Reading machine for punched document cards
US4034975A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1974 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | May 24, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K13/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A processing machine, particularly a reader, for punched document cards including a hopper for a deck of the document cards, pick rolls disposed beneath the hopper in such position as to feed the document cards transversely thereof from the bottom of the hopper, a vertically movable hopper bed for moving the deck onto and off of the pick rolls to make them effective or ineffective, a deck lifter positioned beneath the card deck in the hopper for supporting one side of the card deck after the bottommost card has been moved transversely thereof partially out from underneath the other cards in the deck, driving rolls for moving the bottommost card longitudinally after it has been partially so moved from underneath the rest of the deck and means operative for reading punched holes in the document card on continued longitudinal movement of the card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.