Pneumatically operated driving machine for fasteners

Claim 1

IN A PNEUMATICALLY OPERATED FASTENER DRIVING MACHINE, INCLUDING A FASTENER DIRECTING NOSE STRUCTURE AND A PNEUMATIC MOTOR HAVING A DRIVER ACTUATED THEREBY FOR DRIVING FASTENERS FROM SAID NOSE STRUCTURE, MEANS FOR SUPPLYING PNEUMATIC FLUID TO DRIVE SAID MOTOR, MEANS FOR CONTROLLING DELIVERY OF PNEUMATIC FLUID TO SAID MOTOR INCLUDING A PNEUMATIC FLUID PASSAGEWAY SYSTEM PROVIDED WITH A DIGITALLY CONTROLLABLE VALVE, A DISABLING VALVE IN SAID PASSAGEWAY SYSTEM INCLUDING A SAFETY TRIGGER ASSOCIATED WITH SAID NOSE STRUCTURE AND DISPOSED TO BE OPERATED BY ENGAGEMENT WITH A WORKPIECE IN ADVANCE OF ENGAGEMENT OF THE WORKPIECE BY THE NOSE STRUCTURE SO THAT SAID DISABLING VALVE WILL BE OPERATED TO CLEAR SAID PASSAGEWAY SYSTEM FOR CONTROL BY SAID DIGITALLY OPERABLE VALVE TO EFFECT OPERATION OF SAID PNEUMATIC FLUID DELIVERY CONTROLLING MEANS, AND INTERLOCK MEANS FOR HOLDING SAID DISABLING VALVE IN A NON-OPERATING POSITION WHEREIN SAID PASSAGEWAY SYSTEM IS CLEARED FOR CONTROL AT WILL BY SAID DIGITALLY OPERABLE VALVE.