Patent ID: 7950157

Claim:
A router plane, comprising: a. a plane body having a sole, b. a blade post attached to the body generally perpendicular to the sole, c. a blade having a shank, d. a collar for securing the blade to the post, e. a threaded member for adjusting the projection of the blade relative to the sole by rotating the member, and f. a spring-loaded mechanism for maintaining engagement between the collar and the blade shank while permitting adjustment of blade projection and for securing the blade within the plane after adjustment of blade projection, the mechanism comprising: (i) a thumb screw penetrated by a longitudinal bore, (ii) a coiled compression spring, and (iii) a pin having a flat head attached to a shank, wherein: (i) the shank of the pin is surrounded by the coiled spring, and (ii) the shank of the pin is slidably positioned within the bore in the thumb screw, and (iii) the shank of the pin is urged by the coiled spring to project from the thumb screw forcing the flat head of the pin against the post when the thumb screw is not fully tightened, thereby maintaining engagement between the collar and the blade shank to permit adjustment of blade projection, and (iv) the head of the pin is more securely forced against the post by the thumb screw when the thumb screw is fully tightened, thereby securing the blade to the post for router plane use.