Improved yarn handling sucker gun

Claim 1

A YARN-HANDLING DEVICE COMPRISING AN AIR INLET TUBE, AN AIR OUTLET TUBE HAVING AN OUTER EXIT END AND AN INNER END, A PASSAGEWAY BETWEEN SAID INLET AND SAID OUTLET TUBES, THE OUTER EXIT END OF SAID OUTLET TUBE PROVIDED WITH AN ELONGATED SECTION OF SUBSTANTIALLY CONSTANT CROSS-SECTIONAL AREA, AN AUXILIARY AIR AND YARN INLET TUBE HAVING AN OUTER END AND AN INNER END, ONE OF SAID AIR OUTLET AND AUXILIARY AIR AND YARN INLET TUBES MOUNTED FOR MOVEMENT RELATIVE TO THE OTHER, SAID INNER END OF SAID AIR AND YARN INLET TUBE MOUNTED TO FORM IN COOPERATION WITH THE INNER END OF SAID OUTLET TUBE, A VARIABLE ANNULAR ORIFICE, SAID ORIFICE FORMING, IN ONE CONDITION OF ITS VARIATION AND IN COOPERATION WITH SAID ELONGATED SECTION, A CONVERGINGDIVERGING NOZZLE, SAID DEVICE FURTHER COMPRISING A CONDUIT CONNECTING SAID AIR INLET TUBE TO A SOURCE OF HIGH PRESSURE AIR, THE PRESSURE OF THE AIR IN THE INLET TUBE DURING OPERATION OF THE DEVICE, THE CONTOUR OF SAID NOZZLE, AND THE ELONGATED SECTION EACH COOPERATING TO PRODUCE SUPERSONIC AIR FLOW IN SAID NOZZLE AND MAINTAIN EXTREMELY HIGH AIR FLOW VELOCITIES SUBSTANTIALLY THROUGHOUT THE ELONGATED SECTION OF SAID OUTLET TUBE, AND MANUALLY ACTUATABLE PNEUMATIC MEANS TO RAPIDLY AND SELECTIVELY VARY THE LONGITUDINAL RELATIVE POSITIONS OF SAID OUTLET TUBE AND SAID AUXILIARY INLET TUBE IN ORDER TO VARY THE ANNULAR ORIFICE, THE IMPROVED DEVICE FURTHER COMPRISING A BAFFLE MEANS COOPERATING WITH SAID ORIFICE FOR CREATING A ZONE OF GREAT AGITATION IN THE AIR FLOWING THROUGH SAID NOZZLE AND SAID OUTLET TUBE.