Scale comprising a multiplier for using a precomputed table and fractional multiplication

Claim 1

AN ELECTRICAL PRECOMPUTED MULTIPLYING SYSTEM FOR OBTAINING THE PRODUCT OF TWO FACTORS COMPRISING A SELECTOR SWITCH MOVABLE OVER A SERIES OF POSITIONS AND ADAPTED TO BE SET IN ONE OF SAID POSITIONS REPRESENTING ONE OF SAID FACTORS, A SERIES OF MOVABLE CONTACTS FORMING PART OF SAID SWITCH AND MOVABLE TOGETHER THEREWITH THROUGH SAID SERIES OF POSITIONS, A SEPARATE SERIES OF FIXED CONTACTS FOR EACH OF SAID MOVABLE CONTACTS IN EACH OF SAID POSITIONS ARRANGED SO THAT EACH MOVABLE CONTACT ENGAGES ONE OF SAID FIXED CONTACTS IN EACH POSITION OF SAID SELECTOR SWITCH, ELECTRICAL MEANS FOR SELECTING ONE OF SAID SERIES OF CONTACTS AS REPRESENTING THE OTHER FACTOR BY THE CONNECTION OF AN ELECTRICAL CIRCUIT THERETO, AN OUTPUT CIRCUIT HAVING A SERIES OF POSITIONS EACH CORRESPONDING TO THE PRODUCT OF TWO SUCH SELECTED FACTORS, AND MEANS CONNECTING EACH ONE OF SAID FIXED CONTACTS WITH ITS CORRESPONDING POSITION IN SAID OUTPUT CIRCUIT TO COMPLETE A CIRCUIT TO THE POSITION IN SAID OUTPUT CIRCUIT REPRESENTING THE PRODUCT OF THE ONE OF SAID FACTORS SELECTED BY THE POSITION OF SAID SELECTOR SWITCH AND THE OTHER FACTOR DETERMINED BY SELECTION OF THE PREDETERMINED MOVABLE CONTACT.