Patent ID: 6923104

Claim:
A cutting head assembly comprising: a cutting head including a first head member including a first set of returns, the first head member adjustably connected to a second head member including a second set of returns; a cutting member connected to the cutting head, wherein the cutting member is formed of a strip of material having a thickness in the range of 0.005 inches to 0.0015 inches, a width in the range of 0.375 inches to 0.625 inches, a first end, a second end and a length, and further wherein the first and second ends of the cutting member are secured to the cutting head, the length of the cutting member being positioned about the first set of returns and the second set of returns in a serpentine configuration so that a plurality of leg segments of the cutting member extend across an aperture formed through the cutting; and a cutting member tensioning device disposed between and adjustably engaging the first head member and second head member the screw including a longitudinal axis oriented substantially parallel to a longitudinal axis of each of the leg segments of the cutting member extending across the aperture for adjusting a distance between the first set of returns and the second set of returns and tensioning the cutting member.