US Patent: 432,652 - Welding or other dynamo


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US Patent: 432,652

Welding or other dynamo

Patentee:

Elihu Thomson (exact or similar names) - Lynn, MA

USPTO Classifications:

310/127, 322/71

Tool Categories:

manufacturing : manufacturing processes : welding

trade specific : welder

specialty machines : welding apparatus

metalworking machines : welding machines

Assignees:

None

Manufacturer:

Thomson-Houston Electric Co. - Lynn, MA

Witnesses:

E. W. Rice, Jr.

J. W. Gibboney

Patent Dates:
Applied:	Jan. 22, 1889
Granted:	Jul. 22, 1890

Patent Pictures:

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

Description:

"My invention relates to the construction of dynamo-machines for delivering currents of large volume and low electro-motive force such as are suitable for electric welding and other metal-working operations..." These other operations are not spelled out but include induction heaters.