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US Patent: 188,668
Improvement in screws
Patentee:
James Pleukharp (exact or similar names) - Columbus, OH

USPTO Classifications:
411/389

Tool Categories:
hardware : fasteners : screws

Assignees:
None

Manufacturer:
James Pleukharp & Co. - Columbus, OH

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 10, 1877
Granted: Mar. 20, 1877

Patent Pictures:
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Vintage Machinery entry for Pleukharp Barrel Machine Co.
Description:
Of interest because the inventor was subsequently behind machinery maker Pleukharp Barrel Machine Co. He was also the principal behind furniture maker James Pleukharp & Co.

"My invention has for its object to provide a cheap wood-screw for use in securing the legs of tables to the top or frame thereof..."

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