US433714A

US433714A - Ore-sampler

Info

Publication number: US433714A
Authority: US
Publication date: 1890-08-05
Anticipated expiration: 1907-08-05

Description

(No Model.)

H. L. BRIDGMAN. ORE SAMPLER Patented Aug. 5, 1890.

UNTTED STATES PATENT OE FICE.

HENRY L. BRIDGMAN, OF BLUE ISLAND, ILLINOIS.

ORE-SAMPLER.

SPECIFICATION forming part of LettersPatent No. 433,714, dated August 5, 1890. Application filed December 24. 1889. Serial No. 334,831. (No model.)

To ail whom it may concern.-

Be it known that I, HENRY L. BRIDGMAN, a citizen of the United States, residing at Blue Island, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Ore-Samplers,of which the following is a specification.

My invention relates to an improvement in the class of machines employed in ore-reduction works for the purpose of obtaining from a mass of ore a sample which, on being reduced, may operate as a basis on which to determine the value of the mass. A sample to be correct of course must contain the same relative quantities of the constituents of the mass as are contain ed in the mass itself. The various methods hitherto employed, so far as I am aware, for obtaining such samples have been laborious and expensive, and attended with results generally more or less unreliable.

The object of my invention is to provide a machine of improved construction for automaticallv sampling ore, which shall be quick and thoroughly reliable in its operation, and be of simple, durable, and economical construction.

The drawing shows my improved ore-sampler in elevation, partly sectional, and for the purposes of illustration the upper portion is shown raised from its operative position, as hereinafter more clearly described.

A is the base of the machine, having the socket-bearing t for a vertical rotary shaft B and standards A and A The standard A is of the shape of an inverted L, as shown, and affords toward its horizontal end a bear ing 75 for the shaft B, operating to steady the latter and maintain it in a vertical position. Upon the standard A, and rigidly secured thereto to surround the shaft B, is a receptacle 0, divided into concentric troughs s s 5 preferably three in number. Surrounding the shaft B, above the receptacle 0 and held thereon against independent rotation by a key as, is a support D, which when in operative position rests with the lower face of its central portion or hub 0 upon a shoulder q, formed by a reduction at that part of the diameter of the shaft B. The support D carries an annular trough D, which should be located directly over the central annular trough s of the part C. In the base of the trough D is a series of openingsp, and coinciding with each opening is a downward-flaring opening p, through the support D. Each opening p is provided with an oblique spout 0, having a flange 0, which is countersunk in the upper face of the support D and loosely supported in the bearing thus afforded, wherebythe spout may be turned to extend obliquely in different directions and be directed into any one of the annular troughs of the receptacle 0, which are provided, respectively, with spouts or chutes n, placed at convenient distances.

from each other.

In operation the device may be located in the mill on the floor below that which sustains the crusher or pulverizer, sothat the ore after being crushed or pulverized may.

discharge into ahopperZ, which is below the disintegrating machinery and d1rectly over the annular trough'D. The spouts o, of.

which an ydesired number maybe providedsay tenmay be adjusted to cause one to project over one trough of the receptacle 0, another, preferably on the opposite side of the support D, to project over a second trough, and the remaining eight spouts to project over the third trough. The shaft B is connected through intermediate gearing y with a pulley y, which may be belted to a drivepulley or turned by means of the handle g As the ore to be sampled descends through the hopper Z, the shaft B and support D are caused to rotate rapidly, so that the ore is evenly distributed throughout the trough D and flows through the spouts 0, which, being adjusted as described, cause one-tenth of the mass of ore to enter each of two troughs of the part 0, and the remaining eight-tenths the third trough thereof. The support D carries on its under side a rigid scraper E, preferably in one piece, divided into three blades m m m which are shaped, as shown, to conform to the three troughs of the receptacle 0 and fit into them snugly, but loosely, when the support D is lowered into operative position. The blades in their rotation scrapethe contents of the respective troughs to their chutes at, under each of which maybe placed a suitable receptacle. The rapid rotation of the trough D causes such extensive distribution of the ore descending from the hopper Z that no appreciable difference is liable to occur between the constituent parts of the ore discharged by one spout 0 and that discharged by any of the others. Therefore, if the two one-tenth parts, separated, as described, from the balance of the ore and taken from opposite sides of the trough D, are found to agree in value there can be no reasonable doubt as to the correctness of the samples.

After one lot of ore has been sampled and before using the device to sample another lot, it is desirable to clean out the troughs of the receptacle O, and this may be the more readily' accomplished when the support D is raised to the position shown in the drawing and held in place by the set-screw Z. I

Of courseif the samples obtained in the first operation are larger than desired, they may be sampled in turn bybeing run through the machine again.

It will be readily seen that. the operation of sampling may be carried out in a number of different Ways by means of my device-as, for instance, by directing but one spout into one trough, two or three, &c., into another, and the balance into the third, and repeating the operation with any two of the samples thus obtained.

Myimproved device Would still be very valuable as an ore-sampler if the receptacle 0 were provided with only two' instead of three annular troughs. Three, however, the preferred number, and more could be employed if desired.

. My apparatus may, furthermore, be variously modified as to details without thereby departing from my improvement; hence I do not wish to be understood as limiting m yself to such details of construction.

WVhat I claim as new, and desire to secure by Letters Patent, is-

1. In an ore-sampler, the combination of two or more stationary concentric receptacles, and a rotary support above the said receptacles carrying an annular receptacle provided with a series of outlets leading to the concentric receptacles, whereby ore introduced into the upper rotating receptacle may be directed into the two or more lower receptacles, substantially as and for the purpose set forth.

2. In an ore-sampler, the combination of two or more stationary concentric receptacles, and a rotary support above the said receptacles carrying an annular receptacle having a series of openings provided with adjustable spouts whereby ore introduced into the upper rotating receptacle may be directed in desired proportions to the respective lower receptacles, substantially as and for the purpose set forth.

3. In an ore-sampler, the combination of two or more stationary concentric receptacles provided with outlets n, a rotary support above the said receptacles carrying an annular receptacle having a series of openings provided with adjustable spouts 0, and a scraper E, connected with the rotating support and extending into the concentric receptacles,whereby ore introduced into the upper rotating receptacle may be directed in desired proportions to the respective lower receptacles and swept to the outlets at, substantially as and for the purposes set forth.

HENRY L. BRIDGMAN.

In presence of J. W. DYRENFORTH, A. R. WALLACE.