Patent ID: 7882773

Claim:
An apparatus for cutting a roll of sheet material, comprising: a chain saw having an elongated blade, said elongated blade comprising sides that are generally parallel to one another, an end attached to a driving mechanism, and a free distal end that is shorter than and generally perpendicular to the sides and located opposite the attached end, wherein said blade is substantially planar and said blade is positioned substantially parallel to a circumference of said roll and substantially transverse to a central longitudinal axis of side roll; a cutting guide attached to the elongated blade and positioned to direct the distal end of the elongated blade into the roll of sheet material such that a chain crossing the distal end of the elongated blade plunge cuts the roll of sheet material along a linear insertion path that is substantially co-linear with a longitudinal axis of said elongated blade; at least one positioning guide configured to adjust the position of the cutting guide and the elongated blade relative to the roll of material; and a support positioned to hold a first end of the roll of material proximate to the elongated blade at only one end.