. Bulletin of the Department of Agriculture. Agriculture; Agriculture. LOGGII^G IN THE DOUGLAS FIR REGION". 145 near the railroad and the other end was taken up the hill, passed through a block suspended to a guyed tree about 25 feet from the ground, and made fast to a stump. Two stops (fig. 50) were clamped on the standing line, one at the top where the logs were picked up, the other at the foot where the logs were landed. A carriage of the design shown in figure 50 was used, the snubbing line leading through it to the load. A 10 by 12 inch wide-drum yarding engine, on which an extr
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. LOGGII^G IN THE DOUGLAS FIR REGION". 145 near the railroad and the other end was taken up the hill, passed through a block suspended to a guyed tree about 25 feet from the ground, and made fast to a stump. Two stops (fig. 50) were clamped on the standing line, one at the top where the logs were picked up, the other at the foot where the logs were landed. A carriage of the design shown in figure 50 was used, the snubbing line leading through it to the load. A 10 by 12 inch wide-drum yarding engine, on which an extra wide brake had been installed, was set at the top of the slope and used to lower the logs. Any friction drum engine with braking power suffi- cient to hold the load can be used. A three-drum en- gine could be used both to yard and lower the logs. To get the full capacity out of the system, however, one should use a separate engine with a special brake drum. The load was hooked on the end of the snubbing line (fig. 51) and hoisted till a ball fixed on the snubbing line just above the hook engaged in a catch in the carriage. This catch held the load up. The snubbing-drum fric- tion was then thrown off und the load was snubbed to the landing place. At this point the carriage came in contact with the stop on the lower end of the line. This stop held the carriage and freed the snubbing line, allowing the load to be lowered to the ground. When the load was unhooked the signal was given to return the carriage to the woods. The ball on the snubbing line again came in contact with the catch of the carriage, releasing the carriage from the stop. The following crew was used to operate the snubbing device: 1 engineer. 1 fireman. 1 wood buck (half time). 1 hooker on. 61361°—Bull. 711—-18 10. Fig. 51.—Method of hooking load, Nestos overhead snubbing Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - c
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