US Patent: 2,470,350 - Water-cooled grinding wheel


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US Patent: 2,470,350

Water-cooled grinding wheel

Patentee:

John A. Harrington (exact or similar names) - Minneapolis, MN

USPTO Classifications:

29/DIG.067, 451/450

Tool Categories:

metalworking machines : grinders : surface grinders

Assignees:

Continental Machines, Inc. - Savage, MN

Manufacturer:

Doall Co. - Des Plaines, IL

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 29, 1948
Granted:	May 17, 1949

Patent Pictures:

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Vintage Machinery entry for Do-All (Continental Machine Specialties Co.)

Description:

This patent number was seen in a 1958 brochure for DoAll grinding machines. It pumps coolant oil through a normal porous grinding wheel. DoALL's "Kleen-Kool" coolant oil, compatible with this patent cooling method, was mixed 250:1 with water.