276 Transactions op the 



referring to c, Figure 3, this is shown in connection with the carrier, rope, 

 and pulleys, and will be understood at a glance. 



The load usually attached to one of* the carriers is from seventy-five 

 to one hundred and fifty pounds; but I have suspended and carried eight 

 hundred pounds on an ordinary carrier, as a kind of test load. 



For conveying ore boxes or sacks one of these carriers is employed, 

 as the load rarely exceeds one hundred and twenty-five pounds; but for 

 a load of three hundred to four hundred pounds, two carriers are em- 

 ployed in manner shown in Figures 5 and 6. 



The ore box is usually made self-dumping, and the frame is provided 

 with joints necessary to enable it to turn all curves, vertical or 

 horizontal. For still greater loads the number of carriers can be 

 increased in like manner. 



In Figures 3, 5, and 6 the arrangement of the pulleys is such that any 

 vertical angle can be made by the rope, and the load can be conveyed 

 over any mountain, ever so steep, or across any valley; but to turn a 

 horizontal angle, or to pass around a spur of a hill, a different arrange- 

 ment of pulleys is necessary. The manner in which this is done is 

 shown in Figures 7 and 8. 



Figure 7 shows the mode of turning an acute angle. 



The projecting arms of the carrier (Figure 4) prevents the application 

 of a horizontal pulley at the interior angle; but, in the exterior angle 

 this is the usual mode, and but one pulley is necessary. 



In passing an acute interior angle two horizontal pulleys are used, the 

 rope passing on to the farther pulley half around, thence to the nearer 

 pulle}", and thence in the direction required, in manner shown in Figure 

 7; the rope running in the direction of the arrows. 



In passing a moderate angle or curve (Figure 8) a series of pulleys are 

 so placed that the rope of the interior angle leads fair on to the pulleys, 

 and is slightly deflected in passing off", leading fair on to the next pulley, 

 and so on until the curve is completed. I find that the rope should not 

 be deflected between one set of pulleys from a true line to exceed ten 

 degrees. By referring to Figure 8 it will be seen how this is done. 



Figure 9 shows another method of conveying a light car containing 

 ore. The lower end of the suspension bar attached to the rope is fitted 

 with a bar set at an angle and fitted with notches. The car is placed 

 on a track slightly descending. As the notched bar comes along it 

 passes between guides and catches a similar bar attached to and over 

 the car, retaining it in the notches, and carries the car along the track, 

 which being descending is separated from the car and the car is then 

 carried along to its destination, where it strikes an ascending track 

 which lifts the frame of tSe car above and away from the suspension 

 bar, thus leaving the car behind. 



Having thus described the modus operandi of my system of transpor- 

 tation by means of an endless rope, and which has been perfected after 

 many years of study and experiment, in accordance with the general 

 suggestions contained in your notice I will add some data of work and 

 cost. Speed of rope, say 200 feet per minute; weight of each load, 100 

 pounds; distance between each load, 50 feet; then z -$> X 100 =s= 400 

 pounds per minute X 60 = 24,000 pounds per hour, or 120 tons per day 

 of ten hours or 288 tons per day of twenty-four hours. The amount of 

 ore deliverable per day can be more or less, according to requirements. 

 The cost of construction varies according to location and work to be 

 done, but may be placed at from five thousand dollars to seven thousand 

 five hundred dollars per mile. The cost of delivering material, includ- 



