US1986596A - Conveyer mechanism - Google Patents

Description

Jan. 1, 1935'. G. B. NORRIS CONVEYER MECHANISM Filed July 22. 1951 2 Sheets-Sheet 1 INVENTOR George B. Norris.

J 1935- G. B. NORRIS 35,

CONVEYER MECHANI SM Filed July 22, 1931 2 Sheets-Sheet 2 5v INVENTOR Q George B. Norris Patented Jan. 1935 M -NTF- QF f-"Q" ,9's6,596 v n ,n d nyErEaivmcnAmsM George'B. Norris, Columbus, Ohio; assignor to The lJefirey Manufacturing- Company, Columi v bus', Ohiog'a corporation of (Ohio a i i Q .The present invention relates to conveying mechanisms particularly adapted for use in coal- 'mines and the like, and moreiparticularly; to

r such mechanisms in combination with a kerf cuti} ting mining machine to receive the cuttingsor slack produced by the latter and to remove same from the immediate'vicin'ity of the cutting operations'. 1 i i i t .i

, The invention will be described with reference w to a mining system employing a track: mounted machine presentingv a forwardly:projectingmut: ter bar and adapted to be sumped or inserted in a coal faceand thenpwhile so inserted," moved p transversely of thetmachine to cut a horizontal kerf; The kerf thus developedrihas' an arcuate inner wall -and upon disrupting iandiremoving the V kerfed increment, the arcuatenessrof the kerf l is substantially imposed upon th'er newfl face from floor torooifor, to use another formof expression, an arcwall is presented. Successive cuts develop successive wallsfiuntil the entry or n room ha'sbeen extended-as far as desiredrf; This procedure constitutes the arcwall system of tionsand the transverse conveyer .has a disen-' gageable supporting connection with the ilongitudinal conveyer; V i a; in Without further reference tothe general characteristics of the invention, I shallproceed to describe a preferred specificembodiment there-v H of whichisshown in-the accompalhyingdraW- ings. In the drawings; i f T Figure l is a side elevation. of miningequipmentembodying the invention, the conveyers be ing shown in operativeposition.

Figure 2 is a diagrammaticplan view of the lining machine of Figure 1 with the conveyers" izintransport position. I Figure 3 isa plan view of the devices as shown riFi u eLgan v i 1 Figuref his an 1 end elevation of the mining machine and conveyers. j

"turntable 13 mounted on thering 9 supports a "driven froma motor 16' on the turntable. The motor 16' through controllable connections also cured to an anchor. lug 21 external to the turn- According to the present invention, a conveyer or receiver is associated with the mining machine Referring to the drawings, referencenumeral 5 designates generally a truck mounted onwheels 6 which engagea mine track 7. A motor8 on the truck is connectible through suitable trains with the wheelstfi to drive the latter atia trans- 5 porting speed to move the truck from'place to place invthe mine: "or'at a working speed during the cutting operation. r l i i 1 1" 1 @Aring 9 supported on pedestalslo; 11 and 12, is vertically adjustable and tiltable through controllable mechanism driven from motor 8. A

normally forwardly projecting cutter bar 14 whose icutter chain 15, provided with bits 16, is

drive's a drum 17 on the turntable, the drum having windable't hereon a cable 18 which, as shown in Figure 3,is trained about sheaves 19 and 20 mounted at the edge of the turntable and se- 2 table. Therwinding direction of the cable may be reversed on the drum and the cable trained in the opposite 3 direction from that shown about suitablyfidisposed sheaves,'and its nd anchored 5 so that the turntable may be swung from the motor '16. in either direction without reversing the motor. Lockingmeans for the turntable in--' cluding the peripheral notches 22 are also p'rovidd'sothat the cutter bar 14 may be rigidly held in the desired angular'relation to the turn' table axis;

In the cutting operation the machine is mum) to the mine face on the track 7 at a transporting speed. Withthe cutter bits disposed as shown in Figure 3, the cutter chain will be driven in a counterclockwise direction and under these circumstances the" cutter bar is swung tothe right hand corner of the room or entry and the'tdrn-f table locked; Hereupon the machine is advanced at working speed by the wheels 6 and the cutter bar sumped or insertedin the mineface. When the cutter bar has been sumped to the desired extent} forward movement of the machine is arrested andthe machine braked or braced to hold it1 ag ainst movement. The turntableis now unlockedand the drum 1'? rotated to swing the kerf cutter across the front of the machine to the left hand side of the room. Hereupon rotation of the turntable isarrested' and the locking means again 9: applied, the truckthenbeing backed away from: the face with the cutter chain still running. By the describedkoperation a kerf has been formed at the desired height having parallel ribs and an 'arcuate end wall. Further description of the maporting lugs.

chine and its mode of operation is unnecessary since both are well known in the art and the above brief description will suffice for the purposes of the present disclosure.

Projecting laterally at each side of the truck body are pairs of lugs-23, 24, and 25, 26 respectively, these lugs being provided with aligned horizontal bores, which oscillably: receive rods or shafts 27,28 respectively, the rods being considerably longer than the distance between their sup- Conveyers29 and 30, each compris ing elongated horizontal trough portions 31 and 32 are respectively arranged at the sides of-the" truck. The side wall 33 of trough 31 has fixed thereto brackets 34, 35 and 36, Figures 2 -and 3 and have boss portions provided with-aligned bores in which rod 27 is receivedandfixed. It, will be noted that brackets 34am 35are spaced as brackets 23 and 24, but lie behind thelatterr- Bracket 36 is spaced from bracket 24 at a distance at= least e ual -to the distance between "brackets 35 'and23: Withbrackets 34'and 35 'in abutmentwitl'i b'rackets '23 and 24,-a's shown in Figure '3, the conveyer trough-31-projects fofwardly of the machine a distance equal to the maximum projection Qf 'theCiitterbar-M;

1 he"inn"er wa'll 3-7 of'trough32 ha'sfixed thereto brackets 38, 39 and 40 similar inform and arr rangement to bracket gq; and36andsecumd torod'28. i U

Troughs 31 and32' have rearward'extensions 41 and '42 which, with-theconveyersin the operative position of Figures 1 and 3;: are upwardly inclined. Endless chains '43 and 44 circulate throughout the length of conveyer 295111: superposed runs and are connected by means of material engaging flights-45. Atthe'juncture of the horizontal and inclined trough portions the cliains are held to the .trough' bottom" by. means of superposedguides 46 and. 4'7 securedxt'o the sidewalls of theitrough. The chains at therear endiofithe conveyer engage sprbcket wheels sec'ure'd to a shaft 48 which, through .a? gear. 49, a

pinion .50ya5 sprocket 51 and achain' 52; driven from a sprocket 53 on the armature :shaft] of a -motor 54. 'Motor '54 is'mounted in a' frame 55 beneath? the lower. end :of the inclined trough portion-4'1, the bottom of the framebeing'coplanar with the bottom'of the horizontal'trough' portion:

3-1; At its upperend the trough portion 41 has removably attached thereto .inre.ceiving relation an inwardly directed spout 56 which in the operative-position ofthe conveyer 29, that 'isrwiththe bottom of troughiportionlil transverselysubsteLn tially'horizontal,projects-over a mine car 57* on;

the track to th'erear. of the'mining machinei A longitudinally adjustable pedestal 58- isin pivotal connection withthe'bottom of trough portion 31 at'its forward. end, the pivotal connee-- tionbeing in theinature' of an elbow jointincluding a pivot pin parallel to rod-27 and on the side of thepedestal adjacent the rod; 'Similar pedes-' tals '60aand61 are provided rearwardly of pedestal 58; pedestal v61 being mounted directly below motor54. With the conveyer in the operative position of Figures 1 and 3,- the ,lowerends of theidentical with that of conveyer 29 so that its further description is thought to be unnecessary. At its upper end it is provided with a detachable chute 63 projecting inwardly over the car 5'7.

The two conveyers extend forwardly of the machine to their maximum extent as particularly shown in Figure 3, and a transverse conveyer 64 is arranged between them at their extremities. Conveyer 64-comprises apair of chutes 65 and 66 pivoted together on a pin 67 and in the operative position of the conveyer the chutes are'substantially in the form of an inverted V, as shown in Figure 4-. At their lower ends the chute bottoms are provided with transverse cleats 69 and 70-," which engage the upper edges of the trough sidewalls 33- an'd 37-jto support the conveyer 64 thereon. The forward portions of the chute ends have upwardlyan'd outwardly inclined extensions and 76, which terminate in rearwardly extending upwardly and outwardly inclined wings 77 and lii, supported on the outer side walls of troughs 31an'd 3'27through cleats 68 and 71. The. lower'end-s 'of the chutes'fiwith the extensions and.

wings define', in effect, three-walled ,rearwardly open'hoppers.

"It will be:noted 'fromiFigure '3, that the front.

edgeiof the conveyer6'4- is'of arcuate outline in plan View, its arc being the are described by the. fre'eendof the cutterbar. When an arcuate out has been made, therefore; and the increment removedithe front edge of conveyer 64 is adapted to conform closely to the new face. The mine fa ce may thus .be saidto constitute a front confining wall for chutes65and 66, the rear marginal portions of theschutesbeing upturned as at 65" and 66 toconstitute rear; confining walls. The apex of conveyer 64' lies beneath the lowest plane ofadjustmentiofzthe' cutter. bar, so as not to interferezwithsthei swinging movements of the lat- .Withthe' 'partssin'the position shown particularly' in' Figure 3'; the transverse conveyer 64 andthe ends of therlongitudinalconveyers 29 and 30 may be assumed to be substantially against the,

mine facein advance of: the machine. The cutter bar is angled as has been previously described and'the machine advanced to sump it in the face.

Duringthis operation, the conveyers remain stationary, brackets23, 24 and25, 26 sliding along the rods 27 and 28 respectively. As the cutter bar'is inserted; thecuttings carried out by the bits'will be delivered to the end of conveyer 29 by the vhopper like arrangement at the lower end of: chute 65,-the cuttings being moved along conveyor 29 andb'eing deposited in the mine car through chute 56. When the sumping operation is-com'pleted, brackets 24 and 26 will have ad- Vanced to a position in contact with or adjacent brackets 36 and40. The cutter bar is now swung across the face and as it moves, cuttings are eventually passed to chute' 6'6 and the hopper-like arrangement at its lower end to be guided into the end of conveyer 30 for transfer rearwardlyby the latter'end through chute63 into the mine car. It will thus be evident that throughout the cutting operation the great majoriy of the cuttings will fall upon the conveyers to be removed thereby, so that when the kerf has been cut and the machine moved backthe face is ready to be shot without the preliminary ofshoveling the slack aside. Chute portions 65 and 66 catch the cuttings between the longitudinal conveyers, extensions '75 and 76,. catch the cuttings at the ends of the longitudinal conveyers, and wings 77 and 1 ,986,596 e of the? veyer 64 isdisengaged from thetroughside walls 331 and 3'7 and the troughs are then swung upwardly about the pivot rods to brin'g thet'r'ough bottoms into substantially transverse vertical position. As has been shown in Figure 2,- in

transportation, the troughs occupya'isomewhat staggered relation so that the rear end portion of one lies somewhat forward of -the rear endi portion of the other so as not tointerfere therewith, chutes 56 and 63 being removed. With the compared ture except as in the following claims.

A troughs inthis position, a link 72 is engaged with rings as at '73 and '74 attached to respective side'- wall reinforcing brackets to hold the conveyors in transporting position. It willbeunderstood that when the troughs are swung upwardly,- the supporting pedestals" therefor gravitate Eiiito a vertical'position close to the troughbott'oms so as to be out of the way. The transverseconveyer 64' maybe folded and placed many "convenient location on the machine for transportation.

- 'Two longitudinalconveyers are preferably, although not necessarily provided. The use of two;

however, gives a balanced'maohineand also proI-p vides convenient means for-supporting both ends of the transverse conveyer: While the transfer conveyer has been shown as being constituted by two chute portions, it is to be understood that I do not limit myself to i this type of conveyer. In the use of a chute conveyer; it ispreferable to construct the conveyer in the formof an' inverted- V, as shown, since *thus fairly steep inclines tare maybe constituted by steel plates andhencevas to a mechanical conveyenare' cheaply constructed and easily handledi 1 it It will be evident that the invention is that;

of embodiment without departure fr-omits scope; in forms other than that 1 shown and described and, consequently, I do not limit myself to struc- I cla jmf a n u \Q; I

1.. The combination witha mining machine, said machine comprising a supportmovabl'e toward a mine face in a rectilinear patlfsubstan tially normal'to the face, a kerf cutter projecting forwardly of the support to beinserted' in the face upon such movement of i the support; and ,means for moving the cutter horizontally across .the; front of the machine while inserted-in the face, of-a conveyer extending transverselyin front of the machine below the cutter andviolisposable against the face andcomprising a plateadapted to receive the cuttings from the cutter, a sup-. porting connection between the conveyer and ma s chine permitting movement of the support towardand away from the conveyeryand nieans for receiving material from the conveyer: and'transfere. ring-it rearwardlyof the machine.

2. The combination with a mininginachine,

said machine comprising a support'movableqtoward at mine face in a rectilinearpathsubstantially normal to the face, a kerf cutter-projecting forwardly of the support'to be inserted in th'ef faceupon such movement of the sup-port; and

means for moving the cutter horizontally across, the front of the machine while inserted" in the A face,f a conveyer extending transverselyinfront securable with a small overallheight. The chutes of a conveyer extending longitudinally of theinachine, a supporting connection between the conveyerand the machine permitting relative move ment of the support "longitudinally of the iconveyer, and a transverse conveyer at the receiving end of the first'mentioned conveyer and adapted to deliver to the latter, said transverse conveyer being disposable against the mine face beneath thec'utterand comprising a plate adapted to receive 'the-euttingstherefrom, 1

Thecombination with a mining machine,

said machine'comprising a support movable with themachine toward a mine facein a rectilinear path-substantiallynormal to the face, a kerf cutter projectingforwardly of the support to bein-x started in the face upon such movement of the supportja'ndmeans for moving the cutter'horizona tally across the front of the machine while insertedin the face; of alconveyer extending longitudinallyof the; machine and having a sliding connection withthemachine to permit relativei away-" fror'n theconveyer; and a second conveyer extending longitudinally of the machine in re-- movement'of the machine longitudinally :ofthe conveyer, and atransverse conveyer at-"thesreceiving end; of the first: mentioned conveyer and adapted to "delivergtothe latter, said transverse conveyer being disposable against'themine face bneaththe cutter: to receive thecuttings theret- 5i The combination with a mining machine, said machine comprising asupport movable? to,-' ward a' mine" face in a rectilinearpath substantially normal to therface,1a;kerf cutter projecting forwar'dly of thsupport to be inserted in the-face upon such movement of the support, and means forximoving the cutter; horizontally across the front of the machine whileinserted in ,the face, of a :pair of conveyers extending, longitudinally of thei r'nachine one "at each sidefthereof andrelativetto which the machine is longitudinally movable, and a, transverse conveyer supported at the forward ends of said first mentioned conveyers'andradaptedto deliver to both-of the latter, said transverse conveyer: being disposable against the mine face beneath the cutter to re; ceive' the cuttings therefrom. j i 1x16. The combination with a'mining machine, said machine comprising a support movable toward a-mine face in a rectilinearpath substantially normal to the face, a kerf cutterprojecting forwardlyof the support tobe inserted in the face upcnsuchmovement ofthe support, and means for moving the cutter horizontally across the front of the machine-while insertedin the face, of a pairof conveyers extending longitudinally of the,

machine one ateach side thereof and relativeto which the machine is longitudinally movablaand a, ftranS /Terse conveyer comprising end portions" downwardly inclined from its central portion sup- DOItBdj at the forward ends of said first mentionedconveyers and adapted to deliver to both of the latter, said transverse conveyer being disposable against the mine facebeneath thecutter, to

receive the-cuttingstherefromQ i a it T wc m ns hny h1 ,m i e mas i g! saidmachine comprising a support movable toward a mine face in a rectilinear path substantially normal to the face, akerf cutter projecting forwardly ofthe support to be inserted in the faceiupon such movement of the support, and means'for moving the cutter horizontally across the front 'ofthe. machine while inserted in the face; of a'pair of conveyers extending longitudinal y. of the machine one at each side thereof ward amine face in a rectilinear path substantiah 1y normal tothe face, a kerf cutter projecting forwardly of the support to be inserted in the face/upon such movement .of. the support, and means for moving the cutter horizontally across the front of the machine while inserted in the face; of a pair of conveyors.extending-longitudinally ofthe machine one at each side thereof and relative to which the machine is longitudinally movable, anda. transverse conveyer comprising chutes arranged substantially in the form of an inverted V supported by the first mentioned conveyers at 'their forward ends to deliver to the latter, saidtransverse' conveyer being disposable against the'mine face beneath the cutter'to receive thecuttings therefrom.

-9.- Mechanism of the classdescribed comprising a movable base,-.a conveyer comprising an elongated horizontally extending trough, material transporting means operable'in the trough, motor means for driving said material transporting means, and hinge means-slidably connecting the troughadjacent one side thereof to one side-"of the base whereby the trough is slidable with respect'to :the base and is swingable from an'operative position in which the. trough bottomis transversely substantially horizontal to a transporting position in which it is transverse- 1y substantially vertical.

.10. Mechanism of the class described comprising a movablebase, a conveyer comprising an elongatedlhorizontally extending trough, hinge means connecting the trough adjacent one side thereof to' one side of the base whereby, the trough is swingable from an operative position in'which the trough bottom is transversely substantially" horizontal to. a transporting position in which it is transverselysubstantially vertical,

and a pedestal hinged to the underside of the trough for engagingan external supporting sur in which the trough bottom is transversely sub;

stantially horizontal to a transporting position in which it is transversely substantially vertical, the rear end of the trough being upwardly and rearwardly inclined relative to the forward por tion when in operative position, and a drive metorfor S id transporting means carried by said trough beneath its inclined rear end.

12, Mechanism of the class described comprising a movable base, a conveyer comprising anelongated horizontally extending trough, ,a hinge rod extending longitudinally of the trough adjacent one side. thereof and connected thereto, and brackets on the movable base oscillably and slidably supporting saidrod whereby the trough is swingable from anoperative position in'which a longitudinally extending axis and slidable rel-- ative thereto along said axis, the useful swinging range-of the trough being from an operative position in which the conveyerbottom is transversely substantially horizontal to a transporting position in which it is-transversely substantially vertical. 114. Mechanism of, the class described comprising a movable base, a conveyor comprising an elongated horizontally extending trough, and

hinge means connecting the trough adjacent one.

side. thereof to one sideof the base whereby,

the trough is swingablefrom an; operative po-.

sition in which the trough-bottom'is transversely substantially horizontal to a transporting posi-, tion in which it is transversely substantially vertical, said trough comprising a portion inclined a upwardly and rearwardly when the trough is in operative position and which lies rearwardly of the base when the trough is in transporting position.-j.l.=

1 15. Mechanism of the 'class described comprising 'a movable base,-a conveyer comprising an elongated horizontally extending trough, and means connecting said trough and base whereby the latter is swingable relative to the former about a longitudinally extending axis and slidable relative thereto along said axis, the useful swinging range of the trough being from an operative position in which the conveyer bottom is transversely substantially horizontal to a transporting position in which it is transversely substantially vertical,

said trough comprising a portion inclinedupwardly and rearwardlywhen the trough is in operative position and which lies rearwardly of the base when the trough is in transporting position. i

.16. The combination with a mining machine, said machine comprising a support movable toward a mine face in a rectilinear path. substan-. tially normal to the face, a kerf cutter projecting forwardly of the support to be inserted in the face upon such movement of the support, and means for moving the cutter horizontally across the front of the machine while inserted in the face, of a yconveyer comprising a pair of chutes arranged in substantially the form of an inverted V and extending transversely in front of the machine below the cutter and disposable against the face to re--, ceive the cuttings from the cutter, and a support-' ing connection between the conveyer and machine. permitting movement of the support toward and away from the conveyer. v

17; The combination with a mining machine,- said machine comprising a support movable'toward a mine face in a rectilinear path substantially normal to the face, a kerf cutter projecting forwardly of the support to be inserted in the face.

"supporting? said' r'ods whereby the troughs are upon such movement of thesupporaandmeans for moving the cutter horizontally across the 'frontof the machinewhile inserted in the face, of

a conveyer comprising a pair of chutes arranged "infsubstantially the form of an inverted V and extending transverselyjin front of the machinebelow the cutter and disposable against the face to receive the cuttingsfrom the cutter, a supporting connection" between the conveyer and machine permitting movement of the. support toward and path substantially normal to theface, a kerf cutter projectingforwardly of the support to be inserted in theface upon suchm'ovement of the sup port, and means for moving the cutter horizontally across the front of the machine while inserted in the face, of a pair of conveyers comprising elonsubstantially vertical, and a transverse conveyer disposable against the mine face below the cutter to deliver the cuttings to both of the first mentioned conveyers when the latter are in operating position. 1 j

19. The combination with a mining machine,

said machine comprising a support movable with the machine toward a mine face. in a rectilinear path substantially normal to the face, a kerf cutter projecting forwardly of the support to be insorted in the face upon such movement of the support, and means for moving the cutter horizontally across the front of the machine while inserted in the face, of a pair of conveyers comprising elongated troughs extending longitudinally of the machine one at each sidethereof, hinge rods extending longitudinally of the inner edges of .the troughs and connected thereto, brackets on the machine oscillably and slidably supporting said rods whereby the troughsxare swingable from operating positions wherein their bottoms are transversely substantially horizontal to transport- .ing positions wherein the bottoms are transversely substantially vertical, a transverse consaid machine comprising a support movable with the machine toward a mine face in a rectilinear path substantially normal to the face, a kerf cutter projecting forwardly of the support to be inserted in the face upon such movement of the support, and means for moving the cutter horizontally across the front of the machine while inserted in the face, of a pair of conveyers comprising elongated ,troughs extending longitudinally of the machine one at each side thereof,

hinge rods extending longitudinally of the inner edges of the troughs and connected thereto, brackets on the machine oscillably and slidably conveyers. Q 1 it A? 21. A receiver for the cuttings of la swingable swingable from operating positions wherein their bottoms are transversely substantially horizontal to: transporting: positions wherein'the bottoms are transversely substantially vertical, a 'trans- A.

verse conveyer comprisinga pair of chutes I arranged in substantially the form ofan inverted V disposable against; the mine face 1 below the cutter to deliver the. cuttingsto the first men- :tionedxconve'yers when the latter: are in operating position, (and means for. supporting the. lower portionsmof said. chutes on 1 the first mentioned cuttenmining machine operated on the arcwall system,-said receiver being constitutedbyv a conveyer adaptedtoibe positioned across and;'against the face inafront of the machine and below the cutter, said conveyer having an, arcuate forward edge. substantially conforming l to the outline of the face and having a delivery direction transverse to the longitudinal axis of the machine to deliver cuttings to the side of the machine.

22. A receiver for the cuttings of a swingable cutter mining machine operated on the arcwall system, said receiver being constituted by a conveyer adapted to be positioned across and against the face in front of the machine and below the cutter, said conveyer having an arcuate forward edge substantially conforming to the outline of the face and having a delivery direction transverse to the longitudinal axis of the machine to deliver cuttings to the side of the machine, and a hopper formation at its delivery end.

23. A receiver for the cuttings of a swingable cutter mining machine operated on the arcwall system, said receiver being constituted by an inclined chute adapted to be positioned transversely against the face in front of the machine and below the cutter, said chute having an arcuate forward edge substantially conforming to the outline of the face and having a delivery direction transverse to the longitudinal axis of the machine to deliver cuttings to the side of the machine.

24. A receiver for the cuttings of a swingable cutter mining machine operated on the arcwall system, said receiver being constituted by an inclined chute adapted to be positioned transversely against the face in front of the machine and below the cutter, said chute having an arcuate forward edge substantially conforming to the outline of the face and having a delivery direction transverse to the longitudinal axis of the machine to deliver cuttings to the side of the machine, and having hopper defining walls at its lower end.

25. A receiver for the cuttings of a swingable cutter mining machine operated on the arcwall system, said receiver being constituted by a chute in the form of an inverted V adapted to be positioned across and against the facein front of the machine with its apex below the cutter, said chute having an arcuate forward edge substantially conforming to the outline of the face.

26. A receiver for the cuttings of a swingable cutter mining machine operated on the arcwall system, said receiver being constituted by a chute in the form of an inverted V adapted to be positionedacross and against the face in,

front of the machine with itsapex below the cutter, said chute having an arcuate forward edge substantially conforming to the outline of the face, and means pivotally connecting the means operabi'e in the: troughs to move material -rearwardly ineach-trough, motor means-for driving usaid transporting 'means, and receiving conveyor at ":the :front of the machine adapted twdeliver' to b'oth of said conveyer troughs, said receiving conveyer being supported by said troughs," sai'dtroughs having. support external bf the; machine 'and'the machine being movable relativeto the troughs longitudinally thereof. I "28::Inva 'machine. of the classdescribed, a

, Wheebmounted basestructure, -'conveyer troughs extending *iongitudinally bf said base "structure one "at each I side "of the Flatter and supported thereby for swinging movement about longitudi- 1118.1 axes, -mat'eria1.:transporting -means' operable in the troughs' to move {material rearwardly in each trough; motor means for driving said transporting means, and. areceiving conveyer at the 1 front of the machine adapted to 1 deliver to both of saidzconveyertroughs. Q 1 V 29. In a machineof the-class described, a wheel mounted base structure, conveyer troughs extendingx'longitudinally or-said base structure one .at'each-side of the latter andsupportedthereby for swinging movement "about longitudinal axes, material -tr'anspor'ting means operable in the troughs to 5 move material rearwardly in each,

troughjmotor means for drivingsaid transport- 'ing*means,-and a receiving conveyer at the-front of the machine adalptedto deliver to both-of-said 5 cohveyer troughs and for longitudinal ment or "the machine relative thereto.

7 GEORGE-B. NORRIS.

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