. Canadian forest industries 1901-1902. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 14 THE CANADA LUMBERMAN December, 1902 A NOVEL LOGGING OPERATION. Cap}. J. B. Thomas, manager of the lumber and veneer operations of William E. Upter- grove & Bro., New York, at their Eastern Tennessee plants at and near Johnson City, Tenn., has an exceedingly rough logging pro- position in the White Rock mountain district. As is well known, in the ordinary rough country where the coves are too steep to permit of the use of logging railroads, slides are built
. Canadian forest industries 1901-1902. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. 14 THE CANADA LUMBERMAN December, 1902 A NOVEL LOGGING OPERATION. Cap}. J. B. Thomas, manager of the lumber and veneer operations of William E. Upter- grove & Bro., New York, at their Eastern Tennessee plants at and near Johnson City, Tenn., has an exceedingly rough logging pro- position in the White Rock mountain district. As is well known, in the ordinary rough country where the coves are too steep to permit of the use of logging railroads, slides are built by means of which the logs are slid down to the line of the railroad. Some of the coves on White Rock mountain are so cut up with cross coves as to make the expense of building slides prohibitory. Captain Thomas has therefore invented, constructed, and has in daily use a trolley line log conveyor, which is illustrated in the accompanying sketch. The three-quarter inch wire cable in this instance is 3,700 feet in length, and runs in practically a straight line down the cove. It is stretched and firmly anchored at each end to frees. By means of a series of carriers, the sheave pulleys of which ride the cable, the logs in trains of five are let down the line, being steadied by means of the brake attached to a hoisting drum. The logs are poplar and of large size, running from 500 to 1,200 feet each. A 5 horse power gasoline engine at the upper end of the cable line brings the carriers back to the several skidways where the logs are being loaded. The illustration of the operation is almost self-explanatory. Grab hooks are driven into the sides of both ends of the logs, and the logs are then hooked on to the carriers. The car- riers are chained together for the entire length ot the train of logs. The invention is working admirably and economically, and it takes less than 30 minutes to deliver a load from the top of the inclined railway to the bottom and to return the carriers to the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectforests, bookyear1902
