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US Patent: 112,626
Improvement in machines for tapping boilers
Patentees:
Joseph L. Hewes - Newark, NJ
Parley I. Perrin - Taunton, MA

USPTO Classifications:
144/130, 144/93.1, 408/127

Tool Categories:
metalworking machines : drilling and boring : tapping machines

Assignees:
Parley I. Perrin - Unknown, Unknown

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Mar. 14, 1871

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Hewes & Phillips
Description:
This patent was perhaps used by Hewes & Phillips of Newark, a maker of machine tools and drill presses, plus water valves, steam engines, and rock drills.

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