Logging; the principles and general methods of operation in the United States . brake bands andwooden friction blocks. The cable and empty cars are returnedto the head of the incline by an auxiliary steam-driven engine. A snubbing device of the above character was operated on a4500-foot incline on which there was a difference of 1300 feetelevation. The grade on a portion of the road was 50 per centand averaged 30 per cent for the entire 1 K ^H Fig. 85. — A Hydraulic Snubbing [Machine a, side view. b. top view. One car holding 6000 feet, log scale, a total weight of about20 tons, was
Logging; the principles and general methods of operation in the United States . brake bands andwooden friction blocks. The cable and empty cars are returnedto the head of the incline by an auxiliary steam-driven engine. A snubbing device of the above character was operated on a4500-foot incline on which there was a difference of 1300 feetelevation. The grade on a portion of the road was 50 per centand averaged 30 per cent for the entire 1 K ^H Fig. 85. — A Hydraulic Snubbing [Machine a, side view. b. top view. One car holding 6000 feet, log scale, a total weight of about20 tons, was lowered with a i-inch plow steel cable. A greaternimiber of cars could have been handled by increasing the sizeof the cable, but since the daily requirements were only 30,000feet, log scale, this was unnecessary. In a western operation, which had a 20 per cent grade nearthe end of its logging railroad, the problem of lowering cars wassolved in the following manner: A track was built up the slopefrom the main line to a bench on which a yarding engine was INCLINES 301 placed both for skidding logs and loading cars. A f-inch cablewas laid along the track from the bottom of the incline to the topwhere it was passed through a block in the rear of the yardingengine and then carried down the track to the starting end of the cable was attached to the forward end of theempty cars, and the other end to the drawhead on a locomotivestandi
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisheretcet, bookyear1913
