Numbering machine with check digit function

Details Numbering machine with check digit function Numbering machine with check digit function

1978-10-27

1981-05-05

Coven, Edward M.

Printing

Selective or progressive

Numbering

101102, 371 54, G06F 1110, B41J 340

Patent

active

042651735

ABSTRACT:
There is disclosed a numbering machine designed so that code numbers as well as check digits each consisting of a single-place digit are printed by means of a mechanical mechanism. The check digits are printed by a check digit type wheel having an arrangement of circulating digits which are calculated in correspondance with code numbers in accordance with a modulus 10 or 11 check with predetermined weights. When there is a carry from one code number digit place to the next higher digit place, it is necessary to print the digit skipped a predetermined number of the digits in the circulating digit arrangement, and as a result a drive control mechanism is provided so that when a change from one code number to the next higher code number necessitates a skipping operation, the change is detected and the check digit type wheel is rotated idly through a predetermined angle.

REFERENCES:
patent: 3254596 (1966-06-01), Shovp et al.
patent: 3571581 (1971-03-01), Kaus
patent: 3650205 (1972-03-01), Hybrow et al.
patent: 3778766 (1973-12-01), Rapp
patent: 3815495 (1974-06-01), Straudbein
patent: 4085670 (1978-04-01), Poole
Lavin et al. IBM Tech. Discl. Bulletin, vol. 10, No. 12, May, 1968, pp. 1872-1873. _

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