FARM IMPLEMENTS, 



PUmCIPLES OF THEIE. CONSTEUCTION 

 AND USE. 



PART I. 



MECHANICS. 



CHAPTER I. 



INTRODUCTION. 



No farm, even of moderate size, can be well fur- 

 nished without a large number of machines and im- 

 plements. Scarcely any labor is performed without 

 their assistance, from the simple operations of hoeing 

 and spading, to the more complex work of turning the 

 sod and driving the thrasliing-machine. It becomes, 

 therefore, a matter of vital importance to the farmer 

 to be able to construct the best, or to select the best 

 aheady constructed, and to apply the forces required 

 for the use of such machines to the best possible ad- 

 vantage. 



A great loss occurs frequently from the want of a 

 correct knowledge of mechanical principles. The 

 strength of laborers is often badly applied by the use 

 of unsuitable tools, and that of teams is partly lost by 

 being ill adjusted for the best hue of draught ; as, for 



