. Canadian forest industries 1886-1888. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. iS THE CANADA LUMBERMAN. November, 1888 TRANSMITTING POWER - ROPES+£+GROOVED+WOOD+PULLEYS The purpose of this cut is to illustrate the possibility of carrying power upwards to ft great luifjltt ]>ij the DODGE SYSTEM OF POWER TRANSMISSION BY MANILLA ROPES AND GROOYED WOOD PULLEYS THIS SYSTEM WILL MAKE AVAILABLE MANY WATER POWERS NOW fifth, it requires a man in the business to put one on right, and some on a rope. EVERY railroad which crosses a moun
. Canadian forest industries 1886-1888. Lumbering; Forests and forestry; Forest products; Wood-pulp industry; Wood-using industries. iS THE CANADA LUMBERMAN. November, 1888 TRANSMITTING POWER - ROPES+£+GROOVED+WOOD+PULLEYS The purpose of this cut is to illustrate the possibility of carrying power upwards to ft great luifjltt ]>ij the DODGE SYSTEM OF POWER TRANSMISSION BY MANILLA ROPES AND GROOYED WOOD PULLEYS THIS SYSTEM WILL MAKE AVAILABLE MANY WATER POWERS NOW fifth, it requires a man in the business to put one on right, and some on a rope. EVERY railroad which crosses a mountain divide avails itself of the pre- cipitous sides of streams to find practicable grades to and from the summit levels. These streams often have considerable volume and rapid fall. The rail- road is frequently at an elevation of several hundred feel above the water, with mountains behind, capable of furnishing inexhaustible supplies of raw material, mineral or vegetable. Heretofore the utilization of such material near the place of supply has gener- ally been impracticable, because of the impossibility to transmit the power of the stream up the mountain side to the neighborhood of the means for transporta- tion. In such a case as that represented, however abundant may be the raw- material, the cost of sending it down to the water level, and returning the manu- factured article to the level of the railroad, might easily so handicap the product as to exclude it from the market. The Dodge system, however, renders it possible to laugh at difficulties such as this. To this transmission a few hundred feet more or less is of no moment. A rope suspended in the air will break near the upper support when the gross weight of the suspended portion exceeds the tensile strength of the rope. The tensile strength of Firmus rope, one inch in diameter, is 9,000 lbs., , it will break only when the suspended load amounts to 9,000 lbs. The weight of 1,000 feet Firmus tope having that diamete
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectforestsandforestry
