Studies with the Kupfer Crane

Skidding of logs uphill is a big task which can not be done manually. Various types of winches are utilized for this purpose. The friction on the ground due to skidding of logs calls for powerful winches but if logs are hauled along the skyline then the power required is much less. The present study in the hauling up by short distance skyline crane was conducted in Logging Division Uttarkashi U.P. in December 1968. The cost of working comes to Rs. 574 per cu m which is quite reasonable for such work. A further reduction in cost figures by 10 to 12% may be possible if the steps suggested in the paper are taken up.