Thread feed control device for textile machinery

Claim 1

A TENSION DEVICE FOR A WEFT THREAD TO BE SUPPLIED TO A SHUTTLELESS WEAVING LOOM, COMPRISING A STATIONARY BASE PLATE, A TABLE PORTION PROJECTING FROM SAID BASEPLATE AND PROVIDING A SMOOTH EVEN SURFACE NORMAL TO SAID BASEPLATE, A PLURALITY OF GUIDE MEMBERS PROJECTING FROM SAID BASEPLATE AND ENGAGEABLE WITH A THREAD TO DEFINE A STRAIGH PATH OF THREAD DISPLACEMENT EXTENDING IN SPACED PARALLEL RELATIONSHIP TO SAID SMOOTH EVEN SURFACE, AN ADJUSTABLE BAR MEMBER SUPPORTED FROM SAID BASEPLATE ABOVE SAID GUIDE MEMBERS, SAID BAR MEMBER HAVING A FACE OPPOSITE SAID SMOOTH EVEN SURFACE OF SAID TABLE PORTION, A PAIR OF LEAF SPRINGS OF LIGHT SPRING RATE HAVING ONE OF THEIR ENDS ATTACHED TO LONGITUDINALLY SPACED POINTS OF SAID FACE OF SAID BAR MEMBER AND HAVING THEIR FREE ENDS PROJECTING TOWARD SAID SMOOTH EVEN SURFACE BETWEEN TWO SUCCESSIVE GUIDE MEMBERS, SAID LEAF SPRINGS HAVING ROUNDED FREE END PORTIONS ENGAGEABLE WITH SAID THREAD WHEREBY TO URGE THE THREAD SECTIONS EXTENDING BETWEEN THE INDIVIDUAL GUIDE MEMBERS TOWARD SAID SMOOTH EVEN SURFACE AND FORCE THE THREAD TO FOLLOW A SINUOUS PATH, AND MEANS FOR ADJUSTING THE POSITION OF SAID BAR MEMBER BOTH IN OVER-ALL SPACING RELATIVE TO SAID SMOOTH EVEN SURFACE AND IN ANGULAR RELATION WITH RESPECT THERETO.