Manufacture of spinnerettes with orifice inserts

Claim 1

A PROCESS OF MANUFACTURING SPINNERETTES WHICH COMPRISES DRILLING THROUGH A PLATE A PLURALITY OF CONNECTED, COAXIAL HOLES OF PROGRESSIVELY DECREASING DIAMETERS; PLACING IN SAID HOLES A HOLLOW INSERT, HAVING A CYLINDRICAL, EXTERNAL WALL PORTION AT ITS FORWARD END, A BOTTOM WALL EXTENDING ACROSS SAID CYLINDRICAL WALL WITH A PREDRILLED SPINNING ORIFICE IN SAID BOTTOM WALL, AND A REARWARD PORTION WITH AN EXTERNAL WALL PORTION WHICH IS OF A DIAMETER LARGER THAN THE DIAMETER OF SAID CYLINDRICAL WALL AND WHICH REARWARD PORTION HAS AN APERTURE THERETHROUGH WHICH IS LARGER THAN THE SIZE OF SAID SPINNING ORIFICE; PRESSING WITH A PRESS DIE AGAINST THE UPPER EDGE OF SAID HOLLOW INSERT TO PRESS FORWARDLY SAID INSERT INTO THE SMALLEST OF SAID HOLES AND THE NEXT LARGER OF SAID HOLES WITH THE CYLINDRICAL WALL OF SAID INSERT IN SLIDING, NON-DEFORMING ENGAGEMENT WITH THE SMALLEST OF SAID COAXIAL HOLES; AND TIGHTLY SEATING SAID REARWARD PORTION OF SAID HOLLOW INSERT IN SAID NEXT LARGER OF SAID COAXIAL HOLES DURING THE PRESSING STEP WITH SAID PRESSING DIE.