US3595362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter backspace and ribbon-field control
Assignee: Individual
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Filing: 1969-10-21
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Granted: 1971-07-27
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Expires: 1989-10-21
Abstract
Abstract A typewriter of the single-element (''''golf-ball'''') printing element-type, with laterally fixed paper support and a movable carrier for the single-element printing element, including means disposed at a fixed location on or near the keyboard for conveniently adjusting the vertical throw of the ribbon vibrator on the carrier, regardless of carrier movement, to select the color or kind of printing impression. The control means is interconnected with a pair of carrier back-spacing keys to facilitate automatic ribbon-field changes when a two-field ribbon of the error-correcting type is employed.
Inventors
- 👤 William H Wolowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:24
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/04; B41J35/10; B41J35/12; B41J35/14; B41J29/00; B41J29/26; B41J29/36
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
157 words
In a typewriter of the kind having a keyboard, a carrier translatable in the linewise direction across an impression sheet, a single-element character imprinting member mounted on said carrier, an impression ribbon vibrator mounted on said carrier, and a ribbon control on said carrier for adjusting the throw of said vibrator to select the ribbon field to be interposed between said imprinting member and the impression paper, the improvement which comprises: a. a rod mounted on said typewriter parallel to and adjacent the travel path of said carrier, b. said ribbon control having a terminal portion slidably engaging said rod, and c. manually operable means located in a fixed location relative to said keyboard, for altering the position of said rod through a limited range with reference to the travel path of said carrier, to allow adjustment of the throw of said ribbon vibrator without regard to the position occupied by said carrier in the linewise direction.
Claim 2
Dependent Claim
157 words
In a typewriter of the kind having a keyboard, a carrier translatable in the linewise direction across an impression sheet, a single-element character imprinting member mounted on said carrier, an impression ribbon vibrator mounted on said carrier, and a ribbon control on said carrier for adjusting the throw of said vibrator to select the ribbon field to be interposed between said imprinting member and the impression paper, the improvement which comprises: a. a rod mounted on said typewriter parallel to and adjacent the travel path of said carrier, b. said ribbon control having a terminal portion slidably engaging said rod, and c. manually operable means located in a fixed location relative to said keyboard, for altering the position of said rod through a limited range with reference to the travel path of said carrier, to allow adjustment of the throw of said ribbon vibrator without regard to the position occupied by said carrier in the linewise direction.
Claim 3
Dependent Claim
23 words
A typewriter in accordance with claim 1, in which said manually operable means comprises at least one keylever forming part of said keyboard.
Claim 4
Dependent Claim
34 words
A typewriter in accordance with claim 1, in which said manually operable means comprises a pair of interrelated keylevers adapted to move said rod toward the respective opposite limits of its range of positions.
Claim 5
Dependent Claim
26 words
A typewriter in accordance with claim 3 including backspacing means for said carrier, and in which said keylevers are both connected to operate said backspacing means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |