Patent ID: 8420172

Claim:
A method of manufacturing shingles formed of cellular polyvinyl chloride, wherein the method comprises: providing a brushing assembly, wherein the brushing assembly comprises a first brush adjacent to a second brush, and a third brush adjacent to a fourth brush, wherein the first and second brushes are oppositely situated to the third and fourth brushes: providing a cross cut saw assembly, wherein the cross cut saw assembly comprises a cross cut saw; providing a parting saw assembly, wherein the parting saw assembly comprises a band saw comprising a first wheel opposite to a second wheel, and a band saw blade disposed around the first wheel and the second wheel; providing a sizing saw assembly, wherein the sizing saw assembly comprises an infeed conveyor in line with a saw blade; providing a cellular polyvinyl chloride board comprising a top face opposite to a bottom face, a front face opposite to a back face, and a first lateral face opposite to a second lateral face; feeding the cellular polyvinyl chloride board through the brushing assembly; applying the first and second brushes to the top face of the board to create a textured grain pattern on the top face; applying the third and fourth brushes to the bottom face of the board to create a textured grain pattern on the bottom face; feeding the cellular polyvinyl chloride board from the bushing assembly to the cross cut saw assembly in a direction parallel to the board's textured grain pattern; cutting the cellular polyvinyl chloride board crosswise to form a plurality of shingle length bolts comprising passing the cellular polyvinyl chloride board through the cross cut saw; feeding the plurality of shingle length bolts into the parting saw assembly in a direction parallel to the bolt's textured grain pattern; creating a pair of profiled boards by passing a bolt from the plurality of shingle length bolts widthwise through the band saw; feeding the pair of profiled boards through the sizing saw assembly via the infeed conveyor; and cutting the pair of profiled boards via the saw blade to create a desired sized shingle.