Dog clutch for cable winches

Claim 1

IN A DOG CLUTCH ASSEMBLY FOR INTERMITTENTLY TRANSMITTING DRIVE FROM A ROTARY DRIVE ELEMENT DRIVEN BY A PRIME MOVER: A HUB CONSTITUTING A PART OF SAID ROTARY DRIVE ELEMENT, A DRIVE SHAFT EXTENDING THROUGH SAID HUB AND CONNECTED TO TRANSMIT DRIVE TO A WORKING MEMBER; A FEMALE CLUTCH ELEMENT SECURED TO SAID HUB, PROJECTING AXIALLY THEREFROM AND DEFINING THEREWITH A NON-CIRCULAR CLUTCH SOCKET; A MALE CLUTCH ELEMENT INCLUDING A CLUTCH HEAD AND A HUB EXTENDING AWAY FROM SAID ROTARY DRIVE ELEMENT AND MOUNTED ON SAID SHAFT, SAID HEAD BEING OF MATING CONFIGURATION FOR CLUTCHING ENGAGEMENT IN SAID SOCKET, SAID MALE CLUTCH ELEMENT HAVING AN AXIAL COUNTERBORE EXTENDING THROUGH ITS HUB AND AN ANNULAR RADIALLY INWARDLY PROJECTING INTERNAL LIP DEFINING AN END OF SAID COUNTERBORE WITHIN SAID HEAD, SAID LIP HAVING A NONCIRCULAR INNER MARGIN DEFINING A COUPLING APRETURE,SAID SHAFT HAVING A COUPLING PORTION OF CORRESPONDINGLY NONCIRCULAR CROSS-SECTION SLIDABLY RECEIVABLE IN SAID APERTURE TO PROVIDE A DRIVE COUPLING CONNECTION BETWEEN SAID HEAD AND SAID SHAFT; A COIL SPRING DISPOSED IN SAID COUNTER BORE AND HAVING ONE END SEATED AGAINST SAID LIP; AND ABUTMENT DISC SECURED TO THE OUTER END OF SAID SHAFT WITHIN SAID COUNTERBORE AND ENGAGING THE OTHER END OF SAID SPRING UNDER COMPRESSION; A LOCKING PIN PROJECTING RADIALLY OUTWARDLY FROM A RADIAL BORE IN SAID ABUTMENT DISC; SAID HUB HAVING A BAYONET SLOT IN WHICH THE END OF SAID PIN IS RECEIVED, SAID SLOT INCLUDING AN AXIAL LEG PROVIDING FOR AXIAL SHIFT OF SAID MALE CLUTCH ELEMENT BETWEEN ENGAGED AND DISENGAGED POSITIONS AND A CIRCUMFERENTIAL LEG EXTENDING TOWARD SAID CLUTCH HEAD IN A POSITION TO RECEIVE SAID PIN UPON MOVEMENT OF THE MALE CLUTCH ELEMENT AWAY FROM SAID ROTARY DRIVE ELEMENT TO A DISENGAGED POSITION, FOLLOWED BY ROTATARY SHIFT THEREOF, THEREBY TO ESTABLISG A LOCKOUT HOLDING CONNECTION BETWEEN THE MALE CLUTCH ELEMENT AND THE SHAFT, SAID CLUTCH ELEMENTS HAVING FLAT, SMOOTH RADIAL FACES WHICH ARE IN ADJACENT, OPPOSED RELATION IN THE CLUTCH-DISENGAGED POSITION AND ARE ADAPTED FOR SPRINGLOADED YIELDING BEARING ENGAGEMENT WITH ONE ANOTHER UPON RELEASE OF SAID HOLDING CONNECTION, SUCH RELEASE PROVIDING FOR RELATIVE ROTARY ADJUSTMENT OF SAID CLUTCH ELEMENTS FROM NON-REGISTERING TO REGISTERING POSITIONS DETERMINED BY RECEPTION OF SAID PIN IN SAID AXIAL LEG OF SAID SLOT, FOLLOWED BY AUTOMATIC SPRING-DRIVEN COUPLING ENGAGEMENT OF SAID CLUTCH ELEMENTS.