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US Patent: 1,450,788
Valve Grinding Tool
Patentee:
Warren S. Bellows (exact or similar names) - Worcester, Worcester County, MA

USPTO Classifications:
451/117

Tool Categories:
specialty tools : valve grinding tools

Assignees:
Walden-Worcester Inc. - Worcester, Worcester County, MA

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Mar. 18, 1918
Granted: Apr. 03, 1923

Patent Pictures:
Warren S. Bellows patent April 3, 1923
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Description:
The working end has a rotating tip and sliding lock. The rotating tip has straight and divided ends corresponding to common provisions on engine valves.

Walden-Worcester brace type valve grinders of the period had other provisions for adjusting to different types of engine valves.

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