US794877A

US794877A - Conveying apparatus.

Info

Publication number: US794877A
Application number: US19183304A
Authority: US
Inventors: Alexander Mcdougall
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-02-03
Filing date: 1904-02-03
Publication date: 1905-07-18
Anticipated expiration: 1922-07-18

Description

No. 794,877. PATENTBD JULY 18, 1905.

A. MQDOUGALL.

CONVEYING APPARATUS. APPLIOATION FILED FEB. a, 1904.

PATBNTBD JULY 18, 1'905.v

A. MODOGALL. CONVEYING APPARATUS.

PPLITION FILED FEB. 3,1904.

3 SHEETS-SHEET 2.

nl? K, 1 n n 4 l Y l v 01 ...22H 1 PATENTED JULY18, 1905.

A. MGDOUGALL.

CONVEYING APPARATUS.

APPLICATION FILED 1113.3, 1904,

3 SHEETS-SHEET 3.

UNITED STATES Patented July 1s, 1905.

PATENT OFFICE.

CONVEYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 794,877, dated July 18, 1905,

' Application filed February 3, 1904. Serial No. 191,833.

To all whom it may concern.-

Beit known thatJ I, ALEXANDER McDou- GALL, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented new and useful `Improvements in Conveying Apparatus, of

which the following is a specification.

My invention, broadly considered, relates to improvements in conveying apparatus and in which ore having sand mixed therewith is conveyed toa mechanism, through which the ore is conveyed and separated from the sand and during which separation is subjected to a flow of water. The sand after being separated from the ore together with the water used in the separating process are deposited in a suitable reservoir from which the sand and water are removed to a distant point and the' sanddeposited upon a dump, the water drained from the dump into a suitable reservoir or equivalent receiver, and the water returned from this receiver to the reservoir to be used over again, whereby the water is repeatedly used for conveying purposes, all of which will be fully described hereinafter.

In the accompanying' drawings, Figure l is a vertical sectional view of an apparatus embodying my invention. Fig. 2 is a transverse sectional View on the-line 2 2 of Fig. 1, showing more clearly the ore-chutes and a car or cars adapted to receive the cleansed and separated ore. Fig. 3 is a perspective view showing the general arrangement of the different parts of my apparatus.

My apparatus is here shown in conjunction with any suitable form of conveyer, by means of which the ore is conveyed from the mine into my improved conveying and separating apparatus.

Referring now particularly to the drawings, 1 indicatesa mine shaft or opening,from which passes any suitable form of conveyer. As here shown the convcyer 2 is of the skipper form, and, as illustrated in Fig. 2, one of the shippers 3 is dumping its load into the hopper 4 at the, upper end of the separating mechanism of my apparatus. The hopper 4 is provided with an inclined bottom 5, and this inclined bottom 5 is provided with a plurality of` riflies 6, preferably in the form of railroad-rails, though other forms may be provided. Located at a point in a plane below the hopper 4 is a suitable screen 7, and a spout 8 establishes communication between the lower portion' of the hopper 4 and the inlet end of the screen 7. The screen 7 is placed at a suitable angle, as shown, and a stream of water is supplied to the hopper 4 through the medium of a suitable pump 9 and a pipe 10, having its outlet end leading into the hopper 4. From the foregoing it will be observed that the ore as it is received from the minewith sand mixed therewith is subjected to a stream of water as it is falling into the hopper 4, and this stream of water vigorouslyagitates the ore, which materially assists in the separation of the sand therefrom, and when the ore and the sand strike the bottom of the hopper the iiow thereof and also the How of the water is retarded bythe riiiies 6, which also materially assists in the separating operation. When desired, there may be several of these separating-screens, and as here shown there are three, and they are located in vertical alinement and constitute the separating mechanism of my conveying apparatus. The several screens 7 have relatively graded sized openings, the large openings being in the upper screen, relatively smaller openings in the intermediate screen, and still smaller openings in the lower screen, whereby the larger pieces of ore-roll out of the upper screen 7 and the finer/v pieces, together with the sand and water, fall therethrough into a suitable sluice l1 and pass through the spout 8 therebelow into the intermediate screen, and the particles of ore too large to pass through the openings or mesh of the intermediate screen 7, together with the sand and the water, fall therethrough into the similar sluice `1l therebelow and into the lower screen 7. The linal or lower screen 7 has its openings of such a size as to separate nearly all ofthe ore from the sand; but the Very fine particles will fall therethrough into a similar sluice 11, located therebelow, and this mixture of iine ore, sand, and water is conveyed from the lower sluice l1 to a spout 12 into an' overflow-hopper 14. The ore l5, which is rolling from the several screens 7, falls'onto suitable chutes 16 and is conveyed by these chutes to cars 17 or to any suitable point. If the ore is to be collected in its graded condition,the several chutes will convey it into separate cars, as illustrated, or to separate receivers.

Located below the overflow-hopper is a suitable reservoir 18, into which the overflowing sand and water fall. The heavier particles of ore 19 will settle at the bottom of this overflow-hopper 111 and can be removed therefrom periodically through the medium of a suitable valve-outlet 20.

As here shown the pump 9 obtains its water-supply from the reservoir 18 through a pipe 21, whereby the water for separating the sand from the ore is repeatedly used, and the reservoir 18 may be replenished with water from the mine or other source, should it become necessary to do so.

As illustrated, the sand will settle at the bottom of the reservoir 18 and is removed therefrom through the medium of a suitable pump 22 and conveyed through the pipe 23 to a distant sand-dump 24:. Located adjacent the sand-dump 24 is a suitable receiver 25, which may consist of low land or a cavity, as here illustrated, and the water drains from the sand-dump 24 into the receiver 25. By means of a pump 26 the water is conveyed from the receiver 25 through the

pipes

27 and 28 back to the reservoir 18 to be again used through the mediuml of the pump 9 for separating the sand from the ore.

From the foregoing description it Will be observed that my conveying apparatus provides means for removing sand and water to a distant point, collecting the water and returning it to the point at which the sand is deposited to be again used for the purpose of conveying the sand there deposited to a distant dump, and it includes means for conveying sand and Water to a point in the form of a reservoir to be removed therefrom to a dump, the water drained from the dump and collected and returned to the sand and water collecting reservoir.

As here shown the screens 7 are of the stationary form; but it will be readily understood that they may be of any, other desired form. The several forms being so well known in the art, it is deemed suficient for the purpose of illustrating my invention to show the stationary form of screen.

I prefer to use a centrifugal form of pump, (as here illustrated,) though it will be readily understood that other suitable forms of pumps may be utilized Without Adeparting from the scope and spirit of my invention.

My apparatus is adapted for use in Washing ore, phosphate-rock, or other substances, depositing the refusie matter and Water into a reservoir and removing the refuse, draining the water from the dump and collecting it,

and returning it again to the reservoir,.there by using it repeatedly for conveying purposes.

In carrying out my invention any suitable form of conveyer may be used to convey the ore to the separator, and the separator may consist of one or more screens, according to the requirements of the particular kind of ore being handled.

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

1. In a conveying apparatus, the combination ofa reservoir, separate liquid and substance supply to said reservoir, a conveyer for conveying the combined liquid and substance to a point distant from said supply, a receiver adapted to receive the water from the deposited substance, and a conveyer conveying the water from the said receiver back to the reservoir, whereby the same water is repeatedly used for the conveying purposes.

-2. In a conveying apparatus,'the combination of a settling-reservoir, separate water and sand supplies to said reservoir, whereby the sand will settle to the bottom of the reservoir, a conveyer extending to the bottom of the reservoir to engage the sand, and adapted to convey the Water and sand to a distant dumping point, a receiver located adjacent the dumping point and adapted to collect the water therefrom, and a water-conveyer for conveying the waterfrom the said receiver back to the reservoir, whereby the same water is repeatedly used for conveying purposes.

3. A conveying apparatus, including a reservoir, a material-supply independent of the reservoir, a water-conveyer connected to the reservoir and subjecting the mineral to aseparate supply of water as it is fed to the reservoir, to separate the san-d therefrom, a conveyer adapted to convey the sand and water of the reservoir to a distant dump, a receiver adapted to collect the Water from the said dump, and aconveyer for conveying the water from the receiver back to the reservoir.

4. Aconveying apparatus including an oreseparator, means for conveying. the ore to the inlet end of the separator, a water-supply to the inlet end of the separator, a reservoir adapted to receive the Water and the separated material from the said separator, a conveyer connected with said reservoir and adapted to y convey the separated material and the water to a distant dump, a receiver adapted to collect the water from said dump, and a conveyer for conveying the water from the said receiver back to the reservoir.

5. A. conveyer including an ore-separator, a conveyer adapted to convey the ore to the inlet end of the separator, a water-supply to the inlet end of the separator, an overflow-hopper adapted to receive the water and separated material from the separator, a reservoir adapted to receive the separated material and the IOO IIO

Water from the outlet of the separator, a conveyer adapted to convey the Water and separated material to adistant dumping-point, a receiver adapted to collect the Water from the dumping-point, and a conveyer conveying the Water from the receiver to the reservoir.

In testimony whereof I have hereunto set my hand in the presence of two subscribing I Witnesses.

ALEXANDER MCDOUGALL.

Witnesses S. GEO. STEvENs, DONALD MCLENNAN.