JAMES MATTHEW UNDERWOOD
Pilots at Lakeside Dr, Kennesaw, GA

4954022, Sep 4, 1990

Jun 16, 1989

7/367030

James L. Underwood - Kennesaw GA
Floyd K. Williams - Marietta GA
Ricky W. Tumlin - Ackworth GA

Underwood Mold Co., Inc. - Woodstock GA

B23B 3500

408 1R

There is disclosed a method for machining multiple holes in a workpiece to a uniform depth and at a predetermined angle to the surface of the workpiece. The method is performed by a numerically controlled machine tool which orients the workpiece in space with respect to a reference coordinate system which establishes an expected position of the surface of the workpiece. The actual position of the surface of the workpiece is determined by sensing contact between the workpiece and the boring tool. Once the actual position of the workpiece surface has been sensed, the tool is advanced a predetermined distance to provide a uniform depth cut. The expected position, the actual position, and the deviation between the two are recorded to assure that the surface of the workpiece is accurately sensed during subsequent machining steps. In order to minimize false premature sensing of the workpiece, the surface of the workpiece is coated with a nonconductive enamel, air is blown across the surface of the workpiece to remove debris, and an insulating liquid coolant/lubricant is used during the drilling of the workpiece.

4203362, May 20, 1980

Nov 2, 1978

5/957138

James L. Underwood - Kennesaw GA
Sol Shapiro - Charlotte NC

Adjusta-Mounts, Inc. - Atlanta GA

B41F 138

101327

A manual self-inking stamping device including a base for contacting material to be stamped, such base having a recess in which a self-inking stamp pad is supported for vertical movement with respect thereto. A depressable handle threadedly engages a shaft extending through the base from the stamp pad, and a movable member is disposed about the shaft for selective meshing engagement with the base at one end of the movable member and for engagement with the handle at the other end to lock the handle against rotational movement about the shaft. A spring disposed intermediately of the handle and the movable member urges the handle and the stamp pad upwardly and urges the movable member into engagement with the base. The handle may be depressed against the biasing force of the spring to bring the stamp pad into contact with the material to be stamped, the movable member acting as a stop to restrict the vertical depression of the handle. The stamping pressure which may be exerted against the material may be varied by adjusting the effective length of the shaft between the handle and the movable member by moving the movable member upwardly out of meshing engagement with the base and rotating the handle about the shaft.