US1095817A - Coal-washer. - Google Patents

Description

H. CORY.

GOAL WASHER.

APPLICATION IILED MAR. 25, 1913, RENEWED EEB. e, 1914.

Patented May 5, 1914.

e a? I.

[live/1% COLUMBIA PLANOGRAPH 60.,WAsmNq1'oN. u. c.

HARVEY CORY, or DORMON'I BOROUGH, PENNSYLVANIA.

GOAL-WASHER.

Specification of Letters Patent.

Patented-May 5,1914.

Application file-:1 March 25, 1913, Serial No. 756,681. Renewed February 6, 1914. Serial No. 817,052.

To all whom it may concern:

Be it known that I, HARVEY CORY, a citizen of the United States, residing at Dormont Borough, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Coal-Washers, of which the following is a specification.

My invention relates to improvements in coal washing apparatus and is designed to provide, in such an apparatus or machine, a jig construction embodying a reciprocable jig frame having a screen bottom, in combination with a relatively stationary valved head, constructed and adapted to operate in the manner more fully hereinafterset forth.

Referring to the drawingsFigure 1 is a longitudinal vertical sectional view through the washer, taken on the line II of Fig. 2. Fig. 2 is a plan view of the washer. Fig. 3 is an enlarged detail view showing a modified construction of the valve.

Referring to the drawings, 2 represents the tank, vertically arranged between the rectangular inclosing walls 3, in the upper portion of which is reciprocably mounted a vertically operating jig 4. Said jig is generally rectangular in construction, pro vided with walls fitting somewhat snugly within the walls 3 of the jig tank, whereby to make a substantially working fit therein, but not necessarily water tight. The jig is actuated by pitmen 5 and cams or eccentrics 6 and suitable gearing 7 from any available power, as will be readily understood, and as is customary in an apparatus of this type. Crushed coal is delivered to the jig by a chute 8 from a bin or other suitable source, under control of the operator, to the jig as needed. The jig is provided at some distance above its lower end portion with a perforated bottom 9 adapted to collect the heavier impurities, as slate, sulfur, etc., said screen bottom being preferably inclined, as shown, toward an impurities outlet opening 10. Said opening is controlled by a sliding gate 11, actuated through suitable mechanism from an operating handle or lever 12, preferably mounted on the stationary frame work of the structure. The lower wall 13 of the jig below outlet 10 is spaced back slightly from the adjacent wall 3, providing ample clearance for passage of the impurities downwardly into the lower portion of the jig tank 2, from whence they are removed by a screw conveyer 14, or other suitablemeans. Adjacent to the jig tank is the washed coal tank 15 of generally rectangular shape, having surrounding walls 16, inwardly sloped at the bottom portion, from whence the washed coal is taken by an elevator 17 or other suitable means. The par tition between the jig tank and the washed coal bin is lowered, as indicated at 18, providing an overflow conduit. for the washed coal from the jig, such conduit being submerged below the water level a. At the other side of the washed coal tank is an overflow conduit 1.8 from whence Water is returned from the upper portion of tank 15 backwardly through conduit 19 to the jig tank 2 below the jig, thereby providing for circulation of the water. Inthese respects, the apparatus is generally similar to that shown and described in patent of Bradford, N 0. 143492, of Oct. 7,1873. The particular feature of novelty in connection and combination with the jig structure of this type, is a stationary bottom 20, independent of the jig, located within the four downwardly extending walls4 and 13 of the jig, and rigidly mounted within the tank by suitable supporting timbers 21. The stationary bottom 20 is provided with a plurality of water circulating openings 22 having opening and closing valves 23, adapted to open for upward flow of water. on upward travel of the jig, and to close against downward circulation on lowering the jig, whereby to cause the water above bottom 20 to pass upwardly through the screen 9 into the working portion of the jig. The advantages of this construction are that they thus produce an enforced circulation of the water by checking its back flow within the lower portion of the jig, avoiding the necessity of mounting circulation valves on the jig itself.

In order to render the valves 23 as sensitive as possible,'they may, if desired, be counterweighted, as indicated in Fig. 3, in which case the valve 23 is pivoted at 24 on theupper edge portion of a suitable casing or frame 25, the valve having a rear extension 26 carrying a counterweight 27, preferably adjustable thereon. -A stop abutment 28 may, if desired, be located beneath the counterweight so as to limit the upward travel of the valve. By this means the valve is rendered quite sensitive, and will open or close under slight variations of the flow in either direction by the act-ion of the reciprocable jig.

As thus constructed, the washer as a whole is capable of continuous operation, it provides for ample water circulation, and the valves may be so constructed and adjusted as to provide for the desired flow and volume of water, depending upon the quality of the material being washed, supply of water, or other conditions.

The construction may be changed or varied in different features of design, proportions, or otherwise by the skilled mechanic, but all such changes are to be considered as within the scope of the following claims.

hat I claim is:

1. In a coal washing apparatus, the combination with the jig tank having an apertured stationary valved bottom extending transversely of the tank, of a reciprocable jig embracing said bottom by its lower portion and having a transverse supporting screen, substantially as set forth.

2. In a coal washing apparatus, the com bination with the jig tank having an apertured stationary bottom extending transversely of the tank and provided with counterweighted valves, of a reciprocable jig embracing said bottom by its lower portion and having a transverse supporting screen, substantially as set forth.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

HARVEY CORY.

IVitnesses O. M. CLARKE, FREDK. STAUB.

tower of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images