HORSE-POWERS 139 



is located between the two five-eighths inch hooks and rear 

 wheel, the short ends of the hooks coming outside of the 

 iron frame. In order to prevent the nuts from working 

 loose, the ends of the hooks may be riveted. When this is 

 done, casting 23 iW may be bolted on top of the flange 

 of the main frame. A hole to receive it will be found on 

 the front end of the power frame. Next insert the iron 

 lever into its socket, 2ioW, and tighten the set-screws, 

 which should not be tightened too much, or they will cause 

 unnecessary strain on casting 2ioW. Put the ratchet in 

 casting 232W with the hole down and with the notches 

 turned towards the front. Then, put it in the notch that 

 holds the brake from the wheels, and bolt it to the brake 

 lever below. Place the brake-block casting, 2o8W, on the 

 right end of the pipe and 2ogW on the left ; bring the blocks 

 against the wheels and turn the set-screws up tight; then 

 loosen and remove, and with a file or cold chisel, flatten 

 a place on the pipe for the set-screws. This will prevent 

 the pipe from turning in these castings. The pipe is coun- 

 tersunk for the set-screws in 2ioW, these set-screws being 

 tightened at the factory. The key with straps should be 

 nailed to the driver's platform. This is used to prevent 

 the brake from dropping onto the wheels when not wanted. 

 The brake is applied by the foot. Do not press the ratchet 

 down harder than necessary. 



The Spur-Wheel and Bull-Pinion Sfafts. The key- 

 seats of these shafts are cut in line with each other and 



