US Patent: 512,911 - Tool Holder


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US Patent: 512,911

Tool Holder

Patentee:

Henry Shogren (exact or similar names) - Portland, OR

USPTO Classifications:

112/80.03, 279/93, 7/167

Tool Categories:

industrial tools : tool holders

Assignees:

Henry Shogren - Portland, OR

Niels J. Blagen - Portland, OR

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Mar. 15, 1893
Granted:	Jan. 16, 1894

Patent Pictures:

Henry Shogren January 16, 1894

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Description:

A series of small tools is held around the perimeter of a split cylinder by a retaining sleeve. The handle turns to tighten or loosen a clamping bolt with a tapered head that wedges a selected tool against the sleeve by spreading the split cylinder.