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US Patent: 1,097,096
Wrench
Patentees:
Henry H. Heuerman (exact or similar names) - Hillsboro, OR
Henry Hunteman (exact or similar names) - Hillsboro, OR

USPTO Classifications:
408/152, 408/197, 451/117, 81/176.15

Tool Categories:
wrenches : wrench adjustment types : screw adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. C. Kuratli
Jennie Hornecker
Einar Larson
Emily F. Camp

Patent Dates:
Applied: Sep. 30, 1913
Granted: May 19, 1914

Patent Pictures:
Henry H. Heuerman and Henry Hunteman patent May 19, 1914
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Description:
The mechanics of this adjustable pin spanner would not have allowed for any rugged use. It was intended primarily to be used as a valve grinding and lapping tool. The screw at the bottom turns the adjusing gear; the screw on the side locks the adjustment.

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