US1015823A - Concentrating-table. - Google Patents

Description

W. L. MUBNDER.

GONOENTRATING TABLE.

APPLIOATIOH FILED JAN. 7, 1911.

1,015,823. Patented Jan. 30, 1912.

2 SHEETS-SHEET 1.

Attorneys W. L. MUENDBR.

GDNGENTBA'I'ING TABLE.

APPLICATION FILED JAN.7, 1911.

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[I Inventor" s V. e n r O t t A UNITED STATES PATENT OFFICE.

WILLIAM L. MUENDER, OF MONTFORD, WISCONSIN.

CONCENTRATING-TABLE.

To all whom it may concern:

Be it known that I, \ViLmAM L. MUEN- mm, a citizen of the United States, residing at Montford, in the county of Grant and State of \Visconsin, have invented a new and useful Concentrating-Table, of which the following is a specification.

It is the object of this invention to provide a dry concentrating mechanism, whereby the ore will be separated into different masses of different specific gravities, at successive steps in the operation, the gangue being maintained apart from the ore, by an air blast, until the ore has been completely separated, into masses of different specific gravities.

Another object of the invention is to provide a novel form of riddle, so constructed that, when the same is operated in conjunction with an air blast, and a reciprocating casing, the gangue and the ore will be maintained separate and apart, to be deposited individually in different localities.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings-Figure 1 is a view of the invention in side elevation; Fig. 2 is a vertical longitudinal section; Fig. 3 is a top plan; Fig. 4 is a transverse section on the line A-B-of Fig. 3; Fig. 5 is a perspective, showing a portion of the lower face of one of the riddles; Fig. 6 is a fragmental top plan of the easing; and Fig. is a fragmental transverse section, the view showing the manner in which the gate cooperates with other portions of the structure.

Referring particularly to the drawings, and noting Fig. 1, that end of the device to which the numeral A is applied, will be considered as the forward end of the machine, that portion of the structure to which the letter B is applied, being considered as the rear end of the machine.

Specification of Letters Patent.

Application filed January 7, 1911.

Patented Jan. 30,1912.

Serial No. 601,418.

In carrying out the invention, there is provided as a primary and fundamental element, a box-like casing 1, closed at the bottom, and equipped with suitable bearings 2, to which the upper extremities of rock arms 3 are pivoted, the rock arms be ing pivotally mounted at their lower ends in pillow blocks 4, resting upon a suitable support 5.

To the forward end of the casing 1, a pitman 6 is operatively connected, the pit man carrying at its forward end, a strap 7, embracing an eccentric 8, adjustably held upon a shaft 9, mounted for rotation in bearings 10, supported by a suitable foundation 11, the shaft- 9 being equipped with a pulley 12, which may be taken as typical of any suitable means whereby rotation may be imparted to the shaft 9.

Through the bottom 14 of the casing 1, an air blast pipe 15 extends, a deflector 16 being positioned above the discharge end of the pipe 15, within the casing 1.

As denoted by the numeral 17, and as seen most clearly in Fig. l, the upper edge of the casing 1 slants downwardly from the forward end of the casing toward the rear end of the casing, so that when the ore is deposited upon riddles, supported upon the upper edge of the casing .l the ore will move gravitationally from the forward end of the casing toward the rear end thereof when a reciprocating motion is imparted to the casing 1, through the rotation of the shaft 9, the eccentric 8 and the pitman G obviously imparting a reciprocation to the casing, when the shaft 9 is rotated, as will be clearly understood, the casing 1, of course, tilting upon the rock arms 3.

At spaced points, the side walls of the casing are united by cross bars 18, longitudinal bars 19, disposed midway between the'side walls of the casing, serving to unite one cross bar 18 with the next cross bar, the longitudinal bars 19 uniting the terminal cross bars 18 with the end walls of the casing 1. Located between the longitudinal bars 19 and the side walls of the casing 1, are gratings-20 the lon itudinal bars 19 being depressed below t e upper edges of the side walls of the casing 1, and the gratings 2O sloping downwardly toward the longitudh nal center of the casing, as an examination of Fig. 4 will render clear.

A mesh work fabric 21 is extended over the top of the casing 1, the fabric covering 21 being depressed along the longitudinal center of the casing I, by means of securing strips 22, superposed upon the covering, and united with the longitudinal bars 19.

The invention further includes a plurality of riddles, disposed longitudinally of the casing 1, in downwardly inclined relation, each riddle discharging into the next adjoining one, from the forward end of the. casing toward the rear end thereof. Each riddle comprises a head board 23, a tail board 24, and side walls 25, the tail board 24' of one riddle being disposed in close proximity to the head board 23 of the next adjoining riddle. In the intermediate portion of each tail board 24 there is, as Fig. 5 will render evidence, a depending lug 26, adapted to register in, but not to close entirely, an openin 27 (see Fig. 6) in the fabric covering 21, he opening 27 being located adjacent the longitudinal center of the casing 1 and in the line of greatest depression of the covering 21. The several riddles are held upon the casing 1 by means of bolts 29, or other securing elements, extending through mating ears 28 upon the side walls 25 of the riddles, and upon the side walls of the easing 1. The riddles are equipped with division plates 30, adapted to rest upon the securing strips 22, t e division plates 30, in their lower edges, being depressed below the lower edges of the side walls 25 of'the riddles. From the division plates 30, ore ritfles 31 extend laterally towardthe side walls 25 of the riddles, and upon the ore riflles 31,

angue skimmers 32 are superposed, the grhnmers' 32 crossing the riflies 31. The riflies 31 and the Skimmers 32 both slant downwardly from the side walls 25 of the riddles, toward the division plates 30, and in the lower edges of the riflies 31, adjacent the division lattes 30, there are notches 33, having funo ions which will be described hereinafter. The gangue'slr'iminers 32 discharge over the tail cards 24 of the riddles, the riflles 31 discharging against the side tacos of the tail boards, as an examination of Fig. 3 virill render evident, the skiihrners 32 converging toward thefforward end of the cas ing 1, while the fifties 31 converge toward the rear end or the casing.

Supported upon each tail board 2;, is a bracket 34, in which is'inounted a vertically moving gate 35, ada ted to effect a closure of the opening 27, t ese openings 27 communicating with laterally extended chutes 36,' rolonged, as seen in Fig. 1, through one of t e side walls of the casing 1.

At the forward end of the casing 1 any suitable delivery mechanism, indicated conventionally at 37, may be positioned, while to the rear end of the casing 1, the gangue spout 38 is secured.

The operation of the device is as follows: The ore is delivered into the forward end of the structure. through the ((JIIYOHllOIlttllY shown mechanism 37. the ore being deposited upon the uppermost riddle. lteciproeation being imparted to the casing 1, through the instrumentality of the pitman (j, in the manner hereinbefore described, the heavier material will work downwardly between tbc rillles 31 and the shimmers 30, to rest upon the fabric covering 21. By rcason of the fact. that the riddles slope down wardly toward the longitudinal center of the machine, the heavier material following the. rillles 31. will move toward the division plates 30, the notches 33 in the lower edges of the rilllcs, permitting the heavier material to move longitudinally of the casing 1, and to come into abutment, ultimately, with the tail board 24 of the uppermost riddle. By opening the gate 35, in the uppermost riddle, the heavier material may be permitted to flow away through the first discharge tube 36. During the foregoing operation, a blast of air will have been supplied to the interior of the casing 1, below the covering 21, through the instrumentality of the air blast pipe 15. This air blast, delivered be neath the covering 21, will serve to elevate the gangue above the heavier ore, the gangue following the shimmers 32, to be dischar ed, along with the lighter ore, over the tail lioard 24 of the first riddle, and over the head board 23 of the next riddle, into the last named riddle.

The operation above described in connection with the first, uppermost riddle, will take place upon the intermediate riddle, and upon the last riddle, successive masses of ore being drawn away through the discharge spouts 38, the gangue, at last, passing over'thc tail board 24 of the last, lowermost riddle, and entering the gangue spout 38.

From the foregoing it will be seen that the heaviest material will be segregated by the first discharge chute 36, a mass of material of sli htly less specific gravity being delivered y the next chute 3G, a third niass of material of still less specific gravity being delivered by the last chute 36, the gangile ulti'ma'tely passing out'of the rear end oi'the easing, into the spout 38. The reciprocation of the casing 1 will serve to separate the ore, according to its speci c gravity, the air blast, delivered through t e ip'e 15, serving to carry the g'angue upwar ly, so that the shimmers 32 may pass the gangue from one riddle to another, and finally deposit the aiigue in the gala u'e spout 38, the gangue being held apart rom the ore, durin the time that the ore is being segre ate and withdrawn through the chutes 38, y the reciprocation of the casing 1.

It will of course be understood, without specific delineation, that the casing 1 may be of any length, and that any number of riddles may be employed thereon.

Having thus described the invention, what is claimed is:

1. In a device of the class described, a casing; a mesh work covering thereon; a riddle upon the casing above the covering, the riddle comprising intersecting ore riflies and gangue skimmers, the skimmer-s being superposed upon the rifiles, the riflles and the skimmers slanting downwardly toward the longitudinal center of the casing, there being openings in the lower edges of the riiiles, adjacent the longitudinal center of the casing, to permit the ore to move longitudinally of the casing; means for imparting a longitudinal reciprocation to the easing; and means for supplying fluid under pressure beneath the mesh work covering.

2. In a device of the class described, a casing; a mesh-work covering thereon; a riddle carried by the casing, above the covering, the riddle comprising a tail-board and intersectin ore riflles and gangue skimmers, the riflles discharging against the tailboard, and the skimmers being extended across the tail-board, the rifiles and the shimmers slanting downwardly toward the longitudinal center of the table; there being openings in the lower edges of the riflies, adjacent the longitudinal center only of the casing; a movable gate carried by the easing adjacent the discharge end 0 the tailboard and adapted to receive the material from the riflies, the gate being extended but part way across the casing, and being located adjacent the longitudinal center of the casing; the covering being provided with an opening for which the gate constitutes a closure; means for imparting a longitudinal reciprocation to the casing; and means for supplying an air blast beneath the covering.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two Witnesses.

WILLIAM L. MUENDER.

J. C. MASON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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