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US Patent: 255,637
Carriage Wrench
Prescott B. Kinsman - Great Falls, NH
Josiah Merrill - Great Falls, NH

USPTO Classifications:
81/170, 81/2

Tool Categories:
wrenches : axle nut wrenches : axle nut wrench combination tools


Eureka Wrench Co. - Great Falls, NH

C. Neveux
C. Sedgwick
A. A. Perkins
Angenette Stickney

Patent Dates:
Applied: Jan. 19, 1882
Granted: Mar. 28, 1882

Patent Pictures:
P. B. Kinsman and J. Merrill patent March 28, 1882
USPTO pdf tiff
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The frame has the fixed jaw, a slide way for the movable jaw, and a round socket for the oiler. A bolt in the end of the frame adjusts the movable jaw. Most known extant examples are missing the oil can.

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