Filter assembly for photographic apparatus having two sets of pivoted filters

Claim 1

A FILTER ASSEMBLY FOR PHOTOGRAPHIC APPARATUS COMPRISING IN COMBINATION, A PAIR OF SUBSTANTIALLY PARALLELY ARRANGED SPACED SUPPORT PLATES HAVING INNER FACES FACING EACH OTHER, SAID SUPPORT PLATES BEING PROVIDED WITH SUBSTANTIALLY CENTRALLY ARRANGED ALIGNED OPENINGS HAVING A COMMON AXIS; TWO SETS OF FILTER MEANS, EACH OF SAID SETS OF FILTER MEANS COMPOSED OF A PLURALITY OF FILTER MEANS MOUNTED ON SAID INNER FACE OF ONE OF SAID SUPORT PLATES WITH SAID FILTER MEANS SPACED FROM EACH OTHER IN CIRCUMFERENTIAL DIRECTION AND IN DIRECTION OF SAID COMMON AXIS OF SAID OPENINGS, EACH OF SAID FILTER MEANS BEING PIVOTED ON THE RESPECTIVE SUPORT PLATE TURNABLY IN ITS PLANE ABOUT AN AXIS PARALLEL IN ALIGNMENT WITH SAID OPENINGS AND AN INTIVE POSITION IN ALIGNMENT WITH SAID OPENINGS AND AN INOPERATIVE POSITION OUT OF ALIGNMENT WITH SAID OPENINGS; AND TWO SETS OF ACTUATING MEANS, EACH SET CARRIED BY ONE OF SAID SUPPORT PLATES ON SAID INNER FACE THEREOF, EACH OF SAID ACTUATING MEANS BEING COUPLED WITH ONE OF SAID FILTER MEANS FOR MOVING THE SAME BETWEEN SAID INOPERATIVE AND OPERATIVE POSITIONS THEREOF, THE ACTUATING MEANS OF EACH SET OF ACTUATING MEANS ARRANGED CIRCUMFERENTIALLY SPACED FROM EACH OTHER AND PROJECTING INTO THE SPACE BETWEEN SAID SUPPORT PLATES TO SUCH AN EXTENT THAT AT LEAST PART OF SAID ACTUATING MEANS OF SAID TWO SETS OF ACTUATING MEANS ARE LOCATED IN A COMMON PLANE PARALLEL TO SAID SUPPORT CIRCUMFERENTIAL DIRECTION RELATIVE TO EACH OTHER SO THAT CIRCUMFERENTIAL DIRECTION RELATIVE TO EACH OTHER SO THAT THE ACTUATING MEANS OF ONE SET OF ACTUATING MEANS ARE LOCATED BETWEEN THE ACTUATING MEANS OF THE OTHER SET OF ACTUATING MEANS.