US3647205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for feeding of sheets fittingly aligned to a machine
Assignee: Sächsisches Institut für die Druckindustrie
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Filing: 1970-05-15
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Granted: 1972-03-07
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Expires: 1990-05-15
Abstract
Abstract According to the method for feeding sheets fittingly aligned to a machine as taught by the invention, the sheet advancing, aligning, and controlling, as well as the moving of a control member is performed for a following sheet while the preceding sheet is still with its trailing edge upstream of a reference or control line thus overlapping the following sheet whereby the control member prevents erroneous indications for a following sheet by the preceding sheet. The present apparatus comprises journaled lever means which move said control member into and out of the path of a light beam to prevent a light reflection by a preceding sheet when a following sheet is out of alignment or absent.
Inventors
- 👤 Helmut Schone
- 👤 Gunter Weisbach
- 👤 Hans Johne
- 👤 Fritz Kuhn
- 👤 Werner Lein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:34
CPC Classifications
B; B41; B41F; B41F21/00; B41F21/04; B41F21/05; B65; B65H; B65H9/00; B65H9/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
An apparatus for feeding sheets fittingly aligned to a machine, comprising: a. an infeed and aligning mechanism including an infeed and a supporting structure for said infeed table. b. a shaft supported underneath said infeed table adjacent to a discharge edge of said table, c. lever means rigidly supported on said shaft for rocking movement therewith, between operative and inoperative positions, d. a photocell and alight source, constructed and arranged for reflection of light form the source by a properly aligned sheet and response to the reflected light by the photocell, e. a sidearm attached to said lever, f. guide means on said sidearm, and g. a movable support member for said light source and photocell, said support member being guided by said means for back and forth movement along the guide means, along the feeding direction of the sheet whereby the photocell and light source, in the operative position of the shaft and lever means, accurately prevents a preceding sheet from causing an erroneous indication of presence or alignment of a sheet.
Claim 2
Independent Claim
173 words
An apparatus for feeding sheets fittingly aligned to a machine, comprising: a. an infeed and aligning mechanism including an infeed and a supporting structure for said infeed table. b. a shaft supported underneath said infeed table adjacent to a discharge edge of said table, c. lever means rigidly supported on said shaft for rocking movement therewith, between operative and inoperative positions, d. a photocell and alight source, constructed and arranged for reflection of light form the source by a properly aligned sheet and response to the reflected light by the photocell, e. a sidearm attached to said lever, f. guide means on said sidearm, and g. a movable support member for said light source and photocell, said support member being guided by said means for back and forth movement along the guide means, along the feeding direction of the sheet whereby the photocell and light source, in the operative position of the shaft and lever means, accurately prevents a preceding sheet from causing an erroneous indication of presence or alignment of a sheet.
Claim 3
Dependent Claim
50 words
The apparatus according to claim 1 further comprising adjustment means adjustably supported by said lever for cooperation with said support member to adjust the position of the support member relative to the lever for properly adjusting the position of a reference line along a discharge edge of said Infeed table.
Claim 4
Dependent Claim
28 words
The apparatus according to claim 2, further comprising resilient means connected to said support member and to fixed point for urging said support member against said adjustment 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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |