440 



FARM MOTORS 



Fig. 319. By inspection it will be noticed that this style 

 of mounting is similar to that of Fig. 317, but in addition 

 to this there is a heavy curved axle which passes from 

 the bracket down beneath the fire box and up to the 

 bracket on the opposite side. Although this style of 

 mounting is considered superior to the one previously 

 described, in order to prevent springing of the axle and 

 the consequent wobbling of the wheels it will be neces- 

 sary to make the axle too heavy for practice. Although 



the bad effects of the strain 

 on the boiler are practically 

 all removed by passing the 

 axle beneath the fire box, 

 the effect of the wearing of 

 the boxings in the hubs is 

 still uncared for. This al- 

 lows the wheels to travel 

 out of a vertical plane and 

 wear the gearing irregu- 

 larly. Fig. 320 shows an 

 end view of this style of 

 mounting, with the addi- 

 tion of springs. These 

 springs are a benefit to a 



traction engine in that they take the jar off the parts as 

 the engine travels over rough roads or pavements. 



583. Rear mounting. Rear mounting, as a rule, is not 

 as simply done as side mounting. However, it has some 

 advantages over the other. Fig. 321 shows one type of 

 rear mounting which has its merits. The brackets which 

 support the boiler and the engines are attached to the 

 corners of the water leg, thus removing the strain from a 

 weak point to one which is stronger. By having the en- 

 gine rear-mounted the axle upon which the drive wheels 



FIG. 320 SIDE-MOUNTED ENGINE 

 WITH SPRINGS AND TRUSS BAR 



