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GB504774A - Improvements in or relating to typewriting machines - Google Patents

Improvements in or relating to typewriting machines

Info

Publication number
GB504774A
GB504774A GB12585/38A GB1258538A GB504774A GB 504774 A GB504774 A GB 504774A GB 12585/38 A GB12585/38 A GB 12585/38A GB 1258538 A GB1258538 A GB 1258538A GB 504774 A GB504774 A GB 504774A
Authority
GB
United Kingdom
Prior art keywords
relating
typewriting machines
typewriting
machines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB12585/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB504774A publication Critical patent/GB504774A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J19/00—Character- or line-spacing mechanisms
    • B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
    • B41J19/20—Positive-feed character-spacing mechanisms
    • B41J19/32—Differential or variable-spacing arrangements
GB12585/38A 1937-06-15 1938-04-27 Improvements in or relating to typewriting machines Expired GB504774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US148270A US2224766A (en) 1937-06-15 1937-06-15 Typewriting machine

Publications (1)

Publication Number Publication Date
GB504774A true GB504774A (en) 1939-05-01

Family

ID=22525040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12585/38A Expired GB504774A (en) 1937-06-15 1938-04-27 Improvements in or relating to typewriting machines

Country Status (5)

Country Link
US (1) US2224766A (en)
BE (1) BE428467A (en)
CH (1) CH205194A (en)
FR (1) FR839227A (en)
GB (1) GB504774A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734614A (en) * 1956-02-14 Proportional ribbon feed mechanism
US2435933A (en) * 1942-02-20 1948-02-10 Rock Ola Mfg Corp Coin control and credit register mechanism
US2477702A (en) * 1944-07-08 1949-08-02 Coxhead Ralph C Corp Backspacing mechanism
US2527213A (en) * 1947-04-24 1950-10-24 Royal Typewriter Co Inc Variable spacing mechanism for typewriting or like machines
DE969421C (en) * 1951-03-08 1958-05-29 Adlerwerke Kleyer Ag H Full-text booking engine
US2697502A (en) * 1951-12-15 1954-12-21 Underwood Corp Uniform impression typing mechanism
US2862595A (en) * 1954-10-18 1958-12-02 Underwood Corp Proportional letter-feed mechanism for typewriters or the like
US2788881A (en) * 1955-01-06 1957-04-16 Ibm Justifier indicator
US2811235A (en) * 1955-11-10 1957-10-29 Underwood Corp Machine for typing a tape record and a proof sheet simultaneously
US2905307A (en) * 1957-03-29 1959-09-22 Hazeltine Research Inc Typewriter carriage position indicator
US2930471A (en) * 1957-12-17 1960-03-29 Sperry Rand Corp Automatic position indicator
US3444979A (en) * 1965-06-09 1969-05-20 Olivetti & Co Spa Ribbon feeding device for a variable spacing typewriter
US3401783A (en) * 1965-12-30 1968-09-17 Ibm Proportional ribbon feed mechanism

Also Published As

Publication number Publication date
CH205194A (en) 1939-06-15
US2224766A (en) 1940-12-10
FR839227A (en) 1939-03-29
BE428467A (en)

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