4. A METHOD OF PERFORMING ORNAMENTAL STICHING INWARDLY OF THE EDGES OF A PIECE OF RELATIVELY THICK LEATHER HAVING A GRAIN SIDE AND A FLESH SIDE COMPRISING BENDING THE MATERIAL SUBSTANTIALLY SHORT OF DOUBLING TO PROVIDE A CURVED RIDGE PORTION PROJECTING FROM THE GRAIN SIDE, AND SEWING LONGITUDINALLY OF THE RIDGE FROM SAID GRAIN SIDE STRAIGHT THROUGH SAID CURVED PORTION INTERMEDIATE THE THICKNESS OF THE MATERIAL WHILE THE MATERIAL IS SO HELD THAT NO BENT PORTIONS ON THE FLESH SIDE ARE IN CONTACT WHEREBY THE STITCHING ENTERS THE SURFACE AT SAID GRAIN SIDE ON ONE SIDE OF THE RIDGE AND EMERGES FROM THE SAME SIDE OF THE MATERIAL ON THE OTHER SIDE OF THE RIDGE WITHOUT PASSING THROUGH THE FLESH SIDE OF THE MATERIAL, AND CAUSING THE STITCHING TO BE SUFFICIENTLY CLOSE TO SAID CONVEX SIDE AS TO PRODUCE AND HOLD A CURVED RIDGE WITHOUT DOUBLING THE MATERIAL.

6. AS A NEW ARTICLE OF MANUFACTURE A SHEET OF RELATIVELY THICK FLEXIBLE MATERIAL SUCH AS LEATHER DISPLACED ALONG A NARROW LINE TO PROVIDE AN ELONGATED LOW SURFACE RIDGE OF UNBROKEN ROUNDED CROSS SECTION ON ONE SIDE WHICH PROJECTS ABOVE THE SURFACE OF THE LEATHER ON SAID SIDE A DISTANCE SHORT OF THAT WHICH WOULD DOUBLE THE DISPLACED MATERIAL, AND THERE BEING A SHALLOW GROOVE OF ARCUATE CROSS SECTION ON THE OPPOSITE SIDE, AND ORNAMENTAL STICHING ALONG EACH SIDE OF SAID RIDGE HAVING CONNECTING STITCHING PASSING INTERMEDIATE THE THICKNESS OF THE MATERIAL FROM ONE SIDE OF SAID RIDGE TO THE OTHER WITHOUT PASSING THROUGH THE OPPOSITE SIDE OF THE MATERIAL AND BEING SUFFICIENTLY CLOSE TO THE SIDE HAVING THE RIDGE TO MAINTAIN SAID LOW RIDGE WITHOUT DOUBLING THE MATERIAL INTO TWO PARALLEL THICKNESSES.