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US Patent: 1,906,241
Method and apparatus for predetermining the size of rebored cylinders
Patentee:
Ewald A. Arp (exact or similar names) - Minneapolis, MN

USPTO Classifications:
33/628, 407/120, 407/97, 408/1R, 408/239R, 408/709

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: May 02, 1933

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 1,954,034.

This invention relates to the art of boring cylinders and has particular reference to the reboring of worn cylinders of internal combustion motors. One object of the invention is to provide an improved method of predetermining the size of the rebored cylinder without the necessity of making measurements directly upon the cylinder while it is being machined. Another object is to provide an improved mechanism for facilitating the adjustment of the cutting mechanism while the cutter is removed from the boring device...."

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