US Patent: 2,066,372 - Method of Making Dies or Punches


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US Patent: 2,066,372

Method of Making Dies or Punches

Patentee:

Joseph J. Tomalis (exact or similar names) - Providence, Providence County, RI

USPTO Classifications:

72/324, 72/356, 72/375, 76/107.1, 76/119, 81/460

Tool Categories:

metalworking tools : metal punches

metalworking machines : metalworking presses : stamping presses : stamping press dies

Assignees:

American Screw Co. - Providence, Providence County, RI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Oct. 03, 1935
Granted:	Jan. 05, 1937

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for American Screw Co.

Description:

Claim:

An important feature of the invention resides in the construction of a punch comprising a projection or nub extending integrally from a shoulder on the end of a metal bar, wherein the metal of the punch is compressed and upset as a result of cold pressing into a matrix and wherein simultaneously a fillet is formed at the junction of all of the surfaces of the projection and the said shoulder.