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US Patent: 427,220
Pliers
Patentee:
William A. Bernard - New York, NY

USPTO Classifications:
81/353

Tool Categories:
pliers

Assignees:
Bernard, Walker & Rice - New York, NY

Manufacturer:
Wm. Schollhorn Co. - New Haven, CT

Witnesses:
Harold Serrell
George T. Pinckney

Patent Dates:
Applied: May 13, 1889
Granted: May 06, 1890

Patent Pictures: [ 1 | 2 ]
William A. Bernard Pat. May 6, 1890
USPTO pdf tiff
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Description:
The patent is for parallel jaw pliers with handles made from sheet metal stampings. With a separate pivot pin on each side of the joint, the pliers can grip in the middle of rods or wires which can extend through the center line of the tool. (See also contemporary Canadian patent CA-35,834 for more on the basic pliers form, and British patent GB-189007002 for multiple uses based on this structure.)

The patent indicates Bernard planned to manufacture these pliers; known examples were manufactured by Wm. Schollhorn Co. of New Haven (Bernard owned a controlling interest in the company at one point), and Bernard's later patents were assigned to Schollhorn. Schollhorn's catalog featured a significant assortment of specialty pliers based on Bernard's parallel jaw patent.

Bernard patented revisions and additions to this basic design over a couple of decades -- see patent numbers 427,497, 479,113, 488,785, 526,479, 526,480, 753,224, 788,575, 848,877, 999,738, 999,739, 1,077,789, 1,206,198 and reissue patents RE11,868, and RE13,657.

The patent is noted in 653,364.

The patent was the basis for Wm. Schollhorn Company's suit against the Bridgeport Manufacturing Company for patent infringement. Bridgeport was producing parallel jaw pliers based on Adolf Schatz's patents (no. 557,615 and 571,021) which ultimately were found to infringe on patent no. 427,220.

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