Patent ID: 7093368

Claim:
A spring loaded engraving tool comprising: (a) a main body of said spring loaded engraving tool configured to be held by a tool holder of a machine tool for driving said engraving tool; (b) a collet holder, coupled to said main body, for receiving a collet for gripping an engraving tool bit, said collet holder being movable along the length of said main body of said spring loaded engraving tool and biased in a forward direction extending away from the main body of said spring loaded engraving tool; (c) a collet nut, coupled to said collet holder, for causing said collet to grip said engraving tool bit; (d) a tool bit depth limiting nosepiece, coupled to said collet nut, having a nosepiece passageway for permitting said tool bit to pass through said passageway and protrude from said nosepiece by a given protrusion distance; and (e) adjustment means for adjusting the given protrusion distance that the tool bit is able to protrude from said nosepiece.