Method for placing and trimming packing inserts and the like

Claim 1

IN THE MANUFACTURE OF A RELATIVELY RIGID MEMBER HAVING AT ONE EDGE A CONCAVE RECESS WITH A SURFACE OF NO GREATER CIRCUMFERENTIAL EXTENT THAN A SEMI-CYLINDER, A CIRCUMFERENTIALLY EXTENDING SEAT GROOVE IN SAID SURFACE WITH OPPOSITE ENDS OPENING AT SAID EDGE THROUGH FLAT EDGE SURFACES, AND A FLEXIBLE ELEMENT OF ELONGATED MATERIAL SEATED IN SAID GROOVE AND HAVING OPPOSITE ENDS TERMINATING FLUSH WITH SAID FLAT SURFACES, THE METHOD OF ASSEMBLING SAID MEMBER AND ELEMENT COMPRISING; PLACING AN EXCESS LENGTH OF THE MATERIAL ON SAID EDGE IN THE PLANE OF SAID GROOVE; ENGAGING SAID LENGTH WITH A FORMING ELEMENT HAVING A CONVEX SURFACE OF CURVATURE WHICH MAY BE BROUGHT INTO PARALLELISM WITH THE CONCAVE SURFACE; MOVING THE FORMING ELEMENT INTO SAID RECESS WHILE MAINTAINING SAID ENGAGEMENT UNTIL SUCH PARALLELISM IS OBTAINED THEREBY TO SEAT SAID FLEXIBLE ELEMENT IN THE GROOVE WITH OPPOSITE ENDS PROJECTING THEREFROM AND TO FORM ITS EXPOSED SURFACE TO THE SHAPE OF THE CONVEX SURFACE; AND CUTTING THE PROJECTION ENDS EACH FLUSH WITH A RESPECTIVE SAID FLAT SURFACE BY BLADES GUIDED IN SAID FORMING MEMBER TO MOVE WITH CUTTING EDGES SUBSTANTIALLY IN THE PLANES OF RESPECTIVE FLAT SURFACES.