Mount for photographic objectives

Claim 1

A MOUNT ASSEMBLY FOR OBJECTIVES OF PHOTOGRAPHIC CAMERAS COMPRISING, IN COMBINATION, THREADEDLY INTERCONNECTED SUBSTANTIALLY CYLINDRICAL MALE AND FEMALE MEMBERS, THE THREADED PORTIONS OF SAID MEMBERS BEING OF UNIFORM DIAMETER THROUGHOUT THE AXIAL LENGTH OF THE THREADED PORTIONS; LENS MEANS CARRIED BY SAID MALE MEMBER; FACING DIAMETRICALLY EXTENDING INTEGRAL PLANE SURFACES ON SAID MEMBERS INTERENGAGEABLE UPON TIGHTENING OF SAID MALE MEMBER INTO SAID FEMALE MEMBER; THE ROOT DIAMETER OF THE FEMALE THREADS BEING SUFFICIENTLY IN EXCESS OF THE APEX DIAMETER OF THE MALE THREADS THAT SAID TWO MEMBERS THREADEDLY INTERFIT LOOSELY WITH SUBSTANTIAL PLAY THEREBETWEEN EXCEPT WHEN SAID PLANE SURFACES ARE INTERENGAGED; THE FLANKS OF THE MALE THREAD FACING THE DIAMETRICALLY EXTENDING PLANE SURFACE OF SAID MALE MEMBER FORMING A FIRST ANGLE OF NOT IN EXCESS OF 45 DEGREES WITH THE AXIS OF SAID MALE MEMBER; THE FLANKS OF THE FEMALE THREAD FACING IN A DIRECTION AWAY FROM THE DIAMETRICALLY EXTENDING PLANE SURFACE OF SAID FEMALE MEMBER FORMING A SECOND ANGLE OF NOT IN EXCESS OF 45 DEGREES WITH THE AXIS OF SAID FEMALE MEMBER AND SUBSTANTIALLY EQUAL TO SAID FIRST ANGLE; THE APEX ANGLES OF BOTH THREADS BEING 90 DEGREES; SAID FLANKS OF THE FEMALE THREAD ENGAGING AND SLIDING ALONG SAID FLANKS OF THE MALE THREAD, AS SAID PLANE SURFACES ARE BROUGHT INTO FIRM ENGAGEMENT UPON TIGHTENING OF SAID MEMBERS, TO CENTER SAID MALE MEMBER IN SAID FEMALE MEMBER.