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US Patent: 209,677
Thomas G. Hall - New York, NY

USPTO Classifications:

Tool Categories:


Inerchangeable Tool Co. - Brooklyn, NY

C. Sedgwick
Francis McArdle
Geo. D. Walker

Patent Dates:
Applied: Aug. 30, 1878
Granted: Nov. 05, 1878

Patent Pictures: [ 1 | 2 | 3 ]
Thomas G. Hall patent November 5, 1878
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Compound leverage on both jaws; the spring between the jaws tends to open them. The pin between the jaws ahead of the fulcrum is a motion stop to prevent the cutting edges damaging each other. The jaws are held between plates attached by screws, so the tool can be taken apart for repair. It is called an improvement on Hall's May 14, 1867 patent (no. 64,664) which has a single compound leverage cutter.

Corresponding British patent GB-187803772 was registered in fall 1878. A modified form was registered as British patent GB-188105219 on Nov. 29,1881.

Known example marked "Hall's Pat. Nov. 5, 78" is 7 inches long.

An 1883 hardware catalog lists the Cutting Nippers in 4", 5" and 7". Reissued Feb. 7, 1882 (RE-10,028 includes dates for German and French patents).

Improved by patent no. 294,034 which adds coordinating "spur and socket" to the handles and a different form of spring to open the jaws. Aspects of patent 294,034 resemble Moses C. Johnson patent no. 232,975, which added a "spur and notch" on the respective handles to keep them and the nipper jaws coordinated and protective "lips" on the jaws to protect the spring from damage by metal snippets. That patent subsequently was the subject of a series of lawsuits which ended with an 1889 U.S. Supreme Court decision which found the Johnson patent invalid. Interchangeable Tool Company's manufacturing plant was relocated to Utica, NY in 1893 and after mortgage foreclosure, became Utica Drop Forge & Tool Co. in 1895 / 1896.

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