US1166078A

US1166078A - Coal-jig.

Info

Publication number: US1166078A
Application number: US2262615A
Authority: US
Inventors: George Edmond Reynolds
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-04-20
Filing date: 1915-04-20
Publication date: 1915-12-28
Anticipated expiration: 1932-12-28

Description

G. E. REYNOLDS.

COAL JIG.

APPLICATION FlLED APR.20, 1915 LWQWS. Patented Dec. 28, 1915.

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jZ if Witnesses G. E. REYNOLDS;

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APPLICATION FILED APR. 20, 19'5- I 1 16 7.. Patented Dec. 28, 1915.

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GEORGE EDMOND REYNOLDS, OF WYOMING, PENNSYLVANIA, ASSIGNOR OF ONE-THIRD T0 WILLIAM H. BROWN, 0]? WYOMING, PENNSYLVANIA, AND ONE-THIRD TO FRANK NOWAK, OF EXE'IER, PENNSYLVANIA.

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Specification of Letters Patent.

Application filed April 20, 1915. Serial No. 22,626.

To all whom it may concern."

Be it known that I, GEORGE E. REYNOLDS, a citizen of the United States, residing at Wyoming, in the county of Luzerne and State of Pennsylvania, have invented a new and useful Coal-Jig, of which the following is a specification.

The present invention appertains to coal jigs, such as are employed for washing coal and separating the same from rock and slate by gravity, one of the objects of the invention being the provision in a coal jig, of a novel and improved screen or grate to enhance the eflic'iency and capacity of the jig in separating the coal from the rock and slate.

Another object of the invention is the provision of means for automatically discharging the refuse, such as rock and slate, when suflicient rock and slate has accumulated at the refuse outlet, and which will eliminate the necessity for an attendant manually opening the refuse gate as is now the custom, and which will also increase the efficiency of the jig by preventing the excessive accumulation of rock and slate therein.

It is also within the scope of the invention to provide the improved features above noted which can be readily embodied in present day coal jigs, without prohibitive expense and trouble, and whereby the utility and efficiency of the jig will be materially increased.

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.

The invention is illustrated in the accompanying drawings, wherein Figure 1 is a vertical section of a coal jig embodying the improvements, portions be ing broken away. Figs. 2 and 8 are sectional views taken on the lines 22 and 8-3, respectively, of Fig. 1. 4

in the drawings. there is illustrated a ig which is known in the trade as a Reading jig, having the improved features embodied therein. he jig comprises a tank 1 having a partition 2 therein, and a plunger 3 operating at one side of the partition 2 for forcing the water upwardly and downwardly through the screen or grate 4 between the partition 2 and side wall of the tank opposite the plunger.

The screen or grate 4 is of special con struction, to facilitate the separation of the coal from the slate and rock, and to increase the capacity of the jig. Thus. the screen 4 comprises a lower inclined step 5 having the lower perforated portion (3 and the upper perforated portion 7. The screen at embodies a second or upper step 8 which is perforated, and which is arranged at a slightly less angle of inclination than the lower step A perforated or apertured riser 9 is disposed between the adjacent edges of the steps 5 and 8, and a plate 10 is secured to the partition and to the adjacent edge of the step 8. The step 8 is arranged adjacent but spaced from the partition 2, while the lower step 5 is attached to that side wall of the tank remote from the partition 2. The steps 5 and S, riser 9,

and plate 10 are suitably secured to the walls of thetank. The plate 10 is provided between its edges with an obtuse angled bend l1 and with perforations 12 below the bend, a wear strip 13 being secured upon the plate 10 above the angle for preventing the coal, rock and slate from wearing or inj uring the plate 10 when the same drops into the jig.

A partition or deflector 14 is secured within the tank 1 adjacent the partition '2 above the. step 8, the lower edge of the partition or deflector 14 being spaced above the step 8 and being arranged comparatively close to the said step and plate 10. The chute 15 which discharges the coal as it comes from the mine extends over the partition 2 to discharge the coal into the hopper or space be tween the

partitions

2 and 14, and whereby the coal will flow under the partition 1% onto the step 8 of the screen or grate.

That side wall of the tank 1 adjacent the lower edge of the step 5 is provided with :1

discharge opening 15 for the rock and slate immediately above the lower edge of the screen 4 or the step 5 thereof, and the usual conveyer trough 16 has its lower end conmeenre' nected to the tank to communicate with the outlet opening 15, a suitable rock and slate conveyor 17 working within the trough 16 to carry the rock and slate upwardly. The respective side wall of the tank is provided above the outlet opening 15 with a coal outlet opening 18, and a coal trough 19 is attached. to the tank to communicate with theopening 18, a suitable conveyer 20 working within the trough 19 and extending partially into the tank above the screen and refuse outlet opening.

The means for enabling the rock and slate to be automatically discharged, includes a wing gate 21 hinged, as at 22, to the respective wall of the tank at the upper edge of the refuse outlet 15, and a wing 23 is hinged, as at 24:, to the respective wall of the tanli: above the opening 15 and gate 21. The wing 23 is relatively larger than the gate 21, and is arranged. to swing into the step 5 of the screen over the perforated portion 6 thereof for acting as a secondary gate. The gate 2i. is operatively connected to the wing 23, and to this end a stem 25 is engaged throu h the tree portion of the wing 23 and is adjustably engaged thereto means of a pair of nuts 26 threaded upon the stem 25 and clamping the wing, a link 27 being terminally pivoted to the gate 21 and stem 25 so that the gate and wing swing simultaneously. ll hen the gate 21 is closed so as to depend within the outlet opening 15, the wing 23 is swung upwardly up oil of the step 5 so that the lower or free edge of the wing 23 is spaced above the median line between the perforated portions 6 and 7 of the step 5.

A means is employed for normally holding the wing 23 raised and the gate 21 closed, and to this end a rod 28 having its lower end secured to the wing 23, has its upper end connected by means of a link 29 to one end of a lever 30 fulcrumed to a hanger or other suitable support 31, a weight 32 being adjustable upon the other arm of the lever 30. The weight 32 in swinging the respective arm of the lever 36 downwardly will raise the link 29 and bar 28 to raise the wing 23 and swing the gate 21 inwardly to closed position, and the weight 32 will overbalance the rock and slate which. gravitates down the step 5 below the wing 23 and bears against the gate 21, until suflicient rock and slate has gravitated below the wing 23 to force the gate 21 open.

In operation, the tank 1 is partially filled with water in. the usual manner, and the plunger 3 is reciprocated vertically tor forcing the water upwardly and downwardly through the screen or grate -1- for washing the coal, and serving to work the coal, which has a. lower specific gravity than the rock and slate, to the top. The coal which is discharged from the chute 15 will drop onto the wear strip 13 and will be deflected thereby over the apertured portion or riser 12 of the plate 10 onto the perforated or apertured step 8. The coal and refuse will gravitate along the step 8, and when it reaches the riser or offset 9, the coal and refuse will drop over the riser or ollset, and which in connection with the action of the will enable the coal to be worked upwardly in a much easier and better manner than with the use of an ordinary straight inclined screen or grate. The coal is worked upwardly over the wing 23 and is taken up by the conveyer or elevator 20, while the rock and slate which settle by gravity under the win 23 will accumulate below the wing will bear against the gate 21. l fhen sufiicient rock and slate has accumulated below the wing 23 to force the gate 21 open, assisted by the pressure of the coal upon the wing 23, to over-balance the weight 32, the gate 21 will be forced open to allow the slate and roclr to run into the trough 16 to be carried upwardly by the conveyor or elevator 17. When the gate 21 is opened, the wing 23 will be swung downwardly against the perforated portion 6 of the step .5, for preventing coal and refuse from passing underthe wing until the parts have again resumed their normal positions. when the rock and slate are discharged from under the wing 23 through the refuse outlet opening 15', the weight or pressure upon the gate being relieved, will allow the wing and gate to swing back to normal positions under the influence of the weight 32. The wing and gate are thus yieldably held in normal position, and the gate is arranged to be automatically opened by the rock and slate, and this will eliminate the necessity of the attendant manually opening the refuse gate as is ordinarily the custom, and which requires considerable time in observing and operating the refuse gates of ordinary jigs;

lt will be noted that the screen or gate instead of lying in a single plane as ordinarily, is stepped or offset opposite the refuse outlet opening, and at a suitable distance in advance oi the wing 23, whereby the coal and refuse will be separated properly before reaching the free edge of the wing 23. The construction of the screen or grate 4 will materially increase the'eiliciency and capacity of the jig. A salient feature of the invention resides in the means whereby the rock and slate is automatically discharged, and this means-operating to discharge the rock and slate free from coal, and whereby the jig will operate to separate the refuse from the coal sufficiently to paw inspection at" or below the percentage allowed. In the present structure, the coal, rock and slate in entering the jig will fall onto the upper strip 8 at a hi her jigging level than in ordinary jigs, an whereby a ldll mes es larger fall of the coal and refuse is obtained before reaching the outlets or exits, enabling the coal to be separated from, the slate and rock more readily and with less jigging than in ordinary jigs. Since the refuse discharge means operates automatically, to close the refuse gate as soon as the rock and slate is discharged, the accidental discharge of coal into the refuse trough is prevented, this frequently happening in ordinary jigs, since the attendant must use his judgment as to how long to open the refuse gate, and this not infrequently results in the refuse gate being held open too long so as to allow coal to be discharged into the refuse trough.

From the foregoing, taken in connection with the drawings, it is believed that the other advantages and attributes of the present invention will be obvious to those skilled in the art,

Having thus described the invention,what is claimed as new is:

1. In a jig, a tank, an inclined screen therein, one wall of the tank having a refuse outlet at the lower portion of the screen, a

normally closed gate for said opening, a

wing hinged to said wall above said gate and arranged to swing toward the screen, and means for normally holding the gate closed and the wing raised and adapted to yield for allowing the gate to open and the wing to swing downwardly toward the screen. i

2. In a jig, a tank, an inclined screen therein, one wall of the tank having a refuse outlet at the lower portion of the screen, a normally closed gate for said opening, a wing hinged to said wall above said gate and arranged to swing toward the screen, means connecting the gate and wing, and yieldable means connectedto the wing for normally holding the same raised and the gate closed. I

3. In a jig, a tank, an inclined screen therein, one wall of the tank having a refuse outlet at the lower portion of the screen, a gate hinged to said wall to depend within the outlet for normally closing the same, a wing hinged'to said wall above said gate and adapted to swing downwardly onto the screen, a link connecting the gate and wing, and yieldable means for normally raising the wing off of the screen and swinging the gate closed.

4. In a jig, a tank, an inclined screen therein, one wall of the tank having a refuse outlet at the lower portion of the screen, a gate for normally closing said outlet, a wing hinged to said wall above the gate and adapted to swing downwardly onto the screen, and means operatively connecting the gate and wing whereby when the gate is opened, the wing is swung downwardly against the screen.

5. In a jig, a tank, an inclined screen therein, one wall of the tank having a refuse outlet at the lower portion of the screen, a gate hinged to said wall to depend within said outlet for normally closing the same, a Wing hinged to said wall above said gate and adapted to swing downwardly onto the screen, and a link connecting the gate and wing, the wing being raised when the gate is closed, and swinging downwardly onto the screen when the gate is swung open In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

Gnonen W, TURNER, Gnonen T, Bnow'n.