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US Patent: 1,954,034
Equalizing boring guide
Patentee:
Ewald A. Arp (exact or similar names) - Minneapolis, MN

USPTO Classifications:
279/2.19, 408/83

Tool Categories:
specialty tools : automotive tools
metalworking tools : boring bars
trade specific : vehicle repairer : vehicle mechanic : cylinder maintenance

Assignees:
Van Norman Machine Tool Co. - Springfield, MA

Manufacturer:
Van Norman Machine Tool Co. - Springfield, MA

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 15, 1930
Granted: Apr. 10, 1934

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Van Norman Machine Tool Co.
Description:
Patent number seen on a Van Norman "Per-Fect-O" 77/S4 boring bar, along with patents 1,868,440, 1,881,993, and 1,906,241.

This invention is an improvement on patent 1,868,440

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