US Patent: 1,978,427 - Combined Circular Chaser and Turning Tool


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US Patent: 1,978,427

Combined Circular Chaser and Turning Tool

Patentee:

William J. Hogg (exact or similar names) - Cleveland, Cuyahoga County, OH

USPTO Classifications:

408/188, 470/185

Tool Categories:

metalworking tools : tap and die holders

metalworking machines : screw machines : screw machine tool holders and tools

Assignees:

National Acme Mfg. Co. - Cleveland, Cuyahoga County, OH

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	May 04, 1932
Granted:	Oct. 30, 1934

Patent Pictures:

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"Vintage Machinery" entry for National Acme Co.

Description:

Claim:

The present invention is an improvement upon that shown and described in my contemporaneously pending application, Serial Number 459,700, filed June 7th, 1930, and assigned to the National Acme Company, the owner of the present improvement, and reference is made to that case for a detailed description of the construction of the die itself and the manner of supporting the chasers therein, the present improved chaser having, as set forth in that case, straight grooves instead of spiral formed grooves, the chasers, however, being so set that they have all the effects of the spiral grooves without any of their disadvantages.