Blade-holding cutting device

Abstract

A cutting blade holding handle for a segmented removable blade. A cutting blade holding handle having a rectilinear hollow body with curved outer faces and having an inner guide consisting of two identical grooves facing each other to slidably mount a removable blade and a lower parallel auxiliary groove which mounts a unitary slider connected to the blade and having a finger piece provided with two oppositely inclined faces for manipulating the blade, said body also having between the blade and its rear face a blade wedging mechanism having external control and latching means.

I claim: 
     
       1. In a cutting blade holding handle having a segmented removable blade comprising a unitary generally rectangular hollow body formed of a molded plastics material and having a longitudinal slot extending through one side wall from one end thereof, a pair of facing longitudinal grooves within said hollow body terminating in an end slot through the other end of said body to slidably mount the blade to advance and retract the blade through said end slot, a series of notches formed along one edge of said longitudinal slot, and a unitary slider adapted to control the longitudinal movement of the blade, the improvement comprising a wedging member engageable with one side of the blade, said hollow body having an inclined interior wall adjacent said end slot, and said wedging member having a bevelled end engageable therewith to frictionally engage and apply a lateral pressure against the blade and means to slide said wedging member from an inactive position in which the wedging member does not apply lateral pressure to the blade to an active position wherein the wedging member is slid up the inclined interior wall adjacent said end slot and the bevelled end of said wedging member frictionally engages and applies a lateral pressure against the blade to lock the blade in position. 
     
     
       2. A device according to claim 1 wherein said wedging member has a finger piece extending through a cutout in the side wall of said handle opposite said longitudinal slot. 
     
     
       3. A device according to claim 2 wherein said finger piece is provided with a latch to releasably secure said wedging member in one of its longitudinal positions. 
     
     
       4. A device according to claim 1 including an auxiliary groove for mounting said slider formed in the edge of said longitudinal slot opposite the edge having said notches. 
     
     
       5. A device according to claim 1 in which said .Iadd.slider has a .Iaddend.finger piece .[.is.]. provided with a pair of resilient integral arms joined at their free ends to mount a detent engageable with said notches for positioning said blade at selected longitudinal positions. .Iadd. 
     
     
       6.  In a cutting blade holding handle having a blade comprising a hollow body forming a cavity and having an end slot through one end thereof, means within said cavity for guiding the blade to advance and retract the blade through said end slot, the improvement comprising a wedging member engageable with one side of the blade, said cavity having an inclined interior wall adjacent said end slot and said wedging member having a bevelled end engageable therewith, and means to slide said wedging member from an inactive position in which the wedging member does not apply lateral pressure to the blade to an active position wherein the wedging member is slid up the inclined interior wall adjacent said end slot and the bevelled end of said wedging member engages and applies a lateral pressure against the blade to hold the blade in position. .Iaddend. .Iadd.7. A device according to claim 6 wherein a cutout is provided in the side wall of said handle and said wedging member has a finger piece extending through said cutout. .Iaddend. .Iadd.8. A device according to claim 7 wherein said handle is provided with a recess and said finger piece is provided with a detent engageable therewith to releasably secure said edging member in one of said positions. .Iaddend.