Knife and blade advance and locking mechanism therefor
AssigneeStanley-Mabo S.A.
InventorsMichel C. Quenot, Louis Scandella
Life of this patent
Estimating the term…
Abstract
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.
Claims9
A knife comprising an elongated tubular blade-carrying sheath open at one end and having a longitudinally extending slot in the front wall thereof, a blade having a cutting edge on a longitudinal edge of the blade and being disposed within the sheath for relative longitudinal sliding movement, a combined sliding and locking member having means for releasably mounting one end of the blade with the cutting edge directed downwardly, the lower edge of the slot having a series of longitudinally spaced notches, a detent on said member selectively engageable with said notches for locking said member in adjusted position, said member having a biasing means for biasing the member downwardly to urge said detent into a notch, the detent being disengaged from a notch when the member is lifted upwardly against the bias of said biasing means.
Dependencies are inferred from the claim text.