US3761075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document conveying mechanism
Assignee: Singer Co
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Filing: 1971-12-29
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Granted: 1973-09-25
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Expires: 1991-12-29
Abstract
Abstract A bidirectional document feed mechanism for permitting manual insertion and accurate alignment of individual documents. Bidirectional driving is under control of a drive roller and a pressure roller which form a primary document conveying means. During manual insertion of the document the drive and pressure rollers are separated and a document stop element aligns the inserted document. A secondary document conveying means is provided for holding the document and providing an initial feed in one direction until the document stop is removed from the document path and the primary document conveying means takes over. The secondary document conveying means responds to rotation of the drive roller in first and second directions in first and second different manners. More specifically, the secondary document conveying means comprises a subassembly which is tipped in first and second reciprocal directions depending upon the direction of rotation of the drive roller.
Inventors
- 👤 Van Namen F Tjado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
B; B65; B65H; B65H9/00; B65H9/06; B65H5/00; B65H5/06; B65H5/062; B65H2601/00; B65H2601/10; B65H2601/11; Y; Y10; Y10S; Y10S271/00; Y10S271/902
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
177 words
A document conveying mechanism for controlling the bidirectional motion of a document along a predetermined path and comprising in combination; a. a document stop for limiting the initial displacement of a document in a first direction along said predetermined path; b. primary document conveying means including first and second rollers disposed on opposite sides of said document; c. a drive shaft attached to said first roller for moving said document in said first direction in response to rotation of said drive shaft in a first direction and in a second direction opposite to said first direction in response to rotation of said drive shaft in a second direction opposite to said rotation in a first direction; d. secondary document conveying means attached to said drive shaft and brought into contact with said document in a direction to convey said document in said first direction in response to the rotation of said drive shaft; and e. control meAns for removing said document stop from the path of said document after said secondary conveying means has contacted said document.
Claim 2
Dependent Claim
177 words
A document conveying mechanism for controlling the bidirectional motion of a document along a predetermined path and comprising in combination; a. a document stop for limiting the initial displacement of a document in a first direction along said predetermined path; b. primary document conveying means including first and second rollers disposed on opposite sides of said document; c. a drive shaft attached to said first roller for moving said document in said first direction in response to rotation of said drive shaft in a first direction and in a second direction opposite to said first direction in response to rotation of said drive shaft in a second direction opposite to said rotation in a first direction; d. secondary document conveying means attached to said drive shaft and brought into contact with said document in a direction to convey said document in said first direction in response to the rotation of said drive shaft; and e. control meAns for removing said document stop from the path of said document after said secondary conveying means has contacted said document.
Claim 3
Dependent Claim
53 words
The combination as set forth in claim 1 wherein said second roller is movable with respect to said first roller and a separation exists between said first and second rollers of said primary document conveying means while a document is inserted there between in said first direction until inhibited by said document stop.
Claim 4
Dependent Claim
63 words
The combination as set forth in claim 2 further including a guide plate to determine the boundaries of at least part of said predetermined path and for clamping said document between said guide plate and said secondary document conveying means when said secondary means is brought into contact with said document by the initial rotation of said drive shaft in said first direction.
Claim 5
Dependent Claim
67 words
The combination as set forth in claim 3 wherein said control means functions to cause movement of said secondary roller of said primary document conveying means towards engagement with said document after said secondary document conveying means has clamped said document and to remove said document stop from the path of said document such that further rotation of said drive shaft results in movement of said document.
Claim 6
Dependent Claim
44 words
The combination as set forth in claim 1 wherein said secondary document conveying means includes first and second pulleys rotationally supported on a bearing block and coupled together by a friction belt with said secondary pulley attached to said drive shaft for rotation therewith.
Claim 7
Dependent Claim
30 words
The combination as set forth in claim 5 wherein said belt is under tension and said second pulley is supported on an individual roller which rotates with said second pulley.
Claim 8
Dependent Claim
36 words
The combination set forth in claim 6 wherein rotation of said individual roller of said second pulley exerts a torque on said bearing block for pivoting it in the direction of rotation of said individual roller.
Claim 9
Dependent Claim
28 words
The combination set forth in claim 7 further including stop means for limiting the extent of pivotal motion in a first direction of said secondary document conveying 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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |