US Patent: 1,716,331 - Method of making collets


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US Patent: 1,716,331

Method of making collets

Patentee:

Byron F. Stowell (exact or similar names) - Springfield, MA

USPTO Classifications:

29/404, 72/324

Tool Categories:

work holding : collets and collet holders

Assignees:

Van Norman Machine Tool Co. - Springfield, MA

Manufacturer:

Van Norman Machine Tool Co. - Springfield, MA

Witnesses:

Unknown

Patent Dates:
Applied:	Feb. 09, 1928
Granted:	Jun. 04, 1929

Patent Pictures:

USPTO (New site tip)
Google Patents
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Vintage Machinery entry for Van Norman Machine Tool Co.

Description:

This invention relates to manufacturing "double ended split collets", and which are capable of fitting a larger size range than traditional collets, and which are, furthermore, hardened and tempered.