US Patent: 1,655,563 - Thread-cutting die


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US Patent: 1,655,563

Thread-cutting die

Patentee:

Albert J. Prance (exact or similar names) - Detroit, MI

USPTO Classifications:

408/149, 408/172

Tool Categories:

metalworking machines : drilling and boring : tapping heads and chucks

Assignees:

Murchey Machine & Tool Co. - Detroit, MI

Manufacturer:

Murchey Machine & Tool Co. - Detroit, MI

Witnesses:

Unknown

Patent Dates:
Applied:	Jul. 31, 1926
Granted:	Jan. 10, 1928

Patent Pictures:

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Vintage Machinery entry for Murchey Machine & Tool Co.

Description:

Improvements to the inventor's own patent 1,563,108. The improvement allows the thread chasers to be removed and replaced without the use of tools. This invention was subsequently improved in patent 1,777,380.