3-t JETHRO WOOD; 



hinder or back parts, or near their after mar- 

 gins, for the reception of the handles of the 

 Plough. And these, when duly entered and 

 fitted, are wedged in, instead of being fastened 

 by screws. 



" In the fifth place, the said Jethro Wood 

 claims an exclusive right to his invention and 

 improvement in the mode of fitting, adapting 

 and adjusting the cast iron landside to the cast 

 iron mourld-board. Their junction is after the 

 manner of tenon and mortice ; the tenon being 

 at the fore end of the land-side and the mor- 

 tice being at the inside of the mould-board and 

 near its point. The tenon and mortice are 

 joggled, or dove-tailed together in the casting 

 operation, so as to make them hold fast. The 

 fore end of the tendon is additionly secured by 

 a cast projection from the inside of the mould- 

 board for its reception ; and if any other tight- 

 ening or bracing should be requisite, a wooden 

 wedge, well driven in, will bind every part 



