Tip shearing pattern in carpet
View Patent ↗An embossed surface is positioned opposite a pile fabric from a tip shearing apparatus. As the blades of the tip shearing apparatus contact the carpet, the embossed surface selectively elevates selected portions of carpet relative to unselected portions so that a design corresponding to the design of the embossed surface is inversely cut into the carpet.
1. A method of shearing selected portions of carpet pile extending from backing of pile fabric to cut at least one levels of pile height relative to uncut pile, comprising the steps of:
a. providing a shearing apparatus positioned for shearing tips of carpet pile extending from a pile fabric tufted through a backing with at least one blade, the greater a distance that said tips extend from said backing, the greater an amount is sheared;
b. feeding said pile fabric to said shearing apparatus;
c. while shearing said pile fabric, selectively elevating portions of the pile fabric with an embossed surface positioned opposite the pile fabric from the shearing apparatus; and
d. shearing said elevated pile portions with said shearing apparatus, such that elevated pile is cut to at least one different height shorter than unelevated pile, said unelevated pile containing loops which remain uncut and extend an elevation above the cut pile.
2. The method of claim 1 wherein the step of shearing provides a design in the pile fabric substantially inverse to a design of the embossed surface.
3. The method of claim 1 wherein the embossed surface is located on a roller, and the roller rotates as the pile fabric is fed across the roller spaced apart from the shearing apparatus.
4. The method of claim 3 wherein the pile fabric is continuously fed intermediate the embossed surface and the roller.
5. The method of claim 1 wherein the step of elevating selected pile portions comprises elevating said selected pile portions to a predetermined elevation.
6. The method of claim 1 wherein the embossed surface is driven by a roller with said embossed surface disposed intermediate the roller and the shearing apparatus.
7. The method of claim 1 wherein the selectively elevated portions of the embossed surface are positioned relative to selected portions of a first elevation of at least two elevations of pile fabric opposite of the shearing apparatus.