Patent ID: 6932075

Claim:
A blade angle adjustment device for a stone cutter comprising: a framed base composed of a plurality of longitudinal bars, a plurality of transverse bars, a pair of outmost longitudinal bars and a pair of guide bars spaced longitudinally, two pairs of supports on plates at two ends of the base and a tool plate at a right side of said base; a support arm having a lower portion connected to the front portion of an outmost bar on a right side of said base by screws, a first screw hole in a triangular depression and an oblong hole in a lateral extension on upper portion thereof; a working table having a plurality of rollers spacedly disposed on underside and slidably disposed on said guide bars of said base, a vertical cutting groove and a slant cutting groove spacedly formed in a upper surface thereof; a L-shaped link having a longitudinal portion, a transverse portion, a pair of second screw holes spacedly formed in the longitudinal portion respectively engaged with the first screw hole and the oblong hole of said support arm and respectively secured by a screw and a first swivel lock which has a threaded shank inserted through the oblong hole and screwed with a second screw hole and a swivel knob on outer end thereof, a third screw hole and an arcuate slot spacedly formed in the transverse portion thereof and a pair of internally threaded large and small connection rods having their front ends respectively engaged with the third screw hole and the arcuate slot and secured by a second swivel lock and handled screw; a cutting mechanism having a motor protected by an upper housing and lower housing, a large through hole and small through hole spacedly formed in a front wall of said upper housing for respectively securing the rear ends of said large and small connection rods, a circular blade perpendicularly connected to an axis of said motor and protected by a guard on top, said guard being adjustably secured to a right wall of said upper housing by a third swivel lock which includes a threaded shank and swivel knob on outer end of the shank; whereby, said first swivel lock vertically slides within said oblong hole, the elevational angle of said cutting mechanism is defined and fixed by said small connection rod in upper end of said arcuate slot, to define a 45° slant angle of said circular blade.