AGRICULTURE AND PLANTING. 89 



Ow the Construction of a Couch Grass Rake. 



DISSERTATION IX. 



On the Construction of a Couch Grass Rake. 



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LATE VII. Fig. 1. Is a profile of the whole machine with its appendages. Plate 



VII. 

 A. the land wheel, thirty-two inches diameter, which turns on an iron arm, Fig.i. 



one inch and a quarter diameter, fixed on the end of the wooden axletree B. in 

 the same manner as those of coaches, &c. 



The nave of this wheel is seven inches diameter at the thickest part, and eight 

 inches long ; the felloes are two by three inches square, and the spokes in proportion. 



B. is a section of the wooden axletree, exactly the length of the distance be- 

 tween the two wheels, (viz.) forty-eight inches, and is five inches square. Upon 

 the ends of this axletree are fixed two iron arms, upon which the laud wheels 

 move. 



C is a profile of a part of the right hand shaft of the machine, mortised into 

 the axle-tree, where it is about three by three inches and a half square, and is 

 in length about eight feet. 



D. is a section of the rake head, four by three inches and a half square. 



E. is a profile of one of the rake teeth, which is eighteen inches long below 

 the wood, and one by three-eighths of an inch square next the wood, tapering 

 towards the point. 



F. is the regulating wheel, ten inches diameter, and which can be so adjust- 

 ed that the rake teeth may be set to any depth. 



G . is a profile of the right side handle, which is fixed to the rake head, with 



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