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Patent US3844189A successfully refreshed from Google Patents.
US3844189A
Expired / Lapsed
US
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Web feeding apparatus
Assignee: Reed International Ltd
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Filing: 1973-05-15
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Granted: 1974-10-29
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Expires: 1993-05-15
Abstract
Abstract Web feeding apparatus including a web diverting device which is controllable to cause a free leading end of a web to take a selected one of two alternative paths. The web diverting device comprises a pair of facing surfaces which diverge from each other in the web feeding direction whereby each defines a respective one of the two alternative paths. Air feed devices are arranged to direct a flow of air over either one of said surfaces as selected in the direction of web feed, to draw the web to that surface.
Inventors
- 👤 R Jardine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:43
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/34; B21C47/3433; B21C47/3441; B21C47/3466; B21C47/3475; B65; B65H; B65H19/00; B65H19/22; B65H19/2238; B65H19/26; B65H23/00; B65H23/04; B65H23/24; B65H2301/00; B65H2301/40; B65H2301/44; B65H2301/448; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2066; Y10T83/2074; Y10T83/647; Y10T83/6472
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
183 words
Web feeding apparatus including a web diverting device which is controllable to cause a free leading end of a web to take a selected one of two alternative paths, the web diverting device comprising a pair of facing surfaces which diverge from each other in the web feeding direction whereby each defines a respective one of the two alternative paths, the facing surfaces of the diverting device extending substantially parallel to each other for a length before they commence to diverge, and means for directing a flow of air over either one of said surfaces as selected in the direction of web feed, whereby the free leading end of a web passing between the facing surfaces is drawn to the one of the surfaces over which the flow of air is directed, the means for directing the flow of air over the facing surfaces comprising air feed devices respectively disposed in each of said facing surfaces part way along their substantially parallel portions, and web severing means positioned to sever the web substantially at the commencement of the divergence of said facing surfaces.
Claim 2
Dependent Claim
183 words
Web feeding apparatus including a web diverting device which is controllable to cause a free leading end of a web to take a selected one of two alternative paths, the web diverting device comprising a pair of facing surfaces which diverge from each other in the web feeding direction whereby each defines a respective one of the two alternative paths, the facing surfaces of the diverting device extending substantially parallel to each other for a length before they commence to diverge, and means for directing a flow of air over either one of said surfaces as selected in the direction of web feed, whereby the free leading end of a web passing between the facing surfaces is drawn to the one of the surfaces over which the flow of air is directed, the means for directing the flow of air over the facing surfaces comprising air feed devices respectively disposed in each of said facing surfaces part way along their substantially parallel portions, and web severing means positioned to sever the web substantially at the commencement of the divergence of said facing surfaces.
Claim 3
Dependent Claim
51 words
Web feeding apparatus according to claim 1, wherein the web severing means comprise a pair of web severing blades, each arranged to be moved from an inoperative position behind a respective one of the facing surfaces to a position in which it projects through the facing surface to sever the web.
Claim 4
Dependent Claim
39 words
Web feeding apparatus according to claim 2, wherein the diverging portions of said facing surfaces each define together with a further surface a web guiding throat and each of said blades in its projecting position closes the adjacent throat.
Claim 5
Dependent Claim
65 words
Web feeding apparatus according to claim 2, wherein control means are provided for controlling the air feed devices and the web severing blades so that upon movement of one blade so that it projects through one of said facing surfaces to sever the web, the air feed device associated with the other surface is caused to supply a flow of air over said other surface.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |