CULTIVATORS-DISK. 



S. D, NORTON 

 Pulverizing Disk Harrow 



Patented April 8. ,879 







No. 2I6,87S. Patented June 24: 1879. 



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H. F,.& 8. F, SHAW, 



Wheoi-Harrow, 



No. 220.255 Patented Oct 7. 1879. 





