Position analog unit for automatic controls

Claim 1

IN A MACHINE HAVING A POSITION ANALOG UNIT WITH AN ELECTRICAL DEVICE THEREIN INCLUDING A ROTATABLE ELEMENT FOR PRODUCING AN ELECTRICAL SIGNAL IN ACCORDANCE WITH RELATIVE MOVEMENT OF TWO MACHINE MEMBERS ALONG A PREDETERMINED LINE OF TRAVEL, SAID POSITION ANALOG UNIT BEING ATTACHED TO ONE OF SAID MACHINE MEMBERS, A TRANSMISSION FOR ROTATING THE ROTATABLE ELEMENT COMPRISING: (A) A RACK FIXED TO THE OTHER OF SAID MACHINE MEMBERS AND EXTENDING APPROXIMATELY PARALLEL TO THE PREDETERMINED LINE OF TRAVEL OF THE MACHINE MEMBERS, (B) A PINION ENGAGED WITH SAID RACK, (C) MEANS FOR SUPPORTING SAID PINION IN THE POSITION ANALOG UNIT FOR ROTATION ON AN AXIS SWINGABLY MOVABLE TOWARD AND AWAY FROM SAID RACK A LIMITED AMOUNT AND INCLUDING A BIAS DEVICE TO URGE SAID PINION TOWARD SAID RACK, AND (D) MEANS FOR CONNECTING SAID PINION TO THE ROTATABLE ELEMENT AND INCLUDING A FIRST ROTATABLE GEAR SWINGABLY MOVABLE WITH SAID PINION AND A SECOND GEAR IN MESH WITH SAID FIRST GEAR AND ON WHICH SAID FIRST GEAR ROLLS WHEN SAID PINION IS SWINGABLY MOVED.