Thread-cutting device in linking machines

Claim 1

IN A LINKING MACHINE OF THE TYPE IN WHICH THREAD IS FED TO THE SEWING NEEDLE THEREOF THROUGH A THREAD TENSIONING MEANS INCLUDING A PAIR OF ELEMENTS WHICH PRESS AGAINST A THREAD PASSING THEREBETWEEN, THE IMPROVED CUTTING MEANS COMPRISING A STATIONARY BLADE MOUNTED AT A PREDETERMINED SPACED DISTANCE FROM THE NEEDLE OF SAID MACHINE, A ROTATABLE ARM HAVING MEANS FOR CONTACTING SAID THREAD AT THE OUTER END THEREOF WHICH IS ADAPTED TO MOVE IN AN ARCUATE PATH FROM A POSITION ADJACENT TO BUT ON THE OPPOSITE SIDE OF SAID NEEDLE WITH RESPECT TO THE BLADE TO A POSITION AT AND BEYOND THE CUTTING EDGE OF SAID BLADE, MEANS FOR MOUNTING SAID ARM FOR ROTATION, SAID LAST-NAMED MEANS INCLUDING MEANS FOR ROTATING SAID ARM IN SAID ARCUATE PATH COMPRISING A HIGH PITCH SCREW MEANS AND A DIE MEANS WHICH FITS SAID HIGH PITCH SCREW MEANS, A FIRST ONE OF SAID SCREW MEANS AND DIE MEANS FORMING THE AXIS OF ROTATION OF SAID ARM, THE SECOND ONE OF SAID SCREW MEANS AND DIE MEANS BEING MOUNTED ON SAID MACHINE TO MOVE AXIALLY WITH RESPECT TO THE FIRST ONE OF SAID MEANS, SPRING MEANS NORMALLY HOLDING SAID ROTATABLE ARM IN ITS POSITION ADJACENT TO SAID NEEDLE WHEREBY PRESSING SAID SECOND ONE OF SAID SCREW MEANS AND DIE MEANS OPERATES THE ARM TO MOVE SAID THREAD BEYOND THE EYE OF THE NEEDLE UP TO THE BLADE AND TO CUT THE THREAD AT THE BLADE.