| 摘要 |
PCT No. PCT/AU91/00328 Sec. 371 Date Sep. 17, 1993 Sec. 102(e) Date Sep. 17, 1993 PCT Filed Jul. 24, 1991 PCT Pub. No. WO92/02345 PCT Pub. Date Feb. 20, 1992The disclosure is directed to a method of masonary cutting and to the structure of a novel tool. The tool has twin outwardly splayed and flared chisel like blades which join the handle at a recess groove for waste ejection. The blades are beveled only on their upper edges and are driven forward by hammering on the remove handle end. The method comprises attacking a flat masonary surface at an angle greater than 5 degrees (preferably at 13 degrees) with twin divergent cutting edges beveled only on the upper surfaces and having a flat lower surface. Material is imploded between the blades and ejected at the recess groove without dust formation.
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