Automatic take-up device

Claim 1

AN AUTOMATIC TAKE-UP DEVICE FOR DRIVING A FILM TAKE-UP SPOOL IN CAMERA HOUSING IN ACCORDANCE WITH THE CONDITION OF THE SHUTTER IN THE CAMERA, COMPRISING: A SPRING COUPLED TO TRANSMIT ENERGY TO THE FILM TAKE-UP SPOOL; A LATCH ARRANGED TO PREVENT MOVEMENT OF THE SPOOL DURING EXPOSURE OF A FILM SECURED THERETO; AN EXPOSURE CONTROL MEANS OPERATIVELY ASSOCIATED WITH SAID LATCH SO THAT THE FILM MAY BE ADVANCED BY SAID SPRING AFTER EACH EXPOSURE; A WINDING KNOB; MEANS FOR COUPLING SAID WINDING KNOB TO SAID SPRING SO THAT ENERGY FOR TENSIONING SAID SPRING CAN BE TRANSMITTED THEREBETWEEN; A UNIDIRECTIONAL CLUTCH COUPLING THE CAMERA HOUSING TO SAID SPRING TO PREVENT UNWINDING THEREOF; A FLOATING TOOTHED ROLLER IN SAID UNIDRIECTIONAL CLUTCH SELECTIVELY POSITIONABLE IN A SMOOTH SURFACE SLIPPING RECESS SECTION OF A HOUSING PORTION OF SAID CLUTCH; AND A GEAR MEMBER IN SAID CLUTCH COAXIAL WITH SAID HOUSING PORTION ARRANGED TO CONTINOUSLY ENGAGE SAID TOOTHED ROLLER; SAID TOOTHED ROLLER BEING DRIVABLE FROM SAID SMOOTH SURFACE RECESS SECTION BY SAID GEAR MEMBER TO A NONSLIPPING TOOTHED RECESS SECTION IN RESPONSE TO BIAS DEVELOPED BY SAID SPRING, TO COUPLE SAID SPRING TO THE CAMERA HOUSING TO PREVENT UNWINDING THEREOF.