Data processing card punching

Claim 1

APPARATUS FOR PUNCHING HOLES IN DATA PROCESSING CARDS COMPRISING: A DATA CARD SUPPORTING STATION; AT LEAST A FIRST TUBE ASSEMBLY POSITIONED WITH ONE END ADJACENT SAID CARD STATION; AT LEAST A SECOND TUBE ASSEMBLY LONGITUDINALLY ALIGNED WITH SAID FIRST TUBE ASSEMBLY AND WITH ONE END THEREOF SPACED FROM BUT PROXIMATE TO SAID ONE END OF SAID FIRST TUBE ASSEMBLY SO THAT SAID CARD STATION IS BETWEEN SAID ONE ENDS OF SAID TUBE ASSEMBLIES; A PROPULSION MECHANISM; SAID PROPULSION MECHANISM COMPRISING PNEUMATIC-PRESSURE MEANS AND MEANS OPERATIVELY CONNECTED TO SAID PROPULSION MECHANISM AND THE DISTAL OTHER ENDS OF BOTH SAID TUBE ASSEMBLIES FOR CONVEYING SAID PRESSURE PRODUCED BY SAID PNEUMATIC MEANS INTO SAID OTHER ENDS OF SAID TUBES; A PUNCHING PROJECTILE HAVING AT LEAST ONE CUTTING PORTION IN ONE OF SAID TUBE ASSEMBLIES ADJACENT SAID DISTAL OTHER END THEREOF; MEANS FOR ACTUATING SAID PNEUMATIC MEANS SO THAT A GASEOUS PRESSURE IS PRODUCED IN EACH OF SAID OTHER ENDS OF SAID TUBE ASSEMBLIES OF SUFFICIENT MAGNITUDE TO PROPEL SAID PUNCHING PROJECTILE SITUATED IN SAID OTHER END OF EITHER OF SAID TUBE ASSEMBLIES ALONG THE LENGTH OF SAID TUBE, SO AS TO PASS FROM SAID ONE END OF ONE OF SAID TUBE ASSEMBLIES, THROUGH A CARD WHICH MAY BE POSITIONED AT SAID CARD SUPPORTING STATION AND INTO SAID ONE END OF THE OTHER OF SAID TUBE ASSEMBLIES; A PNEUMATIC ESCAPE MEANS POSITIONED BETWEEN SAID OTHER END AND ONE END OF EACH OF SAID TUBE ASSEMBLIES, SO AS TO ALLOW THE ESCAPE OF SAID GASEOUS PRESSURE IN THE ABSENCE OF SAID PROJECTILE BETWEEN SAID ESCAPE MEANS AND SAID OTHER END OF EITHER OF SAID TUBE ASSEMBLIES; SAID PNEUMATIC ESCAPE MEANS BEING FORMED DIRECTLY IN SAID TUBE ASSEMBLIES BY A DISCONTINIUTY OF THE WALLS THEREOF; SAID WALLS FORMING SAID ESCAPE MEANS BEING SUFFICIENTLY SPACED APART TO ALLOW A CARD DISC FORMED BY THE PUNCHING OPERATION TO PASS THERETHROUGH SO AS TO ESCAPE FROM THE INTERIOR OF SAID TUBE ASSEMBLIES; AND ADDITIONAL MEANS FOR ASSISTING IN DISLODGING PUNCHED CARD DISCS WHICH MAY ADHERE TO SAID CUTTING PORTION OF SAID PUNCHING PROJECTILE, AT LEAST PART OF SAID ADDITIONAL MEANS BEING POSITIONED ADJACENT SAID ESCAPE MEANS AND OPERATING AT TIMES UPON A CARD DISC WHICH MAY BE CARRIED BY SAID PUNCHING PROJECTILE.