US Patent: 123,822 - Improvement in machines for forging the heads of bolts


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US Patent: 123,822

Improvement in machines for forging the heads of bolts

Patentee:

Jeremiah Greenwood (exact or similar names) - Fitchburg, MA

USPTO Classifications:

470/147

Tool Categories:

metalworking machines : forging machines : forging apparatus and accessories

metalworking machines : bolt heading machines

manufacturing : manufacturing processes : manufacturing nuts and bolts

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Charles H. Foss

Cyrus Hamblet

Patent Dates:
Granted:	Feb. 20, 1872

Patent Pictures:

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Vintage Machinery entry for Putnam Machine Co.

Description:

This invention was the subject of an illustrated article in the December 1872 Manufacturer & Builder, page 272. "All orders or inquiries should be addressed to J. Greenwood, with Putnam Machine Co., Fitchburg, Mass." So far as we know, Putnam did not manufacture this invention.