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US Patent: 463,921
Pliers
Patentee:
Samuel Rufer - 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
USPTO pdf tiff
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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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