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US Patent: 431,809
Attachment for Metal Screw Machines
Patentee:
James Hartness (exact or similar names) - Springfield, Windsor County, VT

USPTO Classifications:
29/46, 29/65, 74/816, 74/817

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories and attachments
metalworking machines : screw machines

Assignees:
Jones & Lamson Machine Co. - Springfield, Windsor County, VT

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 03, 1890
Granted: Jul. 08, 1890

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Jones, Lamson & Co.

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