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US Patent: 444,635
Bolt and Rivet Cutter
John Helwig - Dubuque, IA

USPTO Classifications:
30/192, 81/348, 81/349, 81/393

Tool Categories:
industrial tools : bolt cutters


Helwig Mfg. Co. - St. Paul, MN

William Miller
Edward Wolff
Wm. C. Hauff
E. F. Kastenhuber

Patent Dates:
Applied: Jul. 10, 1890
Granted: Jan. 13, 1891

Patent Pictures:
John Helwig patent Jan. 13, 1891
USPTO pdf tiff
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Features of the patented device address heavy-duty cutting such as locomotive boiler rivets and stay-bolts. The basic form reflects John Hellwig's March 6, 1877 patent no. 188,133.

Both patent dates are shown in 1895 advertisements for the Helwig Mfg. Co. (St. Paul, Minn.) bolt and rivet cutter. The tool shown there matches the earlier patent.

Corresponding British patent GB-198100892 was registered Jan. 17, 1891.

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