oninvestment, depreciation and storage charges per yearshould be divided by 45 (that being the average numberof days work of farm tractors per year) and to thisadded the cost of fuel, oil and wages per day. The costof tractor plowing figured out to about $2.50 per acrein 1920 and to from $3 to… … 9—Diagram of automobile steering linkage (same as Ackerman orwheel steering) for trailer. Fig. 10—Diagram of fifth-wheel or axle steeringfor trailer. In conjunction the diagrams are meant to show that diagramssuggesting axle steering can represent automobile steering as well, as withthe same…
Automobiles · Aeronautics
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