US Patent: 1,831,447 - Metal cutting instrument


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US Patent: 1,831,447

Metal cutting instrument

Patentee:

Robert Heinrich (exact or similar names) - Racine, WI

USPTO Classifications:

30/227, 83/145, 83/197, 83/200, 83/450, 83/597

Tool Categories:

metalworking machines : metal shearing machines

Assignees:

None

Manufacturer:

National Machine Tool Co. (Racine) - Racine, WI

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 11, 1929
Granted:	Nov. 10, 1931

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Heinrich Co.

Description:

"This invention relates to improvements in metal cutting instruments and more particularly to a rod cutting attachment for metal shears such as illustrated in (1,647,622)."