Abstract
The writer made experiments on the relation of the crumbling characteristics of puddled clods to the load and crumbling characteristics of puddling rotors, in order to study various matters related to the mechanical engineering and soil physics.
(1) Clods crumbled with puddling rotors showed an equal state below the crumbling limit, while in the range of the break crumbling, loamy soils were easier to harrow than clayey soils. As for the stirring-breaking effect, the higher the lugs, the greater the effects.
(2) The electricity consumption for puddling showed a constant value in the range of the natural crumbling in the range of the break crumbling, the former was found to be in inverse proportion to the latter; and towards the crumbling limit; the formerr showed an increase, reaching the maximum value close to the crumbling limit.
(3) The crumbling limit proved to be a physical critical point, and it was witnessed that the most effective puddling was done below the crumbling limit.
