US3904016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter ribbon arrangement having interchangeable ribbon loadable cartridges with attached movable ribbon lifters
Assignee: TA Triumph-Adler GmbH
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Filing: 1973-07-25
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Granted: 1975-09-09
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Expires: 1993-07-25
Abstract
Abstract A typewriter ribbon arrangement has upper and lower portions which are supported on a carriage for movement with a single element printer. The upper portion contains the supply of ribbon and is removably attachable to the lower portion which is fixedly mounted on the carriage and has separate drive mechanisms for use with an upper portion having a cloth ribbon or an upper portion having a carbon ribbon. Each upper portion carries a pivotally supported ribbon lifter so they may be interchangeably attached to the lower portion without further threading. The upper portion for a cloth ribbon has spool-supporting spindles which are drivingly coupled to an indexing ratchet wheel drive mounted in the lower portion, and the upper portion additionally carries a pair of drag levers for keeping the ribbon taut and a pair of tension arms for sensing the tautness of the ribbon to operate a ribbon reversing means mounted in the lower portion when a spool carried by a spindle becomes fully wound.
Inventors
- 👤 Hans-Georg Hengelhaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
237 words
A ribbon lifting and feed arrangement comprising a base portion for interchangeably mounting a first ribbon loadable cartridge and a second ribbon loadable cartridge, each of said first and second cartridges having a pair of rotatable spindles for supporting supply and take-up ribbon spools and having a ribbon lifter pivotally supported thereon for lifting a length of ribbon threaded therethrough, first and second ribbon lifter drive means for pivoting said ribbon lifters pivotally mounted on said first and second cartridges respectively when one or the other cartridge is mounted on said base portion, said first and second ribbon lifter drive means including corresponding first and second drive levers pivotally supported on said base portion in spaced-apart relation to each other for imparting different driving movements to the ribbon lifters of said first and second cartridges, said ribbon lifters of said first and second cartridges each having a coupling arm positioned for cooperative engagement with the corresponding first and second drive levers of said first and second ribbon lifter drive means, said first and second drive levers each carrying a coupling pin for engagement with the coupling arm of the corresponding ribbon lifters of said first and second cartridges, and said coupling arms of the ribbon lifters of said first and second cartridges each having a slot formed therein for receiving the coupling pin of said corresponding first and second drive levers upon attachment to said base portion.
Claim 2
Dependent Claim
237 words
A ribbon lifting and feed arrangement comprising a base portion for interchangeably mounting a first ribbon loadable cartridge and a second ribbon loadable cartridge, each of said first and second cartridges having a pair of rotatable spindles for supporting supply and take-up ribbon spools and having a ribbon lifter pivotally supported thereon for lifting a length of ribbon threaded therethrough, first and second ribbon lifter drive means for pivoting said ribbon lifters pivotally mounted on said first and second cartridges respectively when one or the other cartridge is mounted on said base portion, said first and second ribbon lifter drive means including corresponding first and second drive levers pivotally supported on said base portion in spaced-apart relation to each other for imparting different driving movements to the ribbon lifters of said first and second cartridges, said ribbon lifters of said first and second cartridges each having a coupling arm positioned for cooperative engagement with the corresponding first and second drive levers of said first and second ribbon lifter drive means, said first and second drive levers each carrying a coupling pin for engagement with the coupling arm of the corresponding ribbon lifters of said first and second cartridges, and said coupling arms of the ribbon lifters of said first and second cartridges each having a slot formed therein for receiving the coupling pin of said corresponding first and second drive levers upon attachment to said base portion.
Claim 3
Dependent Claim
95 words
An arrangement according to claim 1, the combination further comprising: said base portion including a pair of ratchet wheels supported for rotational movement and indexing means driven in an oscillatable movement with each printing operation for rotatably indexing said pair of ratchet wheels, and said pair of ratchet wheels having central axial openings formed therein for receiving the end portions of said pair of rotatable spindles in said first cartridge upon attachment of said first cartridge to said base portion for imparting incremental rotational movement to ribbon spools carried by said pair of rotatable spindles.
Claim 4
Dependent Claim
115 words
An arrangement according to claim 2: control means on said base portion for enabling said indexing means to rotatably index one of said pair of ratchet wheels for winding ribbon in one direction, said base portion further including ribbon reversing means for acting on said control means for enabling said indexing means to rotatably index the other of said pair of ratchet wheels for winding ribbon in an opposite direction, and said first cartridge further including sensing means for sensing ribbon tension and being operable in response to increasing ribbon tension for operating said ribbon reversing means to alternate the indexing of said pair of ratchet wheels to wind the ribbon in an opposite Direction.
Claim 5
Dependent Claim
26 words
An arrangement as recited in claim 1, said cartridges and said base portion having complimentary means for positioning and securing said cartridges on said base portion.
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |