US Patent: 2,709,600 - Lock and Ejector Collets


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US Patent: 2,709,600

Lock and Ejector Collets

Patentee:

John W. Lehde (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:

279/143, 279/30, 279/52, 279/59, 279/83, 408/239R

Tool Categories:

metalworking tools : tool holding collets

Assignees:

Scully-Jones & Co. - Chicago, Cook County, IL

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	May 28, 1954
Granted:	May 31, 1955

Patent Pictures:

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

Description:

Claim:

Means for mounting drills or other tools in the spindles of machine tools, consisting of an adapter, means for adjustably mounting the adapter in the end of the spindle, said adapter having a tapered hole in the outer end thereof, a collet having a tapered portion adapted to fit in the tapered hole with a driving fit to actuate a tool, threads on the outer end of the collet, a nut having threads engaging with the threads on the collet, an annular series of balls between the nut and the adapter which serve as a ball bearing for the nut and also act as an annular key for holding the nut against longitudinal movement with respect to the adapter.