Patent Model - Improvement in Ditching-Plows

Maker and role
Louis Koehler, Patentee
Production date
Sep 17 1878
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Object detail

Wood, steel
12 x 12 x 6" (30.5 x 30.5 x 15.2cm)
Koehler's patent "relates to that class of ditching-machines in which a revolving cutter-wheel having a grooved periphery is employed to make side indentations, and a plow, following between the cutter-edges of the wheel and immediately in the rear of the wheel, removes the earth, thus completely forming the ditch." (Patent number 208,103)
Object number
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