US3753330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for packing strips of photographic film
Assignee: Agfa Gevaert AG
•
Filing: 1971-09-22
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Granted: 1973-08-21
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Expires: 1991-09-22
Abstract
Abstract Apparatus for enclosing sections of photographic roll films in transparent envelopes has two rolls of convoluted webs of weldable synthetic plastic material from which the webs are being withdrawn in such a way that their leading portions form a funnel. A severing device subdivides successive films into sections of requisite length, and a transfer device collects and introduces such sections into the funnel between the webs and all the way to a welding station where the webs are intermittently welded to each other to form envelopes each of which contains a single section or a stack of two or more superimposed sections. The webs can be severed subsequent to formation of each envelope or subsequent to formation of two or more interconnected envelopes to thus separate from the webs a series of discrete envelopes or a series of composite envelopes. Such composite envelopes can be folded in leporello fashion.
Inventors
- 👤 F Hujer
- 👤 W Dietl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:16
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/02; G; G03; G03C; G03C3/00; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1317; Y10T156/1322
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
139 words
In an apparatus for enclosing sections of photographic films in envelopes, a combination comprising two sources of webs of weldable synthetic plastic material, each of said webs having a predetermined width; guide means for guiding said webs for movement along a pair of convergent paths so that the leading portions of the thus guided webs form a funnel; a welding device adjacent to said paths and including means for intermittently welding sAid leading portions of the webs to each other to thus form envelopes each of which has at least two welded seams; severing means for subdividing successive films into sections whose length at most equals said predetermined width; and transfer means for introducing the thus obtained sections into said funnel between said leading portions of the webs so that each of said envelopes contains at least one section.
Claim 2
Dependent Claim
139 words
In an apparatus for enclosing sections of photographic films in envelopes, a combination comprising two sources of webs of weldable synthetic plastic material, each of said webs having a predetermined width; guide means for guiding said webs for movement along a pair of convergent paths so that the leading portions of the thus guided webs form a funnel; a welding device adjacent to said paths and including means for intermittently welding sAid leading portions of the webs to each other to thus form envelopes each of which has at least two welded seams; severing means for subdividing successive films into sections whose length at most equals said predetermined width; and transfer means for introducing the thus obtained sections into said funnel between said leading portions of the webs so that each of said envelopes contains at least one section.
Claim 3
Dependent Claim
27 words
A combination as defined in claim 1, wherein said means for intermittently welding said leading portions comprises electrode means arranged to produce at least one interrupted seam.
Claim 4
Dependent Claim
19 words
A combination as defined in claim 2, wherein said interrupted seam extends in the longitudinal direction of said webs.
Claim 5
Dependent Claim
55 words
A combination as defined in claim 1, further comprising second guide means for successive films and drive means for intermittently moving such films lengthwise along said second guide means, said severing means being adjacent to the path for films in said second guide means and said tranfer means being located immediately past said severing means.
Claim 6
Dependent Claim
42 words
A combination as defined in claim 4, further comprising means for moving said transfer means along a path wherein said transfer means has a component of movement which is parallel to the direction of movement of films in said second guide means.
Claim 7
Dependent Claim
45 words
A combination a defined in claim 1, wherein said means for intermittently welding said leading portions of the webs comprises a first electrode arranged to provide said webs with transversely extending seams and two additional electrodes arranged to provide said webs with longitudinally extending seams.
Claim 8
Dependent Claim
44 words
A combination as defined in claim 6, wherein said welding device further comprises means for cutting said webs in substantial parallelism with said transversely extending seams to form discrete envelopes each having an open side and each confining at least one section of film.
Claim 9
Dependent Claim
31 words
A combination as defined in claim 7, further comprising a receptacle for the collection of discrete envelopes and conveyor means for transporting discrete envelopes from said cutting means into said receptacle.
Claim 10
Dependent Claim
51 words
A combination as defined in claim 1, wherein said means for intermittently welding said leading portions of the webs comprises electrode means arranged to provide longitudinally spaced portions of said webs with transversely extending seams to thus form a series of interconnected envelopes each of which contains at least one section.
Claim 11
Dependent Claim
47 words
A combination as defined in claim 9, wherein said welding device further comprises means for cutting said webs in parallelism with said transversely extending seams to thus separate from the webs a composite envelope consisting of several interconnected envelopes, such composite envelope being foldable in leporello fashion.
Claim 12
Dependent Claim
42 words
A combination as defined in claim 1, wherein said transfer means comprises means for collecting stacks of superimposed sections and for introducing such stacks between said leading portions of the webs so that each of said envelopes contains a stack of sections.
Claim 13
Dependent Claim
24 words
A combination as defined in claim 11, wherein each of said stacks contains all sections obtained on severing of a full length of film.
Claim 14
Dependent Claim
56 words
A combination as defined in claim 11, wherein said stack collecting means comprises a pair of clamping elements one of which is movable toward and away from the other element and means for biasing said one element toward said other element, said elements having outwardly extending inlet portions to facilitate lengthwise movement of successive sections therebetween.
Claim 15
Dependent Claim
54 words
A combination as defined in claim 13, wherein said transfer means further comprises means for pressing said one element toward said other element to augment the action of said biasing means and to thus clamp a stack of sections between said elements during insertion of a stack between said leading portions of the webs.
Claim 16
Dependent Claim
18 words
A combination as defined in claim 1, wherein said welding device is movable bEtween a plurality of positions.
Claim 17
Dependent Claim
40 words
A combination as defined in claim 15, wherein said means for intermittently welding said leading portions of the webs is arranged to provide such leading portions with seams during movement of said welding device between a pair of said positions.
Claim 18
Dependent Claim
64 words
A combination as defined in claim 1, wherein said transfer means comprises a gripping device including film engaging tongs and movable from a first position in which said gripping device engages the foremost section of a film during subdivision of the film by said severing means to a second position to thereby introduce the freshly separated section between said leading portions of the webs.
References Cited (Backward Citations)
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |