Tabulating card reader

Claim 1

A TABULATING CARD READER COMPRISING A FIXEDLY POSITIONED CARD-SUPPORTING PLATFORM, AT LEAST ONE ROTATABLY SUPPORTED FEED ROLL HAVING A PERIPHERAL DRIVE SURFACE PROJECTING THROUGH AN OPENING IN SAID PLATFORM AND INTO DRIVING ENGAGEMENT WITH THE LOWER SURFACE OF A TABULATING CARD SUPPORTED ON SAID PLATFORM, PIVOTAL MEANS FOR ROTATABLY SUPPORTING AT LEAST ONE IDLER ROLL IN OPPOSING RELATION TO SAID FEED ROLL AND TRANSVERSELY MOVABLE INTO AND OUT OF BIASED ENGAGEMENT WITH THE UPPER SURFACE OF SAID TABULATING CARD FOR LONGITUDINAL DRIVE MOVEMENT OF SAID CARD BY IDLER ROLL PRESSURE ENGAGEMENT OF SAID CARD AGAINST THE PERIPHERAL DRIVE SURFACE OF SAID FEED ROLL, MEANS FOR ROTATIONALLY DRIVING SAID FEED ROLL IN SUCCESSIVE ANGULAR STEPS CORRESPONDING TO THE INDEX-POINT COLUMN SPACING OF SAID CARD, MEANS FOR READING COMBINATIONAL CODE APERTURES IN SUCCESSIVE INDEX-POINT COLUMNS OF SAID CARD, AND MANUALLY ACTUABLE MEANS FOR MOVING SAID PIVOTAL MEANS TO MOVE SAID IDLER ROLL BETWEEN CARD-DISENGAGED AND CARDENGAGED POSITIONS AND FOR CONCURRENTLY PROJECTING AND WITHDRAWING AT LEAST ONE LEADING-EDGE CARD-STOP MEMBER TO ENABLE MANUAL PREPOSITIONING OF A CARD ON SAID PLATFORM WITH THE FIRST INDEX-POINT COLUMN FOF SAID CARD ACCURATELY POSITIONED IN READINESS FOR READING BY SAID READING MEANS.