Chain-saw sharpening mechanism - has indexing tool with separate fingers for right and left hand teeth

摘要

The sharpening mechanism is for a chainsaw, having a motor-driven grinder disc, a depth adjustment, and an indexing tool for the chain. The tool (5) has two separate fingers (11,11') for left- and right-hand chain teeth (12,13) which they ride over on the reverse stroke. Engagement of a finger with a tooth can be arranged to cause emission of a pneumatic signal. ADVANTAGE - Simplicity and handles chains with right- and left-handed teeth.