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US Patent: 463,921
Pliers
Patentee:
Samuel Rufer (exact or similar names) - New Philadelphia, OH

USPTO Classifications:
81/10

Tool Categories:
pliers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. S. Frye
F. L. Ourand
Oliver H. Hoover
John W. Kinsey
Patent Dates:
Applied: Sep. 11, 1891
Granted: Nov. 24, 1891

Patent Pictures:
Samuel Rufer patent November 24, 1891
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Description:
The purpose of this tongs is to mutilate threads of bolts after the nuts have been tightened, so as to keep the nuts from working loose.

Corresponding Canadian patent no. CA-41,497 was issued January 11, 1893.

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