Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Work-gripping clamp
Patent
1977-12-20
1980-03-25
Weidenfeld, Gil
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Work-gripping clamp
408241B, B23B 4902
Patent
active
041948610
ABSTRACT:
A compact portable dowel hole spacing and drilling device has a rigid U-shaped base for receiving a workpiece to be drilled. Inner faces of the bright and a first leg of the base are flat and perpendicular to each other for facially receiving the workpiece which is clamped therein by a thumb-screw carried by a second leg opposite the first leg. A pair of standard drill guides are removably mounted in associated apertures in the bight of the base so that the longitudinal axes of the guides are parallel to each other and the face of the first leg. Opposite ends of the base are open so that opposite portions of the workpiece may extend through these open ends, and flat faces of the ends are parallel to each other and perpendicular to the face of the first leg, and are also parallel to and equally spaced from the adjacent one of the axes of the drill guides, so that corresponding inner edges of the end faces along the first leg and/or the bight serve to position the device for drilling of dowel holes in workpieces which are to be joined in abutting relationship with each other and have been previously provided with aligned marks parallel to the desired dowel holes. Thus, in drilling parallel pairs of hole in the workpieces, one of the positioning edges is aligned with one of the marks, the device clamped to the workpiece and the holes drilled, and then the opposite positioning edge is aligned with the mark on the other workpiece, the device clamped in place and the holes drilled.
REFERENCES:
patent: 10092 (1853-10-01), Dean
patent: 1161479 (1915-11-01), Kelley
patent: 1269811 (1918-06-01), Heritage
patent: 3062076 (1962-11-01), Craig
patent: 3708237 (1973-01-01), Kruse
patent: 4093394 (1978-06-01), Adams
Keller Research & Development, Inc.
Oujevolk George B.
Weidenfeld Gil
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