Thread tensioning means for textile machines

Claim 1

A THREAD TENSIONING DEVICE COMPRISING A FIRST FRAME AND A SECOND FRAME LYING IN A PLANE PARALLEL TO THE PLANE OF SAID FIRST FRAME, A PLURALITY OF THREAD TENSIONING PINS EXTENDING FROM EACH OF SAID FRAMES, SAID PINS BEING DISPOSED IN OPPOSED STAGGERED RELATION, SAID SECOND FRAME HAVING AN OPENING THEREIN ADJACENT ONE END THEREOF, AND A PIVOT PIN EXTENDING THROUGH SAID OPENING AND PROJECTING FROM OPPOSITE SIDES OF SAID SECOND FRAME AND HAVING POINTED ENDS, A U-SHAPED YOKE CARRIED BY THE UPPER PART OF SAID FIRST FRAME, OPPOSED CONICAL BEARINGS CARRIED BY SAID YOKE AND RECEIVING THE ENDS OF SAID PIVOT PIN, SAID FIRST FRAME HAVING AN UPPER ARM WITH A GENERALLY HORIZONTAL SLOT THEREIN, ADJUSTABLE CLAMP MEANS PASSING THROUGH SAID SLOT AND CLAMPING SAID YOKE TO SAID FIRST FRAME IN AN ADJUSTED POSITION WHEREBY THE RELATIVE POSITION OF SAID PIVOT PIN WITH RESPECT TO SAID FIRST FRAME MAY BE VARIED TO VARY THREAD TENSION, A ROD EXTENDING FROM THE UPPER END OF SAID SECOND ARM GENERALLY NORMAL TO THE AXIS OF SAID PIVOT PIN, A WEIGHT ADJUSTABLY CARRIED BY SAID ARM TO EFFECT THE PIVOTING OF SAID SECOND FRAME RELATIVE TO SAID FIRST FRAME TO VARY THREAD TENSION, AND MEANS FOR DAMPENING THE PIVOTING OF SAID SECOND FRAME.