Split cone fixing for blade of percussion tool - has self-locking half-segments to enable tool to be changed quickly

摘要

The hand held percussion tool has the blade (24) supported in a split cone (11) (12). The half segments of the cone are held together by a spring ring (19) which fits in a groove (18). After the blade (24) has been inserted in the cone (10, 11) the spring (4) presses it downwards against the tapered bore (2) of the housing (1) so that the blade is firmly locked in position. This type of fixing enables the blade to be changed rapidly and is particularly useful for preparing the edges of steel plates for welding, which requires frequent changes of blades.