I3O SCIENCE OF SUCCESSFUL THRESHING 



engine tender does what its name implies, that is, it keeps 

 a good supply of coal and water near at hand. 



The Contractor's Fuel-Bunkers and Tanks are built for 

 the purpose of serving as a tender, but they are mounted 

 and carried on the engine itself instead of on separate 

 trucks. They are attached to the axle cannon-bearing in 

 the rear of the engine, in the same way as the common 

 platform and tank, which they displace. This way of car- 

 rying the fuel and water supply is more convenient than 

 with a separate tender; besides, the weight being sup- 

 ported on the rear axle, the engine has more tractive power 

 for plowing or hauling. The contractor's fuel bunkers are 

 detachable from the tank and can be removed when firing 

 with straw. The contractor's fuel bunkers and tank may 

 be attached, in the field, to any Case side-crank engine from 

 30 to 75 H. P. inclusive. They are always furnished on 

 the noH. P. size. 



Tank Pumps. At least one tank with each outfit 

 should have a tank pump, with a capacity of about two bar- 

 rels a minute. The pump is of use not only in filling the 

 tank, but also in rapidly transferring water from it to the 

 platform tank, engine tender, or barrels. When equipped 

 with a sprinkling hose, it is also useful in washing out the 

 boiler. 



