US3660204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for applying carrying handles of paper or plastics material to a web
Assignee: Windmoeller and Hoelscher KG
•
Filing: 1969-07-17
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Granted: 1972-05-02
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Expires: 1989-07-17
Abstract
Abstract U-shaped carrying handles have been made from elongated strips of paper or plastics material in that both end portions have been folded through 90*. The handles are applied to a web intended to make carrying handles in such a manner that the end portions of the strip lead in the direction of travel of the web. The strip is first gripped in known manner in its intermediate portion. The strip end portions are folded through 90* opposite to the direction of travel of the strip. The resulting legs of the carrying handle are gripped at their end portions and advanced further. The intermediate portion is released. The carrying handles are turned over through 180* opposite to the direction of travel of the gripped ends and with their now leading legs are connected to the web extending in the same direction.
Inventors
- 👤 Heinz Wesselmann
- 👤 Friedhelm Brinkmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/86; B31B70/864; B31B2160/00; B31B2160/10; Y; Y10; Y10S; Y10S493/00; Y10S493/901; Y10S493/909; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1051
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
247 words
Apparatus for forming strips of flexible sheet material into U-shaped carrying handles and for applying said handles to a web intended for the manufacture of carrying bags, the apparatus comprising: a rotatable folding cylinder; first gripping means mounted on said folding cylinder for gripping said strips in their intermediate portions; folding means mounted on said folding cylinder for folding the end portions of said strips through 90* in a direction opposite to the direction of rotation of said folding cylinder, said strips being folded into U-shaped carrying handles such that their intermediate portions lead their end portions in the direction of rotation of said folding cylinder; a turning cylinder adjacent said folding cylinder, rotatable in a sense opposite to the sense of rotation of said folding cylinder; second gripping means mounted on said turning cylinder for gripping the end portions of said handles; stationary guiding means disposed adjacent the peripheral surface of said turning cylinder and shaped for turning said U-shaped handles through 180* from the direction of rotation of said handles when associated with said turning cylinder, such that the intermediate portions of said handles trail the end portions thereof; means for applying said turned U-shaped handles to said web; and means for controlling the operation of said first and said second gripping means such that said first gripping means opens to release the leading intermediate portions of said handles when said second gripping means has closed to grip the trailing end portions of said handles.
Claim 2
Dependent Claim
247 words
Apparatus for forming strips of flexible sheet material into U-shaped carrying handles and for applying said handles to a web intended for the manufacture of carrying bags, the apparatus comprising: a rotatable folding cylinder; first gripping means mounted on said folding cylinder for gripping said strips in their intermediate portions; folding means mounted on said folding cylinder for folding the end portions of said strips through 90* in a direction opposite to the direction of rotation of said folding cylinder, said strips being folded into U-shaped carrying handles such that their intermediate portions lead their end portions in the direction of rotation of said folding cylinder; a turning cylinder adjacent said folding cylinder, rotatable in a sense opposite to the sense of rotation of said folding cylinder; second gripping means mounted on said turning cylinder for gripping the end portions of said handles; stationary guiding means disposed adjacent the peripheral surface of said turning cylinder and shaped for turning said U-shaped handles through 180* from the direction of rotation of said handles when associated with said turning cylinder, such that the intermediate portions of said handles trail the end portions thereof; means for applying said turned U-shaped handles to said web; and means for controlling the operation of said first and said second gripping means such that said first gripping means opens to release the leading intermediate portions of said handles when said second gripping means has closed to grip the trailing end portions of said handles.
Claim 3
Dependent Claim
53 words
Apparatus according to claim 1, characterized in that said second gripping means comprises a leading half and a trailing half, both said halves being movable, the trailing half being controlled to open to receive the carrying handles and the leading half being controlled to open to deliver the carrying handles to the web.
Claim 4
Dependent Claim
32 words
Apparatus according to claim 2, characterized in that at least one of said gripping halves comprises a pressure member which is curved in accordance with the peripheral surface of the turning cylinder.
Claim 5
Dependent Claim
88 words
Apparatus according to claim 1, characterized in that said guiding device consists of a guide plate which extends around part of the turning cylinder, which near the receiving zone has a width which corresponds to the total width of the carrying handles whereas the width of said guide plate in a succeeding portion is less than the distance between the inside edges of the end portions of the handles; and further comprising glue-applying segments for applying glue to the adhering portions of the legs of the carrying handles.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4, and further comprising photoCell control means for disengaging the glue-applying segments if a carrying handle fails to be presented.
Claim 7
Dependent Claim
57 words
Apparatus according to claim 1, and further comprising a varying ratio transmission for driving the turning cylinder so that said turning cylinder revolves at the peripheral velocity of the folding cylinder as it receives the carrying handles and at the web velocity as it delivers the carrying handle, said web velocity being variable in dependence on size.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 6, characterized in that the varying ratio transmission consists of a cam-controlled differential transmission having a cam which is selected in dependence on size.
Claim 9
Dependent Claim
29 words
Apparatus according to claim 2, characterized in that the trailing gripping half is adapted to be moved beyond the peripheral surface of the turning cylinder during the opening movement.
Claim 10
Dependent Claim
32 words
Apparatus according to claim 8, characterized in that the trailing gripping half is carried by a slider which by means of a stationary cam is movable in a substantially radial guide slot.
Claim 11
Dependent Claim
47 words
Apparatus according to claim 8, characterized in that the trailing gripping half is pivoted to the turning cylinder on an axis which is highly eccentric relative to the axis of the turning cylinder and which succeeds the opening of said second gripping means in the peripheral direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |