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US Patent: 672,654
Pliers
Patentees:
Ellie N. Sperry (exact or similar names) - Bridgeport, CT
Willis F. Hobbs (exact or similar names) - Bridgeport, CT
Nelson B. Keyes (exact or similar names) - Bridgeport, CT

USPTO Classifications:
81/416

Tool Categories:
pliers

Assignees:
Bridgeport Manufacturing Co. - Bridgeport, CT

Manufacturer:
Not known to have been produced

Witnesses:
H. A. Lamb
S. H. Atherton
R. R. Davison
A. M. Wooster
Patent Dates:
Applied: Jul. 02, 1900
Granted: Apr. 23, 1901

Patent Pictures:
Ellie N. Sperry, Willis F. Hobbs, and Nelson B. Keyes patent April 23, 1901
USPTO (New site tip)
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Description:
The patented feature is the formation of pliers or similar hand tools from folded sheet metal, with sufficient "spring" in the fold to keep the pivot pin "tight."

Two of the patentees are also listed as inventors in patent number 672,673 for another form of pliers formed from sheet metal.

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