158 



MECHANICS. 



CHAPTER XII. 

 MACHINES FOR HAYING AND HARVESTING. 



MOWING AND REAPING MACHINES. 



The cutting part of the mowers and reapers made at 

 the present day consists of a serrated blade, as shown by 



Fiir. 1T2. 



fingers, shown 



i t 



fig. 172, which passes througli narrow slits in each of the 



forming, when thus united, 

 the cutting ap- 

 paratus, as ex- 

 hibited in the an- 

 nexed figure, of 

 Wbod''s Mowing- 

 machine (figure 

 174). When the 



C'uiitr-ljur. 



machine is used, the motion of the wheels on which it 



runs is multiplied by 

 means of the cog- 

 wheels, imparting 

 quick vibrations, end- 

 wise, to this blade, 

 Bhearing oflfthe grass 

 smoothly as it ad- 

 vances through the 

 meadow, like a large 

 number of scissors 

 in exceedingly rapid 

 motion. 



n?. 171. 



Wood's Mmver. 



The finger-bar, the most important part, nov/ adopted 



