Patent US2133519A successfully refreshed from Google Patents.
Patent US3863749A successfully refreshed from Google Patents.
US3863749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spoolless ribbon cartridge with lift and feed features combined
Assignee: SCM Corp
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Filing: 1973-04-16
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Granted: 1975-02-04
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Expires: 1993-04-16
Abstract
Abstract A spoolless ribbon cartridge containing either an endless fabric ribbon or a roll of single-pass carbon ribbon and having projecting members which hold a portion of ribbon accessible for printing. The cartridge has built-in rotatable drive members for forcing used ribbon into a chamber of the cartridge where it is stored in random, multi-folded fashion. By using loosely meshed gears as drive members, the ribbon does not stick to the drive members and may be precreased during entry into the chamber. The drive members are rotated under control of a ribbon lift mechanism, which positions the cartridge such that printing occurs alternately from the upper and lower halves of the ribbon. Such rotation may effect a half character movement of the ribbon in each printing cycle or a full character movement of the ribbon in every other print cycle, depending on the design.
Inventors
- 👤 Donald S Perry
- 👤 Wyland L Fowler
- 👤 Richard E Shattuck
- 👤 Hans W Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:07
CPC Classifications
B; B41; B41J; B41J33/00; B41J33/14; B41J33/24; B41J33/28; B41J32/00; B41J32/02; B41J35/00; B41J35/04; B41J35/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
5 words
at least one print element;
Claim 2
Dependent Claim
5 words
at least one print element;
Claim 3
Dependent Claim
106 words
In a printing machine of the type having a cartridge for a ribbon, at least one projecting member on the cartridge, means for pivotally mounting the cartridge, and means for oscillating the cartridge about the pivotal mounting means, wherein the improvement comprises, in combination: a. first and second feed rotors journaled in the projecting member of the cartridge to feed the ribbon between the first and second feed rotors; b. a ratchet connected to the first feed rotor; and c. a pawl actuated by the oscillating means to engage the ratchet to rotate the first feed rotor and feed the ribbon during oscillation of the cartridge.
Claim 4
Dependent Claim
106 words
In a printing machine of the type having a cartridge for a ribbon, at least one projecting member on the cartridge, means for pivotally mounting the cartridge, and means for oscillating the cartridge about the pivotal mounting means, wherein the improvement comprises, in combination: a. first and second feed rotors journaled in the projecting member of the cartridge to feed the ribbon between the first and second feed rotors; b. a ratchet connected to the first feed rotor; and c. a pawl actuated by the oscillating means to engage the ratchet to rotate the first feed rotor and feed the ribbon during oscillation of the cartridge.
Claim 5
Dependent Claim
208 words
In a printing machine of the type having: 1. at least one print element; 2. means for mounting a ribbon in the printing machine, the ribbon mounting means having projecting members to hold a portion of the ribbon between the projecting members; 3. a first bell crank pivotally mounted in the printing machine and engaging the ribbon mounting means; 4. a cam follower; 5. means for connecting the cam follower to the first bell crank; 6. means for imparting motion; 7. a cam connected to the motion imparting means and engaged by the cam follower to oscillate the projecting members to move the portion of the ribbon held by the projecting members from a home position to a print position for impact by the print element to print on a record medium; and 8. a rotor in contact with the ribbon; wherein the improvement comprises: a second bell crank having a cam arm and a pawl arm and pivotally connected to the first bell crank, the cam arm of the second bell crank having a cam slot engaging a stud in the printing machine and the pawl arm of the second bell crank positioned to engage the rotor to feed the ribbon during oscillation of the projecting members.
Claim 6
Dependent Claim
208 words
In a printing machine of the type having: 1. at least one print element; 2. means for mounting a ribbon in the printing machine, the ribbon mounting means having projecting members to hold a portion of the ribbon between the projecting members; 3. a first bell crank pivotally mounted in the printing machine and engaging the ribbon mounting means; 4. a cam follower; 5. means for connecting the cam follower to the first bell crank; 6. means for imparting motion; 7. a cam connected to the motion imparting means and engaged by the cam follower to oscillate the projecting members to move the portion of the ribbon held by the projecting members from a home position to a print position for impact by the print element to print on a record medium; and 8. a rotor in contact with the ribbon; wherein the improvement comprises: a second bell crank having a cam arm and a pawl arm and pivotally connected to the first bell crank, the cam arm of the second bell crank having a cam slot engaging a stud in the printing machine and the pawl arm of the second bell crank positioned to engage the rotor to feed the ribbon during oscillation of the projecting members.
Claim 7
Dependent Claim
72 words
The printing machine of claim 2, in which the ribbon mounting means is a cartridge and the rotor is a first gear, and further comprising: a. means for pivotally mounting the cartridge in the printing machine; b. a second gear in the cartridge sandwiching the ribbon between the first and second gears; and c. a ratchet connected to the first gear, the pawl arm of the second bell crank engaging the ratchet.
Claim 8
Dependent Claim
16 words
a first bell crank pivotally mounted in the printing machine and engaging the ribbon mounting means;
Claim 9
Dependent Claim
16 words
a first bell crank pivotally mounted in the printing machine and engaging the ribbon mounting means;
Claim 10
Dependent Claim
3 words
a cam follower;
Claim 11
Dependent Claim
3 words
a cam follower;
Claim 12
Dependent Claim
36 words
The combination of claim 3, wherein said ratchet is normally held stationary by a detent on said cartridge and further including a resilient member on said cartridge clamping said ribbon to one of said projecting members.
Claim 13
Dependent Claim
11 words
means for connecting the cam follower to the first bell crank;
Claim 14
Dependent Claim
11 words
means for connecting the cam follower to the first bell crank;
Claim 15
Dependent Claim
32 words
The combination of claim 4, wherein said detent and said projecting members are integral parts of said cartridge, and wherein said first and second gears have a respectively different number of teeth.
Claim 16
Dependent Claim
4 words
means for imparting motion;
Claim 17
Dependent Claim
4 words
means for imparting motion;
Claim 18
Dependent Claim
52 words
a cam connected to the motion imparting means and engaged by the cam follower to oscillate the projecting members to move the portion of the ribbon held by the projecting members from a home position to a print position for impact by the print element to print on a record medium; and
Claim 19
Dependent Claim
52 words
a cam connected to the motion imparting means and engaged by the cam follower to oscillate the projecting members to move the portion of the ribbon held by the projecting members from a home position to a print position for impact by the print element to print on a record medium; and
Claim 20
Dependent Claim
74 words
a rotor in contact with the ribbon; wherein the improvement comprises: a second bell crank having a cam arm and a pawl arm and pivotally connected to the first bell crank, the cam arm of the second bell crank having a cam slot engaging a stud in the printing machine and the pawl arm of the second bell crank positioned to engage the rotor to feed the ribbon during oscillation of the projecting members.
Claim 21
Dependent Claim
74 words
a rotor in contact with the ribbon; wherein the improvement comprises: a second bell crank having a cam arm and a pawl arm and pivotally connected to the first bell crank, the cam arm of the second bell crank having a cam slot engaging a stud in the printing machine and the pawl arm of the second bell crank positioned to engage the rotor to feed the ribbon during oscillation of the projecting members.
References Cited (Backward Citations)
US1215105A
Cited
US2840218A
Cited
US3348650A
Cited
US3349888A
Cited
US3346090A
Cited
US3237747A
Cited
US3397767A
Cited
US3513957A
Cited
US3584722A
Cited
US3613857A
Cited
US3747734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |