Method and apparatus for drawingframe blending of slivers in the preparation of yarncomposed of different lengths of fibers

Claim 2

IN THE DRAWING-FRAME PROCESS OF DRAFTING A PLURALITY OF PARALLEL SLIVERS AND CONDENSING THE SLIVERS INTO A SINGLE SLIVER, THE IMPROVED METHOD OF FEEDING THE SLIVERS TO THE BACK ROLLS OF THE DRAWING FRAME FOR BLENDING SEVERAL SLIVERS OF FIBERS (C) WITH A GREATER NUMBER OF SLIVERS OF FIBERS (D) OF LONGER FIBER LENGTH THAN FIBERS (C) WHICH COMPRISES CONDUCTING THE UNCONDENSED SLIVERS OF FIBERS (C) IN PARALLEL RELATIONSHIP TO SAID BACK ROLLS, CONDENSING THE SLIVERS OF FIBERS (D) INTO A FLAT COMPACT LAYER OF PARALLEL SLIVERS TO FORM A DRAFTING APRON FOR FIBERS (C) AND CONDUCTING SAID LAYER TO THE BACK ROLLS BENEATH THE SLIVERS OF FIBER (C) TO COMBINE THE TWO TYPES OF SLIVERS IN LAMINAR JUXTAPOSITION WITH THE SLIVERS OF FIBER (C) ENTIRELY ON TOP OF THE SLIVER LAYER OF FIBERS (D), AND FEEDING THE COMBINATION INTO THE DRAWING-FRAME FOR DRAFTING THE SLIVERS INTO A SINGLE SLIVER.

Claim 3

IN DRAWING-FRAME APPARATUS FOR DRAFTING AND CONDENSING FIBERS INTO SLIVER, THE APPARATUS INCLUDING SEPARATELY DRIVEN BACK AND FRONT DRAFTING ROLLS AND MEANS FOR FEEDING SLIVERS OF FIBERS TO THE BACK DRAFTING ROLLS, THE IMPROVEMENT OF SLIVER GUIDING SURFACE HAVING A HORIZONTAL BOTTOM AND VERTICAL SIDES, THE SIDES CONVERGING IN THE DIRECTION OF SLIVER TRAVEL FROM A WIDTH OF ABOUT 5 INCHES TO A WIDTH OF ABOUT 2 1/2 INCHES TO CONDENSE A PLURALITY OF SLIVERS INTO A COMPACT LAYER OF PARALLEL SLIVERS FEEDING TO SAID BACK ROLLS, AND AN UPPER GUIDE SURFACE HAVING A HORIZONTAL BOTTOM AND VERTICAL SIDES SPACED ABOUT 2 INCHES APART, THE UPPER GUIDE BEING SPACED ABOVE AND ALIGNED WITH A LOWER GUIDE TO CONDUCT A DIFFERENT PLURALITY OF SLIVERS IN PARALLEL RELATIONSHIP AND TO DEPOSIT THE SLIVERS ON TOP OF THE SLIVER LAYER FROM THE LOWER GUIDE TO FEED IN LAMINAR JUXTAPOSITION TO THE BACK ROLLS FOR INTIMATE BLENDING.

Claim 4

IN DRAWING-FRAME APPARATUS FOR DRAFTING AND CONDENSING FIBERS INTO SLIVER, THE APPARATUS INCLUDING SEPARATELY DRIVEN BACK AND FRONT DRAFTING ROLLS AND MEANS FOR FEEDING SLIVERS OF FIBERS TO THE BACK DRAFTING ROLLS, THE IMPROVEMENT OF SLIVER GUIDING SURFACE HAVING A HORIZONTAL BOTTOM AND VERTICAL SIDES, THE SIDES CONVERGING IN THE DIRECTION OF SLIVER TRAVEL FROM A WIDTH OF ABOUT 5 INCHES TO A WIDTH OF ABOUT 2 1/2 INCHES TO CONDENSE A PLURALITY OF SLIVERS INTO A COMPACT LAYER OF PARALLEL SLIVERS FEEDING TO SAID BACK ROLLS, AND AN UPPER GUIDE SURFACE HAVING A HORIZONTAL BOTTOM AND VERTICAL SIDES SPACED ABOUT 2 INCHES APART, THE UPPER GUIDE BEING SPACED ABOVE AND ALIGNED WITH A LOWER GUIDE TO CONDUCT A DIFFERENT PLURALITY OF SLIVERS IN PARALLEL RELATIONSHIP AND TO DEPOSIT THE SLIVERS ON TOP OF THE SLIVER LAYER FROM THE LOWER GUIDE TO FEED IN LAMINAR JUXTAPOSITION TO THE BACK ROLLS FOR INTIMATE BLENDING.