US468251A - Picking-table for ore-washers - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

H. G. MERRY.

PIOKING TABLE FOR ORB WASHERS.

Patented Feb. 2, 1892.

(No Model.) 2 Sheets-Sheet 2.

H. G. MERRY.

PIGKING TABLE FOR ORE WASHERS.

Patented Feb. 2, 1892.

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UNITED STATES PATENT OFFICE.

HENRY G. MERRY, OF LOV MOOR, ASSIGNOR OF ONE-HALF TO GEORGE B. GAINES, OF RICHMOND, VIRGINIA.

PlCKlNG-TABLE FOR ORE-WASHERS.

SPECIFICATION forming part of Letters Patent No. 468,251,dated February 2, 1892.

Application filed April 29,1891. Serial No. 390,917- (No model.)

To all whom it may concern: passage 13' upon the table, while water and Be it known that I, HENRY G. MERRY, a dissolved debris may discharge through the citizen of the United States, residing at Low bottom portions of the chute if perforated, Moor, in the county of Alleghany and State as well as, through the end passage. The of Virginia, have invented certain new and picking-table comprises two shallow or low 5 5 useful Improvements in Swinging Pickingstrong side timbers or metal bars a and a Tables for Ore -VVashers; and I do hereby strong metal bottom plate I), which is perfo declare the following to be a full, clear, and rated near its upper end, as indicated atb, exact description of the invention, such as so as to allow for the escape of water, which will enable others skilled in the art to which leaks or incidentally passes down with the it appertains to make and use the same, refwashed chunks of ore from the washing cone erence being had to the annexed drawings, or mechanism and also any fine debris. It forming part of the same. is set on an inclination downward from its My invention relates to ore-washing marear to its front end, being suspended by 15 chines; and it consists in a longitudinallyscrew-rods D, provided with turn-buckles d, swinging picking-table, upon which the large said rods being connected at their upper ends chunks of washed ore fall and on which forby pivots f to eyebolts g and by their lower eign substances and olods of dirt are picked ends to plates 7L, attached to the under side from such ore and by which the ore is conof the table, said plates being provided with 20 veyed and discharged into cars or wagons, pivotsor pivot-rods, as shownin the drawings. and means for suspending and operating the The pivot or pivot-rods m project beyond the same, said table being applied in suitable retable on each edge. suspending-rods D, similation to the ordinary cones or other washing lar to those represented, are connected to the mechanism and conducting-chutes of such table on each side. The table thus suspended 2 5 machines, as will be hereinafter described is free to swing on the pivots f of the eyebolts and specifically claimed. g, and in such swinging movement the sus- Figure 1 is abroken side elevation and parpending-rods are free to articulate on the tial section of an ore-washer with my improvepivots or rods m, and thus no cramping or ment applied thereto. Fig. 2 is a detail top straining action is experienced. By means 0 of the picking-table. of the turn-buckles (Z the inclination of the In the drawings, A indicates one of the ortable can be increased or decreased accorddinary cones used in ore-washers, the same ingly as it is desiredto have the ore run being constructed and mounted upon a frame faster or slower from the table. A and operated in the ordinary manner. A revolving shaft E, carrying a cam E and 3 5 The construction of the Washing mechanoperated by a belt E on pulleys E 15 is pro ism and mode of operating the same not be vided below the rear solid portion of the taing novel further than in my picking-table ble, and attached to the under side of the tacombined therewith, no special description of ble is a lug c for the cam E to strike against the same requires to be given here. during the revolution of said shaft.

0 B is a laterally-converging or double-in- Near the middle of the table, on its under clined chute applied below the small ends of side, a limitation bum per-stop lug F is prothe cones, into and through which the ore is vided, the same being also attached to the delivered upon the picking-table O. This table. This lug operates in conjunction with chute mayhave either solid or perforated ina yielding buifer G, made preferably of rub- 45 clined sides or bottom portions, and between her. This buffer is attached to a strong an- 5 the lower ends of these bottom portions apasgular framing portion A and serves for arsage B is provided the full width of the table resting the table on its return movement for the discharge of the ore, said passage runafter it has been swung backward by the camning transversely across the upper end of the shaft. 3y means of the cam E of shaft E 50 table and the ore passes out through this and the lug 0, buffer G, and the lug F avery IOO W each side of the tablecan conveniently and effectually pick out such solid debris, as mud and stones and the like, as are not washed from the ore, and draw the same away and discharge them ovcr the shallow or low side bars at the sides of the table, while the water and dissolved debris which incidentally come down from the washing cone or mechanismcan flow off through the perforations b, and the clean chunks or large pieces of iron are caused to pass off at the forward end of the table by their gravity and the inclination and motion of the table.

The dotted lines in the drawings illustrate the table in the position it occupies after the cam-shaft has thrown it backward by coming in contact with the lug c, and the full black lines illustrate its position after it has made its return movement and struck the buffer or bumper.

It will be understood that the cam E suddenly releases the table, giving it a quick, sudden, and jerky movement, and that the buffer limits the extent of the movement on the return of the table, and that by reason'of this jerky or sudden movement in a longitudinal direction the lighter materialsuch as clay or sand-rockis always thrown to the top of the ore and toward the rear or upper perforated end of the table,and that the pickers are thus enabled to readily and conveniently pick out the same, while the water and dissolved dbris which incidentally come down with the Washed chunks of ore are freely escaping through the perforations 'b'. The table is preferably made of boiler-plate, and may be of any desired width and length; but the bars a at the edges must be very low or shallow, in order that, while they serve for detaining the large chunks or pieces from falling off the table .sidewise, shall not ofier too great an obstruction to the mud and debris as it is raked sidewise off the table.

My invention differs from appliances for amalgamating or catching gold and silver in chambers containing quicksilver, it onlybearranged to receive the washed material from W the machine, means for vibrating it in the line of the delivery of such material, vibrating suspending-rods on each side of the table and pivotally attached thereto and to the frame, and means for vibrating said table simultaneously with the operation of the washing means, substantially as described.

2. In an ore-washing machine, in combination, a suitable frame, a conducting-chute, washing means, an inclined longitudinal-lyswinging table having low or shallow ,side bars arranged to receive the washed material from the machine, means for vibrating it in the line of the delivery of such material, vibrating suspending-rods on each side of the table and pivotally attached thereto and to the frame, cam-shaft with lug for swinging. the table, a yielding buffer and lug for arresting the back movement of the table, and gearing for conjointly operating the mechanism of the table and the washing means simultaneously, substantially as described. 7 W

3. In an ore-washing machine, in combination, a suitable frame, a conducting-chute with converging sides, washing means, an inclined longitudinally-swinging table having low or shallow side bars and perforated at its upper or rear end, arranged to receive the washed material from the machine, means for vibrating it in the line of the delivery of such material, vibrating or suspending rods on each side of the table and pivotally attached thereto and to the frame and provided with adjusting turn-buckles, cam-shaftwith lugQfor swinging said table, means for arresting the return movement and for jarring the table, and means for conjointly and simultaneously operating the mechanism of the table and washing apparatus, substantially as described.

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

HENRY G. MERRY. Witnesses:

S. F. RIXEY, S. G. CARGILL.

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