| 摘要 |
A chisel for cutting grooves, recesses and penetrations into brick structure without producing dust. The chisel comprises a handle with tapers to form a leading edge (A). The tapered region has a curved upper surface (C) with a V-cut or concave section, and a flat lower surface angled at thirteen degrees (13 DEG ) to the longitudinal axis of the handle. The leading edge of the chisel has a forty five degrees (45 DEG ) bevel (B) and a recess (D) located at the blade face, on the longitudinal axis of the chisel and recessed inwards towards the chisel body. The leading edge (A) has a V-shape from plan view, with the recess (D) forming the base of the V, and the lateral ends projecting away from the chisel body. The recess (D) allows material particles to be removed while the chisel is used. The chisel may be fifteen millimeters (15 mm) to forty millimeters (40 mm) wide and may be made of water-hardened carbon-vanadium tool steel, or a similar material. The chisel eliminates any sawing operation to cut grooves, recesses and penetrations into brickwork. The design of the chisel concentrates an area of impact and allows positive control of the cut. The operation generates no dust. |
