US3763798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for stitching sheet materials
Assignee: Sächsisches Institut für die Druckindustrie
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Filing: 1971-12-29
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Granted: 1973-10-09
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Expires: 1991-12-29
Abstract
Abstract A support means supports layers of sheet material which travel in a predetermined path and direction. A working station is located above the support means and comprises a pair of axially parallel rotatable shafts extending transversely of the path, a pair of flange members which are mounted on the respective shaft for rotation therewith and are located in at least substantially parallel spaced planes, and at least one needle carrier mounted between the flange members pivotable with reference to both of them about axes paralleling one another and the shafts. One or more needles are carried by the needle carrier extending radially of the flange members so as to project radially beyond the same and to successively penetrate and withdraw from sheet material beneath the working station in response to the needle carrier approaching and receding from a predetermined angular position relative to the support means. Drive and control means effects advancement of the needle carrier at a circumferential speed which at least approximates the linear speed of travel of the sheet material.
Inventors
- 👤 W Bottcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:21
CPC Classifications
B; B42; B42B; B42B2/00; B42B2/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
172 words
In an apparatus for stitching books, pamphlets and the like, in combination, a support arrangement for supporting layers of sheet material travelling in a predetermined path and direction; a working station above said support arrangement and comprising a pair of axially parallel rotatable shafts extending transversely of said path, a pair of flange members each mounted on one of said shafts for rotation therewith and located in at least substantially parallel spaced planes, at least one needle carrier between said flange members pivotable with reference to both about axes paralleling one another and said shafts, and at least one needle carried by said carrier and extending radially of said flange members so as to project radially beyond the same and to successively penetrate and withdraw from sheet material beneath said working station in response to said needle carrier approaching and receding from a predetermined angular position relative to said support arrangement; and means for imparting to said needle carrier and said sheet material at least substantially coordinated circumferential and linear speeds, respectively.
Claim 2
Dependent Claim
172 words
In an apparatus for stitching books, pamphlets and the like, in combination, a support arrangement for supporting layers of sheet material travelling in a predetermined path and direction; a working station above said support arrangement and comprising a pair of axially parallel rotatable shafts extending transversely of said path, a pair of flange members each mounted on one of said shafts for rotation therewith and located in at least substantially parallel spaced planes, at least one needle carrier between said flange members pivotable with reference to both about axes paralleling one another and said shafts, and at least one needle carried by said carrier and extending radially of said flange members so as to project radially beyond the same and to successively penetrate and withdraw from sheet material beneath said working station in response to said needle carrier approaching and receding from a predetermined angular position relative to said support arrangement; and means for imparting to said needle carrier and said sheet material at least substantially coordinated circumferential and linear speeds, respectively.
Claim 3
Dependent Claim
61 words
In an apparatus as defined in claim 1, said means comprising drive means for said needle carrier, and auxiliary gear means operatively associated with said drive means for periodically imparting to said needle carrier a component of movement coincident with the travel of said sheet material and whose linear speed is exactly coordinated with the linear speed of said sheet material.
Claim 4
Dependent Claim
59 words
In an apparatus as defined in claim 1, said means comprising displacing means for periodically displacing said working station with reference to said path in a sense imparting to said needle carrier a component of movement coincident with the travel of said sheet material and whose linear speed is exactly coordinated with the linear speed of said sheet material.
Claim 5
Dependent Claim
70 words
In an apparatus as defined in claim 1, said means comprising drive means for advancing said support means in said path, and auxiliary gear means operatively associated with said drive means for imparting to said support means and thereby to said sheet material, a linear speed which is exactly coordinated with the linear speed of said needle carrier during travel of the latter in a horizontal component of movement thereof.
Claim 6
Dependent Claim
47 words
In an apparatus as defined in claim 1; further comprising at least one additional needle carrier and at least one additional needle, similar to the first-mentioned ones and mounted between said flange members at a location which is circumferentially spaced from said first-mentioned needle carrier and needle.
References Cited (Backward Citations)
US1266793A
Cited
US1483521A
Cited
US3024746A
Cited
US3087721A
Cited
US3492955A
Cited
US3595183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |