Patent US3843113A successfully refreshed from Google Patents.
US3843113A
Expired / Lapsed
US
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Multi-page signatures and apparatus and method for producing same
Assignee: Harris Graphics Corp
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Filing: 1973-08-06
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Granted: 1974-10-22
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Expires: 1993-08-06
Abstract
Abstract A method and an apparatus for producing a multi-page signature product having a plurality of intersecting folds minimizes the formation of wrinkles at the intersection of the folds and provides for efficient folding by forming a plurality of slits in a portion of the sheet material along one of the fold lines. The slits are formed adjacent to a cross fold line in the material which is at right angles to a subsequently formed longitudinal fold line in the material. The slits are angled to the cross fold line and terminate before passing across the cross fold line. The slits preferably are located on opposite sides of the cross fold line, and the slits on one side of the cross fold line are staggered with respect to the slits on the other side of the cross fold line.
Inventors
- 👤 R Schaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:07
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/12; B65H45/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
223 words
A method of producing a multi-page sheet material product comprising the steps of: advancing unslit sheet material to a slitting station, forming a first transverse row of short, closely spaced parallel slits in the sheet material, which slits are angled to the direction of advance of the sheet material with first ends of the slits in the material lying on a first line transverse to the direction of advance of the material, leaving a longitudinally extending unslit area adjacent the first tranverse line, forming a continuous fold in the unslit area of the sheet material closely adjacent to and spaced from the first ends of the slits, said step of forming a continuous fold including the step of folding the unslit area along a line extending parallel to and spaced from said first line and forming an uninterrupted and slit-free first folded edge extending between opposite edge portions of the sheet material and spaced from all slits in the sheet material, advancing the sheet material with said uninterrupted and slitfree folded edge leading, engaging said continous uninterrupted and slitfree folded edge with register stops to register the material at a second folding station, and creating a second fold at right angles to said continuous unslit first transverse folded edge while said continuous unslit first transverse folded edge is maintained against the register stops.
Claim 2
Independent Claim
223 words
A method of producing a multi-page sheet material product comprising the steps of: advancing unslit sheet material to a slitting station, forming a first transverse row of short, closely spaced parallel slits in the sheet material, which slits are angled to the direction of advance of the sheet material with first ends of the slits in the material lying on a first line transverse to the direction of advance of the material, leaving a longitudinally extending unslit area adjacent the first tranverse line, forming a continuous fold in the unslit area of the sheet material closely adjacent to and spaced from the first ends of the slits, said step of forming a continuous fold including the step of folding the unslit area along a line extending parallel to and spaced from said first line and forming an uninterrupted and slit-free first folded edge extending between opposite edge portions of the sheet material and spaced from all slits in the sheet material, advancing the sheet material with said uninterrupted and slitfree folded edge leading, engaging said continous uninterrupted and slitfree folded edge with register stops to register the material at a second folding station, and creating a second fold at right angles to said continuous unslit first transverse folded edge while said continuous unslit first transverse folded edge is maintained against the register stops.
Claim 3
Dependent Claim
87 words
A method as defined in claim 1 further including forming a second transverse row of short closely spaced parallel slits in the sheet material the ends of which lying on a second line transverse to the direction of advance of the material which second line is parallel to said first line and which is located adjacent said unslit area, and wherein the step of forming the continuous fold comprises the step of folding the sheet material in the unslit area between the first and second transverse lines.
Claim 4
Dependent Claim
51 words
A method as dEfined in claim 2 wherein the slits in the first and second transverse rows are staggered with respect to each other so that the slits on one side of the unslit area are located in the space between the slits on the other side of the unslit area.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |