2g^ MEED HARROW. 



conviction whatever can facilitate its operations may not 

 be unworthy of attention, and will, I hope, excuse the 

 liberty I have taken. 



I have the honour to be, Sir, 



Your obedient humble Servant, 



J. C. CURWEN. 

 London, May 5th, 1806. 



Explanation of the Engraving of Mr. Curweti's Drill Horse. 



Hoe, or Weed Harrow. Plate VIII. Fig. 1, 2. 



Explanation of Fig. 1. shows the carriage, within the shafts of which, A, 



the plate. the horse is placed: the carriage wheels are intended to be 



half the width of the butts or stitches, so that once going 



up, and once returning, will be sufficient to clear each butt 



from weeds. 



B, The hoe, or harrow, which is attached to the car- 

 riage by the chains C C. The harrow may be raised higher, 

 or sunk lower, or placed more on one side or another, as 

 occasion may require, by altering the position of the chain, 

 as will appear by an inspection of the plate. 



DDDDDD, Six double rows of teeth, or knives, which 

 are so placed in the frame, that each double row may pass 

 up the interval betwixt the roAvs of corn, and cut or pull 

 up the weeds, that grow in such intervals, without injuring 

 the corn. These knives are strong, and have a sharp edge 

 in front. 



E E Are the two handles, by which the person who holds 

 them may direct the knives, or teeth of the harrow, to pass 

 in straight lines up the intervals. 



Fig. 2. shows the underside of the weed harrow, that the 

 positions of thedouble rows of the knives, and of the space 

 left to prevent the corn being injured, may be more clearly 

 seen. 



Certificates in Favour of Mr. Curweti's Harroio. 



The harrow At the request of J. C. Cunven, Esq., I beg leave to 



cle *? a11 the state, that I have been present, when Mr.Curwen's harrow 



for cleaning drilled corn has been used, and have worked a 



little with it myself; that its effect appeared to me most 



highly beneficial in clearing a>yay in the spring all the 



weeds, 



