US3712719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector for use with magazines and reels for motion picture film
Assignee: Agfa Gevaert AG
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Filing: 1971-05-10
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Granted: 1973-01-23
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Expires: 1991-05-10
Abstract
Abstract A motion picture projector wherein the top wall of the housing is provided with an inwardly extending chamber for reception of smaller or larger magazines for motion picture film or for reception of smaller or larger exposed supply reels for motion picture film. The housing contains an automatic threading unit for the leader of motion picture film in a magazine and a manually operated threading unit serving for threading of motion picture film which is stored on an exposed supply reel. The reel can be mounted for rotation in the chamber by moving a mandrel from a retracted position to an extended position in which the mandrel extends through the central opening in the core of the reel. Such movement of the mandrel is utilized to move an obstructing member away from the inlet for manual threading of motion picture film which is stored on a reel.
Inventors
- 👤 J Zanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:50
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/323
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
In a motion picture projector for use with film-containing magazines and film-containing reels, a combination comprising a housing defining a chamber dimensioned to receive at least a portion of any one of a range of differently dimensioned magazines and any one of a range of differently dimensioned reels; and bearing means mounted and confined in said housing for axial movement between a first position outside of said chamber to thus allow for insertion of at least a portion of a selected one of said range of magazines into said chamber and a second position within said chamber to thereby rotatably support a selected reel.
Claim 2
Dependent Claim
104 words
In a motion picture projector for use with film-containing magazines and film-containing reels, a combination comprising a housing defining a chamber dimensioned to receive at least a portion of any one of a range of differently dimensioned magazines and any one of a range of differently dimensioned reels; and bearing means mounted and confined in said housing for axial movement between a first position outside of said chamber to thus allow for insertion of at least a portion of a selected one of said range of magazines into said chamber and a second position within said chamber to thereby rotatably support a selected reel.
Claim 3
Dependent Claim
146 words
In a motion picture projector for use with film containing magazines and film containing reels, a combination comprising a housing defining a chamber for reception of at least a portion of a magazine or reel; bearing means mounted in said housing for movement between a first position outside of said chamber and a second position within said chamber to thereby rotatably support a reel; a film threading unit which is in use during projection of images on a film which is being withdrawn from a reel in said chamber, said unit having an inlet for motion picture film which is being withdrawn from a reel in said chamber and a closure movable into and out of register with said inlet; and adjusting means for moving said closure out of register with said inlet in response to movement of said bearing means to said second position thereof.
Claim 4
Dependent Claim
146 words
In a motion picture projector for use with film containing magazines and film containing reels, a combination comprising a housing defining a chamber for reception of at least a portion of a magazine or reel; bearing means mounted in said housing for movement between a first position outside of said chamber and a second position within said chamber to thereby rotatably support a reel; a film threading unit which is in use during projection of images on a film which is being withdrawn from a reel in said chamber, said unit having an inlet for motion picture film which is being withdrawn from a reel in said chamber and a closure movable into and out of register with said inlet; and adjusting means for moving said closure out of register with said inlet in response to movement of said bearing means to said second position thereof.
Claim 5
Dependent Claim
46 words
A combination as defined in claim 2, further comprising a second film threading unit movable in said housing to and from an operative position and including means for withdrawing motion picture film from a magazine in said chamber in the operative position of said second unit.
Claim 6
Dependent Claim
65 words
A combination as defined in claim 3, further comprising a takeup reel rotatably mounted in said housing, said first mentioned threading unit being arranged to guide the film for movement from a selected reel in said chamber toward said takeup reel and said second threading unit being arranged to guide the film for movement from a selected magazine in said chamber toward said takeup reel.
Claim 7
Dependent Claim
56 words
A combination as defined in claim 2 wherein said chamber is arranged to receive reels of the type having a core provided with an opening, said bearing means comprising a mandrel which is reciprocable in said housing and extends into said opening of a reel in said chamber in said second position of said bearing means.
Claim 8
Dependent Claim
22 words
A combination as defined in claim 2, further comprising biasing means for permanently urging said bearing means to one of said positions.
Claim 9
Dependent Claim
55 words
A combination as defined in claim 6, further comprising spring-biased blocking means arranged to block the movement of said bearing means from the other position thereof and means for disengaging said blocking means from said bearing means to permit movement of said bearing means to said one position under the action of said biasing means.
Claim 10
Dependent Claim
26 words
A combination as defined in claim 2, wherein said chamber has an open top so that a magazine or reel can be dropped into said chamber.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |