ARRANGEMENTS FOR LOADING LOGS ON WAGGONS, SLEDS, AND CARS 



75 



locomotives with one boiler. Tiie rear engine is held rigidly to the boiler; the forward engine 



accommodates itself to the curves by a lateral motion. The leading and the trailing truck, 



controlled by a radius bar, are free to swivel and swing into the curves. The exhaust from 



the small cylinders of the rear engine acts as the live steam for the larger cylinders of the 



forward engine. The Mallet locomotive, when starting a train, is practically non-slipping. The 



weight is distributed over 12 to 16 drivers. 



(f) Cost of hauling by logging locomotives :-The cost of hauling logs on a standard railroad, 



per carload of 40,000 pounds, amounts to -^5 for distances of 1 mile to 50 miles, and to x6 for distances of 



50 to too miles. In small jobs, the cost of hauling can be given as ranging from 30 cents to 60 cents 



per 1,000 feet b. m., for a hauling distance of from 5 to 10 miles. The logger in the Redwood belt counts 



on a hauling expense (for payroll, for wear and tear) of 5 cents per mile and per 1,000 feet b. m. 



VI. Mono rail traffic. The mono rail portable railway is a French invention (Gaillet) and has been 

 tried to a limited extent in India. It consists of one rail only, resting on steel sole plates at intervals of 

 a few feet, and is laid down direct on the surface of the ground. Rails are joined together by scabbard 

 fish plates. The trucks have two low wheels, grooved at the rim, the carriage hanging between the wheels 

 a few inches above the rail. Cars are bal- 

 anced by a telescopic rod and are kept in 

 balance, like a bicycle, by the motive power 

 itself, which consists of an animal hitched 

 in a frame alongside the carriage. 



The mono rail system might be appli- 

 cable to the transportation of bark, cord- 

 wood, and minerals. 



Experiments are being made to secure 

 locomotion by steam power and balance by 

 the gyroscope. 



PARAGRAPH XI. 



ARRANGEMENTS FOR LOADING 



LOGS ON WAGGONS, SLEDS, 



AND CARS. 



Special loading arrangements are re- 

 quired, wherever vehicles are used, except 

 for bummers and high wheelers. 



(A) LOADING ON WAGGONS AND 

 SLEDS: — 



I. Rolling logs from a higher bank onto 

 vehicles. Only one layer can thus be loaded 

 conveniently. (This method is also used to 

 load redwood and redfir logs from a plat- 

 form on cars.) 



II. Rolling logs up an incline, either with 

 peavies or rope, the top of the incline rest- 

 ing on the tops of he wheels. 



III. A (drum) winch in front of wag- 

 gon, incline behind waggon, pulling logs up 

 by rope. 



Loading by horses. Photo by Clyde Iron Works, Dulutli, Minn. 



