Patent ID: 6516842
Filing Date: 2003-02-11
Classification: B27F,Y10T

Abstract:
A hollow chisel mortiser with a rotor for adjusting a working angle of the mortiser, comprising:a base with a bottom adapted to be secured to another surface, a top, a front and a rear end including a recess longitudinally defined in the rear end of the base member and two threaded holes diametrically defined in the rear end of the base member relative to the recess in the base member; a rotor rotatably abutting and selectively secured on the rear end of the base, the rotor including: a protrusion axially extending from the rotor and rotatably received in the recess in the base member; two curved slots defined in and extending through the rotor, the two curved slots respectively aligning with the two threaded holes in the base member; a through hole co-axially defined in the protrusion and extending through the rotor; a bolt extending through the through hole and screwed into the base; and two screws extending through the two curved slot in the rotor and screwed into the two threaded holes in the base to attach the rotor to the base; a worktable slidably mounted on the top of the base; a tool support perpendicularly mounted on the rotor; and a drill movably mounted on the support.