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US Patent: 107,599
Improvement in Combined Furnace or Oven and Tempering Dies
Patentee:
Henry Disston - Philadelphia, PA

USPTO Classifications:
432/124

Tool Categories:
tool making : making sawblades

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
H. Howson
A. H. Shoemaker

Patent Dates:
Granted: Sep. 20, 1870

Patent Pictures: [ 1 | 2 ]
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Description:
Designed to simultaneously 2and tempering thin articles of steel by using the dies to maintain the material at a constant uniform temperature. Henry Disston references Silvester's U.S. Patent 9237, August 31, 1852 and granted in England July 17, 1850.

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