Contract bridge bidding guide

Claim 1

CONTRACT BRIDGE BIDDING APPARATUS COMPRISING, IN COMBINATION, A STACK OF SUBSTANTIALLY CIRCULAR BID PLATES ROTATABLY CONNECTED TO EACH OTHER FOR RELATIVE ROTATION ABOUT A COMMON AXIS, EACH ONE OF SAID BID PLATES HAVING A SPECIFIC POINT COUNT VALUE, A PLURALITY OF BID INSTRUCTIONS IMPRINTED IN CIRCULARLY SPACED APART AREAS UPON EACH SUCH PLATE, EACH OF SAID BID INSTRUCTIONS BEING INDICATIVE OF A SPECIFIC BID ATTRIBUTABLE TO A BRIDGE HAND OF SAID SPECIFIC POINT COUNT VALUE WITH RESPECT TO A PREVIOUS BID, A SUBSTANTIALLY CIRCULAR COVER SHEET ROTATABLY MOUNTED UPON SAID STACK OF BID PLATES HAVING A PLURALITY OF DIFFERENT PRIOR BIDS IMPRINTED IN CIRCULARLY SPACED APART AREAS THEREUPON, A POINTER CARRIED BY EACH ONE OF SAID BID PLATES AT A RADIAL POSITION SUBSTANTIALLY CORRESPONDING TO THE PERIPHERY OF SAID COVER SHEET, WINDOW MEANS IN SAID BID PLATES AND SAID COVER SHEET FOR VIEWING SAID BID INSTRUCTIONS ON SAID SELECTED BID PLATE APPROPOS TO AN ACTUAL PRIOR BID INDICATED BY SAID COVER SHEET IN ALIGNMENT WITH SAID POINTER OF SAID SELECTED BID PLATE, SAID STACK OF BID SAID POINTER OF SAID SELECTED BID PLATE, SAID STACK OF BID PLATES COMPRISING A PLURALITY OF SUBSTANTIALLY IDENTICAL CIRCULAR SECTIONS ROTATABLE RELATIVE TO EACH OTHER ABOUT A COMMON AXIS, EACH ONE OF SAID BID PLATES INCLUDING A RADIALLY OUTWARDLY EXTENDING TAB CONSISTING OF TWO SEGMENTS EACH HAVING A LENGTH INVERSELY PROPORTIONAL TO THE LENGTH OF THE OTHER ONE OF THE SEGMENTS, ALL OF SAID TABS BEING VISIBLE ADJACENT TO EACH OTHER OF SAID TABS, POINT COUNT INDICIA IMPRINTED UPON SAID RESPECTIVE TAB SECTIONS, ALL OF SAID INDICIA BEING VISIBLE WITH SAID STACK OF BID PLATES IN A STARTING POSITION, AND SAID COMMON AXIS COMPRISING A PIN ROTATABLY EXTENDING THROUGH THE CENTER OF EACH OF SAID CIRCULAR SECTIONS OF SAID BID PLATES, SAID TABS CONSTITUTING MEANS FOR ROTATING SAID COVER SHEET AND ALL PLATES INTERMEDIATE SAID COVER SHEET AND A SELECTED BID PLATE RELATIVE TO SAID POINTER OF SAID SELECTED BID PLATE.