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US Patent: 944,149
Valve Spring Lifter
Patentee:
Peter Peterson (exact or similar names) - South Bend, IN

USPTO Classifications:
29/219

Tool Categories:
specialty tools : valve spring tools

Assignees:
None

Manufacturer:
Peter Peterson - South Bend, IN
Buffum Tool Co. - Louisiana, MO

Witnesses:
S. E. Dodge
E. Larson
P. C. Fergus
R. Loustrom

Patent Dates:
Applied: Jun. 08, 1909
Granted: Dec. 21, 1909

Patent Pictures: [ 1 | 2 ]
Peter Peterson patent Dec. 21. 1909
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Description:
One distinctive feature of this design is the piece that wedges inside the "valve chest" as well as holding the valve down.

The piece engaging the spring pivots in a forked lever. Peterson's Valve Spring Lifter was announced to the trade in mid-1909.

In 1912, the Buffum Tool Co. of Louisiana, MO was listing the Peterson Patent valve lifter.

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