324 THE WHEAT CTTLTURIST. 



This plough has been before the public sufficiently long 

 to establish the point that steel ploughs, when the parts 

 are hardened properly, are far superior to iron ploughs, 

 as they will draw much easier and last longer. 



Nishwetz's Disk Harrow.* 



The accompanying illustration represents a new style 

 of pulverizer, invented by F. Nishwitz, 142 First street, 

 Williamsburg, Long Island, New York. The principle 

 of construction is quite new ; but, by those who have 

 used it, the operation is said to be eminently effective. 

 The wooden frame consists of two pieces of hard, tough 

 timber, about two inches in thickness, by seven or eight 

 inches wide, held in position by the cross-bar, which is 

 firmly bolted to the side pieces, as represented by the 

 illustration. 



The pulverizers consist of several sharp-edged circu- 

 lar disks, about one foot in diameter, being concave on 

 one side and convex on the other. When the wheels or 

 disks are cast, a round steel pin, about three-fourths of 

 an inch in diameter, is inserted in the mould, thus fur- 

 nishing a steel journal for each disk. A bolt with a nut 

 at the upper end is passed through a socket-standard, 

 which holds the disks in their position. 



* Was awarded a special gold medal, at trial of plows, harrows, 

 cultivators, etc., at Utica, 1867, by N. Y. State Agricultural Soc. 



