CA1014504A - Half backspace for dual pitch typewriter - Google Patents

Half backspace for dual pitch typewriter

Info

Publication number
CA1014504A
CA1014504A CA211,472A CA211472A CA1014504A CA 1014504 A CA1014504 A CA 1014504A CA 211472 A CA211472 A CA 211472A CA 1014504 A CA1014504 A CA 1014504A
Authority
CA
Canada
Prior art keywords
backspace
typewriter
dual pitch
pitch
dual
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
CA211,472A
Other languages
English (en)
Other versions
CA211472S (en
Inventor
John G. Gibbons
Raymond M. Marowski
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
Application granted granted Critical
Publication of CA1014504A publication Critical patent/CA1014504A/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
    • B41J19/60—Auxiliary feed or adjustment devices
    • B41J19/62—Auxiliary feed or adjustment devices for back spacing
    • 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
    • B41J19/34—Escapement-feed character-spacing mechanisms
    • B41J19/58—Differential or variable-spacing arrangements
CA211,472A 1973-11-23 1974-10-16 Half backspace for dual pitch typewriter Expired CA1014504A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US418349A US3893561A (en) 1973-11-23 1973-11-23 Half backspace for dual pitch typewriter

Publications (1)

Publication Number Publication Date
CA1014504A true CA1014504A (en) 1977-07-26

Family

ID=23657750

Family Applications (1)

Application Number Title Priority Date Filing Date
CA211,472A Expired CA1014504A (en) 1973-11-23 1974-10-16 Half backspace for dual pitch typewriter

Country Status (8)

Country Link
US (1) US3893561A (de)
JP (1) JPS544289B2 (de)
CA (1) CA1014504A (de)
CH (1) CH575299A5 (de)
DE (1) DE2455580C3 (de)
FR (1) FR2252221B1 (de)
GB (1) GB1436516A (de)
IT (1) IT1022789B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4031994A (en) * 1975-12-24 1977-06-28 International Business Machines Corporation Double tab rack for a typewriter
US4229111A (en) * 1978-11-13 1980-10-21 Schacht Roy A Feed mechanism for marking machine
US4322173A (en) * 1978-11-13 1982-03-30 Schacht Roy A Half-spacing feed mechanism for marking machine
US4285605A (en) * 1979-07-02 1981-08-25 International Business Machines Corporation Escapement mechanism and backspace mechanism for a moving paper carriage typewriter having dual pitch capability
US4383776A (en) * 1981-01-13 1983-05-17 Rozas Luis A V Typewriter with carriage escape bar adjustment
US4408918A (en) * 1981-05-01 1983-10-11 Scm Corporation Halfspace control system for electronic typewriter with correction register

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1183056A (en) * 1916-02-16 1916-05-16 Edward M Wiley Type-writer half-spacing key.
US2065629A (en) * 1934-07-23 1936-12-29 Underwood Elliott Fisher Co Typewriting machine
US2162565A (en) * 1935-06-07 1939-06-13 Frank G Cain Line justification method and means for typewriting machines
NL134493C (de) * 1963-09-25
US3366215A (en) * 1965-07-28 1968-01-30 Ibm Single rack backspace
BE710078A (de) * 1967-02-06 1968-05-30
US3540565A (en) * 1968-01-09 1970-11-17 Ibm Universal tab member
US3547245A (en) * 1968-01-09 1970-12-15 Ibm Multiple pitch margin control
US3713524A (en) * 1970-06-30 1973-01-30 Ibm Bi directional spacing mechanism for a printer including a proportional spacing printer

Also Published As

Publication number Publication date
FR2252221A1 (de) 1975-06-20
US3893561A (en) 1975-07-08
GB1436516A (en) 1976-05-19
DE2455580C3 (de) 1980-08-21
CH575299A5 (de) 1976-05-14
DE2455580A1 (de) 1975-05-28
JPS5085415A (de) 1975-07-10
FR2252221B1 (de) 1982-12-17
JPS544289B2 (de) 1979-03-05
IT1022789B (it) 1978-04-20
DE2455580B2 (de) 1979-12-13

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