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US Patent: 2,746,158
Taper micrometer
Patentee:
George L. Gershman (exact or similar names) - Worcester, MA

USPTO Classifications:
33/532, 33/828

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers
layout tools : taper gauges

Assignees:
T. M. Electronics, Inc. - Boylston, MA

Manufacturer:
Taper Micrometer Corp. - Worcester, MA

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 24, 1954
Granted: May 22, 1956

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
Description:
Examples of this sine-bar-and-micrometer taper gauge are uncommon but do occasionally turn up. It was made in at least four sizes. The examples we have seen are in a box labeled, "Taper Micrometer Corporation / Division of T. M. Electronics, Inc. / 100 Grove Street / Worcester, Massachusetts". See also patents 3,230,630 and 3,327,399.

The inventor died 2008-07-20 at age 100. The Worcester Telegram's obituary of him, from August 2, reveals him to have led an interesting life. He was born in Ukraine in 1908. In the late 1940s he used his mattress manufacturing business to smuggle small arms to Israel. He was also an inventor, pilot, nudist, dowser, bee-keeper, philatelist, hypnotist, and watch repairman.

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