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US Patent: 1,468,055
Valve-Grinding Apparatus
Patentee:
Walter I. Tuttle (exact or similar names) - Providence, RI

USPTO Classifications:
157/1.49, 451/117, 81/35, 81/461

Tool Categories:
specialty tools : valve grinding tools

Assignees:
None

Manufacturer:
Frank Mossberg Co. - Attleboro, MA

Witnesses:
none listed

Patent Dates:
Applied: Apr. 29, 1922
Granted: Sep. 18, 1923

Patent Pictures:
Walter I. Tuttle patent Sept. 18, 1923
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Description:
Provisions for alternated head forms to suit different styles of engine valves. The "brace pad" portion of the tool conforms to Tuttle's March 30, 1920 patent no. 1,335,409 and the "sweep handle" to his Dec. 19, 1922 patent no. 1,438,970.

Produced as the No. 610 valve grinder by the Frank Mossberg Co.

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