Work holders – Holder mounted for movement – Means for position lock
Patent
1987-02-05
1988-03-15
Watson, Robert C.
Work holders
Holder mounted for movement
Means for position lock
B23Q 104
Patent
active
047308184
ABSTRACT:
A holding device for holding a workpiece in an adjustable position while one or more operations are carried out thereon comprises a base having an annular flange which is received in arcuate recesses provided for such purpose in a pair of mutually spaced and mutually opposed support arms. At their opposite ends, such support arms are provided with opposed concave recesses receiving a generally spherical member carrying a workpiece attachment plate on which a workpiece can be supported. A shaft extends through the support arms intermediate their ends and spring means associated with that shaft bias the support arms toward each other to retain the annular flange within the arcuate recesses and the generally spherical member within the concave recesses. A toggle action clamping member at one end of the shaft can be moved between a released position in which the spherical member can rotate within the concave recesses and the support arms are free for conjoint rotation about the annular flange, and a clamped position in which all such movement of the component parts is prevented.
REFERENCES:
patent: 1280013 (1918-09-01), Goddard
patent: 2700523 (1955-01-01), Pollard
patent: 3815892 (1974-06-01), Tulk
Rolston George A.
Watson Robert C.
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