Experimental Studies on the Load and the Harrowing Characteristics of Puddling Machines Part III

On Various Characteristics of Trailing Puddling Machines

Abstract

The writer investigated the load and the crumbling characteristics of trailing puddling machines to be drawn by small tractors, and studied their adaptability as puddling machines. The results are summarized below:
(1) The electricity consumption of trailing puddling machines showed a little increase in comparison with puddling rotors in the range of slippage ratio from 20 to 30%. A greater influence on electricity consumption was seen by the increase in speed.
(2) The puddling resistance added to the resistance of serriform puddling machines (puddling machines with serrated discs) when the slippage ratio was over 25%. For this reason, the slippage ratio of trailing types should be lowered, and at the same time such wheels as exhibit greater driving force have to be employed.
(3) For the same amount of electricity consumption, trailing puddling machines exhibited higher effects in crumbling and stirring soil in upper layers, but it has less influence on lower layers. Therefore, the hardness of soil increased vertically downwards.
(4) The puddling work with heavy tillers should advisably be done with trailing types for the higher crumbling-stirring effect and load efficiency, for practical purposes.