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US Patent: D35,721
Threshing Machine Cylinder Tool
Patentee:
John Pankratz - Kansas City, MO

USPTO Classifications:
D15/28

Tool Categories:
wrenches : cylinder tooth wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
H. C. Rodgers
G. Y. Thorpe
Arthur McArthur

Patent Dates:
Applied: Dec. 24, 1901
Granted: Feb. 11, 1902

Patent Pictures: [ 1 | 2 ]
John Pankratz patent Febr. 11, 1902
USPTO pdf tiff
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Description:
The design incorporates a ratchet socket wrench head with a double offset handle. The end of the handle has slots typically designated as cylinder tooth straighteners. The specifications are written in terms of design rather than function.

A 1906 THRESHERMEN'S REVIEW ad from the Kemper-Paxton Mercantile Co. of Kansas City shows the wrench selling for $3.50.

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