US1645603A - Sand and gravel washer - Google Patents

Description

Oct. 18, 1927.

19.21l :s sheets-slieet 1 s. A. LoFTUs ET AL SAND AND @RAVEL wAs'HER Filed oo t.

.12, gli 7 Oct. 18, 1927.

M f. @Ma/ 1,645,603 s. A. Lor-"rus ET AL SAND AND GRAVEL WASHER Filed Oct. 3l. 1921 5 Sheets-Sheet 2 oct. is, 1927.

s. A. LoFTus ET A.

SAND AND GRAVEL WASHER Filed Oct. 51, 1921 3 SheetsfSheet 5 Patented Get. 18, 1927.

:Unirse STATES PATENT OFFICE.

SEBASTIAN A. LOFTUS AND THOMAS CURETON, 0F DAYKTON, OHIO; SAID LOFTUS AS- SIGNOR T0 SAID THOMAS CURETON AND SAMUEL CURETON, 0F PLYMOUTH, OHIO.

SAND AND GRAVEL WASHER.

This invention relates to machinery tor separating n'iaterials7 and more particularly to that type of machinery known as sand and gravel washers.

On'eotthe principal objects of the invention is to provide apparatus for the washing, screeningand separating ot sand and gravel, and similar material, ywhich is etlicient, easy of operation and maintenance,

` and simple inrits construction.

Other objects and4 .advantages of the invention will be yapparent 'from the description thereot set-out below, when taken in connection with the accompanying drawing. ln the drawing, in which like characters oi' reference designate like parts throughout the several views thereof :l

Fig. 1 is a view, partly in elevation and partly in section, ot a sand and gravel washer embodying the invent-ion;

Fig; 2 is a 'plan view of the apparatus shown in 1;

Fig. 23 is a sectional view along the line 3m?, oft Fig. 1, looking in the direction ot the' arrows; Y f

F l is a view in elevation of one of the buckets forming a part ot the apparatus, the view being in the direction of the arrow shown in Fig. 5; f

Fig. is a sectional view through the buckets shown in Fig. 4, along the line 5-5 thereof, looking in thek direction of the arrows;

Fic'. G is a sectional view through theapp: tus along the line 6,-6 ot Fig. 1.

cable to the separating ot' materials, 'tor purposes ot description, and as settingout a. preferred 'embodiment thereof, it is shown innonnection with apparatus particularly designed tor the separation ot sand and gravel. ylt is a general practice towsubject4 `while this invention is generally appli-r One end of this drum has a head 11 secured therein, in which is provided an opening 12, through which the sand and gravel to be treated is introduced into the drum. The

opening 12 is preferably surrounded by an inclined `flange 13, and, inasmuch asthisy flange serves as the oversflow for the water introduced linto the drum during the wash# nig operation, it is made ot such eiiective -width that a suitable quantity of water is at all ,times present in the drum. Any desired type ot apparatus torleading away the water which escapes over the lip of the fla-nge 13 may be provided,- and, since this particular part oi` theV installed apparatus maybe oi' any conventional character,1 no

specitc construction thereof is shown.

The sand and gravel to be treated is introduced into the rotatable'drum 10 by means or the feed hopper 15, the sand and gravel' being supplied to this hopper by hand, or by means otv any suitable conveyingapparatus. As illustrated in Figs.' 1 and 2, this hopper has its lower wall 16 inclined at such an angle thatthe material introduced thereinto will readily slide along this lower wall, and this lower wall is extended, as shown at 17, to form a. discharge spout, which, when lthe device is assemblecheiztends into the opening y12, so that material'supplied to. the'hopper 15 will bedischarged J from this spout' intothe interior ot the drum 10. In order to control the rate of discharge trom` the hopper, and to also control the positioning of the discharge spout relative to the water within the drum 10 this'teeding apparatus is made adjustable. The upperv portion oit the hopper is yprovided with lanA arcuate slot 18, constructed to receive a supportingbolt y19, carried by an upstanding standard 20, the lower end of which is rig- *idly secured to one ot the side members 21 'of the trame upon Vwhich vthe entire apparatus is mounted. Extending transversely between thetwo members 2O is a cross bar Q2, through which passes one end of the bolt.v Y 23, which is p ivotally attached to the extension 24 carried bythe lower end of the hopper or discharge spout, suitable adjusting nutsv 25 being provided upon this bolt.

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double adjustment of the hopper and discharge spout is thus provided for. By vary ing the position of the supporting bolt 19 within the arcuate slot 1S, the hopper may be swung about the point of pivotal connection of the bolt 23 to the member 24e to increase or decrease the angle'iof inclination of the bottom 16, of this hopper. By proper manipulation of the adjusting nuts 25, the position of the bolt 19 within the arcuate slot 18 remaining constant, the lower end of the hopper may be swung about the bolt 19 as a pivot. By properly manipulating both of these adjustments the hopper may be` moved bodily without any variation in its angular positioning, or it may be moved both bodily and its angular positioning varied at the same time. This type of adjustment is particularly useful in that the angular positioning of the hopper may be varied as desired, and the positioning of the discharge' spout relative to the water. within the drum Y 10 at the same time so maintained as `to minimize splashing due to the introduction of the material into the drum.

Attached to the drum, and positioned interiorly thereof, are buckets 26, these buckets being arranged throughout thelength of the interior of the drum in series of three. .As the drum rotates the material therein is caught up by these buckets, moved through the water in the lower part of the drum, to effect a washing of such material, and then carried upwardly in the buckets from which. while the buckets are in elevated position, the material slides, being at the same time fed forward to bringl it into the zone of the next succeeding series of buckets, where the operation is repeated. rotatable drum is thusmoved along the drinn from one end to the other, being washed as it travels, so that dirt is separated from the sand and gravel, or whatever other material may be treated, the gravel being discharged through one end of the drum, ywhile the dirt or loam, originally admixed with the sand and gravel, scarried out through the other end with the overflowingr wash water.

The arrangement and construction of these buckets 26 is clearly shown in Figs. 3, ll and 5. As shown, in Fig. 3 the buckets are arranged around the drum at distances of substantially 120O from each other, three buckets being employed. Of course the number of buckets in any series maybe varied as Vde-` sired, to suit any particular size of drum.

VEach of these buckets consists of two end plates 27, each of which is shaped to correspond with the curvature of theA drum 10. and provided with cross pieces 28 and 29 which pieces are suitably curvedI and constructed. for rigid attachment to the shell of the drum. As shown these buckets are riveted to the drum, but other means of at- The material within the,

tioned between the end plates 27 is a plate 30 one edge of which terminates a considerable distance from the shell of the drum, to thus leave a free opening, designated generally bythe numeral 31, within the bucket, the other end being extended beyond the end plates 27, and curled upon itself to form an inclined trough-like portion or spout, at that end of the bucket remote from the shell of the drum, and designated generally by the numeral 32. Attached to the cross piece 29 is an upstanding flange or baille 33, which extends entirely across the bucket. These buckets are so constructed and attached to the drum 10 that as the druml rotates the buckets are carried thereby. As shown in Fig 3 the drum `is in such position that one of the buckets is just reaching its lowest po` sition. The construction of the buckets is such that as the drum rotates, carrying the buckets through lower position, each bucket is free to pass through the water, and the sand and gravel contained therein, except,

for the baille or flange 33. As the drum rotates this flange 33 carries the sand and.

gravel with it through the water, which is free to pass over this baffle while the sand and gravel are not. A positive. movement of the sand and gravel through the water is thus secured to give a maximum washing effect. As the drum continues to rotate the sand and gravel in advance of the flange 33 will be picked up thereby and carried up* wardly until, as the rotation continues, it will drop off the flange 33- onto the member 30 whence, during further rotation, it will slide down into the inclined trough-like portion from which it will slide to fall back to the bottom of the drum. Thorough agitation of the sand and gravel is thus secured. As shown particularly in Fig. l, these drums are so arranged and the inclination of the trough-like portions is such that the material as it slides therefrom will be caused to travel lengthwise' of the drum, and will be advanced into the zone of the next succeeding` series of buckets to cause it to be taken up. as rotation of the drum continues, by the buckets in that next series. The construction of the buckets is such that the material ltherein will not slide out until they have reached substantially uppermost position, and as seen from Fig. 3 when the buckets are in this uppermost position the material which falls from them will drop directly into the water in the bottom of the drum. Unless this arrangement of the buckets is secured the material falling therefrom, even though it is properly advanced, may fall upon the drum, above the water level, where it would be caught up by the next succeedingbucket and carried upwardly without really beingI moved bodily through the wash water.

In the construction shown the material to be washed is introducedI through one end-0f (itl the drum and is caused to travel throughout the length of the drum being discharged through the opposite end thereof, the wash water, with its load of removed dirtpassing out through the same end of the drum through which the material is introducedM The discharge endof the drum is provided witha head 35, attached in any desired man ner tothe di.um,`which head is provided, as shown most clearly in Fig. 6 with three openings 36 therein, each oi' which openingsv the neii smallest size desired and the screen 39 having openings of a still sinallerfsize so that four sizes of material may b ethus secured. Conveyor' troughs 40 through which the sized material is led away to any desired place are provided, whicht-rouglis are shown in a purely conventional manner since they may be of any desired construction. Preterably the head 35 is provided with integral flanges, designated generally by the numeral 41, to which the screens are attached, in any suitable manner, as by means oif'bolts,rasv shown. Any other suitable screen mounting may be used. Each of t-he discharge openings 36 is provided with a curved flange 42, shown in dotted line in Fig. `6, adapted` to receive thev discharge end of thev bucket cooperating` `with that discharge opening,V` the purpose of this flange being to prevent the `back flow of material `from the buckets into the drum, as this material is discharged'onto the sizing screens, f

The closure member 35 is provided with a centrally arranged bearing member 45 adapted to receive and support a water supy ply pipe 4G. The passage throught-he bearing is coaxialwith therotary drum l0 so that the drum rotates about the water supply pipe. l able distance intothe drum lOand' is provided with a plurality of 'openings 47' through which water sprayed into the' This water is, Aduring operation of' the device, continuously introduced, a bodyy drum.

of Water thus being maintained in the botof the flange 13 carrying out the dirtre# moved from the gravel.l In order to prevent sand, :and the like, from working-into the bearing 45 and cutting it out, the linnerend This pipe 46 extends a consider-v ot this bearing is provided with a kgroove 48,

the pipelbeing provided with an openingr` 49, positioned within this. groove, so that Y during operation of t-he device water is continuously sprayed into this groove to wash out any sand which tends to accumulate there;

A partition 50, having a centrally arranged opening therein, is provided `about ii'iidway of the druin to preventthe flowing water from carrying the line washed sand,

in suspension therein, .out with the removed fdirt.` V 7 i AThe drum l0 is provided, adjacent each end, with a ring 55. Each of the rings carries thereon a circular tracko', and `a ring gear 57. Suitably attached 'to the members 2l of the trame are two cross members 58, each oi which is provided with upstand` ingarins 459. Journaled in each pair of the upstanding arms 59, valong one -side of the rifaine, is a stub shaft or spindle 6() upon eachefl which is mounted acombined roller and pinion 6l, the roller'being -flanged and adapted to cooperate with the track ring 56, and the pinion being adapted to mesh with the ring gear 57. J ouriialedv in the two pair oi upstanding arms 59, along the other side of the frame is a. shaft-'62, which has mounted 'at each end thereof a combined roller and pinion G3, identical in construction with the roller and pinion described. The shaft 62 also has mounted thereon a beveled gear 64,

adaptedto niesh withk a corresponding bevy eledgear 65 carriediupon one end of the mounted `thereon a 'pulley constructed for belt drive attachment 'to some .suitable source of power.

AsY the pulley' 6,7 isrOtated from the power source, the Vshaft 62' is correspondingshaft 62 willi cause 'rotation of the drum upon these rollers. In practice' the rollers sometimes .tend lto bind or'stick..ior one reason or another, and as a result sliding. rather than rolling motion, occurs between jtl'ie'itrack rings andthe cooperating rollers.

drive shaft the other end of which has In'orderto .overcome this andto insure rolling Contact of these various memberseach .of the drive pinions is rigidly attached to' one lof Vvthe rollers. And` in each of the l*members 6l thel roller is 'rigi'dlyattachedf `tto the pinion which meshes` with thering I gear and functions as an idler pinion so that tom of thedrum, the overflow over the 'lipk these'two/ rollers are also constrained to. ro-

ytateduring `operation of the device atthe rality of openings 70, within that portion" which cooperates with the screens, through which water is sprayed onto the material discharged from the drum to assist in complete separation and screening of such material.

lVhile the form of apparatus herein described constitutes preferred embodiments of the invention, itis to be understood that the invention is not limited to this precise form of apparatus, and that changes may be made in either without departing from the scope of the invention which is definedin the appended claims.

lhat is claimed is:

l. In' sand and gravel washers, and the like, the combination with a rotatable drum, having an inlet opening at one end and an outlet opening at the other end thereof; means for introducing into the drum, through the inlet opening thereof, t-he sand and gravel to be washed and separated; means for continuously 'supplying water to the drum during operation of the apparatus, to maintain a predetermined quantity of water in the drum; and a plurality of buckets in said drum, arrangedgin successive series. each of said buckets being open adjacent t-he shell of the drum and having a battle member therein so arranged andL constructed as to, during rotation of the drum, prevent passage of sand and gravel through said bucket while allowing VfreeV elevated position. is dropped from the baffle into the inclined spout, from which it of the drum,the other end having attached thereto an inclined spout one end" of which is closed' by one of the said end walls, the other end being open, and ya baille plate eX- tending between the end plates and so positioned as to allow free passage of water through the bucket adjacent the shello'f the drum as the drum rotates but to prevent passage of solid material through said bucket.

A 3Q A sand and'grav'el washer' comprising,

in combination, a rotatable drum, having an inlet opening and a separate discharge opening therein, means for introducing sand and gravel, and the like, into said drum, means for introducing water into said drum; and a plurality of buckets mounted within said drum each of said buckets comprising spaced end walls, constructed for attachment at one end to the interior of the shell of the drum and at the other end having attached thereto an inclined spout one end of which is closed by one of the said end walls, the other end being open, and a baiile'plate extending between the said end pla-tes and so positioned as to allow free passage of water through the bucket adjacent the shell of the drum, during rotation of said drum, but to at the same time prevent passage of solid material through said bucket.

4. In sand and gravel washers, or the like, a rotatable drum constructed to contain the material to be treated, said drumy having an inlet opening at one end thereof; an adjustable feeding member having a discharge spout extending through said inlet opening and positioned within the inlet opening end of said drum and pivotal means at each end of 'said feeding member, said means being capable of concomitant adjustment to vary the angular inclination of the said discharge spout, without substantially effecting the horizontal 'positioning of the lower end thereof.

5. In sand and gravel washers, or the like, a drum constructed to contain the material to be treated, said drum having an inlet opening; a feeding member having a d ischargeV spout-positioned within the said inlet opening, the upper end of said feeding member having an arcute slottherein, supportingy pins carried by the frame of the apparatus and positioned within the said arcuate slots, and a horizontally adjustable pivotal connection between the lower end of the feeding member and the said frame.

6.v As an article of manufacture, a. bucket for use in'sand and gravel washers, of'that `kind in which the sand and gravel lis agitated with a body of water maintained within al rotatable drum, said bucket comprising spaced end wallsconstructed for attachment, at one end to the interior of the end of the drum, the other end having attached thereto 7.A sand and gravel washer of thev character described, comprising'a rotatable drum, means for supplying the material to be washed through onerend of the drum, j

means for supplying Water to the drum, to

effect Washing of said material, and a pluing the sand and gravel from movement rality ogt buckets carried upon the inner side through the bucket at the same time.

of said drum, each of said buckets having an In testimony whereof We hereto affix our 10 opening therethrough permitting free passignatures.

sage of the Water Within the drum through the bucket as the drum rotates, and means SEBASTIAN A. LOFTUS. cooperating with said opening for restrain- THOMAS CURETON.

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