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US Patent: 1,018,236
Implement For Automobile Engines
Patentee:
John J. Cooper (exact or similar names) - Providence, RI

USPTO Classifications:
29/219

Tool Categories:
specialty tools : valve spring tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Herbert L. Kelley
N. M. Gustin
Geo. H. Remington
Calvin H. Brown

Patent Dates:
Applied: Sep. 12, 1911
Granted: Feb. 20, 1912

Patent Pictures:
John J. Cooper patent Febr. 20, 1912
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Description:
Valve spring compressor with screw-adjustable fulcrum point, "shoes" on the lever, and provision for a "brace" between the lever and screw to hold the spring in compressed position.

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