HORSE-POWERS 141 



of the horse-power is about 80 per cent., each horse will 

 pull about 200 pounds on the whiffletree. 



The Number of Horses. When desired for light 

 work, the regular twelve-horse power with six sweeps may 

 be used with only six horses by tying up equalizers on the 

 empty sweeps and attaching teams to alternate sweeps, or 

 by hitching a single horse to each sweep. In the same 

 manner any of the other sizes of horse-powers may be used 

 with half the usual number of horses. Since different 

 numbers of sweeps are used the holes in the bull-wheel are 

 marked with dots so that the brackets and end-supports for 

 the sweeps may be easily placed in their proper positions. 

 One of each of these castings should be first bolted to the 

 holes with three dots near them for this set of holes is used 

 with any number of levers. Bull-wheel 8gW has the dots 

 at the side of the holes for twelve horses, inside of the holes 

 for ten horses, and outside of the holes for eight horses. 

 Bull-wheel loW has the dots at the sides of the holes for 

 twelve horses, inside of the holes for ten horses and out- 

 side of the holes for fourteen horses. 



