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US Patent: 965,722
Chain Repairing Implement
Patentee:
John N. Macdonald - Hartford, CT

USPTO Classifications:
7/134

Tool Categories:
pliers : chain

Assignees:
None

Manufacturer:
J.N.M. & Co. - Hartford, CT
J. N. Macdonald & Co. - Weathersfield, CT

Witnesses:
William C. Linton
William Bagger
William Barlow
Arthur T. Smith

Patent Dates:
Applied: Jul. 14, 1909
Granted: Jul. 26, 1910

Reissue Information:
Reissued as RE13,957 (Aug. 03, 1915)

Patent Pictures: [ 1 | 2 ]
John N. MacDonald patent July 26, 1910
USPTO pdf tiff
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J. N. Macdonald NECESSITY chain pliers ca. 1912 (FLICKR)
Description:
The jaw features are designed to spread and close links on tire chain cross bars.

A 1912 ad for the NECESSITY Chain Repair Tool shows a version close in appearance to Macdonald's subsequent patent (no. 1,041,826).

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