US3927746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typing and correcting cartridge for single-element typewriters
Assignee: Individual
•
Filing: 1974-04-03
•
Granted: 1975-12-23
•
Expires: 1994-04-03
Abstract
Abstract A self-correcting cartridge for single-element typewriters having a movable carrier for the printing element, which cartridge contains a plural-field correction and marking ribbon, and has mounted thereon a control handle which extends upward from the body of said cartridge so as to clear the typewriter casing, cover or lid. The handle has a lower portion extending beneath the cartridge body so as to cooperate with the ribbonvibrator control linkage of the typewriter to select a correction field of the ribbon. The latter control linkage normally includes a manually operable plural-field-or-stencil selector, and the new cartridge is provided with means extending from its under side for automatically holding said selector in position to select one of the writing fields of the cartridge ribbon.
Inventors
- 👤 William H Wolowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:15
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/26; B41J29/36; B41J32/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A ribbon cartridge for use with a typewriter that employs a ribbon vibrator throw control that has a plurality of control positions, comprising a casing adapted to be placed in operative relation to a typewriter, said casing containing a two-color ribbon, one color being located above the other, said ribbon extending out of the casing and then extending back into the casing, and adjusting means mounted on the casing for engaging said throw control and exercising control over it to enable the selection of either of two of said control positions.
Claim 2
Dependent Claim
91 words
A ribbon cartridge for use with a typewriter that employs a ribbon vibrator throw control that has a plurality of control positions, comprising a casing adapted to be placed in operative relation to a typewriter, said casing containing a two-color ribbon, one color being located above the other, said ribbon extending out of the casing and then extending back into the casing, and adjusting means mounted on the casing for engaging said throw control and exercising control over it to enable the selection of either of two of said control positions.
Claim 3
Dependent Claim
51 words
A ribbon cartridge as defined in claim 1 in which said adjusting means comprises a manually engageable element located above the upper side of the casing so as to be in a convenient position for operation when the casing is in use, whereby to permit rapid adjustment of said throw control.
Claim 4
Dependent Claim
54 words
A ribbon cartridge as defined in claim 1 having a magnet adjacent the underside of said cartridge and carried by the cartridge for attracting a portion of said throw control and insuring greater certainty that the throw control assumes one of said two positions when the adjusting means is moved to select that position.
Claim 5
Dependent Claim
122 words
In a typewriter, a removable ribbon cartridge in operative relation to the typwriter, having a ribbon for the typewriter, a ribbon vibrator controller located on the typewriter beneath said cartridge and comprising a movable element adapted to be connected to the ribbon vibrator for control of the throw thereof and movable to different positions to effect said control, and a control arm normally in engagement with said movable element to hold the latter in one position, and manually adjustable means carried by the cartridge and movable to a position where it engages said movable element to move it to another position, said manually adjustable means including a manually operable portion extending adjacent the upper side of the cartridge permitting convenient access thereto.
Claim 6
Dependent Claim
122 words
In a typewriter, a removable ribbon cartridge in operative relation to the typwriter, having a ribbon for the typewriter, a ribbon vibrator controller located on the typewriter beneath said cartridge and comprising a movable element adapted to be connected to the ribbon vibrator for control of the throw thereof and movable to different positions to effect said control, and a control arm normally in engagement with said movable element to hold the latter in one position, and manually adjustable means carried by the cartridge and movable to a position where it engages said movable element to move it to another position, said manually adjustable means including a manually operable portion extending adjacent the upper side of the cartridge permitting convenient access thereto.
Claim 7
Dependent Claim
41 words
In a typewriter as defined in claim 4, a magnet carried by the cartridge and adjacent the lower side thereof for holding said control arm when said manually adjustable means is retracted from said position where it engages said movable element.
Claim 8
Dependent Claim
101 words
A typewriter as defined in claim 4 in which said movable element when moved to said another position disengages its operating contact with said control arm, said control arm having a portion adapted to be attracted by a magnet, and a magnet carried by the cartridge for attracting said portion to stabilize the position of said control arm when said adjusting means is moved to drive said movable element to said another position and also permitting the movable element and control arm to resume their normal relative positions when the adjusting means is moved to disengage itself from the movable element.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |