PNEUMATIC READING SYSTEM FOR DOCUMENT CARDS

• Main Authors: LAGERGREN R,US, LENTZ R,US, SCHAFFER R,US, REIDENBACH J,US, JENSEN D,US
• Format: Patent
• Language: English
• Published: 01.01.1974
• Subjects: BASIC ELECTRIC ELEMENTS; CALCULATING; COMPUTING; COUNTING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS; SEMICONDUCTOR DEVICES

A document card reading system comprising a pneumatic switch assembly located opposite an air plenum and between which perforated document cards are passed. The plenum and switch assembly have aligned air discharge and reception ports between which jetted air flows when not blocked by a document car...