US3856394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film holding arrangement for photosetting machine
Assignee: H Berthold AG
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Filing: 1973-09-10
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Granted: 1974-12-24
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Expires: 1993-09-10
Abstract
Abstract A photosetting machine has a traverse formed with a support defining a seat and with a throughgoing exposure slot under said seat. A cassette has a cylindrical shell in which a cylindrical drum is journaled on a shaft. A piece of film is wrapped circumferentially around the drum and has its ends secured thereto by a pair of blocking elements each extending axially on the drum. A torsion spring is connected between the shell and the shaft of the drum to urge this drum into a position with one of the blocking elements resting against a bumper in the shell while preventing light entering the exposure window in the shell from falling on the film. An arm outside the shell is mounted on the shaft of the drum and has a gudgeon engageable with a cam slot on the support so as to pivot this drum on fitting of the cassette onto the seat and to allow light to fall on the film. This cam slot is formed on a gear wheel that also serves to rotate the drum within the shell.
Inventors
- 👤 H Linde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:29
CPC Classifications
B; B41; B41B; B41B21/00; B41B21/32; G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
A film holding arrangement for a photosetting machine or the like, said arrangement comprising: a support; a shell on said support and formed with a window; a film-carrying drum received in and surrounded by said shell while being rotatable relative thereto; at least one blocking element attached to said drum over an end of a piece of film adapted to receive light through said window; spring means between said drum and said shell for urging said shell and drum into a relative position in which said element prevents light entering said shell through said window from falling on said film; mounting means on said support including a seat for releasably supporting said shell; and means on said support and on said drum for relatively angularly displacing said shell and said drum to shift element out of said position when said shell is supported on said seat.
Claim 2
Dependent Claim
146 words
A film holding arrangement for a photosetting machine or the like, said arrangement comprising: a support; a shell on said support and formed with a window; a film-carrying drum received in and surrounded by said shell while being rotatable relative thereto; at least one blocking element attached to said drum over an end of a piece of film adapted to receive light through said window; spring means between said drum and said shell for urging said shell and drum into a relative position in which said element prevents light entering said shell through said window from falling on said film; mounting means on said support including a seat for releasably supporting said shell; and means on said support and on said drum for relatively angularly displacing said shell and said drum to shift element out of said position when said shell is supported on said seat.
Claim 3
Dependent Claim
35 words
The arrangement defined in claim 1 wherein said shell and said drum are substantially cylindrical and coaxial, said drum being provided with an axially extending shaft journaled in said shell and engageable with said seat.
Claim 4
Dependent Claim
34 words
The arrangement defined in claim 2 wherein said means for relatively angularly displacing said shell and said drum includes an arm on said shaft and a cam on said support engageable with said arm.
Claim 5
Dependent Claim
47 words
The arrangement defined in claim 3 wherein said arm extends radially of said shaft and is provided with an axially extending gudgeon, said arrangement further comprising means on said support including a wheel for rotating said drum in said shell, said cam being provided on said wheel.
Claim 6
Dependent Claim
58 words
The arrangement defined in claim 4 wherein said cam is formed with a cam slot having one end open away from said seat and a region extending offradially to the axis of said drum with said shell in said seat, whereby displacement of said gudgeon along the offradial region of said slot pivots said arm about said axis.
Claim 7
Dependent Claim
43 words
The arrangement defined in claim 5 wherein said window is axially elongated and said shell is formed to either side of said window with an axially elongated lip, said lips being parallel, said support being formed with a slot snugly receiving said lips.
Claim 8
Dependent Claim
28 words
The arrangement defined in claim 2 wherein said spring means includes a torsion spring having one end anchored to said shell and another end connected to said shaft.
Claim 9
Dependent Claim
42 words
The arrangement defined in claim 2 wherein said piece of film is wrapped circumferentially around said drum and has each end anchored by a respective blocking element, said elements extending substantially axially on said drum and wiping the inside of said shell.
Claim 10
Dependent Claim
22 words
The arrangement defined in claim 1, further comprising a bumper in said shell engageable with said blocking element in said position thereof.
Claim 11
Dependent Claim
16 words
The arrangement defined in claim 1 wherein said support is a cross-member of a photosetting machine.
References Cited (Backward Citations)
US2980000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |