Tool for cutting helicoidally along a cylindrical sheath, comprises body which rotates about sheath axis and houses spring loaded rod which bears cutting blade and adjustable stop

摘要

The tool blade (2) is mounted on the head (7) of a rod (4)). The rod slides within a ring (5) and the head is distanced from it by a spring (9). The amount of cut made is controlled by a stop block (10,20) which is rectangular and has four faces (10) each giving a different clearance to the blade cutting edge. The block is guided (23,24) into a particular position and secured by a set screw and washer/indentation (22)