Library late-book fine computer

Details Library late-book fine computer Library late-book fine computer

1976-05-24

1978-05-02

Franklin, Lawrence R.

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Tabular

235 89R, G09D 100

Patent

active

040876780

ABSTRACT:
A computer including a base and a member superposed over the base and movable with respect to it. The base may be a card and the member may be a continuous flexible band surrounding the card. The band is slidable along the length of the card and also movable in the direction of its continuity. A series of dates, each including a month and day, is carried by one of the base and member, and a series of numbers is carried by the other. The dates are arranged in day-by-day sequence, and the numbers are in sequence with each successive number being larger than the one immediately previous to it by the amount of one day's fine. When the zero position of the sequence of numbers is moved opposite to the current date, the number adjacent the date on which a book was due will be the amount of the late fine.

REFERENCES:
patent: 1149516 (1915-08-01), Hirshberg
patent: 3815269 (1974-06-01), Roselli

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