GB204793A - Improvements in line spacing mechanism for typewriting machines - Google Patents

Improvements in line spacing mechanism for typewriting machines

Info

Publication number
GB204793A
GB204793A GB19049/22A GB1904922A GB204793A GB 204793 A GB204793 A GB 204793A GB 19049/22 A GB19049/22 A GB 19049/22A GB 1904922 A GB1904922 A GB 1904922A GB 204793 A GB204793 A GB 204793A
Authority
GB
United Kingdom
Prior art keywords
lever
spacing
pawl
wheel
line
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
GB19049/22A
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.)
CORONA TYPEWRITER CO Inc
Original Assignee
CORONA TYPEWRITER CO Inc
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
Priority to US398109A priority Critical patent/US1424841A/en
Priority claimed from US398109A external-priority patent/US1424841A/en
Application filed by CORONA TYPEWRITER CO Inc filed Critical CORONA TYPEWRITER CO Inc
Priority to GB19049/22A priority patent/GB204793A/en
Priority to DEC32404D priority patent/DE417577C/en
Publication of GB204793A publication Critical patent/GB204793A/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
    • B41J19/76—Line-spacing mechanisms
    • B41J19/78—Positive-feed mechanisms
    • B41J19/80—Pawl-and-ratchet mechanisms
    • B41J19/82—Pawl-and-ratchet mechanisms moving a paper or like carriage
    • B41J19/84—Pawl-and-ratchet mechanisms moving a paper or like carriage in the form of a roller rotated for line spacing

Landscapes

  • Common Mechanisms (AREA)

Abstract

204,793. Marks, E. C. R., (Corona Typewriter Co., Inc.). July 11, 1922. Line-spacing mechanism.-A line-spacing lever, mounted to slide and rock on an axis transverse to that of the platen, is provided with a spacing- pawl and an overthrow-preventing pawl which are spaced axially and co-operate with different teeth on the line-spacing wheel. A U-shaped linespacing lever 17, formed with a finger-piece 16a, a spacing-pawl 20, and an overthrow-preventing pawl 35, can slide and rock on a pin 15 supported by a bracket 8 on the carriage 1, the pawls cooperating with a ratchet-wheel 5 on the platen 4. The initial axial position of the lever 17 is adjusted to vary the line-spacing by means of a stop-piece 24 pivoted on a lug 26 on the bracket 8 and formed with stop-faces 27, 28 for single and double spacing respectively. The stop-piece is retained by a friction-washer 31 and is formed with a projection 29 which abuts on a projection 30 of the lug 26 when the face 27 is in position. On rocking the lever 17, the pawl 20 moves into engagement with and rotates the ratchet-wheel, the movement being arrested by engagement of the pawl 35 with the long face of one of the teeth on the ratchet-wheel. The lever 17 has a uniform rocking movement, and a variable axial movement. A spring 22 returns the lever 17 to the initial position, the rocking movement being limited by engagement of a finger 21 on the lever with the end plate 2 of the carriage.
GB19049/22A 1920-07-22 1922-07-11 Improvements in line spacing mechanism for typewriting machines Expired GB204793A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US398109A US1424841A (en) 1920-07-22 1920-07-22 Typewriting machine
GB19049/22A GB204793A (en) 1920-07-22 1922-07-11 Improvements in line spacing mechanism for typewriting machines
DEC32404D DE417577C (en) 1920-07-22 1922-07-28 Line switching device for typewriters with swing-out lever

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US398109A US1424841A (en) 1920-07-22 1920-07-22 Typewriting machine
GB19049/22A GB204793A (en) 1920-07-22 1922-07-11 Improvements in line spacing mechanism for typewriting machines

Publications (1)

Publication Number Publication Date
GB204793A true GB204793A (en) 1923-10-11

Family

ID=26253798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19049/22A Expired GB204793A (en) 1920-07-22 1922-07-11 Improvements in line spacing mechanism for typewriting machines

Country Status (1)

Country Link
GB (1) GB204793A (en)

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