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US Patent: 512,911
Tool Holder
Patentee:
Henry Shogren - Portland, OR

USPTO Classifications:
112/80.03, 279/93, 7/167

Tool Categories:
tool holders

Assignees:
Henry Shogren - Portland, OR
Niels J. Blagen - Portland, OR

Manufacturer:
Not known to have been produced

Witnesses:
J. A. Bergstrom
C. Sedgwick
C. E. Yetman
H. M. Coke

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

Patent Pictures:
Henry Shogren January 16, 1894
USPTO pdf tiff
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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.

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