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US Patent: 1,159,621
Pliers and Similar Tool
William S. Thomson - Plantsville, CT

USPTO Classifications:
30/226, 30/266, 81/416

Tool Categories:

H. D. Smith and Company - Plantsville, CT

H. D. Smith and Company - Plantsville, CT

R. W. Edwards
J. A. Hull
Geo. R Bond
E. H. Galpin

Patent Dates:
Applied: Feb. 04, 1915
Granted: Nov. 09, 1915

Patent Pictures: [ 1 | 2 ]
William S. Thomson patent November 9, 1915
USPTO pdf tiff
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The patent is for the "encased joint" which would allow for a cutting notch to extend almost to the center of the pivot, unless a center pivot pin was incorporated into the joint.

Pliers incorporating this principle were announced in hardware trade journals in mid-1915.

The bearing surfaces of the end-cutting pliers in pat. no. 1,192,021 conform to the concepts in this patent.

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