Patent ID: 6868612

Claim:
The combination of a cutting guide device and a conventional type hand held circular saw, wherein said saw comprises a base ( 38 ) having a planar slide surface ( 52 ) and a back edge ( 55 ) and having a disc shaped cutting blade ( 29 ) mounted on the drive shaft ( 54 ) of an electric motor ( 56 ) and lying in a variable cutting plane ( 27 ), wherein a mounting structure is provided on the saw motor for pivotally mounting the motor on said base for angular adjustment with respect to said base to orient said cutting plane ( 27 ) with respect to said slide surface at an angle of between about 90° and about 45°, wherein said saw base is provided with a second guide shoulder means ( 41 ) aligned substantially parallel to said cutting plane ( 27 ) and having a portion extending below said slide surface, and wherein said device comprises a platform structure generally designated ( 10 ) having a top portion ( 11 ) providing a substantially planar top surface ( 12 ) on which said slide surface ( 52 ) can rest and slide, said platform structure further having a longitudinal dimension ( 22 ) and a lateral dimension ( 24 ), first guide shoulder means ( 26 ) on said platform means and extending downwardly from said top surface ( 12 ) and along said lateral dimension ( 24 ), a pair of laterally spaced cooperating elevation flanges ( 28 ), ( 30 ) affixed to and extending downwardly from said top portion ( 11 ), a clamping mechanism ( 32 ) on said device adapted to releasably affix said platform structure to opposing edge portions ( 31 ) of a supporting structure ( 34 ) at a prescribed height thereabove and at a prescribed angle α with respect to said supporting structure, whereby the combination of the conventional angle setter of and the α angle adjustment structure of the guide device allows an angle cut of up to about 80° from the vertical, wherein said first guide should means ( 26 ) on said platform structure is adapted to engage said second guide shoulder means ( 36 ) on said base ( 38 ) for guiding said saw in a straight line laterally across said supporting structure.