Method of making vibration damped turbo machinery

Claim 1

IN A METHOD OF MAKING A VIBRATION DAMPED TURBO MACHINE THE STEPS COMPRISING: (1) FORMING FIRST AND SECOND BLADES EACH HAVING A PAIR OF FACES; (2) FORMING AN APERTURE IN A LEADING REGION OF SAID FIRST BLADE AND AN APERTURE IN A TRAILING REGION OF SAID SECOND BLADE; (3) SECURING SAID BLADES IN SPACED ADJACENT TO EACH OTHER ON A ROTOR SHAFT; (4) ASSEMBLING A LASHING PIN EXTENDING LOOSELY THROUGH SAID APERTURES IN SAID FIRST AND SECOND BLADES, SAID LASHING PIN BEING FORMED BY; (A) FORMING A ROD PORTION FOR ASSEMBLY BETWEEN SAID APERTURES, (B) FORMING A HEAD PORTION ON SAID ROD PORTION ADJACENT ONE END THEREOF, SAID HEAD PORTION BEING FORMED WITH A SHOULDER OF A SIZE GREATER THAN THE SIZE OF THE APERTURE IN ONE OF SAID BLADES AND BEING ASSEMBLED WITH SAID SHOULDER ADJACENT THE FACE OF SAID ONE OF SAID BLADES MOST REMOTE FROM THE OTHER OF SAID BLADES (C) FORMING ANOTHER HEAD PORTION ON SAID ROD PORTION ADJACENT THE OTHER END THEREOF, SAID SECOND HEAD PORTION BEING FORMED WITH A SHOULDER THEREON OF A SIZE GREATER THAN THE SIZE OF THE APERTURE IN THE OTHER OF SAID BLADES, AND BEING ASSEMBLED WITH SAID SHOULDER ADJACENT THE FACE OF SAID OTHER BLADE MOST REMOTE FROM SAID ONE BLADE, AND (D) SAID LASHING PIN BEING FORMED WITH PORTIONS EXTENDING INWARDLY OF SAID SHOULDERS OF A SIZE SO THAT SAID BLADES MAY SLIDE TOWARD EACH OTHER IN FRICTIONAL ENGAGEMENT WITH SAID LASHING PIN AND ARE RESTRAINED FROM EXCESSIVE MOVEMENT AWAY FROM EACH OTHER BY THE SHOULDERS ON SAID LASHING PIN.