Objective adjusting means

Claim 1

IN A CAMERA, A STATIONARY CYLINDER HAVING AT LEAST ONE AXIAL GUIDING SLOT; A FIRST LENS MOUNT INCLUDING AT LEAST ONE FIRST CYLINDRICAL ELEMENT COAXIALLY MOUNTED IN SAID STATIONARY CYLINDER; A SECOND LENS MOUNT INCLUDING A SECOND CYLINDRICAL ELEMENT COAXIALLY MOUNTED ON SAID STATIONARY CYLINDER, ONE OF SAID LENS MOUNTS BEING AXIALLY DISPLACEABLE FOR FOCAL LENGTH ADJUSTMENT, THE OTHER ONE OF SAID LENS MOUNTS BEING AXIALLY DISPLACEABLE FOR DISTANCE AND FOCUSING ADJUSTMENT; A ROTATABLE THIRD CYLINDRICAL ELEMENT COAXIALLY MOUNTED ON SAID STATIONARY CYLINDER AND HAVING GUIDING MEANS PROJECTING THROUGH SAID GUIDING SLOT FOR IMPARTING AN AXIAL MOVEMENT UPON SAID FIRST CYLINDRICAL ELEMENT UPON ROTATION; A FIRST AND A SECOND ADJUSTING MEMBER COAXIALLY DISPOSED AT SAID CAMERA AND AT AN ANGLE RELATIVE TO THE AXIS OF SAID CYLINDERS; A FIRST GEARING MEANS COMPRISING A PLURALITY OF GEAR TEETH ON THE PERIPHERY OF SAID THIRD CYLINDRICAL MEMBER TO FORM A GEAR THEREON, AND A CROWN GEAR ON SAID FIRST ADJUSTING MEANS MESHING WITH SAID GEAR TEETH FOR IMPARTING A ROTARY MOTION OF SAID FIRST ADJUSTING MEMBER UPON SAID THIRD CYLINDRICAL ELEMENT; AND A SECOND GEARING MEANS WITH CAM AND GROOVE ARRANGEMENT COMPRISING A CAM FOLLOWER PROJECTING FROM SAID SECOND CYLINDRICAL MEMBER, AND A PLATE CAM ON SAID SECOND ADJUSTING MEANS HAVING A GROOVED CAM SURFACE THEREIN RECEIVING SAID CAM FOLLOWER FOR IMPARTING A ROTARY MOTION OF SAID SECOND ADJUSTING MEMBER AS AXIAL MOTION UPON SAID SECOND CYLINDRICAL ELEMENT.