Patent ID: 7552725

Claim:
A cutting angle adjustment device for stone cutter comprising: a water sink which is a rectangular basin having front and rear ends supported by a pair of racks respectively; a pair of guide rods parallel disposed on the racks and secured by screws; an inverse L-shaped support arm secured to a lateral wall of the water sink abutting to the front end thereof, a circular central hole in a triangular end of a transverse portion of the inverse L-shaped support arm and a vertical arcuate slot nearby the central hole; a stone cutter having a housing, a motor in the housing and a saw blade under the housing; a coupling assembly disposed between said support arm and said stone cutter and having first and second U-shaped coupling means on two ends thereof respectively, wherein the first U-shaped coupling means has an upright projection on inner portion thereof, an axle connection tube with a protrusion on front end thereof is pivotally connected to the first U-shaped coupling means by a bolt, the other end of the axle connection tube is connected to the housing of said stone cutter, a positioning member includes a lower end pivotally connected to the second U-shaped coupling means by a bolt and an upper end connected to the housing by screws, a central tube is connected between a screw hole in a lower portion of the rear end surface of the first U-shaped coupling means and the central hole of said support arm by a bolt and a nut; said upright projection with a front end surface and a rear end surface, on the upper portion of the rear end surface of the upright projection is provided with another screw hole which is pivotally connected to a first hand bolt through the vertical arcuate slot of said support arm, an adjustable plate with a transverse adjustable slot is engaged with the screw hole which passes through the upright projection and is releasably secured by a second hand bolt which passes through the adjustable slot of the adjustable plate, the other end of the adjustable plate is connected to a top of said housing, a spring has one end connected to the upright projection and the other end connected to the rear end of said adjustable plate; a platform has a rectangular body is slidably disposed on the pair of guide rods, two rotors aligned to each other and symmetrically arranged on underside thereof and rotatably sliding on the inner sides of the guide rods, a vertical cutting slit and a slant cutting slit parallel formed in upper surface of the platform; whereby, can adjust vertical position and the slant angle for the stone cutter to conduct a vertical and slant cutting.