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US3810568A
Expired / Lapsed
US
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Apparatus for transporting webs of photosensitive material through developing machines or the like
Assignee: Agfa Gevaert AG
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Filing: 1973-03-15
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Granted: 1974-05-14
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Expires: 1993-03-15
Abstract
Abstract A developing machine for webs of photosensitive material wherein a band is trained over a set of guide rolls and can transport a separable clamp through a series of vessels containing developing, fixing and other liquids. A portion of the clamp extends sideways from the band and has a set of mushroom-, pinor barb-shaped projections which are caused to penetrate through the leader of a web so that the latter is entrained through the developing machine. The projections can be attached to the leader outside or in the interior of the machine by causing the leader and the clamp to pass between two rollers one of which is grooved to receive the projections and is sufficiently close to the other roller to cause the projections to puncture the leader. The leader is folded over the clamp to reduce the strain on the punctured portions.
Inventors
- 👤 H Kempe
- 👤 W Kwiaikowski
- 👤 M Vidakovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:51
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/135; G03D13/00; G03D13/003; G03D13/02; G03D13/08; G03D13/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
90 words
Apparatus for transporting webs of photosensitive material or the like, particularly for transporting photosensitive material through developing or like machines, comprising a conveyor defining an elongated path; drive means operative to move said conveyor; and an entraining device secured to said conveyor and having at least one projection means fixedly secured to the surface of said entraining device and adapted to puncture and at least partially penetrate through the leader of a web whereby said device entrains the web along said path in response to operation of said drive means.
Claim 2
Dependent Claim
90 words
Apparatus for transporting webs of photosensitive material or the like, particularly for transporting photosensitive material through developing or like machines, comprising a conveyor defining an elongated path; drive means operative to move said conveyor; and an entraining device secured to said conveyor and having at least one projection means fixedly secured to the surface of said entraining device and adapted to puncture and at least partially penetrate through the leader of a web whereby said device entrains the web along said path in response to operation of said drive means.
Claim 3
Dependent Claim
48 words
Apparatus as defined in claim 1, wherein said conveyor comprises an endless flexible element and said entraining device comprises a first portion secured to and a second portion extending laterally from said flexible element, said entraining device having a plurality of projections provided on said second portion thereof.
Claim 4
Dependent Claim
15 words
Apparatus as defined in claim 2, wherein each of said projections has a rounded tip.
Claim 5
Dependent Claim
13 words
Apparatus as defined in claim 1, wherein said projection is a mushroom-shaped stud.
Claim 6
Dependent Claim
36 words
Apparatus as defined in claim 1, wherein said projection includes a shank and a substantially semispherical head which is arranged to penetrate through the leader of a web so that the leader thereupon surrounds said shank.
Claim 7
Dependent Claim
46 words
Apparatus as defined in claim 1, wherein said projection includes a shank and a head having a convex outer surface and two substantially parallel side faces, said head being arranged to penetrate through the leader of a web so that the leader thereupon surrounds said shank.
Claim 8
Dependent Claim
63 words
Apparatus as defined in claim 1, wherein said entraining device includes a first portion secured to and a second portion extending laterally from said conveyor, said entraining deviCe having a plurality of projections provided on said second portion thereof, said projections forming at least one row which extends transversely of said path and the projections of said row being equidistant from each other.
Claim 9
Dependent Claim
33 words
Apparatus as defined in claim 7, wherein the projections of said row are staggered with respect to each other, as considered in the direction of movement of said entraining device with said conveyor.
Claim 10
Dependent Claim
22 words
Apparatus as defined in claim 1, further comprising attaching means for forcing said projections into and through the leader of a web.
Claim 11
Dependent Claim
95 words
Apparatus as defined in claim 9, wherein said attaching means comprises a pair of attaching members disposed opposite each other at the opposite sides of a portion of said path and defining a passage for said entraining device and for the leader of a web, said passage having a narrower portion and a wider portion for said projection whereby, when the leader of a web is introduced into said passage while said entraining device is caused to move through said passage, said attaching members cause said projection to penetrate through the leader in said passage.
Claim 12
Dependent Claim
27 words
Apparatus as defined in claim 10, wherein said attaching members are rollers, one of said rollers having a circumferential groove defining said wider portion of said passage.
Claim 13
Dependent Claim
24 words
Apparatus as defined in claim 11, wherein said one roller has a cylindrical peripheral surface and said groove is provided in said peripheral surface.
Claim 14
Dependent Claim
22 words
Apparatus as defined in claim 11, wherein said one roller comprises two rings consisting of elastomeric material and flanking said circumferential groove.
Claim 15
Dependent Claim
48 words
Apparatus as defined in claim 11, wherein the axes of said rollers are located at a fixed distance from each other and the width of the narrower portion of said passage equals the thickness of said entraining device minus said projection plus twice the thickness of a web.
Claim 16
Dependent Claim
49 words
Apparatus as defined in claim 14, wherein said conveyor further comprises guide means for a web which is attached to said entraining device, said guide means being arranged to maintain a web, whose leader is attached to said projection, in contact with the periphery of one of said rollers.
Claim 17
Dependent Claim
30 words
Apparatus as defined in claim 11, wherein the diameters of said rollers are proportional to the resistance which the leader of a web offers to the penetration of said projection.
Claim 18
Dependent Claim
17 words
Apparatus as defined in claim 11, further comprising means for rotating at least one of said rollers.
Claim 19
Dependent Claim
34 words
Apparatus as defined in claim 1, wherein said projection extends from one side of said entraining device and further comprising a source of convoluted web located at the other side of said entraining device.
Claim 20
Dependent Claim
154 words
Apparatus for transporting webs of photosensitive material or the like, particularly for transporting photosensitive material through developing or like machines, comprising a conveyor defining an elongated path, including an endless flexible element, drive means operative to move said conveyor, an entraining device secured to said conveyor defining an endless path by said endless flexible element, and having at least one projection which is adapted to puncture and at least partially penetrate through the leader of a web whereby said device entrains the web along said path in response to operation of said drive means, a housing at least partially surrounding said endless path, attaching means provided in said housing and operative to attach the leader of a web to said entraining device, said housing having an aperture located upstream of said attaching means, as considered in the direction of travel of said entraining device along said path, to afford access to said entraining device.
Claim 21
Dependent Claim
154 words
Apparatus for transporting webs of photosensitive material or the like, particularly for transporting photosensitive material through developing or like machines, comprising a conveyor defining an elongated path, including an endless flexible element, drive means operative to move said conveyor, an entraining device secured to said conveyor defining an endless path by said endless flexible element, and having at least one projection which is adapted to puncture and at least partially penetrate through the leader of a web whereby said device entrains the web along said path in response to operation of said drive means, a housing at least partially surrounding said endless path, attaching means provided in said housing and operative to attach the leader of a web to said entraining device, said housing having an aperture located upstream of said attaching means, as considered in the direction of travel of said entraining device along said path, to afford access to said entraining device.
Claim 22
Dependent Claim
43 words
Apparatus as defined in claim 19, wherein said housing defines a light-tight chamber for said attaching means and further comprising a light trap provided in said housing for the passage of said entraining device from the region of said aperture into said chamber.
Claim 23
Dependent Claim
15 words
Apparatus as defined in claim 20, wherein said light trap comprises a plurality of brushes.
Claim 24
Dependent Claim
51 words
Apparatus as defined in claim 20, wherein said housing has a second aperture affording access to said chamber adjacent to said attaching means and adapted to be sealed by a magazine for a supply of convoluted web whose leader can be introduced into said chamber by way of said second aperture.
Claim 25
Dependent Claim
43 words
Apparatus as defined in claim 19, wherein said entraining device is separable from said conveyor and further comprising attaching means operable to cause said projection to penetrate through the leader of a web prior to connection of said entraining device to said conveyor.
References Cited (Backward Citations)
US2928329A
Cited
US3619050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |