A rolling plate assembly for attachment to a portable rotary power saw have having a saw blade, comprising:
- a. a one piece base molded out of a single piece of fiber enriched plastic having a front housing member with a leading edge having a metal plate molded into the leading edge and a rear housing member with a rear edge, the two housing members interconnected by a first longitudinal sidewall having a raised stabilizer fin, a parallel oppositely disposed second longitudinal sidewall having a raised stabilizer fin, a horizontal flat plate section extending between the front housing member and the rear housing member, at least one stabilize tube formed into the horizontal flat plate section, and a saw blade penetration slot extending through the horizontal flat plate section;
- b. each housing member having a pair of oppositely disposed wheel bearing seats, the front housing member rotatably supporting a front wheel having a multiplicity of measurement denominations thereon and having an interior wheel shaft terminating in a pair of wheel bearings at either end, the front wheel rotatably and removably supported in the front housing by insertion of the wheel bearings in into a front housing bearing seat, the front wheel having a given diameter, a diameter of an entrance to the front housing bearing seat being smaller than the diameter of the front wheel and expanding to an interior chamber having at least the same diameter as the front wheel, the rear housing member rotatably supporting a rear wheel having an interior wheel shaft terminating in a pair of wheel bearings at either end, the rear wheel rotatably and removably supported in the rear wheel housing by insertion of the wheel bearing into a rear housing bearing seat, the rear wheel having a given diameter, a diameter of an entrance to the rear housing bearing seat being smaller than the diameter of the rear wheel and expanding to an interior chamber having at least the same diameter of the rear wheel;
- c. a gear housing attached to said front housing, a flexible adjustment member retained at one end to the gear housing, a bevel adjustment lever retained at the opposite end of the flexible adjustment member, the bevel adjustment lever having a handle at one end and a multiplicity of teeth along its opposite end, a calibrated bevel bracket rotatably attached at one end to the flexible adjustment member and having a multiplicity of teeth along its opposite end which intermeshes with the teeth of the bevel adjustment lever, the calibrated bevel bracket having saw retaining means extending transversely therefrom;
- d. a tilt bracket housing formed on said rear housing and rotatably supporting an arcuate plunge bracket having an interior arcuate slot;
- e. said first and second longitudinal sidewalls each having a cutting guide housing thereon, a cutting guide having a frame member having a multiplicity of marking denominations thereon supporting a wheel housing at one end, the wheel housing rotatably retaining a pair of spaced apart wheels, a portion of the cutting guide frame member remote from the wheel housing retained in the cutting guide housings and affixed to at least one cutting guide housing so that the wheels extend in a plane perpendicular to the one piece frame;
- f. a power saw retained adjacent one end by fastening means connected to the saw retaining means of the calibrated bevel bracket and retained adjacent the saw's opposite end by fastening means connected through the arcuate slot of the arcuate plunge bracket, the saw blade extending through the penetration slot;
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- g. the wheels rotatably supported in the first and second housing of the one piece frame enable the saw to be rolled on a surface of an object to be cut by the saw blade during a cutting operation, the angle of the saw blade being rapidly changed by moving the bevel adjustment lever so that teeth of the bevel adjustment lever and calibrated bevel bracket are disengaged and rotating the calibrated bevel bracket to a desired angle and releasing the bevel adjustment lever so that the teeth are again intermeshed, the wheels of the cutting guide pressed against a vertical surface of the object to be cut so that the saw will create a straight cut and kickback of the saw and torsional rotation of the saw is reduced.