| 摘要 |
A motor saw for cutting wood or stone includes a continuous wire loop (18) which carries uniformly-spaced cutting elements (25) and which is tensioned over a saw guide bar (17), from a drive wheel (30) mounted in the machine housing (15) to a loop-guiding sprocket wheel (20) at the outer end of the guide bar (17), said sprocket wheel functioning as a circular saw. As the cutting elements (25) pass over the sprocket wheel (20), they drop into recesses (28) between cog-like sprockets (27) thereon. The sprockets (27) support and guide the wire loop with the cutting elements (25) hanging freely in cutting positions in the recesses (28) between the sprockets. In the case of a duplicated wire loop, a cog claim (51) on the sprockets penetrates between parts (18', 18'') of the loop so as to prevent the freely-hanging cutting elements (25) from twisting. These cutting elements may be irregularly shaped if desired. Given an enlarged diameter, the guide sprocket wheel (20') with the aid of the guide bar (17) attains an enhanced circular-saw effect to a depth that passes beyond the center of the guide sprocket wheel (20'). |
