US Patent: 1,553,623 - Parallel Valve Spring Lifter


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US Patent: 1,553,623

Parallel Valve Spring Lifter

Patentee:

John H. McLeod (exact or similar names) - Stockton, CA

USPTO Classifications:

29/221, 81/302, 81/336, 81/349

Tool Categories:

specialty tools : valve spring tools

Assignees:

John H. McLeod - Stockton, CA

Fred P. Clark - Stockton, CA

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Aug. 20, 1924
Granted:	Sep. 15, 1925

Patent Pictures:

John H. McLeod patent Sept. 15, 1925

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Description:

The linkage between the handles and jaws keeps the jaw faces parallel. The spring-tensioned catch which maintains the setting to hold the spring in compression is not part of the patent's claims.

This patent is noted in patent no. 1,879,330.