| 摘要 |
<p>An extendable stripper blade attached to a jaw of a cutting tool is provided with means for biasing the blade in a retracted position while the sharpened end of the blade is encompassed within a protective cover preventing inadvertent contact with the blade during handling and use. The biasing means may comprise a spring member cooperative with support means on both the blade and the cover, the latter having a housing portion overlying the spring. The blade means may be further provided with a stop member releasably engaging the spring housing in a first or lock position, and manipulable to a release position to permit the retracted blade to be extended for use.</p> |
