Bobbin body having rthread end attaching means

Claim 1

A HOLLOW CONICAL BOBBIN BODY PARTICULARLY FOR SUPPORTING THE WEFT THREAD IN LOOMS WHEREIN THE THREAD IS PULLED BY GRIPPER SHUTTLES FROM THE BOBBINS WHICH REMAIN OUTSIDE OF THE SHED DURING WEAVING, COMPRISING: A CONICAL OUTSIDE SURFACE, SAID OUTSIDE SURFACE HAVING A PORTION ONTO WHICH THE THREAD IS WOUND AND FROM WHICH IT IS UNWOUND, AXIALLY SPACED CIRCUMFERENTIAL GROOVES IN SAID OUTSIDE SURFACE AND DISTRIBUTED OVER THE ENTIRE AXIAL EXTENSION OF SAID PORTION, EACH GROOVE HAVING A SUBSTANTIALLY RADIAL ANNULAR WALL PORTION TOWARD THE SMALL DIAMETER END OF THE BOBBIN BODY AND EXTENDING SUBSTANTIALLY NORMAL TO THE LONGITUDINAL AXIS OF THE BOBBIN BODY, THE REST OF EACH GROOVE BEING A WALL PORTION INCLINED TOWARD THE LARGE DIAMETER END OF THE BOBBIN BODY AND RELATIVE TO SAID CONICAL OUTSIDE SURFACE, A CONICAL ANNULAR SPACING SURFACE INTERPOSED BETWEEN EACH TWO OF SAID GROOVES, SAID SPACING SURFACES HAVING THE SAME CONICITY AS SAID OUTSIDE SURFACE AND FORMING PART THEREOF, THE INTERSECTION OF SAID SPACING SURFACES AND OF SAID RADIAL WALL PORTIONS FORMING ANNULAR EDGES FOR PREVENTING SLIPPING OF THE LAST UNWOUND LAYERS OF THREAD ON SAID OUTSIDE SURFACE, AN END SURFACE AT THE LARGE DIAMETER END OF THE BOBBIN BODY, AND A SLOT FORMED BY A TONGUE-LIKE PORTION OF THE BOBBIN BODY FOR MAKING FAST A THREAD END ON THE BOBBIN BODY, SAID SLOT EXTENDING THROUGH SAID END SURFACE SECANTLIKE INTO THE BOBBIN BODY BETWEEN THE INSIDE AND OUTSIDE SURFACES OF THE HOLLOW BOBBIN BODY AND BETWEEN TWO CIRCUMFERENTIALLY SPACED LOCATIONS ON SAID OUTSIDE SURFACE.