9 I cRzl CR SOL B 1 22 id. [33 Q|2 |s0| by 2| 9 CR4 cR|5 TAB SOL K Q8 R54 Q9 PRINT B V l R57 CR24 Q6 Q7 OPERATIONAL US. Patent Dec.9, 1975 Sheet 15 of 19 3,924,722




85 Sm 3m US. Patent Dec. 9, 1975 Sheet 19 of 19 3,924,722

I 5v UND CYCLE TIMING T.s. No SW 2 zsI i CYCLE I \I TIMING 73 9 c'ou. BLK



Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3233715 *Apr 20, 1964Feb 8, 1966Invac CorpTransmitter receiver machine employing print sphere typewriter structure
US3292764 *Jun 11, 1965Dec 20, 1966Harris Intertype CorpTypesetting systems
US3414103 *Mar 31, 1966Dec 3, 1968Epsco IncSignal responsive and signal generating means for single element print head typewriter
US3453387 *Oct 4, 1965Jul 1, 1969IbmData transmission system having delay line buffer storage
US3470539 *Jan 19, 1967Sep 30, 1969Harris Intertype CorpShift register control for typesetting machines
US3490572 *Oct 2, 1967Jan 20, 1970Singer CoPrint head carrier drive structure employing same clutch for carrier return and backspace
US3493928 *Jul 12, 1966Feb 3, 1970IbmElectronic keyboard terminal code checking system
US3496547 *Oct 12, 1965Feb 17, 1970American Chain & Cable CoControl system and printer controlled thereby
US3501747 *Jul 8, 1965Mar 17, 1970Intern Systems IncCode conversion system
US3530976 *Jul 11, 1969Sep 29, 1970Ludlow Typograph CoType justification apparatus
US3554350 *Oct 6, 1967Jan 12, 1971Singer CoTabulation and margin control structure
US3604906 *Sep 4, 1969Sep 14, 1971Burroughs CorpVerifier for signal controlled mechanism
US3624612 *Mar 11, 1968Nov 30, 1971Eichner Org GmbhMethod and system for controlling electric printout mechanisms
US3629507 *Nov 13, 1969Dec 21, 1971Scm CorpSolid-state line keyer
US3630336 *Apr 15, 1970Dec 28, 1971IbmProportional spacing printer incorporating word underscore control
US3643773 *Jun 16, 1969Feb 22, 1972Holmes Lawrence JrCycle inhibitor for an electrical typewriter
US3662382 *Nov 9, 1970May 9, 1972Camera And Instr CorpKeyboard controlled electrical code-signal generator system
US3665115 *Feb 18, 1970May 23, 1972Diginetics IncStenographic apparatus providing a magnetically recorded digitally encoded record
US3703949 *May 7, 1970Nov 28, 1972Centronics Data ComputerHigh-speed printer
US3739344 *Jun 29, 1970Jun 12, 1973Olivetti & Co SpaData terminal apparatus having a device for aligning printed data
US3757920 *Dec 17, 1971Sep 11, 1973Redactron CorpElectric typewriter with input-output arrangement
US3760376 *Dec 28, 1970Sep 18, 1973IbmSystem for controlling output lines with limited storage capacity
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4096935 *Aug 12, 1976Jun 27, 1978Canon Kabushiki KaishaInput device
US4253774 *Jun 30, 1978Mar 3, 1981Canon Kabushiki KaishaInformation output device
US4600319 *Jun 6, 1985Jul 15, 1986The United States Of America As Represented By The Secretary Of The ArmyControl for dot matrix printers operating in harsh environments
US4804278 *Jun 26, 1987Feb 14, 1989Canon Kabushiki KaishaKey input apparatus provided with a key input buffer
US5322376 *Dec 17, 1990Jun 21, 1994Canon Kabushiki KaishiSerial printing apparatus including an error correcting capability and having a memory
US5331508 *Nov 5, 1993Jul 19, 1994Kabushiki Kaisha ToshibaPortable electronic apparatus having a removable keyboard unit
US5484214 *Jun 30, 1992Jan 16, 1996Canon Kabushiki KaishaSerial printing apparatus including an error correcting capability and having a memory
US5529406 *Aug 30, 1994Jun 25, 1996Canon Kabushiki KaishaDocument processing apparatus and method for printing a document read out of a memory
US5562355 *Apr 29, 1994Oct 8, 1996Canon Kabushiki KaishaSerial printing apparatus with sentence memory and display having correcting means
US5690435 *Feb 8, 1994Nov 25, 1997Canon Kabushiki KaishaSerial printing apparatus with sentence memory and display
US6040788 *Jan 21, 1998Mar 21, 2000Vlsi Technology, Inc.Cache based scan matrix keyboard controller
US6615720 *Sep 18, 2001Sep 9, 2003Dn Craft CorporationBrayer ball
U.S. Classification400/62, 178/17.5, 400/666, 400/52, 341/22, 400/184
International ClassificationB41J3/44
Cooperative ClassificationB41J3/44
European ClassificationB41J3/44