Programmably alterable incrementing system
US3940127A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Apr 8, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K13/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A programmably alterable incrementing system particularly adapted for use in conjunction with an apparatus for selectively indexing punch cards or like sheet material through a work station; such apparatus being particularly susceptible to errors in tolerance such as may be due to inaccuracies in mechanical components, but which are particularly attributable to variation in humidity conditions. Means including a stepping switch are provided to introduce a corrective factor, as needed, into the indexing system to ensure that the required correspondence exists between the actual and the intended increment imparted to a punch card as it is advanced through the work station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.