抄録
Method of installing between the tiller type tractor and a Japanese plow have some mutual relation as following;
1. Formulae between depth of furrow (t) to running tractor wheel and working depth (y) are as follows (Fig. 1),
t=acosα+b/ly; y=lsinα
Working depth is max. when t=y, and always depth of the plow increases up to point of t=y.
2. Width of wheel tread and wheel type landside (Fig. 3) decrease in draft resistance of the plow.
3. Side draft caused by the increase of wheel tread, decreases with the increase of working depth, because the eccentricity of plow point from center of gravity of tractor decreases by the change of relative position of plow and tractor.
