The above is a perspective view of H. Ber-Ws machinery1 for grinding and reducing gold quartz .to an impalpable powder, and amalgamating the said ground quartz with quicksilver. The same letters refer to like parts. The machinery here represented exhibits a set of stampers placed on an elevation above the pulverizing and amalgamating basins. The stampers are of the usual form, here exhibited'.' A strong frame is erected. "A is a cross sill or bearing brace, one on each side, having journal boxes for the lifter shaft, H, "which receives motion from the main shaft, D, which" is driven by animal, water, .or steam power, giving motion to the crank through the connecting rod, C. The cog'wheel, F, gears into the one, G, on shaft, H, and rotates the lifter shaft. . On this shalt are a series of horns, or lifters, and by some called "wipfcrs" I, for lifting the stampers. There are slois in the vertical- shafts or arms of the stampers, the lifters take into said slots ,-s they revolve, and lift 'each stamper to a height corresponding with the length' of the lifter (15 inches) when it—the stamper drops down, 45 fumes m a minute, on the quartz in the trough, with a blow like that of ahammerweighing600lbs.; M is the cast metal bottom ol the quartz .trough; N'is a wire screen through which the pounded quartz —reduced to about the size of small shot— paises from the stamper trough to the receptacle, O, into the. several spouls, P P P P, and thence into the pulverizing and amalgamating' basins. On the other side of the stampers is an inclined iron plate to guide the ore under the stampers. The upright shafts or aims of the stampers are guided through openings in the guide boards, B B, to drop perpendicularly on the quartz; LL are the hammers of the stampers; they are made of the best chilled iron, and ate so'formed as to do double duty the top- weights, K K, being hammers also and capable of supplying the places of L L. THe pulverizing and amalgamating basins are set in an-inclined position. Four of these basins, Q Q Q 0, are shown set in one frame, receiving the pounded quartz—it is pounded .with a small stream of water flowing in— from the spouls, P P. Each basin is a large circular iron' vessel, like a potash kettle, and set inclined at an angle of about 45. The basins are made to revolve, and this gives each ball a rotary motion on its own axis contrary tothemotion ofthe basin. There is one ball, R, for each basin. Each' ball keeps"rolling in the lower inclined part, Z, of its basin, into.which Hie pounded quartz is gathered, and there exposed to the rolling pulverizing weight and motion ofthe ball, which rolls on the quartz while the basin is continually presenting a new surface, to change the position ofthe quartz, as it (the basin) rotates on its axis. The quicksilver is placed in the lower part ot the basin, and the weight of the ball and its motion, keeps it in continual contact below the surface with the pulverized quartz. This prevents any of the oxide of iron, which may be in the quartz, from forming a coating to prevent the contact of quicksilver with the gold-the oxide is rubbed off and passes out with the surface water. It is therefore superior to a mere surface amalgamator. Each ball weighs about 3,000 lbs., it can be cast solid, or for convenience, cast hollow, and then filled with black sand at the mines. The ball motion is the best to reduce the quartz to an impalpable powder, inwhichslate itmust be for proper washing, or for amalgamation with the mercury. The lighter matters pass off at the lower lip of each inclined basin through a spout. The basins are therefore pulverizing, washing, and amalgamating machines. These .basins are each made with conical funnels reaching dowli'tothe lower bearing ,of each. These fanrieisare not shown, but it will explain their form to say, they are shaped in elevation, like the commonkind. which gives them a. firm bearing below, to sujiport each basin. Said1 funnelsare made hollow so as to adpiit ofbeing.madeinto furnaces for-heating the ' basins to promote the quick amalgamation of the metals, whichis said to be done by a certain degree of heat. Mr. Berflan also proposes to Igt the exhaust steam? %vhen an engine is employed for driving), into CTie water Ol the stampers, so as to 'heat it also. The same wa n tor that is employed for stamping the quartz' passes into the basins; this is to economize the water in places where it is scarce. The waste water and impurities pass from the ba- ?tlie basins—they having vertical axes—by having cog teeth, Y Y, cast on the outside at the bottom t' each. A cog pimoiij Jt X, on a. cross shaft, takes into the teeth on'its basin, and gives it a rotating motion on itsaxis. The shaft of these pinions, X, has a central pinion, W, that receives motion from the large middle wheel, V, on a central shaft, and which thus moves all the basins. Any number of basins may thus be set in rows, and thus moved by a band, U, from the pulley, E, ofthe main shaft D. driving a pulley on the central shaft ofthe large cog wheel, V. The arrangement, motions, and operations of the several parts are now explained. So far as. has been experimented with, ifc tikes aboutone horse-power to work one tort of ore in twelve hours. It takes about twenty horse-power to work twelve stampers and four of-tittW?fge"rjaSins. The price.all corn-pleie, is $36l/ per horse-power; one, two, three, four, ormore, basins can be.employed. To prevent the attendants taking out any of the amalgamated gold; the basins can be covered and locked, to be opened by the superintendent only at certain specified times. We have seen some very flattering notices 'of this machine, in cotemporary journals. A large machine is fitted up at the Novelty "Works this city, where a number are being manufactured for California; and one for tfee New Jersey Zinc Co., to be employed lor reducing the zinc ore. Measures have been taken to secure patents in foreign countries for this machine. IJore information may be obtained by callisig, or by letter addressed to Mr. Berdan, at the Astor House, NewYork.
This article was originally published with the title "Gold Quartz Pulverizer and Amalgamator"