US3866497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-perforating of continuously moving, superimposed leaves
Assignee: Individual
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Filing: 1972-11-24
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Granted: 1975-02-18
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Expires: 1992-11-24
Abstract
Abstract A method and apparatus of producing continuous, crossperforated, snap-out business forms and the like consisting of a plurality of properly aligned, superimposed sheets in which the interval between cross-perforation lines may be varied with a minimum of ''''down-time'''' to provide business forms of diverse sizes while maintaining a uniform fold interval for stacking the continuous sheets one on top of the other into a pack.
Inventors
- 👤 Larry B Wolfberg
- 👤 John Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:41
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/18; B26F1/20; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0481; Y10T83/0515; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4838; Y10T83/929; Y10T83/9372; Y10T83/9408
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
In a method of preparing a cross-perforated, multi-leaved web foldable in opposite directions at preselected perforation fold line intervals for formation of a layered pack having, in each layer, a plurality of end-to-end articles separated by perforation tear lines, the steps of: advancing a plurality of leaves in superimposed, aligned relationship with one another along a common path of travel; presenting the advancing web of leaves to a first perforating station; producing spaced-apart, perforation fold lines in the advancing leaves at said first station by alternately penetrating the leaves from opposite directions at preselected intervals; presenting the advancing web of leaves to a second perforating station independent of said first station; and prOducing spaced-apart, perforation tear lines in the advancing web of leaves at said second station and at preselected intervals selected to locate at least one perforation tear line between each pair of perforation fold lines.
Claim 2
Dependent Claim
147 words
In a method of preparing a cross-perforated, multi-leaved web foldable in opposite directions at preselected perforation fold line intervals for formation of a layered pack having, in each layer, a plurality of end-to-end articles separated by perforation tear lines, the steps of: advancing a plurality of leaves in superimposed, aligned relationship with one another along a common path of travel; presenting the advancing web of leaves to a first perforating station; producing spaced-apart, perforation fold lines in the advancing leaves at said first station by alternately penetrating the leaves from opposite directions at preselected intervals; presenting the advancing web of leaves to a second perforating station independent of said first station; and prOducing spaced-apart, perforation tear lines in the advancing web of leaves at said second station and at preselected intervals selected to locate at least one perforation tear line between each pair of perforation fold lines.
Claim 3
Dependent Claim
26 words
In a method as claimed in claim 1, wherein the step of producing tear lines is carried out upstream from the step of producing fold lines.
Claim 4
Dependent Claim
29 words
In a method as claimed in claim 1, wherein said step of producing tear lines includes penetrating the leaves from one direction only for all of said tear lines.
Claim 5
Dependent Claim
39 words
In a method as claimed in claim 1, wherein is included the step of varying the spacing between said tear lines produced at said second station while maintaining the spacing between fold lines produced at said first station constant.
Claim 6
Dependent Claim
66 words
In a method as claimed in claim 1, wherein said tear lines are produced at said second station by a rotating member having at least one elongated set of peripherally disposed, leaf-penetrating means, and wherein is included the step of varying the number of said tear lines between each pair of fold lines by changing the number of sets of said penetrating means on said member.
Claim 7
Dependent Claim
55 words
In a method as claimed in claim 1, wherein said stations are provided with cylindrical, rotating members having peripherally disposed, elongated sets of leaf-penetrating means, and wherein is included the step of changing the spacing between the fold lines and between the tear lines by substituting members of one diameter for those of another diameter.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |