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US Patent: 1,489,458
Wrench
Patentee:
William Petersen (exact or similar names) - DeWitt, NE

USPTO Classifications:
219/90, 81/111, 81/380, 81/399, 81/99

Tool Categories:
wrenches : pliers type wrenches : locking pliers

Assignees:
William Petersen - DeWitt, NE
Jules A. Sire - DeWitt, NE

Manufacturer:
Petersen Mfg. Co. - DeWitt, NE
S.P.W. Co. - DeWitt, NE

Witnesses:
none listed

Patent Dates:
Applied: Jan. 25, 1923
Granted: Apr. 08, 1924

Patent Pictures: [ 1 | 2 | 3 | 4 | 5 ]
William Petersen Pat. April 28, 1924
USPTO (New site tip)
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Report data errors or omissions to steward Stan Schulz
Petersen Mfg. Co. (Nebraska State Historical Society) (2003)
Description:
"2nd" VISE-GRIP patent and the basis from which subsequent evolution of the tool proceeded. This patent added the secondary lever handle and "over-center toggle lock" to replace the 1921 screw adjustment for the swinging jaw in patent no. 1,392,443.

Some early examples are stamped "S.P.W. Co. DeWitt Neb." reflecting an early "partnership" with Jules A. Sire, the DeWitt banker. A 1923 VISE-GRIP trademark registration was granted to "Sire & Petersen Wrench Co."

Evolution of the tool during the 1930s led to the forms in subsequent patent nos. 2,201,918 and 2,280,005. The last of the tools marked with the 1924 patent number are otherwise identical with the earliest of the tools marked with the 1942 patent number. They originally were also marked with a decal incorporating a 1923 trademark image and "PETERSEN MFG. Co. DE WITT, NEBR." -- see image (5) above.

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