Gear head assembly

Claim 1

A GEAR HEAD ASSEMBLY COMPRISING A CYLINDRICAL HOUSING; A GEAR CAGE IN A FIRST CYLINDRICAL FORMATION OF SAID HOUSING AND A HEAD MEMBER SUPPORTED IN A SECOND CYLINDRICAL FORMATION OF SAID HOUSING, THE LONGITUDINAL AXES OF SAID HOUSING AND GEAR CAGE COINCIDING; SAID GEAR CAGE HAVING A PAIR OF PARALLEL PLATES INTEGRALLY CONNECTED TO A PLURALITY OF SPACER MEMBERS EXTENDING BETWEEN THE PLATES; OPENINGS IN SAID PLATES, BEARINGS IN SAID OPENINGS; EACH OF SAID OPENINGS IN ONE PLATE BEING ALIGNED WITH AN OPENING IN THE OPPOSITE PLATE; A PLURALITY OF GEAR CARRYING SHAFTS BETWEEN SAID PLATES; SAID SHAFTS EACH BEING ROTATABLY SUPPORTED IN OPPOSITE ALIGNED OPENINGS AND AN ADDITIONAL OPENING IN ONE OF THE PLATES TO RECEIVE A DRIVING MEMBER, ONE OF SAID SHAFTS EXTENDING BEYOND THE OPPOSITE PLATE TO PROVIDE AN OUTPUT DRIVE GEAR; AN ADDITIONAL ROTATABLE SHAFT CARRIED BY THE HEAD MEMBER; A GEAR ON THE PORTION OF SAID SHAFT EXTENDING TOWARD SAID CAGE; SAID OUTPUT DRIVE GEAR MESHING WITH SAID GEAR ON THE SHAFT CARRIED BY SAID HEAD MEMBER; THE SAID LAST MENTIONED SHAFT EXTENDING BEYOND SAID HEAD MEMBER TO PROVIDE AN OUTPUT DRIVE; SAID SECOND CYLINDRICAL FORMATION BEING SLIGHTLY ECCENTRIC WITH RESPECT TO THE LONGITUDINAL AXIS OF THE HOUSING, WHEREBY SAID SHAFT CARRIED BY THE HEAD AND ITS GEAR ARE ECCENTRICALLY POSITIONABLE WITH RESPECT TO SAID LONGITUDINAL AXIS OF THE HOUSING AND THE CAGE; ADJUSTABLE CONNECTING MEANS FOR PERMITTING A CONTINUOUS ROTATABLE ADJUSTMENT BETWEEN SAID HOUSING MEMBER AND SAID CAGE WITHIN A PREDETERMINED ANGULAR LIMIT TO ADJUST FOR BACKLASH BETWEEN SAID OUTPUT DRIVE GEAR AND THE GEAR CARRIED BY THE SHAFT IN SAID HEAD MEMBER; AND MEANS FOR LOCKING THE CAGE AND HEAD TO SECURE SAID ADJUSTMENT.