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APPARATUS FOR CHANGING THE INFORMATION RECORDED ON CARDS

  • US 3,560,715 A
  • Filed: 05/29/1967
  • Issued: 02/02/1971
  • Est. Priority Date: 05/29/1967
  • Status: Expired due to Term
First Claim
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1. Apparatus for changing the value given to a card, said value being recorded on said card in the form of code marks, comprising:

  • means for reading said code marks means for memorizing said code as represented by said code marks;

    code providing means for providing another code representing another value by which said card value is to be changed;

    means for performing addition or subtraction between the values represented by said memorized code and said other code;

    means for recording the result of said calculation on said card in the form of code marks; and

    means for preventing said code providing means from applying said other code to said calculating means when the value represented by said other code is greater than the value represented by said memorized code.

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