US1597066A - Concentrating table - Google Patents

Description

Aug. 24 ,-1926.;

' 1,597,066 E. DEISTER CONCENTRATING TABLE Filed August 8; 1.924 2 Sheets-Sheet 1 INVENTOR.

8 4, Fig (01E) By PM ZZZLQ A TTORNE Y.

Aug. 24, 1926. v 1,597,066

- E. DEISTE R CONCENTRATING TABLE Filed August 8, 1924 2 Sheets-Sheet 2 8a.; 711. fll

A TTORNEY.

Patented Aug. 24, 19.26.

EMIL, nnisrnn. or m WAYNE, INDIANA- concn-u'rnnr ne Ti -nun.

- Application filed 'Aug ust 8, 1924. Serial No. 780;9'-16'.

The invention relates to concentrating tables of the diiierentia lly reciprocating type, and it is adapted primarily for the separation of coal from waste materials that accompany it fromthe mine,jsuch as stone, sand, clay and slate, the ivention being applicable to the concentration of manyother materials. 1

The object of-the inventionis to -provide a novel formof table that will effectively separate coal and other valuable material from waste products that accompany the sameand to provide a table having a large capacity so that theconcentrating operations may be carried-on economically.

' The table is designed especially'to: treat materials that are in relatively small particles, namely, such particles as will pass through a screen having three-quarter inch openings therein. l

Anembodirnent of the inventionis illustrated in the accompanying-fdrawings in which 7 Figure 1- is a planview of the deck of a table embodying the invention; Fig. 2 a cross-secti0nal view on iineQ-Q of Fig; 1; Fig. 3 a cross-sectional view n line 3-3 of Fig. 1; Fig. 4 a cross-sectional. view on line-'4.4c ef'Fig. -1;*F-ig. 5" a cross-sectional view on line 5-5 of Fig. 11;;Fig. cross sectional view on line 6"6 of F ig; 1 ;-Fig. 7 across-sectionalview on line of Fig; 1; Fig. 8 an exaggeratedcross-sectional view on line 8'8 of Fig; I Fig. -9-an exaggerated cross-sectionalview on l ine9 9 of Fig. 1 and Fig. 10 a cross sectional view on line 7 7 of Fig; 1" illustrating a-lnodifiedforni of cover on the deck.- l 1 j In the drawings the' deck of the table only is illustrated, it being understood that the deck-is suitably suppertedf for longitudinal reciprocation and that a driving mechanism is connected atthehead or motion end 2 of the deck by which the deckis difi'erentially re cipr-ocated longitudinally 1 as indicated by'the arr-ow 3 in Fig- 1 "A'rel a tively high board 4' extends along the head end 2 of the deck and another high board 5 extends "along the upper or'feed side 50f the deck;

The deck'in operating positionis inclined transversely downwardly so that the dis charge sidebis lower thanthafeed side, and any point inthe head end 2-is lower than the point in'the edge'ofehe opposite or discharge end 7-'th-at is ina line drawn through the said point the head end and parallel to the line of motion of the deck.

The surface of the deck is a pluralityof coterminous sectionsA, B, and Cwhich differ in their inclinations. Section'A extends along'the feed-i side of the deck and slopes from the head end 2 toward" the discharge end'7 (Fig. 2); Italsoslopes transversely from the feed side to its lower boundary indicated by the broken line ab. Sections B and G slope downwardly from-section A to the dischargesid'e-6, (Figs. 5, 6), the trans verse slope of section B being greater than that o-f' either sectionsA or Cl. At t-h'e edge of the discharge end (Slo'f the deck the slope of the section C is thesame' asthat of the section A-sothat said: edge is preferably straight, (Fig. The sections B and C coterminate at the broken. line -c-d. -Section B. slopes upwardly from the head end Qto the section G and the section C slopes upwardly from section B to the discharge end 7 the longitudinal slope of section. C being steeper than that. of the section B (Fig. 4 1 The result of the. foregoing sec"- tions is that the deck has-a twisted ef? feet, the corner 'A" of the deck being the highest, the corner B being lower than the corner A, theccrner G being lower than: the corner B and the corner Dir being the lowest corner of the deck. As shown inFi-gs. 8 and 9, a' sectioniof the deck from corner C to corner B indicates'a con-cave surface onthe deck, and a section from cor- A, B and C.

A suitable covering is placed on the top ner A to corner D indicates a convex sursurface of the deck. This covering may be linoleum or smooth rubber 8 or a finely corrugated rubber 9-. I prefer to use linoleum or smooth rubber wherethe materials to be treated are relativelycoarse, and where thematerials are relatively fine I prefer to use the corrugated rubber.

A seleetednumber of: rifles 10 is' secured 'to the deck over the, cover, the riiiles being parallel to each other and disposed at a predetermined angle to the direction of reciprocation of the deckindicated by the arrow in Fig. 1 The forward ends "of the rifl'les preferably terminate on a diagonal line so that a smoother unriflled space D is present between the said'lineand the' d-is charge end 7 of' the deck, The ri fitle's are also tapered at their forward ends. They may be of any selected height or reduce in height down the transverse slope of the deck. For most uses of the table I find a. desirable arrangement of the rifiies is to arrange them in groups, the. riflles of each group being of a uniform height and less in height than the group above. An effective grouping of the rifiles for treating coal is shown in Fig. 5 where the two uppermost riffles constitute the highest group 11, the next five riiiies. con stitute a second group 12, the next 12 riii les constitute a third group 13 and the remain ing riffles constitute fourth group 1d. As shown in Fig.1, the diagonal arrangement of rifiies on the deck is such that the forward end or terminal of each riflle is nearer to the discharge side 6 than is the rear or head end of saidriiile to saidside. V

If desirable, in treating fine materials, high riffles 15 may be provided in order to form pools over certain of the riffles to facilitate the stratification of the materials on the deck in the well known manner.

A feed box 16 is supported on the board 5 adjacent to the head end 2 of the deck and a dressing water launder 17 is sup ported on said board and extends from the feed box toward or to the discharge end 7.

Where the corrugated cover 9 is used it is so placed on the deck that its corrugations will be parallel to the riflles when the latter are secured to the deck, and when so ar ranged the surface of the deck between each two riffles is corrugated, the relatively fine channels formed by the corrugations tending to assist the riffles in directing or guiding the materials caught by the riiiles toward the discharge end 7. The cover 9, when used, is placed over the entire upper surface of the deck so that the space D is finely corrugated and facilitates the guiding of the heavier or waste materials to the discharge end 7 of the deck.

Since the longitudinal inclination of the surface of the deck at the feed side thereof is less than the longitudinal inclination thereof at the discharge side, the greater proportion or bulk of the heavier particles is caused to move on the section A to the dis' charge end 7 of the deck and the lighter particles are rapidly released from the mass and caused to discharge at the discharge side 6, the relatively steep transverse inclination of the section B expediting materially the movement of the lighter particles to the side 6. Such heavier particles as reach the sections B and C meet the greater resistance of the steeper longitudinal slopes of those sections, their movement forwardly toward the discharge end 7 being retarded thereon thus facilitating the release and discharge of the lighter particles at the discharge side from those sections. i I

The twisted effect of the entire surface of the deck is most beneficial in the clean ing of coal, since it expedites materially the separation of the coalparticles from the refuse or waste products and causes a rapid discharge of the heavier gangue at the upper portion of the discharge end 7, the lighter gangue being captured by the lower and steeper portions of the deck and conveyed thereon to the discharge end 7. The table, therefore has a large capacity and practically no refuse discharges over the discharge side 6 and practically no coal. passes over the discharge end 7.

When fine light particles pass out onto the space D the wash water washes them down the transverse slope of that space and they move more or less down the longitudinally inclined section C and pass over the discharge side 6 rearwardly of the corner C.

t will be noted that each .of the three sections of the surface of the deck, when the table is in operating position, is twisted or warped in effect, so that the entire surface is twisted or warpedi This effect may be secured by building the deck with the severalinclined sections, or by constructing the table in such a flexible manner that the twisted effect is obtained by adjusting the corners of the deck as to vheight so as to secure the several coterminous sloping sections on its surface.

What I claim is:

1. In a coal concentrating table, a reciprocating longitudinally and transversely inclined deck, the feed side of the concentrating surface of the deck in operating position being higher than the opposite dis charge side thereof, the transverse slope of the concentrating surface of the deck downwardly from the feed side to the discharge side being greater at the head end than at the discharge end thereof and the longitudinal slope of said surfaceupwardly from the head end to the discharge, end being greater at the discharge side. than atthe feed side ofthe deck, and rifiles on the deck extending from the head end toward the discharge end thereof and diagonal tov the line of reciprocation of the deck, the forward ends of the rifiles respectively being nearer to the discharge side ofthedeck than are the rear or head ends thereof. 7

2. In a coal concentrating table, a reciprocating longitudinally and transversely inclined deck, the feed side of the concentrat ing surface of the deck in operating position being higher than the opposite dis charge side thereof, the transverse slope of the concentrating surface of the deck downwardly from the feed sid'e'to the discharge side being greater at' the head end than at the'discharge end thereof and the longitudinal slope of said surface upwardly from the head end to the discharge end be ing greater atthe discharge side than at the feed side of the deck, and rifiles' on the deck extending from the head end toward the discharge end thereof, and decreasing in height down the transverse slope of the deck and diagonal to the line of reciprocation of the deck, the forward ends of the riffles respectively being nearer to the. discharge side of the deck than are the rear or head, ends thereof.

3. In a differentially reciprocating concentrating table, a longitudinally and transversely inclined deck, the upward longitudinal slope of the concentrating surface of the deck from the head end to the discharge end being greater at the discharge side than at the feed side thereof and the transverse slope of the said surface downwardly from the feed side to the discharge side being greater at the head end than at the discharge end thereof, a corrugated cover on the deck, and riffles secured to the deck over the cover and extending from the head end toward the discharge end of the deck, the corrugations in the cover being parallel to the riiiles the riffles being diagonal to the line of reciprocation of the deck and having their forward ends respectively nearer to the discharge side of the table than are the head ends thereof.

4:. In a differentially reciprocating coal concentrating table, a transversely inclined deck having riflles on its concentrating surface diagonal to the line of the reciprocation of the deck and extending from its head end toward the opposite discharge end and the discharge side thereof, the said concentrating surface in operating position being con cave in a diagonal direction from the upper portion of the surface adjacent the head end and the feed side of the deck toward the diagonally opposite portion of said surface and said surface being convex in a diagonal direction from the upper portion of the surface adjacent the feed side and the dis charge end of the deck toward the diagonally opposite portion of the said surface.

In witness whereof I have hereunto subscribed my name this 4th day of August,

. EMIL DEISTEB.

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