Patent US3567147A successfully refreshed from Google Patents.
US3567147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus with automatic film threading mechanism
Assignee: Agfa Gevaert AG
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Filing: 1969-02-06
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Granted: 1971-03-02
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Expires: 1989-02-06
Abstract
Abstract A still camera wherein the inlet of the takeup chamber is adjacent to the discharge end of a film channel. A two-armed lever is pivotally mounted in the camera body behind the takeup chamber so that one of its arms defines with the discharge end of the channel a narrow gap for automatically directing the leader of roll film toward and through the inlet of the takeup chamber. The latter accommodates a rotary takeup reel and a deflecting device which causes the leader to convolute itself around the reel in response to actuation of the film transporting mechanism.
Inventors
- 👤 Dieter Engelsmann
- 👤 Rolf Schroeder
- 👤 Heinz Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:01
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B17/305
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
140 words
In a photographic apparatus for use with roll film of the type having a leader at the forward end thereof, a combination comprising a housing defining a takeup chamber having an inlet, said housing including a film channel terminating at said inlet so that the leader of a film which is moved lengthwise in said channel normally tends to advance toward said inlet; and guide means for directing the leader into said inlet, said guide means including a guide member movably mounted in said housing to overlie said inlet and having a portion adjacent to said film channel ahead of said inlet, and biasing means for urging said portion of said guide member toward said channel so that the latter defines with said guide member a gap wide enough to permit passage of the leader toward and through said inlet.
Claim 2
Dependent Claim
140 words
In a photographic apparatus for use with roll film of the type having a leader at the forward end thereof, a combination comprising a housing defining a takeup chamber having an inlet, said housing including a film channel terminating at said inlet so that the leader of a film which is moved lengthwise in said channel normally tends to advance toward said inlet; and guide means for directing the leader into said inlet, said guide means including a guide member movably mounted in said housing to overlie said inlet and having a portion adjacent to said film channel ahead of said inlet, and biasing means for urging said portion of said guide member toward said channel so that the latter defines with said guide member a gap wide enough to permit passage of the leader toward and through said inlet.
Claim 3
Dependent Claim
47 words
A combination as defined in claim 1, wherein said guide member is a lever which is pivotably mounted in said housing and includes two arms one of which constitutes said portion thereof and the other of which is adjacent to a stop provided therefor in said housing.
Claim 4
Dependent Claim
57 words
A combination as defined in claim 1, wherein said housing comprises a wall which is movable with reference to said guide means between open and closed positions to thereby respectively expose and conceal said film channel, said guide member being disposed between the inlet of said chamber and said wall when the latter assumes its closed position.
Claim 5
Dependent Claim
59 words
A combination as defined in claim 1, wherein said guide member is a lever which is pivotably mounted in said housing and includes two arms one of which constitutes said portion thereof and the other of which is adjacent to a stop provided therefor in said housing, said biasing means being interposed between said stop and said other arm.
Claim 6
Dependent Claim
79 words
A combination as defined in claim 1, wherein said housing comprises a wall which is movable with reference to said guide means between open and closed positions to thereby respectively expose and conceal said film channel, said guide member comprising follower means which extends into the path of movement of said wall toward closed position so that said wall effects movement of said guide member in a direction to widen the gap between said portion and said film channel.
Claim 7
Dependent Claim
32 words
A combination as defined in claim 1, further comprising a rotary takeup reel provided in said chamber, and deflecting means provided in said chamber to bias the leader against the takeup reel.
Claim 8
Dependent Claim
41 words
A combination as defined in claim 6, wherein said deflecting means comprises carrier means pivotably mounted in said chamber, at least one deflecting roller rotatably mounted on said carrier means, and biasing means for urging said roller against said takeup reel.
Claim 9
Dependent Claim
36 words
A combination as defined in claim 1, further comprising shifting means for moving the leader sideways during entry into said chamber when the leader of the film fails to enter the chamber in a predetermined position.
Claim 10
Dependent Claim
47 words
A combination as defined in claim 8, wherein said housing comprises a concave surface surrounding said chamber and said shifting means comprises a groove provided in said surface and being of gradually diminishing width as considered in the direction of travel of the leader in said chamber.
Claim 11
Dependent Claim
50 words
A combination as defined in claim 9, wherein said shifting means further comprises a slanting side face provided in said housing and flanking one side of said groove, said side face being engaged by and shifting the leader when the latter fails to enter the chamber in said predetermined position.
Claim 12
Dependent Claim
82 words
A combination as defined in claim 9, further comprising a rotary takeup reel mounted in said chamber and deflecting means including carrier means pivOtably mounted in said chamber and having a side facing said reel, at least one deflecting roller provided on said carrier means, and biasing means for urging said roller against said reel, said shifting means further comprising a second groove of diminishing width provided in said side of said carrier means and constituting an extension of said first-mentioned groove.
Claim 13
Dependent Claim
35 words
A combination as defined in claim 11, wherein said second groove has an end portion of minimum width closely adjacent to said roller, the width of said end portion approximating the width of the leader.
Claim 14
Dependent Claim
56 words
A combination as defined in claim 8, wherein said shifting means comprises a roll mounted on said guide member for rotation about an axis making an oblique angle with the longitudinal direction of said film channel, said roll being mounted on said portion of said guide member so that it is adjacent to the film channel.
Claim 15
Dependent Claim
39 words
A combination as defined in claim 13, further comprising lateral stop means provided in said housing to engage a marginal portion of the leader which is shifted by said roll during travel along said portion of said guide member.
Claim 16
Dependent Claim
137 words
A combination as defined in claim 1, further comprising a rotary takeup reel mounted in said chamber and having a toothed sprocket at one axial end thereof and a smaller-diameter portion extending from said sprocket toward the other axial end thereof, deflecting means including a pair of carriers pivotably mounted in said chamber, a pair of deflecting rollers each mounted on one of said carriers, and biasing means for urging said rollers against said reel, one of said rollers being arranged to bear against said sprocket and the other roller being arranged to bear against the smaller-diameter portion of said reel, and shifting means for moving the leader sideways toward said sprocket during entry into said chamber when the leader fails to enter the chamber in a predetermined position with reference to the axis of said reel.
Claim 17
Dependent Claim
44 words
A combination as defined in claim 15, wherein said shifting means comprises a groove provided in the carrier for said one roller and a slanting side face flanking said groove so as to guide the leader axially of the reel and toward said sprocket.
Claim 18
Dependent Claim
61 words
A combination as defined in claim 15, wherein said groove has an end portion of minimum width closely adjacent to said one roller, the width of said end portion being less than the width of the leader so that the leader is shifted sideways beyond the adjoining marginal portion of said channel when it reaches the end portion of said groove.
References Cited (Backward Citations)
US3383068A
Cited
US3476475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |