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US Patent: 2,645,142
Spark Plug Adjusting Pliers
Patentee:
Otto Schwenzfeler - McCook, Willow County, NE

USPTO Classifications:
7/100, 7/125, 72/31.12, 72/398, 72/409.01, D8/52

Tool Categories:
pliers : spark plug adjusting

Assignees:
James T. Clark - Fort Morgan, CO

Manufacturer:
Snap-On Tools Corp. - Kenosha, WI
Indestro Mfg. Corp. - Chicago, Cook County, IL

Witnesses:
none listed

Patent Dates:
Applied: Jan. 22, 1951
Granted: Jul. 14, 1953

Patent Pictures: [ 1 | 2 | 3 ]
Otto Schwenzfeier patent July 14, 1953
USPTO pdf tiff
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Description:
A rotatable spark plug gap gauge and anvil are fixed to one jaw; the other jaw has an adjustable width gap to fit the spark plug body.

The patent number appears on examples of the Snap-On CF series of spark plug gappers.

The tool is described (with no maker name noted) in Mar. 1954 POPULAR MECHANICS.

Patent nos. 64,904, 764,212, 1,085,461, 1,249,394, 1,263,412, 1,384,209, 1,421,465, 1,439,664, 1,629,000 and 2,492,380 are cited as references.

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