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US Patent: 3,897
Machine for boring and cutting screws
Machine for drilling and mortising wood or metal
Patentee:
Aretus A. Wilder - Detroit, MI

USPTO Classifications:
408/124, 74/841

Tool Categories:
metalworking machines : drilling and boring
woodworking machines : wood drilling and boring

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
I. N. McParlan
Peter Hay

Patent Dates:
Granted: Jan. 31, 1845

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for A. A. Wilder
Description:
"The nature of my invention consists in an improvement in drilling or mortising metal by means of a useful combination in machinery, whereby the operation is greatly simplified and expedited."

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