Patent ID: 7243692

Claim:
A chisel quickly adjusting and positioning device for a chiseling machine, said device comprising: a machine body provided with a drill chuck in an interior thereof, a sleeve hole formed in a bottom of said machine body, a sleeve fitted in said sleeve hole and provided with an oval hole formed in an exterior wall of the sleeve and an annular limiting member formed on a lower portion of the sleeve, a handle screwed with said oval hole and having a front end extending in said sleeve hole; a chisel unit fitting in said sleeve and composed of a drill and a chisel, said chisel provided with an intermediate annular recessed surface for receiving and stopping said annular limiting member of said sleeve and an tubular member formed in an upper portion, said upper tubular member fitting in said sleeve, said drill fitted lengthwise in said chisel and having its upper end clamped tightly in said drill chuck of said machine body; and, a predetermined number of separating members pivotally connected to said bottom of said machine body, said separating members respectively having a predetermined thickness, said separating members are selectively inserted between said annular limiting member of said sleeve and said bottom surface of said machine body adjustably forming a gap between a tip of said drill and said chisel blade.