Patent US2319834A successfully refreshed from Google Patents.
US3791269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for delivering sheets
Assignee: Rengo Co Ltd
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Filing: 1972-06-01
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Granted: 1974-02-12
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Expires: 1992-06-01
Abstract
Abstract A device for forming a space between groups of a predetermined number of overlapped sheets moving successively in a line. The device has a first conveyor for conveying sheets of a fixed length which are cut from a band sheet. A second conveyor is provided just beyond the delivery end of the first conveyor for receiving sheets from the first conveyor in overlapping relationship. A suction means is provided adjacent said second conveyor for temporarily holding a sheet on the second conveyor by suction. The second conveyor is movable in such a way that the upper run thereof is movable up and down above and below the level of the suction means. The second conveyor is normally above the suction means, but when a predetermined number of sheets has been delivered to the second conveyor, the second conveyor is lowered, and one of the sheets delivered thereto is held by suction from the suction means to delay its movement along the second conveyor momentarily, after which the second conveyor is again raised to release the delayed sheet from the suction means.
Inventors
- 👤 T Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:37
CPC Classifications
B; B65; B65H; B65H33/00; B65H33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
301 words
A device for creating a space in an overlapping stream of sheets which are cut from a web to a fixed length which web is fed to the device by a conveying means at a fixed feeding rate, comprising: a counting means for counting the sheets which are cut from the web to a fixed length; a first conveyor for receiving the cut sheets; a second conveyor having a plurality of parallel conveying runs positioned to receive the sheets from the first conveyor and operating at a slower rate of speed than the feeding speed of the web to cause the cut sheets to be formed into an overlapping stream; a suction means positioned between and normally below the conveying runs of the second conveyor; a plurality of holding tongues positioned between and normally below the conveying runs of the second conveyor and positioned between said suction means and said first conveyor, said second conveyor being adapted to move downward relative to said suction means to cause said suction means to project above the conveying runs when the counting means reaches a predetermined number, thus holding a sheet on the suction means when said counting means counts a predetermined number of the cut sheets and moving upwardly after an interval of time causing said suction means to sink below the conveying runs of the second conveyor and releasing the sheet halted on the suction means and all sheets which were received thereon during the interval of time, said holding tongues being adapted to project above and retreat below the conveying runs of said second conveyor synchronously with the downward and upward movement of said second conveyor for engaging the front edge of the sheet halted by the suction means so as to prevEnt the sheet from passing through the suction means.
Claim 2
Independent Claim
301 words
A device for creating a space in an overlapping stream of sheets which are cut from a web to a fixed length which web is fed to the device by a conveying means at a fixed feeding rate, comprising: a counting means for counting the sheets which are cut from the web to a fixed length; a first conveyor for receiving the cut sheets; a second conveyor having a plurality of parallel conveying runs positioned to receive the sheets from the first conveyor and operating at a slower rate of speed than the feeding speed of the web to cause the cut sheets to be formed into an overlapping stream; a suction means positioned between and normally below the conveying runs of the second conveyor; a plurality of holding tongues positioned between and normally below the conveying runs of the second conveyor and positioned between said suction means and said first conveyor, said second conveyor being adapted to move downward relative to said suction means to cause said suction means to project above the conveying runs when the counting means reaches a predetermined number, thus holding a sheet on the suction means when said counting means counts a predetermined number of the cut sheets and moving upwardly after an interval of time causing said suction means to sink below the conveying runs of the second conveyor and releasing the sheet halted on the suction means and all sheets which were received thereon during the interval of time, said holding tongues being adapted to project above and retreat below the conveying runs of said second conveyor synchronously with the downward and upward movement of said second conveyor for engaging the front edge of the sheet halted by the suction means so as to prevEnt the sheet from passing through the suction 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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |