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US Patent: 3,297,314
Variable V Block and Clamping Device or Assembly
Patentee:
John S. Brown (exact or similar names) - Framingham, Middlesex County, MA

USPTO Classifications:
269/243, 408/104

Tool Categories:
metalworking tools : jigs and fixtures : V blocks

Assignees:
United States of America as represented by the Secretary of the Army - Washington, DC

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 20, 1964
Granted: Jan. 10, 1967

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
Description:
Claim:

A variable V-block and clamping device for supporting and holding a workpiece having different diameters and a centerline common to all of the diameters, said device comprising, in combination, a base having an upstanding, integral V-shaped portion at one end thereof, there being a cutout portion at its other end, said base being further provided with a vertical smooth bore therethrough and located medially thereof, an elongated counterbore at the upper portion of said vertical bore and a transversely disposed, elongated recess intersecting said vertical bore and normal thereto; a clamp received in said vertical and counter bores, said clamp including an eye of predetermined diameter; an elongated boss adjacent said eye and adapted to be received in said elongated counterbore; and an externally threaded extension depending from said boss and adapted to be received in said vertical bore, said extension having a length to intersect said recess; a thumb nut threaded on said extension and rotatable in said transverse recess; and a V-shaped plate detachably mounted in said cutout portion in said base, said thumb nut raising or lowering said clamp when rotated to secure a workpiece when threaded through said eye.

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