The machinery which we have here illustrated is for raising metals and minerals from deep mines. It is the invention ol M. Cave, a machinist of Paris; it was illustrated and described in the "Le Genie Industriel," from which this is a translation, so altered as to lender it clear to our American readers. The plan of MOHS. Cave is quite different from any heretofore in use, and does him no small amount of credit. It is applicable in raising heavy loads, whether in working mines or coal pits, and affords a continuous sell-acting hitching-on of the loaded cars or buckets. Fig. 1 is aside viewof the succeeding figure. Figure 2 represents a iront view of the apparatus, with section of the cranks with which it is attached. it will be seen that this apparatus is composed of two parallel pullies, G G, with octagon faces between the flanges, and mounted at each end of the axle are iron shaits, H, which are each controlled by the cog wheels I, into which mesh upright pinions, J, mounted on the axle of the shaft, K, this last being none other than the movable axle or crank, which receives its rotary movement from a steam engine or power wheel. On the face of the two pullies G, pass the endless chains, L L, of which the links are of the exact length of each side of the octagon. Each of these chains carries, at fixed distances, the gudgeons or projecting buttons, a a, for the purpose ol suspending the wagons, M, in ascending or descending. These wa- i Eons are simple boxes placed on four wheels; they are provided on each side with iron handles or cars, b h, which place themselves on the buttons, a a, of the chains at the instant they pass, as represented. Allowing the mine to have two galleries, at the height of the first gallery, the wagon M, (which has been conducted either directly by the railroad, N, or by the intervention of a horizontal movable frame work, 0) is suspended by the .buttons to the two ascending sides of the chain, and, being thus carried away by the chain is inevitably carried to the top of the apparatus. It then descends (always suspended by the same buttons) directly upon a railroad, R, placed at the entrance of the pit, and which carries it from thence to the spot where it is desired to empty it. In the descent of the" chains to the bottom of the pit, where they pass over two parallel pullies, Q Q, similar to the first, and both mounted on the same axle, they are enabled to serve a number of successive galleries situated at different heights. In the engraving are shown two galleries placed at a little distance from each other. When the same apparatus is enabled to effect at the same time the ascent of the loaded wagons, and the descent of the empty ones, the constructor places at the entrance of the pit, and at the mouth of each gallery, chariots or movable frame work, O, O', O", which are made simply of a wooden frame on four wheels which carries to each end, sections of the rails, R, for the purpose of receiving successively each of the wagons which ought to approach the chain either in ascent or descent This frame work thus receives a strong impetus from a mechanical power very simple which has been applied by M. Cave, or the wagons can be drawnpart of the way along the galleries by horses, as is common in sonw coal mines, and then pushed between the chains by hand, to be hitched on by the catch buttons, a a. The endless chains are composed of long links which, at certain distances, are provided with gudgeons or projecting buttons, a o, upon which the car is supported or hinged by the aid of these gudgeons made in a flattened oval form. Mining is well enough understood in America, for there are thousands of miners among us who have had great practical experience; but although this is true, there is no such a thing as mining practiced as it is conducted in Europe. The reasons for this are sufficiently obvious; the newness of our country, and the absence of any necessity as yet for the working of deepmines. Koneof our coal mines are deep, but the time is coming when we will have to dig deeper in search of both coals and metallic ores; this engraving will then be remembered and its merits appreciated. In presenting such apparatus and plans, our objectis to exhibit improvements which may be required for useful operations, present or prospective.
This article was originally published with the title "Mining Machinery" in Scientific American 8, 6, 48 (October 1852)