File-Card Conveyor Operated by Pedals (Jul, 1951)
I really like this, it’s like a chain-driven database. It would be oh so much cooler if it were driven by a steam engine though.
File-Card Conveyor Operated by Pedals
Card files are carried directly to the operator by a chain-driven office filing system. The operator sits behind the unit, which looks like a large desk. She moves trays of file cards across the unit in either direction by operating two foot pedals. In one office, where three of the units were installed, a single operator was able to handle over half a million cards.