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US Patent: 942,222
Valve Grinder
Patentee:
Irvin C. Smith - Los Angeles, CA

USPTO Classifications:
451/117, 74/54, 74/70, 74/74

Tool Categories:
specialty tools : valve grinding tools

Assignees:
None

Manufacturer:
R & S Specialty Mfg. Co. - Los Angeles, CA

Witnesses:
Lute S. Alter
Elwood H. Barkelew
Jas. H. Ballagh
James T. Barkelew

Patent Dates:
Applied: Dec. 21, 1908
Granted: Dec. 07, 1909

Patent Pictures: [ 1 | 2 ]
Irvin G. Smith patent Dec. 7, 1909
USPTO pdf tiff
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Description:
"Arm" with rollers that extend from the central shaft are given oscillating movement by a crank-driven cam.

Produced as Smith's Little Wonder Valve Grinder.

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