Chucks or sockets – Radially reciprocating jaws – Transverse-screw actuated
Patent
1983-09-29
1985-08-13
Briggs, William R.
Chucks or sockets
Radially reciprocating jaws
Transverse-screw actuated
279 67, B23B 3136
Patent
active
045345740
ABSTRACT:
The disclosed chuck has a cylindrical body and a mounting hub secured thereto for concentrically connecting the body to the powered spindle of a lightweight woodturning lathe. The body has a faceplate opposite the mounting hub, and radial grooves are formed in the body from the faceplate. Adjustment screws fit in the grooves, being rotatably held therein by spaced bearings, and chuck jaws are supported on the rotatable adjustment screws and project forwardly from the faceplate. Rotation of each adjustment screw thus moves the chuck jaw thereon radially of the faceplate and within the grooves to provide keyed gripping of a workpiece to be shaped by the lathe. The workpiece can be of virtually any cross section as each jaw can be independently adjusted. The chuck body is approximately 10 inches in diameter and 1 inch in thickness and is formed of wood to be light in weight, only approximately 3 pounds.
REFERENCES:
patent: 785584 (1905-03-01), Mowat
patent: 803984 (1905-11-01), Briggs
patent: 960705 (1910-06-01), Reynolds
patent: 1025784 (1912-05-01), Clark
patent: 1424597 (1922-08-01), Sloan
patent: 2177326 (1939-10-01), Morris
patent: 4192521 (1980-03-01), Smith
Groh Edward F.
Hesh Frank
Briggs William R.
Lind Charles F.
Webb Glenn L.
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