Abstract 1,078,355. Photographic film magazines. EASTMAN KODAK CO. Sept. 11, 1964 [Sept. 13, 1963], No. 37211/64. Heading G2A. A photographic film magazine comprising two semi-cylinders 1a, 1c joined by an apertured plate, a light tight cover 2, a freely rotatable spool 3 in the open ended take up chamber 1c, the spool having grooves which engage ribs in the chamber 1c and cover 2 to provide a light tight joint, is provided with a releasable pawl 5 co-operating with toothing 1i and 2a to allow the spool to be turned only in the winding up direction. The front plate is provided with a rib 1e having a notch if the position of which depends on the sensitivity of the film loaded in the magazine. A second spool Fig. 4 (not shown) may be provided in the film supply chamber la which is smaller than the chamber 1c. Two other forms of pawl and ratchet means are described.
Inventors
👤 Steisslinger Kurt
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-06 11:53
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A FILM MAGAZINE COMPRISING: A FRONT PART FORMED INTO A SEMI-CYLINDER CLOSED AT ITS ENDS WHICH SERVE AS THE FRONT WALL OF A FILM SUPPLY CHAMBER AND INTO A SEMI-CYLINDER WHICH SERVES AS THE FRONT WALL OF A FILM CHAMBER FOR HOUSING EXPOSED FILM; SAID FILM CHAMBER BEING OPEN AND HAVING A FILM SPOOL DISPOSED THEREIN, SID SPOOL BEING PROVIDED WITH AT LEAST ONE FLANGE AND BEING ROTATABLY SUPPORTED IN SAID FILM CHAMBER; BOTH SAID SEMI-CYLINDERS BEING CONNECTED BY A FRONT PLATE HAVING AN OPENING THROUGH WHICH FILM MAY BE EXPOSED WHEN DRAWN ACROSS FROM ONE CHAMBER TO THE OTHER; A COVER FOR LIGHT-TIGHTLY CLOSING THE OPEN SIDE OF SAID FRONT PART, AND COOPERATING PAWL MEANS AND RATCHET MEANS DISPOSED BETWEEN SAID SPOOL FLANGE AND SAID FILM CHAMBER AND ACCESSIBLY LOCATED ON THE OUTSIDE OF SAID FILM MAGAZINE FOR RELEASABLY PREVENTING CLOCK-SPRINGING OF THE EXPOSED FILM WITHIN SAID FILM CHAMBER IN THE UNWIND DIRECTION.
Claim 2
Dependent Claim
154 words
A FILM MAGAZINE COMPRISING: A FRONT PART FORMED INTO A SEMI-CYLINDER CLOSED AT ITS ENDS WHICH SERVE AS THE FRONT WALL OF A FILM SUPPLY CHAMBER AND INTO A SEMI-CYLINDER WHICH SERVES AS THE FRONT WALL OF A FILM CHAMBER FOR HOUSING EXPOSED FILM; SAID FILM CHAMBER BEING OPEN AND HAVING A FILM SPOOL DISPOSED THEREIN, SID SPOOL BEING PROVIDED WITH AT LEAST ONE FLANGE AND BEING ROTATABLY SUPPORTED IN SAID FILM CHAMBER; BOTH SAID SEMI-CYLINDERS BEING CONNECTED BY A FRONT PLATE HAVING AN OPENING THROUGH WHICH FILM MAY BE EXPOSED WHEN DRAWN ACROSS FROM ONE CHAMBER TO THE OTHER; A COVER FOR LIGHT-TIGHTLY CLOSING THE OPEN SIDE OF SAID FRONT PART, AND COOPERATING PAWL MEANS AND RATCHET MEANS DISPOSED BETWEEN SAID SPOOL FLANGE AND SAID FILM CHAMBER AND ACCESSIBLY LOCATED ON THE OUTSIDE OF SAID FILM MAGAZINE FOR RELEASABLY PREVENTING CLOCK-SPRINGING OF THE EXPOSED FILM WITHIN SAID FILM CHAMBER IN THE UNWIND DIRECTION.