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US Patent: 1,041,826
Chain Repair Tool
John N. Macdonald - Hartford, CT

USPTO Classifications:
72/384, 81/418

Tool Categories:
pliers : chain

James M. MacDonald - Wethersfield, CT

J. N. Macdonald & Co. - Wethersfield, CT

May C. McCormick
James M. MacDonald
V. Londen
R. B. Ellins

Patent Dates:
Applied: Jul. 20, 1912
Granted: Oct. 22, 1912

Patent Pictures: [ 1 | 2 ]
John N. McDonald patent Oct. 22, 1912
USPTO pdf tiff
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Pliers type tool designed to manipulate cross links of "WEED" type tire chains. The wedge jaws spread clamped sections; the pincer sections close them.

Illustrations in contemporary ads and listings in period directories suggest this patent was produced as the NECESSITY chain repair tool, distributed by Chas. E. Miller Co. in 1913, and later by Stevens & Co. J.N. Macdonald & Co. of Wethersfield, CT appears as producer of the NECESSITY in the 1918 CHILTON AUTOMOBILE DIRECTORY.

See also Macdonald's patent nos. 965,722 and RE13,957 for a simpler design to accomplish the same task.

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