摘要 |
<p>The cutter forms a pyramidal point with four faces on the end of a wooden post. to aid driving into the ground. It has two knives (5), each in a vertical plane, the angle between the planes being adjustable between 10 and 90 deg. The knives are 'slid at the desired angle of inclination. A guide bar can be provided, mounted in front of the actuating ram (2), to hold the knives on the desired lines and centre the post automatically.</p> |