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US Patent: 2,867,556
Method of Flame Hardening
Patentee:
George E. Tegen (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI

USPTO Classifications:
148/581, 148/612, 148/642, 148/645, 148/646

Tool Categories:
specialty machines : heat treating machines

Assignees:
Giddings & Lewis Machine Tool Co. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 18, 1953
Granted: Jan. 06, 1959

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
Description:
The present application is a continuation-in-part of my earlier application, filed in the United States Patent Office on 30 September, 1950, now abandoned.

Claim:

This invention relates to the flame hardening of relatively long bars of ferrous metal such as cast iron, such bars having lengths many times greater than their cross-sectional dimensions. The greater aim of the invention is to provide a novel method of flame hardening such bars which is simple and inexpensive and which virtually avoids distortion in the final hardened bar.

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