| 摘要 |
A cutting tool having a blade (16) and a member (24) which is biassed towards a safety position in which the member forms a guard for the blade, but which may be displaced to expose the blade by bringing the tool into cutting contact with a workpiece. The cutting tool comprises a locking mechanism which has a trigger (52, 54) which must be moved from a first position to a second position to release the guard member (24) from its safety position and which is arranged such that each time the guard member is released from its safety position, is displaced through a predetermined distance, and then returns to its safety position, the guard member will become locked in place regardless of the position of the trigger.
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