US Patent: 3,345,889 - Slide and grip quick-action cam-lock clamp


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US Patent: 3,345,889

Slide and grip quick-action cam-lock clamp

Patentees:

Fred W. Yunt (exact or similar names) - Torrance, CA

H. Keats Baker (exact or similar names) - Fullerton, CA

USPTO Classifications:

269/167, 269/210, 269/236, 408/98

Tool Categories:

metalworking machines : drilling and boring : drill presses : drill press accessories

work holding

Assignees:

Northrop Corp. - Beverly Hills, CA

Manufacturer:

Welch Drill Bushing Co. - Glendale, CA

Witnesses:

Unknown

Patent Dates:
Applied:	May 18, 1965
Granted:	Oct. 10, 1967

Patent Pictures:

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Description:

This work holding device clamps around a drill press column and is used to hold the work piece down on the table. Early versions had a cast arm, but the design quickly changed to a heavy-gauge stamped steel construction. They are very commonly found but are usually unlabeled. Information on the manufacturer is taken from ads in "Popular Science", e.g., January 1967 page 152. I own an example with a foil label on it with the same manufacturer name. For more information on this device, search on the manufacturers name on owwm.org.