1952 Volume 34 Issue 12 Pages 370-372
For the purpose of increasing the efficiency of operation by analysing the operation method by Tosa-type pick, we studied states of use of Tosa-type pick on loading and unloading a trolley used for log transportation. The results obtained are as follows:
1. The larger d (diameter of logs) is, the smaller P (rate of use by pull method) is in the following relation: P=ad-b and as d becomes large, the various use methods gradually increase.
2. We must use the roft-hook against slender log and use jointly together the hook lever against big log.
3. We must improve on the point and the back of Tosa-type pick which has been used at present.