US3572489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter with extended writing line
Assignee: International Business Machines Corp
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Filing: 1968-11-08
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Granted: 1971-03-30
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Expires: 1988-11-08
Abstract
Abstract The writing line of a moving print element typewriter is extended beyond the typewriter side frame by employing a long paper carriage and effecting conjoint opposite direction movement of the paper carriage of a print element carrier. Absolute movement of the paper carriage and the print element carrier is thus less in each case than the length of the writing line. A mechanical interconnection is employed to allow control over both movements to be obtained by controlling the movement of the print element carrier. Movement of the print position between adjacent letters is accomplished by moving the print element two-thirds of a letter space to the right and simultaneously moving the paper one-third of a letter space to the left to minimize the effective inertial loads on the system.
Inventors
- 👤 John O Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/18; B41J19/20; B41J1/00; B41J1/60
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
201 words
A typewriter having a frame, character defining means, and paper holding means cooperable therewith to mutually define a printing position; first track means carried by said frame and supporting said character defining means for movement along a first rectilinear path, and second track means carried by said frame adjacent said first track means supporting said paper holding means for movement along a second rectilinear path that is parallel to said first path, whereby said printing position can be displaced to define a writing line and wherein the improvement comprises: motion transmitting means interconnecting said character defining means and said paper holding means comprising means for transmitting motion therebetween for effecting conjoint, oppositely directed movement of said character defining means and said paper holding means along their respective paths; a shaft rotatably mounted on said frame, means for selectively driving said shaft in either rotational direction; a first one-way power transmitting connection between said shaft and said character defining means for transmitting displacement force thereto upon rotation of said shaft in one direction; and a second one-way power transmitting connection between said shaft and said paper hOlding means for transmitting displacement force thereto upon rotation of said shaft in the other direction.
Claim 2
Dependent Claim
201 words
A typewriter having a frame, character defining means, and paper holding means cooperable therewith to mutually define a printing position; first track means carried by said frame and supporting said character defining means for movement along a first rectilinear path, and second track means carried by said frame adjacent said first track means supporting said paper holding means for movement along a second rectilinear path that is parallel to said first path, whereby said printing position can be displaced to define a writing line and wherein the improvement comprises: motion transmitting means interconnecting said character defining means and said paper holding means comprising means for transmitting motion therebetween for effecting conjoint, oppositely directed movement of said character defining means and said paper holding means along their respective paths; a shaft rotatably mounted on said frame, means for selectively driving said shaft in either rotational direction; a first one-way power transmitting connection between said shaft and said character defining means for transmitting displacement force thereto upon rotation of said shaft in one direction; and a second one-way power transmitting connection between said shaft and said paper hOlding means for transmitting displacement force thereto upon rotation of said shaft in the other direction.
Claim 3
Dependent Claim
158 words
A typewriter having a frame, relatively low mass character defining means, and relatively high mass paper holding means cooperable therewith to mutually define a printing position; first track means carried by said frame and supporting said character defining means for movement along a first rectilinear path, and second track means carried by said frame adjacent said first track means supporting said paper holding means for movement along a second rectilinear path that is parallel to said first path, whereby said printing position can be displaced to define a writing line and wherein the improvement comprises: motion transmitting means interconnecting said character defining means and said paper holding means for conjoint, oppositely directed movement along their respective paths, said motion transmitting means including motion transforming means for causing relatively greater movement of said character defining means than said paper holding means; and means for moving said character defining means and said paper holding means relative to said writing line.
Claim 4
Dependent Claim
158 words
A typewriter having a frame, relatively low mass character defining means, and relatively high mass paper holding means cooperable therewith to mutually define a printing position; first track means carried by said frame and supporting said character defining means for movement along a first rectilinear path, and second track means carried by said frame adjacent said first track means supporting said paper holding means for movement along a second rectilinear path that is parallel to said first path, whereby said printing position can be displaced to define a writing line and wherein the improvement comprises: motion transmitting means interconnecting said character defining means and said paper holding means for conjoint, oppositely directed movement along their respective paths, said motion transmitting means including motion transforming means for causing relatively greater movement of said character defining means than said paper holding means; and means for moving said character defining means and said paper holding means relative to said writing line.
Claim 5
Dependent Claim
95 words
A typewriter as defined in claim 2 wherein said means for moving said character defining means and said paper holding means comprises: a shaft rotatably mounted on said frame; means for selectively driving said shaft in either rotational direction; a first one-way power tr transmitting connection between said shaft and said character defining means for transmitting displacement force thereto upon rotation of said shaft in one direction; and a second one-way power transmitting connection between said shaft and said paper holding means for transmitting force thereto upon rotation of said shaft in the other direction.
Claim 6
Dependent Claim
81 words
A typewriter as defined in claim 3 wherein said selective driving means comprises impositive urging means continuously operable to urge said shaft in one direction and further comprising; elongated toothed rack means mounted on said frame; and pawl means cooperatively connected in a direct positional relationship with said character defining means and selectively engageable with said rack means to retain said character defining means in any of a plurality of spaced positions along said r rack means relative to said frame.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |