84 MINUTES OF 



On the Conntruction of a Scujfle. 



'DISSERTATION Yll. 



On the Construction of a Sciiffle, 



^Pj" ' JL LATE V. Fig. 1. Is a profile of the scuffle with its appendages. 



^ A A. represent the wheels on which it is carried from one field to another, 



and by which the depth of working is regulated. These wheels turn round upon 

 their axles, and also upon the under end of the upright shank, in imitation of 

 bed castors. 



B. represents the middle beam, to which the horses are fixed. 

 \ C. the side beams. 



D D D. the shank of the shares fixed in the beams by nuts and screws. They 

 are fifteen inches long below the beams, made of iron ; one inch and a half, by 

 half an inch square. 



E E E. the shares riveted on their shanks. 



F. the handle for managing the machine, about four feet three inches long. 

 ilg. a. Fig. 2 is a horizontal view of the scuffle. 



AAA. represent the mortise holes that receive the shanks of the wheels. 



B. the middle beam, about six feet nine inches long, and five by four inches 

 square 



C C. the two side beams, which are about five feet long and four inches 

 square. 



E E E E E. are five shares in the form of an isosceles triangle, the hind side 

 of which is nine inches long, and the other two sides are each tMclve inches; so 

 disposed as to cut forty-five inches clear. 



