Twelve Disk Harrow Small 320×160 Medium 640×321 Large 1024×513 Download TIFF Original 2400×1203 | (374.3 KB) Description This disk harrow features twelve disks split between two drums. This agricultural tool is a farm implement that is used to cultivate the soil where crops are to be planted. Conveniently it also chops up unwanted weeds or crop remainders. Keywords Disk harrow, farm implement, iron disk, soil cultivate, steel disk Galleries Agricultural Machines Source: Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)