US3632052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible ribbon feed device
Assignee: DECISION DATA Inc A CORP OF
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Filing: 1969-09-16
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Granted: 1972-01-04
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Expires: 1989-09-16
Abstract
Abstract A device for reversing the direction of feeding of an inked ribbon which is bidirectionally fed between a pair of reels by selectively causing one or the other of the reels to rotate and takeup the ribbon thereon. A scissorlike member is located between the two reels with its arms biased against the peripheries of the rolls of ribbon on the reels. A pair of pressure-actuated switches, each of which is responsive to the position of one of the scissor arms, is provided to effect selective engagement of the reels with a motor by controlling electrically operated clutches. When a scissor arm becomes positioned to indicate that a predetermined low amount of ribbon is on one of the reels, one of the switches responds by drivingly engaging that reel with the motor while substantially disengaging the other reel from the motor. In this manner, the direction of ribbon feed is reversed. Preferably, the device also comprises a detachable cartridge within which the scissorlike member and reels are mounted.
Inventors
- 👤 John D Read
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:17
CPC Classifications
B; B41; B41J; B41J32/00; B41J33/00; B41J33/14; B41J33/40; B41J33/44; B41J33/51; B41J33/512
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
221 words
In a apparatus which bidirectionally feeds an elongated web between a pair of reels by rotating one or the other of the reels in a direction to takeup the elongated web thereon and which reverses the direction of feeding when a predetermined low amount of web is on one of the reels, the improvement comprises: a. a movable open-bottomed housing; b. a scissorlike member having a pair of scissor arms located within the housing: c. means for mounting the scissorlike member within the housing; d. means for rotatably mounting the reels within the housing; e. biasing means for urging the scissor arms against the peripheries of the rolls of web on the reels; f. a pair of control arms, each of which is adapted to be displaced by one of the scissor arms when the scissor arm is located in a position to indicate that a predetermined low amount of the web is in the roll against which it is urged; g. a pair of switches, each of which is adapted to be activated by one of the control arms when the control arm is displaced; and h. drive means, responsive to the switches, for selectively rotating either of the reels in a direction to takeup the web thereon when a predetermined low amount of the web is on the reel.
Claim 2
Dependent Claim
221 words
In a apparatus which bidirectionally feeds an elongated web between a pair of reels by rotating one or the other of the reels in a direction to takeup the elongated web thereon and which reverses the direction of feeding when a predetermined low amount of web is on one of the reels, the improvement comprises: a. a movable open-bottomed housing; b. a scissorlike member having a pair of scissor arms located within the housing: c. means for mounting the scissorlike member within the housing; d. means for rotatably mounting the reels within the housing; e. biasing means for urging the scissor arms against the peripheries of the rolls of web on the reels; f. a pair of control arms, each of which is adapted to be displaced by one of the scissor arms when the scissor arm is located in a position to indicate that a predetermined low amount of the web is in the roll against which it is urged; g. a pair of switches, each of which is adapted to be activated by one of the control arms when the control arm is displaced; and h. drive means, responsive to the switches, for selectively rotating either of the reels in a direction to takeup the web thereon when a predetermined low amount of the web is on the reel.
Claim 3
Dependent Claim
45 words
The apparatus as reCited in claim 1 further including a stationary panel and wherein the drive means, control arms, and switches are located on a first side of the panel, the panel having apertures through which project portions of the drive means and control arms.
Claim 4
Dependent Claim
40 words
The apparatus as recited in claim 2 and further including means for detachably mounting the housing on the side of the panel opposite to its first side such that the open bottom of the housing is placed adjacent the panel.
Claim 5
Dependent Claim
75 words
The apparatus as recited in claim 3 wherein a portion of each control arm is shaped to provide a camming surface over which one of the scissor arms, when in a position indicating that a predetermined low amount of web is in the roll against which it is urged, may slide when mounting the housing on the panel, whereby the control arms do not interfere with the scissor arm when the housing is being mounted.
Claim 6
Dependent Claim
19 words
The apparatus as recited in claim 1 wherein the biasing means urges the scissor arms away from each other.
Claim 7
Dependent Claim
24 words
The apparatus as recited in claim 1 wherein the biasing means comprises a torsional spring mounted at the pivot point of the scissorlike member.
Claim 8
Dependent Claim
38 words
The apparatus as recited in claim 1 wherein the means for mounting the scissorlike member within the housing comprises a member projecting from the top of the housing and joined to the scissorlike member at its pivot point.
Claim 9
Dependent Claim
66 words
The apparatus as recited in claim 1 wherein the drive means comprises a motor and a pair of electrically controlled clutches each of which is connected between the motor and one of the reels and adapted to drivingly engage the motor with the reel in response to displacement of one of said control arms by one of the scissor arms to activate one of the switches.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |