. Farm machinery and farm motors. TRACTION RNCINKS 439 upon it. It is ob\ioiis that this puts undue strain uponthe boiler shell at a point where it is the weakest. Theweight of the boiler and the engine is thrown upon thesebrackets and in such a manner that it has a tendencyto throw the inside of the axle down and the outside will tend to throw the tops of the drive wheels to-gether and the bottoms apart. The weight is also throw^nupon these axles so that that part of the hub of the fly-wheel next to the engine will wear faster than the -middle,and as a result the wheels will tend to b
. Farm machinery and farm motors. TRACTION RNCINKS 439 upon it. It is ob\ioiis that this puts undue strain uponthe boiler shell at a point where it is the weakest. Theweight of the boiler and the engine is thrown upon thesebrackets and in such a manner that it has a tendencyto throw the inside of the axle down and the outside will tend to throw the tops of the drive wheels to-gether and the bottoms apart. The weight is also throw^nupon these axles so that that part of the hub of the fly-wheel next to the engine will wear faster than the -middle,and as a result the wheels will tend to become wobblyin action and wear the teeth of the transmission gearingunevenly. A truss bar similar to that of Fig. 318 re-moves a great deal of the strain from the water leg, and. FIG. 319 also tends to hold the axles in line with each other, andthus keep the drive wheels more nearly vertical. An-other method of side mounting an engine is shown in 440 FARM MOTORS Fig. 319. By inspection it will be noticed that this styleof mounting is similar to that of Fig. 317, but in additionto this there is a heavy curved axle which passes fromthe bracket down beneath the fire box and up to thebracket on the opposite side. Although this style ofmounting is considered superior to the one previouslydescribed, in order to prevent springing of the axle andthe consequent wobbling of the wheels it will be neces-sary to make the axle too heavy for practice. Although the bad efifects of the strainon the boiler are practicallyall removed by passing theaxle beneath the fire box,the effect of the wearing ofthe boxings in the hubs isstill uncared for. This al-lows the wheels to travelout of a vertical plane andwear the gearing irregu-larly. Fig. 320 shows anend view of this style ofmou
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