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US Patent: 628,110
Tapping-machine
Patentee:
Oscar Mueller - Decatur, IL

USPTO Classifications:
408/92

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Barna McDaniel
Mabel Carson

Patent Dates:
Applied: Apr. 01, 1899
Granted: Jul. 04, 1899

Patent Pictures:
USPTO pdf tiff
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Description:
"This invention is intended to provide a cheap and superior substitute for the old-style 'crow-hook' dry-pip and gas tapping machine."

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