| 摘要 |
Mechanism for locking and advancing the blade of a cutting instrument. Mechanism distinguished by a rectilinear blade-holding sheath with longitudinal slit having a series of notches on its lower edge, together with a slider to maintain the locking and the advance of the blade, said slider being molded in one piece of synthetic material comprising structures for supporting the blade, a means of elastic return, and a means of locking by a ratchet mechanism in the notches of the shaped blade-carrier. Application: industrial manufacturing of cutting instruments, particularly of the "cutter" type.
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