Fig. 69.—Tractor Arrangement
Types of tractors are indicated in [Figures 68] and [69]. A has a 4-cylinder vertical engine in front, driving both wheels by bull gears, while B is a 2-cylinder horizontal engine in the center, driving both wheels by chains. C has a 4-cylinder vertical engine set across the frame. These three types have riveted steel frames, to which the parts are attached.
In D, the drive is entirely enclosed within the rear axle housing, and the rear part of the frame is formed by the axle housing and the housing of the change speed gear.
E has a 1-cylinder horizontal engine with a single chain drive, while F has a similar engine but drives to both wheels.
G has no frame, its place being taken by the crank case of the engine and the housings of the parts of the transmission. G and H have 4-cylinder vertical engines, G driving through an enclosed rear axle and H through bull gears.
Fig. 70.—“Gray” Tractor
[Figure 70] has one broad wheel instead of two narrower ones, this being placed inside of the frame instead of outside. It has a 4-cylinder vertical engine placed across the frame, and drives through two chains.
