US1324588A

US1324588A - Sylvania

Info

Publication number: US1324588A
Authority: US
Publication date: 1919-12-09
Anticipated expiration: 1936-12-09

Description

R. FODERARO AND G. W. WILMOT.

DISCHARGE CONTROLLING MEANS FOR 1168.

APPLICATION FILED MAR. 18, IBM). RENEWED OCT. 17.1919. 1,324,588. Patented Dee; 9,1919.

2 SHEETS-SHEET I.

Wit macs RALPH FODERARO, or nRcHBALn,

AND GEORGE w. winivro'nor nAzLn'roiI, PENN;

SYLVANIA. I

DISCHARGE-CONTROLLING MEANS non nos.

Specification of Letters Patent.

Patented Dec. 9, 1919.

Application filed March is, 1916, Serial No. 84,999. Renewed lum r 17,1919. Serial No. 331,492.

- citizen of the United States, and a resident of Archbald, county of Lackawanna, State of Pennsylvania, and GEORGE W. WILMOT, a

citizen of the United States, and a resident of Hazleton, county of Luzerne, State of and usefill Improvements inDischarge-Controlling Means for Jigs, of which the following is a specification.

While our invention may be used to advantage for washing and separating ores in general from stone and other matter which it is desired to eliminate, it'is particularly eiiicient when used for washing coal and se arating the slate and stony particles therefrom.

One object of our invention is to provide means whereby a layer of slate is maintained at all times upon the controlling discharge gate to thereby. prevent the slate from passing out too freely and also to prevent wastage by reason of the passage of particles of coal through the opening intended for the discharge only of slate and other material,

such as stone, which it is desired to eliminate and remove.

A further object of our invention is to provide an improved construction of means for controlling the position of the discharge gate with respect to the lower edge of the upright plate over the upper edge of which the coal or corresponding lighter particles of ore or other material is discharged.

Other objects and advantages of our in- 'vention will be referred to and pointed out in the detailed description of our invention which follows or will be apparent from such description.

In order that our invention may be clearly understood and its advantages more fully appreciated reference should be had to the accompanying drawings in which we have' illustrated one form of construction embodying our invention. It will be understood, however, that changes in the details of construction may be made within the scope of the claims without departing from the principle of our invention.

In the drawings Figure 1 is a vertical sectional view of a portion of a jig embodying our invention, said view being taken on the line 22 of Fig. 2;

v Fig. 2 is a top-plan view of a portion of a jig screen because such means consti- Pennsylvania, have invented certain new tutes no part of our invention. For ascertaining the construction of a jig of the character of that to which our invention is applied reference may be had to Letters Patent of the United States No. 1,055,730, issued March 11, 1913 to Henry W. Faiker.

Extending forwardly from the forward end of the jig screen is a gate 3 which controls the discharge of the slate, stone and like material, which it is desired to eliminate, underneath the lower edge of the upright breast plate 4. ihe gate 3 is provided with upturned side flanges 5 which are situated upon the outersides of the opposite sides 2 of the jig screen. The rear ends of these side flanges are extended and are bent or looped around a shaft 8 which is supported in bearings 9 secured upon the sides 2 of the jig screen. It is apparent'that the con trolling gate 3 is pivotally supported at what may be termed its rear edge. The side flanges 5 of the gate 3 are provided at their forward ends with projections 10 to which are secured the lower ends of a yoke-shaped member 11. 12 designates a rod having adjustable connection with the upper portion of the yoke-shaped member 11. The upper end of the said rod is connected with the forward end of a lever 15 pivoted at 16 be tween the upper ends of the angular bars 17 which are supported at their lower ends upon the'opposi-te sides 2 of the jig screen. To the opposite end of the said lever 15 a weight 18 is secured, said weight being adjustable to different positions upon the said lever, toward and away from the pivot 16. It may be secured in any position to which it may be adjusted by means of a bindingupon the said arm 20 and isadjustable there adjusted toward the lower outer end of the V the axis of the on. It is apparent that as the weight 21 is said arm it approaches a vertical line extending through the pivot 16 thereby decreasing the leverage of the force of gravit of the said weight 21 upon the lever 15. t is also apparent that as the lever 15 moves upon its pivot as indicated by the dotted lines 22 the horizontal distance between the weight 18 and the pivot 16 decreases while the horizontal distance between the weight 21 and the saidpivot increases. By this means a. more nearly constant force is exerted at all times through the yoke-shaped member 11 and rod 12 upon the forward edge ofthe controlling gate 3 tending to hold the same upwardly against the lower edge of the 'upright'plate 4. Preferably the weight 18 normally should be situated apa horizontal plane through pivot of the lever 15, while the weight 21 normally should be situated at a point below such. plane. This is desirable in order that when the outer swinging end portion of the lever 15 is lifted or elevated, the horizontal distance between the pivot 16 and a vertical line through the weight 18 will decrease, while the horizontal distance between the said pivot and a vertical line through the weight 21 will be inproximately in creased. It will, of course, be understood .that in actual practice the weight'lS may occupy a position a short distance below the horizontal plane through the pivotal axis of the lever 15.

The forward end of the gate 3 (which is of sheet metal) is provided with a depending flange 25 the lower edge ofwhich is also flanged as shown at 26. Secured to and supported upon the

flanges

25 and 26 is a transversely extending plate 30, the upper edge of which extends above the plane of the upper surface of the gate 3. The plate 30 is provided with slots 31 through which binding and holding bolts 32 extend. The plate 30 may be adjusted todifi'erent positions and secured and held in such positions by tightening the bolts 32 as is obvious.

For the purpose of adjusting the said plate 30 and also for the purpose of supporting the lower edge thereof we have pro vided the adjustable bolts 33 which are en- 'gaged with and extend through the forwardly extending flange 26 at the lower edge of the flange 25. T he presence of the upper edge portion of the plate 30 projecting be yond or above the upper surface of the plate 3 causes the slate to pile up to a greater or less extent upon the said plate so it forms a layer thereupon and thereby prevents the slate and other particles which is desired to eliminate from passing too freely along the bottom of the said gate. l fithout the presence of the plate 30, which may be described a retarding plate, it is even a piece of coal, will lodge between the said controlling gate 3 and the lower edge ofthe upright plate 4 and hold the gate open and thus prevent the

weights

18 and 21 from closingthe said, gate and thereby permitting the slate to flow out altogether too freely and in many instances permitting the escape or discharge of coal underneath the lower edge of the said upright plate 4.

Coal as it is discharged over the upper edge of the plate it passes through alchute 35 and is discharged on to" the endless conveyer 36 and is removed thereby; The slate and other material discharged beneath the lower edge of the upright plate 1 is removed or carried away by the endless conveyer 37.

We claim 1.. The combination of a controlling discharge gate for a jig, said gate being pivot normally .being situated at a point below said plane, whereby when the outer swinging end of said lever is elevated, the leverage of the first of said weights decreases and that of the other of said weights increases.

2. The combination of a controlling discharge gate for a jig, said gate being pivotally supported at its rear edge, a lever pivotally supported intermediate its ends, said lever being situated a distance above said gate, an adjustable connection between one end of said lever and the forward swinging edge of said gate, a plurality of weights supported upon the opposite end portion of said lever, one of the said weights normally being situated at a point in or near a horizontal plane extending through the pivot of said lever, and the other one of said weights being situated at a point below said plane,

whereby the leverage of the first of said weights decreases as the portion of said lever by which it is carried is elevated and.

the leverage of the other of said weights simultaneously increases, so that the force due to gravity exerted by saidweights re mains practically constant.

- 3. The combination of a controlling dis charge gate for a jig, said gate being pivotally supported at its rear end, a lever spaced above said gate and being pivotally supported intermediate its ends, a connection between one end of said lever and the forward swinging end of said gate, the opposite end portion of said lever being provided with a downwardly and forwardly extending arm, and weights, one of which is supported upon the opposite end portion of said lever and the other one of which is supported upon the said arm.

4. The combination of a controlling discharge gate for a jig, said gate being pivotally supported at its rear edge, a lever spaced above said gate and being pivotally supported intermediate its ends, a connection between one end of said lever and the forward swinging end of said gate, the opposite end portion of said lever being provided with a forwardly curved arm, said arm being concentric with the pivot of said lever, a weight adjustably supported upon the said opposite end portion of the lever, and a weight supported upon the said arm.

- 5. The combination of a charge gate for a jig, said gate being pivotally supported at its rear edge, a lever pivotally supported intermediate its ends a distance from said gate, means for connecting one end of said lever with the forward swinging edgeof said gate, a weight supported upon the outer swinging end portion of the said lever, an arm connected with the outer swinging portion of said lever, said controlling dis-- arm extending downwardly and being concentric with the pivotal axis of said lever and a Weight secured upon said arm.

6. The combination charge gate for a jig, said gate being pivotally supported at one edge, a lever pivotally supported intermediate its ends a distance from said gate, a connection between one end of said lever and the swinging edge of said gate and a plurality of means associated with the opposite end portion of said lever and exerting force thereon in opposition to the force exerted upon the said lever by the said gate, one of the said means be ing situated normally in or near a horizontal plane through the pivotal axis of said lever, and the other of said means normally being situated below the said plane, whereby the force exerted by'tlie first of said means decreases and that exerted by the other of said means increases as the portion of the said lever with which the said means are associated is raised.

In testimony that we claim the foregoing as our invention we have hereunto signed our names this 16 day of March, A. D. 1916.

RALPH FODERARO. GEORGE W. WILMOT.

of a controlling dis-