US Patent: 65,946 - Improved Apparatus for Tempering Steel Plates


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US Patent: 65,946

Improved Apparatus for Tempering Steel Plates

Patentee:

Christopher Richardson (exact or similar names) - Newark, NJ

USPTO Classifications:

266/249, 432/194, 432/231

Tool Categories:

woodworking machines : specialty woodworking machines : tool making machines

woodworking tools : handsaws

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Wm. C. Richardson

John Edmondson

Patent Dates:
Granted:	Jun. 18, 1867

Patent Pictures:

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Description:

Two plates are placed in a heated chamber and are forced together with a screw and the saw or other steel plate for tempering placed between them. Richardson does not claim the use of pressure in tempering since that is already been done using hydraulic and lever pressure. Similar to his later patent, 157296.