US707296A - Amalgamator. - Google Patents

Description

lFammi Aug. I9, |902.

G. H. BREYMANN.

AMALGAMATOR. (Apucmon med Aug. 12, 1901,)

3 Sheets-Sheet 2.

(No Model.)

INVENTOR:

WITNESSES:

Patented Aug. I9, |902.

N. N A M V.. E .Dn B um G.

AMALGAMATR. (Application led Aug. 12, 1901.)

3 Sheets-Sheet 3.

(No Modei.)

wwNEssEs.-

UNITED jSTATES;

PATENT FFICE.

GEORGE HIBREYMANN, oF ToLnD'o,oHio.`

`,explvlAlsctLuvlATOR.

SPECIFICATION forming pm of Letters Patent No. 707,296, dated August 19, 1902'. YApplication filed August'lZ) 1901. SerialNef'lrflfi. (No medal.) l

T cir/ZZ whom, it nmz/,y c oncevcf j Beit known that LGEORGE HBREYMANN, a citizen of theUnited States,residing at Toledo,

. in the county of Lucas and State ofOhio,

have inventedcertainvnew and useful Improvements in Amalgamators; and I do declare the followingrto be afull, clear, and exact description of the invention',`suchl as 'will enabley others skilled.y in' the art to which it appertains to make and-use'the same,` reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this speciication a A familiar difficulty encountered in the use of amalgamating-machines is that the quick-A 'silver when agitatedw'ith Mthe gold-bearing material is iinely subdivided into minute particles which on being exposed to the air quickly become oxidized, thus producing a floured mercury. Avery large-per cent. of this floured 'mercury is lost in the tailings, forming a heavy item of expense'in the use of the machine. i' 4 t My invention relates to and its object is to provide means for overcomingthe difficulty y here indicated by the entire eXcl'usionof air during the operation of amalgamation.,y

VMy invention is `also designed to provide means for placing the contentsl ofthe cham-` loer of the amalga'mating-machine under hydraulic pressure' during the amalgamating process, thus insuring a more intimate contact and admiXture between thepulp and the quicksilver` My invention also relates 'to certain details of construction hereinafter described, and pointed out in the claims. Y .l

I -attain the objects above-referred to by means of the device'smechanism, and arrangement of parts'hereinafter described, and shown and illustrated in the accompanying drawings, in which- 1 Figure 1 is a side elevationof my machine,

partly in centrall longitudinal vertical section, with a portion'of theY drum hereinafter;

referred to broken away to slio'wlitsinternal arrangement; Fig. 2, an end' view of ,my machine with a portion ofthe end of the drum broken away to show the form and relation of the rotary agitators hereinafter referred to, and Fig. 3 is a diagrammatic side elevation of my apparatus.-

Like `numerals of reference indicate like parts throughout the drawings.

In the drawings, 1 is a cylindrical `metal. drum closed at bothfends by plates 1L and .havin g circumferential tracks or ways 2,which rest upon suitable -rollers 2, journaled and mounted upon'a stout base or frame 3. The drum is providedwith'a` circumferential rack 4, which uis engaged and driven bypinion 5 on driving-shaft 6, this. shaft being operatively connected with some suitable source of power. a Thejpinion 5'revolves with but is movable along itsshaft andmay be `thrown into andout ofgear with the rack 4.

7 7 are a series of vagitator-rolls disposed at equidi'stant intervals within the drum and near to its cylindrical wall. These agitators are nearly the length of the interior vof the druml and are mounted upon and secured to shafts 7 a, whichy extend at both ends through stuffing-boxes k8 in the plates 1,forming the ends of thedrum.4 These agitators are corrugated or fluted longitudinally. 'lhe longitudinal grooves or channels may bevaried in transverse section to meet the requirements'of the conditions under whichthe machine is to be worked. have'illustrated, for example, the corrugations 7b are serrated, so that the agitators present in transverse section the appearance of a circular saw having large Iteeth, the points of which are acute angles, the angles lat fthe base of the teeth forming pockets. At

In the form which I:

one end of the drum `the projecting extremities of the shaft 7 carry pinions 7( These pinions are all engaged by a gear-wheel 9,

`which has a hub 9, upon which is secured a l 'sprocket-wheel 10. f Thissp'rocket-wheel is driven by-chainll, passing over-sprocketwheel 12 and counter-shaft 13. `This, shaft carries a sprocket-Wheel 14, whichfis driven by chain 15, running upon a sprocket 16 on IOO iirst-mentioned trunnion forms a support upon which the hub 9a ofthe sprockets 9 and p l0 is loosely mounted. A A feed-pipe 2O leads into the interior of the drum through stuffing-box 2l in the end of the trunnion 18. An outlet-pipe 22 leads from the chamber of the drum through a stuiiing-box in the trunniolr 19. The horizontal pipe 2O has at its inner end an elbow and terminates in a pipe disposed and adapted to swing in a vertical plane. The pipe 22 in like manner has atits inner end an elbow and terminates in the pipe 22, which swings in a vertical plane. The feed-pipe 2O is connected with a tank, where water and pulp are mixed, and with a pump, by means of which water is supplied to the chamber of the drum and by means of which the water maybe placed under pressure. (See Fig. 3.) The inlet and outlet pipes are suitably valved. The latter pipe is provided with an upturned U-shaped bend, as shown. The drum is provided with an airvent 23 and with a manhole, which does not appear in the drawings.

The operation of my device is as follows: The drum is provided with a charge of mercury, which partly covers the lower agitators. Pulp mixed with water is fed into the drum through pipe 20, the inner end of which, 20a, is turned toward the bottom of the drum. The pipe 20 is secured against rotationby lneans of a stout set-nut 2Ob at the union between the pipe 20 and the pipe leading from the pulp-tank. The swinging pipe at the opposite end of the drum is in like manner secured by a similar nut 22h. A charge of pulp is ladmitted through the pipe 20, and all valves being closed and the water-supply pump being put in motion the chamber of the` 'drum is now lled with water and hydraulic pressure is applied to the contents of the drum. Power is applied to the shaft 6. The drum through the rack and pinion 4 5 is now caused to revolve, and the agitators are set in motion through the pinions on the ends of the agitator-shafts and the train ofsprocketgearing e, 1o, 11, 12, 13, 14, 15, and 16. As the drum turns slowly on its supports each of the agitators is turned on its shaft and the contents of the drum are stirred and thoroughly mixed. The longitudinal channels or grooves upon the agitators catch the pulp and carry it down into and throughthe mercury, thus after a few rotations of the drum insuring the contact of the mercury with every part of the charge of pulp. Before commencing the rotation of the drum the pipe ends 2Oa and 22 should be turned upwardly, i'or the reason that it' the machinery were started while these pipe ends were embedded in the pulp they would be broken oit. Under some circumstances and with some kinds of auriferous material the operation may be continuous and the pulp may be fed down through the pipe 20 close to the bottom of the drum, while the upturned end of the pipe 22:L will permit the escape of the excess of water and the tailings.

It will sometimes be found desirable to rotate the drum without revolving the agitators. In such case, by means of the clutch 17, the train of gearing which revolves the agitators may be thrown out of gear. In like manner the drum may be allowed to stand motionless by moving the pinion along its shaft out of gear with the rack lt. Thus both of the driving mechanisms may at all times be operated, either in conjunction or independently of each other.

To those skilled in the art lmodifications of the mechanical means by which rotation of the drum and of the agitators is secured and of the means for feedingv and withdrawing the pulp into and from the drum and of placing the contents of the drum under hydraulic pressure will suggest themselves, and I do not, therefore, limit my invention to the exact form of apparatus here shown.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

l. In an amalgamating-machine, the combination of a rotary cylinder and suitable trunnions therefor, inlet and outlet pipes leading through said trunnions and having bent ends within the cylinder adapted to be turned either upward or downward, a series of agitators within the cylinder, means for hermetically sealing said cylinder, operating means for the cylinder and agitators, separate driving connections between the cylinder and agitator-s and the operating means,and means for throwing either driving connections out ot' operation.

2. In an amalgamating-machine, the combination of a rotatable cylinder having an axial inlet and axial outlet, means for hermetically sealing said cylinder, means for IOO placing the contents ofthe cylinder under hydraulic pressure, agitators disposed within the cylinder, operating means for the cylinder,

and agitators, separate driving connections between the cylinderand agitators and the operating means, and means for throwing either driving connections into or out of engagement with the operating means whereby both the cylinder and agitators may be axially rotated in unison or the one held stationary while the other is rotated. y

3. In an amalgamating-mach`ine, the combination of a cylinder having suitable trunnions, an inlet-pipe leading into the cylinder through one of said trunnions, an outlet-pipe leading from the cylinder through the other ofsaid trunnions, each of said pipes having the ends within the cylinder bent and adapted to be turned upward or downward within 'the cylinder, the outlet-pipe having an upturned U-shaped bend outside of said cylinder, a series of agitator-s within said cylinder, operating means for the cylinder and agitators, separate driving connections between the cylinder and agitators and the operating IIO means, and means for throwing either drivp,

ing connections into or out of engagement wlth the operating means. i

4. In an amalgamating-machine, the coml connecting the agitators to their operative bination of a cylinder having an axial inlet mechanism whereby thecylinder and agitaand an axial outlet, means for hermetically tors may be given axial rotation or held at sealing said cylinder, a series of` agitators rest the one independent 'of the other. l

5 mounted for rotation within said cylinder, In testimony whereof I affix my signature I5 means for rotating said cylinder, a clutch for in presence oftWo Witnesses.

i connecting and disconnecting the cylinder GEORGE BREYMANN. i with its operating means, independent mech- Witnesses:

1| anism for imparting axial rotation to said agi- F. M; DOTSON,

' 1o tators, and a clutch for connecting and disl L. E. BROWN.

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