US796553A

US796553A - Ore-jig.

Info

Publication number: US796553A
Application number: US20721604A
Authority: US
Inventors: Marcellus P Baugh
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-05-10
Filing date: 1904-05-10
Publication date: 1905-08-08
Anticipated expiration: 1922-08-08

Description

PATBNTED AUG. 8, 1905.

No. 796,558. M. P. BAUGH. ORE JIG.

APPLICATION FILED MAY 10, 1904.

4 sums-SHEET 1 W/am No. 796,553. X PATENTED AUG. 8, 1905.

M. P. BAUGH.

ORE JIG.

APPLICATION FILED MAY 10, 1904.

4 SHEETSSHEET 2.

6 mm MW w;

HTT-EJ 7*,

ANDREW a. cmum ca, PnuvoumocRAP-qins. wmuncmm n c.

No. 796,553.- PATENTED AUG. 8, 1905 M. P. BAUGH.

ORE JIG.

union-Ion rum) IAY 10, 1904,

4 SHEETS-SHEET 4.

bearings on the uprights or standards.

UNITED STATES PATENT orFIoE.

ORE-JIG.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed May 10, 1904. $erial No. 207,216.

To all w/wm/ it may concern;

Be it known that I, MARCELLUS P. BAUGH,

a citizen of the United States, residing at Pueblo, Colorado, have invented certain new and useful Improvements in Ore-Jigs,of which the following is a specification.

My invention relates to improvements in ore-jigs; and the object of the invention is to providea simple, eflicient, and economical device which may be used with a water-supply similar to ordinary jigs or may be used solely with air where there is a great scarcity of water.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a plan view; Fig. 2, a longitudinal vertical section on line 2 2 of Figs. 1 and 4, the view being taken looking toward the left in the latter figure. Fig. 3 is a side elevation. Fig. l is an end elevation. Fig. 5 is a detail view of a modification. Fig. 6 is a view'of further modification of plunger, and Fig. 7 is a vertical transverse section on line 7 7 of Fig. 3.

Referring by reference characters to these figures, it will be seen that the numerals 1 1, &c., designate uprights or standards suitably connected at top and bottom by

transverse beams

2, 2, and 2 and by one or more longitudinal beams 3 at the top, only one being shown arranged to one side of the center to serve as a guide for the plunger or operatingrods, as will hereinafter appear. Three vertically-disposed bars or side boards 4 4 4 extend the entire length of the frame approximately centrally of the height thereof, and to the bottom edges of the outer side boards or bars and the corresponding transverse bars or boards 5 5 are secured the upper edges of the hoppers 6 6, which are preferably of invertedpyramid shape, as shown.

For convenience of illustration I have shown two hoppers; but it'will be understood that this is merely representative of any desired number. I

Between the boards 4 and 4 are located the screens 7, which are situated below the upper edges, as shown, and the ore which has been previously sized is fed to the screen at one end from a suitable hopper, (indicated at 8.)

In order to move the ore gradually along over the screens during the jigging operation, an endless belt is provided passing over supporting and driving rollers 9 and 9, carried by

shafts

10 and 10, journaled in suitable The shaft 10 carries the step-pulley 11, connected by a belt 12 with corresponding pulley 13 on a shaft 14, journaled in bearings on the standards at the opposite end of the frame a jig. This shaft 14 derives its motion by means of bevel-

gears

15 and 16 from a shaft 17, which has fast and loose pulleys 18 and 19, by which it may be started and stopped, as desired. The belt is provided with a plurality of rakes 20, which operate to move the ore across the screens from the feed to the delivery end of the jig. If no supporting means were provided, the rakes would tend to dip too deeply into the ore near the center of each screen, owing to the sagging of the belt, and in order to prevent this I provide tracks or rails 21 on the inner faces of the sidebars on which the rollers 22 travel, these rollers being secured to the belt in any desired manner, but so as not to interfere with its passage around the rollers.

At this point it may be well to describe briefly the manner in which the separation of the ore is effected before going on to describe the construction of the fluid-forcing devices. It will be noticed that the screens are placed below the edges of the rakes, preferably about two and one-half or three inches below. On these screens is first placed broken ore to a depth of about an inch, the ore being just coarse enough so that it will not pass through the meshes of the screens. This is called bedding and is to prevent the line ore from passing too rapidly through the ore-screens. More finely broken oreis then placed thereon until the level of the edges of the rakes is reached, and the bed is then ready to receive the ore to be jigged. This is fed in at the feed-hopper and is conveyed along by the rakes over the ore-screens, the rakes being, as shown, slightly inclined backward, so as to allow the mineral to slip off and settle down through the ore and screens into the hopper. In order to effect the separation as the ore is thus .moved along by the rakes, means are provided by which fluid is forced up through the ore-screen intermittingly. Where water is plentiful, it is preferable that it be used; but it sometimes happens that a sufficient supply of water cannot be readily secured, either because of the desert nature of the region in which the machine is operated or because of temporary drouth. For this reason I have provided interchangeable means by which either air or water may be used as the separating medium, by the upward impulses,

threaded on the upper ends of the plunger ,with an adjustable collar 34 on the plunger.

rushes, or blasts of which through the ore the lighter ore particles or gangue or waste is i lifted up to be conveyed along by the rakes, while the heavier metallic particles settle down through the ore and sieve or screen into the hoppers.

In addition to making the fluid-forcing devices interchangeable to provide for using either water or air I find that it is desirable to provide two kinds of air-forcing devices, so that they may be changed according to the character of the ore operated upon.

One form of device which I use for securing the intermitting currents of air will now be described. To the upper edges of the side and cross boards above each hopper and at the side of each screen I removably secure a flexible diaphragm 23, which is preferably clamped in place by plates 24, held by nuts 25 and bolts 26. To the central portion of this diaphragmis secured the lower end of a plunger 27, it being clamped thereto by suitable nuts or collars 27. The upper end of the plunger passes upward through and is guided by the bar or beam 3. Nuts or collars 28 are and are designed to limit or vary the downward throw of the same, as will hereinafter appear. Wear or contact plates 29 are provided on the beam 8, and angle-plates 30 are located adjacent to the sides of the nuts and prevent the rotation thereof, while permitting the vertical movement of the plungers. Encircling each plunger below the beam 3 is a spring 31, which bears at one end against a collar 32 on the under side of the beam and at the other end against a collar or nut 33, adjustably carried by the plunger, whereby the tension of the spring may be varied. Each plunger is raised against the tension of its spring by a cam on the shaft 17 contacting I prefer to make the collar in the shape of a square nut threaded on the plunger and to make the cam doublethat is, of two members 35 35 lying one on each side of the plunger, as shown. Each cam has a plurality of step portions, as shown, and as the shaft rotates each plunger will be gradually raised until the nut slips off from one of the steps of the cam, when it will be impelled suddenly downward by the spring causing a rush of the air up through the orebed. It will be understood, of course, that the diaphragm has sufficient elasticity or flexibility to permit of a sufficient movement of the plunger to secure the desired effect. It will further be seen that by the adjustment of the several nuts or collars referred to the tension on the spring ofeach plunger may be varied and the throw of the plunger may be more or less limited, thus increasing or diminishing the quantity of air forced through the ore-bed or the force of the Air may be admitted to the interior of the chamber beneath the diaphragm on the upward stroke of each plunger by check-valves 36 in the diaphragm or corresponding valves 37 in the side board or wall, or by both.

In some instances where a considerable quantity or force of air is desired it may be desirable to use a reciprocating piston for the airforcing means. In this event I remove the flexible diaphragm and substitute for it a rigid plate 38, having a cylinder 39 in the center thereof, open at both ends, the lower end of the plunger carrying a piston 40, fitting in the cylinder and having one or more checkvalves in the body thereof, Then by the adjustment of the collars above referred to or by the use of a cam with higher steps a long stroke may be secured and a corresponding increase in the volume of air forced through the ore-bed.

Where the apparatus is to be used for water, I substitute for the valved piston a solid piston, and in this event the valve-plate 37 of the side board will be removed and an imperforate plate 37 substituted therefor or some suitable means provided for securing the check-valve to its seat, water of course being supplied in any suitable manner. .A convenient means for supplying water would be a pipe connected to the side of the compartment.

Having thus described my invention, what I claim is- 1. In an ore-jig, an ore-screen, a hopper beneath the same, fluid-forcing means cooperating with said hopper, a plunger connected to said fluid-forcing means and having its upper end guided in one of the frame members, a square collar threaded on said plunger above said frame member, a vertical plate bearing against said collar for preventing its rotation, and means for operating said plunger, sub stantially as described.

2. In an ore-jig, an ore-screen, a hopper beneath the same, fluid-forcing means cooperating with said hopper, a plunger-rod connected to said fluid-forcing means and having its upper portion threaded and guided in one of the frame members, a square nut threaded on the rod below the frame member, a double cam for contacting with said nut on each side of the rod, a second nut located above said firstnamed nut, a spring encircling the rod be- -tween said second nut and the frame member,

a third nut threaded on the rod above the frame member, and a vertically-disposed removable stop-plate bearing against the side of the said third nut whereby it is permitted to have vertical movement while it is held against rotation, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

MARCELLUS P. BAUGH.

\Vitnesses:

O. H. MoCLURG, B. M. HUGHES.