US2448057A

US2448057A - Cuttings conveying mechanism

Info

Publication number: US2448057A
Application number: US505609A
Authority: US
Inventors: Leon E Simmons
Original assignee: Joy Manufacturing Co
Current assignee: Joy Manufacturing Co
Priority date: 1943-10-09
Filing date: 1943-10-09
Publication date: 1948-08-31
Anticipated expiration: 1965-08-31

Description

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Leon- Patented Aug. 31, 1948 CUTTINGs CONVEYING MECHANISM Leon E. Simmons, Claremont, N. H., assignor to v Joy Manufacturing Company, a corporation of Pennsylvania i Application October 9, 1943, Serial No. 505,609

This invention relates to cuttings conveying mechanism, and more particularly, but not `exclusively, to improvements in a cuttings'conveying mechanism especially designed for use with a room and pillar type coal cutting machine.

Modern high-speed coal cutting machines of the room and pillar type have 'a relatively large cutting capacity, and during the kerf cutting operation a relatively large quantity of cuttings, created by the cutters of the cutter chain, accumulate so rapidly at the rear of the cutter bar that it is practically impossible for the shovelers to remove them. The cuttings, therefore, pile up rapidly around the rear end of the machine in such a manner as to reduce the cutting eiilciency and to hinder proper setting of roof props. Known attempts have been made mechanically to remove the cuttings `from the vicinity of the cutter chain of a room and pillar coal cutting machine, but such mechanisms are relatively bulky, greatly increase the longitudinal dimension of the machine, preventing close setting of roof props, and, due to their designare relativelyl noisy in operation and create considerable 'objectionable dust.

1t is an object of the present invention to provide an improved cuttings conveying 'mechanism especially designed'for use with a modern highspeed room and pillar coal cutting machine for overcoming the disadvantages of conveying means of known types. It is 'another object to provide a cuttings conveying mechanismv of relatively large capacity and which is comparatively noiseless in operation and creates a minimum vof dust. A further object is to provide an improved cuttings conveyor mechanism of comparatively large capacity which is exteremely compact. Still another lobject is to provide an improved cut- 12 claims. (C1. 2oz-sm coal cutting machine with a minimum of modification of themachine. Other objects and advanf. tages of theinvention will, however, hereinafter more 4fully appear.

In the accompanying drawings there is shown for purposes of illustration one form which the invention may assume in practice.

lIn thesedrawings: l

Fig. 1 is a plan View of a coal cutting machine with which an illustrative form of the improved cuttings conveying mechanism is associated.`

Fig. 2 is a side elevational view of the co'al cutting machine and conveying mechanism shown in Fig. 1. l

Fig. 3' is an enlarged rear end elevational view of the cutting machine and conveying mechanism shown in Figs. v1 and `2, with the upper portion of the machine broken away to facilitate illustration.

Fig. 4 is an enlarged lcross sectional view taken substantially on line 4-4 of Fig. 6.

Fig.`5 is an enlarged view in longitudinal vertical section taken substantially on. line 5 5 .of Fig. 1.

Fig. 6 is an enlarged horizontal sectional view taken substantif-.my on une s-s of Fig. 2.

Fig. '1 is` a`ho`rizontal sectional View taken sub-V stantially on line 1`1 of'Fig. 5, with parts shown in a different position;

Fig. 8 is a horizontal sectional view taken`sub-- stantially on line 8--8 of Fig. 5. l 1

Fig. 9 is a detail sectional view taken substantiallyon line 9-9 of Fig. 5.

Fig. 10 is adetail sectional view taken substantiallyon ,liney inf-I0 of Fig. 6.

tings conveying mechanism adapted for attachi ment to a conventional coal cutting machine and adapted to be driven by the machine motor.` A still further object is to provide an improved cut` tings conveying mechanism embodying coacting conveying devices which serve tornove relatively large'quantities of cuttings from the vicinity of the cutter chain. Yet anotherobject is to provide an improved cuttings conveying mechanism embodying a pair of coactlng conveying devices arranged in parallel relation on upright axes at the rear end of a roomand pillar coal cutting machine, and which serve to gather the cuttings and move Aand eject them rearwardly with respect to the machine. Still another object is to'provlde an improved cuttings conveying` "mechanism which gnay be' readily applied to a conventional Fig. l1 is a fragmentary side elevational view, showing the cuttings-conveying mechanism detached from the coal cutting machine.

` Fig. 12 is a `view similar to Fig. 7 on a reduced scale, showing the eccentric gathering Portions arranged so as to traverse their cycles oppositely but instep.

`Inj this illustrative embodiment of the inventionthe improved cuttings conveying mechanism, generally designated I, is associated'with a coal cutting machine of the iiexibly fed, room and pillar, iioor cutter type, generally designated 2.' `The coal cuttingmachine shown is of a conventional design and may be similar` to that. disclosed in Patent No. 2,131,178 patented Sept. 27,1938, in which I am one of the joint inventors Evidently, the improved cuttings conveying mechanism may be associated with coal cutting machines of other types.V i

The coalA cuttngmachine 2 as disclosed herein,

comprises a machine frame 3 mounted on a bot-` anche# tom plate or shoe i slidable on the floor of a mine. Extending longitudinally throughout the length of the lower portion of the machine frame is a chamber 5 having arranged therein and secured to the machine frame, the rearward portion of an elongated horizontal plane cutter bar S, the latter having guided on its margin for circulation thereabouttanfendless cutter :chani'L A'I'.he ilexiblefeeding means .of the machinermaysccmprise feeding and controlling

drums

8 and 9 arranged at the opposite sides of the machine frame and respectively having wound thereon feeding and controlling cables I and Il. l Garriedby the machine frame is a motorilzhaving its ypower shaft operatively connected `to;tl 1ec'utter chain and to the feeding and controlling drums for effecting drive thereof. As shown in Fig. 14 of the patent above referred tofthe *motorrpower shaft is connected through spur and beveLgearing to a vertical shaft and a corresponding shaft is. .herein designated I3.' (Eig. 6) and is v keyed to a.v chain sprocket le arrangedinjthe' chamber 5 and engaging and'drivng theieridless cutter chain 1. As shown in"Figs.' 14 andj15 offthefpatent above referred to, the motonpower.' 'shaft isoperativ'ely'connected' through. spun andi bevel gearings to the feeding. and controlling drumsftoieb fect independent 'drive of 'thelflattergateither relatively high or relatively low ,cable' Winding peeds. .nFig. 5 herein. a, 1;iortion` of the high and low` speedeearlngsffor Vone ofthe drumsl is shown. "AV highisped rgear is .connectiblel by a'multiple "diskclutch loto alho'rizontal Vshaft 1'1 which extends longitudinally of' the machine and is suitablyjournaled in .the machinaframe. Driven'by this '"shait is a worm I 8 meshing. .with aworm' wheelA I'Q whichis connectible` by amultiple disk. clutch.` 2 El to. ai horizontal transversely extending shaft"2i, the'. latter being ,operatively connected to 'oneioflthe cable.windi1 1g idr-ums, hereinthe controllinggdnum's.

lowsspeedgear

2,2,coaxiall withv the; gear 5,"..is connectibljbya multiple fdisk `clut`ch"23 to the shaft "l1, T'Ihe clutches land 23 have suitable operating means so that when .one gof them islappliedthe otherl is released. It isaccordngly evidentthatithe worm shaft" Il.V may ,be Idriven,selectively, at high and low speeds through the gears. Ii5 .and :2 2.

The feeding. and, controlling cab-les I' (and ll ling drums 8, and El aroundhppropriately llocated guide sheaves on the' machine in aconventonal manner andmay be connected at theirfree ends to'suitable anchor jackswlocated at ,the yib.' and face of the room of a mine. l'ilhecutten chain" 1 when, .connected in driving relatonwiththem'otor may be rapidly circulated 'about `.the- ;margin of thecutter' bar, an`d, .as the .cables areywound in by 'the motordrivendrums the cutter bar may be sumped beneath ,the coal ,at l.one, rib,. .there after befed transversely across the coalrfacerto cut a horizontal kerf beneaththe coa l, !and}na`lly be 'withdrawn from 'the4 face vatjthe, opposite rib. Thejl fee-ding drum effectsA feed of the. machine andthe controlling .drum controls theangle of the machi-newith respect tothe, coalfaceduring. the' kerf cutting operation in the manner well known to those skilled'in the art. Duringthe kerf cutting operation, the cuttings createdby the Y`cutters of the cutter. chainare carried' back from' thel kerf through the chamber extending throughz'the lower portion of the machine'frame for "discharge at the rear end of the machine. Since the mode, of operationjoia room-andpil-lar coalcuttingmachine of thev type` ldisclose d iswell vicinityof the ycutter chainiat the-rear end of the ,chainberfii :and conveyr the :cuttings to discharge rearwardly of the machine out of the machine path. Now referring to the specic structure of the cuttings conveying mechanism, it will `lrbe noted that'- arranged in a casing 25 are coacting conveying devicesY 26 and 21 herein preferably arrangedinrparallel offset relation on upright axes. vf 'llhefaxes vof the conveyor devices lie in a common transverse vertical plane, as shown in Figs. "f6 and 7. These conveyor devices are arranged in a horizontal chamber 28 in the casing 25 and when the conveyor casing is attached to thecutting machine in themannerrshowmithe `'cha'n'iber2 8 communicatesjdirectly with lthe,A rear endjf "thej'chamber' so'fthat'` the Cuttings moved rearwardly "by L'the i cutter chain 'are discharged into "the casing chamber. "The conveyor devices 26 and"2'l` preferably revolve'in relativelyopposite :directions andI each comprises a flathorizont'al circular disk or plateZSA arranged with its bottom surfacesubstantially'flushzwith 'thecasing bottom and havingan' upstanding portion $30, cylindrical V'except as later "described ;andifillustrated, larrangs-:fd eccentrlcallyrwlth respecttoithe axis .of rotationof'thedisk. ".*Ihebolttom ofjfthe conveyor casing is .'jcut away V.in termediate Lfthe disks at' its rearward' portion. 'As shown 'nFig- 5, 1`eawhj'disk" has j coaxialj lower arid; uppershaft portionsil and 32 suitablyjournaleldrwthingthe conveyor casing. The eccentric portion`3 ll of veach disk 'is arcuately cutaway or recessedatatits Oppositesides. to providea relatively narrow vertical 'gathering portion'34, and formed above .this recessedjportion isa circular bearing, portion 34' surrounded by anannularstrap35. "This strap isfmountedor oscillatory-movement .with respect totheidisk-eccentric and has projecting lugs"36 to which a/pusher arm 31 isvv pivotallyconne'cted at 4l`38. Thisjpu'sher `arm is, pivotaily mountedat 39 on i a vertical pivotj pin "4 El. supported by l'the conveyorcasing at one side. ofthe latter. Vlll/Iounted; on*` a; pivot pinll IE providing-l` the pivot'38; is;a scraper shoe S42 which. extends vertically of ,the eccentric-recesses and, s 1idin gly engages, a circular portion-` 43 at the :bottom of 4lthe,eccentric. As the cuttingsaremoved; into`. the .casing.. chamber'LiZB'jby' the, cutter chain, they...are receivedby theldisksan'd as; the. latter, revolyelthe. eccentric gathering portionslBll ofthedisks engagethecuttingsfarid movejthem. rearwardlywithin-,the casing chamber'. arid` the.y cuttings so.. .moved..are de iiectedby'the 'shoesAZ towardthepusher armsfSl and `the lattenl positively. eject.. the cuttings, lrearwardly Ifroml the` casingchamber. Iteis @accordingly ,evident lthat..the .cuttings-,are :continuously gatheredr conveyed .and Aejected rearwardly-of. the conveyor. casing with the;v creationof: aminimum of dust 'and comparatively noiselessl I'The conveyor. casing ,has tsbottom Vsection -.at tached., byscrewslar to. the rearend,4 offtheflmachine `frameof the cutting.. machine andinasl lip portions` or; feet.` 44 ,-over lyingandY resti-ng onf the bottom. of. the. skid. plateof.the ,machines-and' the conveyor..casing .isffsuitablyf fittedto the; reen-end of. the machineiman extremely compact `zmanner. An :upper gear housing 4 Seis: releasably-fattached to rvthe ...bottom casingisection by screws-=46 -y and this housing may be readily detached to obtain access to the internal mechanism. VArranged between the gear housing and lthe bottomv casing section is a horizontalcover plate 41 held into position by screws 48and which may'also-be readily removed.

The conveyor driving means may assume various forms and herein comprises a shaft 50 (Fig. extending centrally through a I bore in the Worm shaft l1 and keyed at its forward end to a shaft 5| in turn keyed to the hub of the gear l5 and driven by the latter. The shaft 50 is clutched at 52 at its rear `end to the hub of a cone 53 of a frictional cone clutch. The cone 53 is held by a spring 54 in frictional engagement with the walls of a conical bore 55 formed in a clutch member 56. This clutchmember is suitably journaled within themachine framepand has its hub clutched at 51 to a horizontal longitudinally extending shaft 58 herein having its rearward portion enclosed within a tubular housing 59 suitably detachably secured at its inner end to the rear end of the machine frame. The rear end of the tubular housing 59 is provided with an annular portion which is slidingly received Within a bore 60 in the gear housing 45 of the conveyor. The vrear end of the shaft 58 is suitably journaled within the gear housing 45 and has formed thereon a bevel gear 6l meshing with a bevel gear 62 having its hub keyedto a clutch member 63 journaled on a bearing sleeve supported by a vertical shaft 64. The shaft B4 is journaled within the gear housing 45 and has splined thereto at 65 a shiftable clutch member 66 having clutch teeth engageable with clutch teeth on the clutch member 63. Engaging the clutch member 66 is a shipper yoke `61 having a suitable operating handle 68 (see Fig. 9). It is accordingly evident that when the clutch 66 is connected the gear 62 is in driving relation with the shaft 64. The splined connection at 65 between the sliding clutch and the shaft is herein in the form of a spring pressed pawl 69 mounted on the shaft 64 and engaging with a notch 'Ill formed on the clutch hub so that the shaft is driven by` the bevel gear through this pawl. Formed on the lower portion of the vertical shaft 64 is a spur gear 1I meshing with a spur gear 12 having its hub keyed at 13 to the upper shaft portion 32 of one of the revolving disks.

The key connection between the gear hub and the hub portion 32 includes a segmental block 14 having a plane surface abutting a plane surface on the shaft portion and having a vertical key slot for receiving a key 16. The gear hub is also slotted to receive the key. As'shown in Fig. 8 the gear l2 meshes with and drives a spur gear 11 which meshes with a spur gear 18, the latter in turn meshing with and driving a spur gear 'I9 having a key connection at 85 similar to the key connection above described, withl the upper shaft portion of the other revolving disk.v It is accordingly evident that the conveying disks may be driven through the spur gears 1|, 12, 11, T8 and 'i9 at the same: speed in relatively opposite directions.

In the event that it is desired toreverse the direction of orbital movement of the cutter chain during the kerf cutting operation, the pawl E9, shown in Fig. 9, slips out of the notch 10 disconnecting the conveyor devices from the machine motor. Thus, the pawl prevents reverse rotation ofthe conveyor devices thereby eliminating the possibility of the devices becoming clogged and jammed' when the cutter chain is reversed. The frictional'coneclutch, in the conveyor drive, is set at a predetermined load to slip automatically in the event that the conveyor devices become overloaded thereby to prevent damage to the parts.

Thel disks 29 are so set in assembling the device that a relatively wide space will be insured above the disks between the eccentrics, thereby enabling large pieces of coal or other material to be ejected from the casing chamber. In other words, the arrangement is such that the portions 34 can never both be pointing directly towards the other at the same time, but instead there is always between them a space at least approximately as wide as the length of either of them between its axis of turning and its radially outer end. The gathering ec-centrics, as the disks revolve, serve to move the cuttings rearwardly within the casing chamber, and the cuttings are moved by the eccentrics from one disk towards the other, and the pusher arms 37 which receive the cuttings serve to push the cuttings rearwardly from the disks positively to eject the cuttings from the casing chamber at the rear end of the machine.

AIt will be evident that instead of arrranging the disks with their eccentric gathering portions so that they move as above described, the same may be arranged, as shown in Fig. 12, so that they move in such a manner, as to traverse their cycles oppositely but in step, passing through their points of closest adjacency to each other at the same time. The conveyor mechanism may be readily detached from the coal cutting machine simply by removing the screws 43 and moving) the conveyor mechanism bodily in arearward direc-` tion into the position shown in Fig. l1, the drive connections between the conveyor devices and the machine gearing releasing automatically at the clutch v5l as` the conveyor mechanism is so moved. As the conveyor mechanism is moved rearwardly the annular portion of the tubular housing 59, is

separated from the bore 60.

As a `result of this invention an improved cuttings conveyor mechanism is provided which overcomes the disadvantages of known `types of cuttings conveyors. It will be noted that'by the provision of coasting conveyor devices arranged and operating in the manner disclosed, relatively large quantities of cuttings may be conveyed from the vicinity of the cutter chain of a modern high-speed coal cutting machine. It will also be evident that by the provision of the coacting conveyor devices. it is possible not only effectively to remove large quantities of cuttings from the machine,` but also relatively large pieces of coal or other material may move freely past the conveyor devices without jamming. The conveyor devices, due to their design will operate relatively quietly, and create comparatively little objectionable dust, and be extremely compact enabling relatively close setting of roof props. By the provision of the ratchet drive for the conveyor deviceathe latter are automatically disconnected from the machine motor in the event the cutter ch-ain is reversed, thereby to prevent possible damage to the conveyor mechanism. Other advantages of the improved conveyor mechanism will be clearly apparent to those skilled in the art.V

While there is in` this application specifically described one form which the invention may assume in practice, it will be understood that this form of the same is shownfor purposes of illustration, and that the invention may be modified and embodied in various other forms without ldeparting from its VVspirit 'or l the 'scope y"or vthe appended claims.

`WhatI claim as newand desire. to secure by Letters Patent is:

1. A cuttings-conveying 'mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf-'cutting devices guided for circulation in a cuttings-receiving chamber within the frame of the machine, comprisinga casing attachable to the machine frame of the coal cutting machine and having a Vchamber for receiving the cuttings brought'backffrom the kerf by the cutting devices and discharged from said machine-frame chamber, and cuttingsmoving and ejecting means in said casing chamber for moving the cuttings rearwardly therein and for positively ejecting the cuttings therefrom, saidl moving and ejecting means includinga'cuttings-moving member movable orbitall-y in said casing-chamber'about an upright axis, a horizontally swingable cuttings-moving `and ejecting element associated with said member and pivotally mounted -at' one end on said casingvat-one side of the latter 'and pivotallyy connected at its opposite end to said cuttings-moving member and means for rotating said member and for swinging saidv element horizontally back and forth on its pivotal mounting for causing said member to move the cuttings horizontally and rearwardly in said casing-chamber andsaid element to receive the cuttings :from said member and move the `cuttings rearwardly in and eject the cuttings so moved from said casing-chamber.

2. A cuttings-conveying mechanismadapted for association -with a coal cutting machine of the kindI having orbitally moving kerf cutting'devices guidedfor circulation-in said cuttings-receiving chamber within the frame of the machine, 'comprising a casing attachabie to the machine frame of the coal cutting machine and havinga chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from said machine-frame chamber, and cuttingsmoving and ejecting means in said casing-chamber for moving the cuttings rearwardly therein and for `positively ejecting the cuttings therefrom, said moving and ejecting means including a horizontal table arranged at the bottom of said casing chamber ior'rotation about an uprightaxis, a cooperating horizontally swingable arm disposed above said table andpivotally mounted on said casing'at one side thereof and means for rotating said table for moving the cuttings received thereby rearwardly in said casing chamber. and for swinging said arm horizontally back and forth on its pivotal mounting for causing. said arm to receive the cuttings from said table and move the cuttings rearwardly in and eject the cuttings so moved from saidcasing-chamber.

3. A cuttings-conveying mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf cutting devices guided for circulation in a 'cuttings-receiving chamber within the frame of the machine, comprising a casing attachable to the machine frame of the coal cutting machine and having a chamber for receiving the cuttingsv brought back from the kerf by the cutting devices and discharged from saidmachine-frame chamber, and cuttingsmoving and ejecting means in said casing-chamber for moving the cuttings rearwardly therein and for positively ejecting the cuttings therefrom, said moving and ejecting means including a horizontaltabie disposed atthe .bottom ofvsaid cas- 8 'ing chamber fion rotationabout an upright axis for'receiving the lcuttings iandl havingfanupstanding `eccentric portion, -a 'cooperating horizontally swingable armtdisposedabove said tableand pivvotallymou-nted at onefen'd on said casing-ratione side of the latter and pivotally connected atits oppositeend to said leccentric portion,I and means for rotatingI said `table for causing'said eccentric portion lto y'move r the cuttings received thereby 'rearwardly in saidcasing chamber'and for swingi-n'gfsaid arm'horizontally"1 back andforthv on its pivotaimounting forvcausing said arm tol receive the'cuttings"moved'rearwardly kby said eccentric portion and move/'thel cuttings rearwardly in and eject the-"cuttingsl so ymoved'ffrom said casingchamber.

li4. A cuttings-conveying mechanism Iadapted vfor associationv witha-coaicutting machine of the y'kind 'having orbitally moving-kerf cutting devices `guided for `circulation "in 4a rcuttings=receiving 'chamber' within the frame of the machineycomprising 1a' casing attachable tothe' machine' frame of the coal cutting'machine' and havingiachamber for receiving vthe cuttingsl brought back from f the'kerfby-thecutting devicesandidischarged fromsaid-'machine-framechamber, andcuttingsmoving and ejectingy means in'said vcasing-chamber for movingthecuttings 'rearwardly .therein and forpositiveiy ejecting'the .cuttings therefrom, said moving and ejecting' means, including cuttings-moving and ejecting members pivotally mounted on said casing respectively atthe sides, thereof v'and projectingfhorizontally inwardly. toward the-opposite'sides oisaidcasing and means for swinging said.members'back.and forth on their pivotall mountings horizontally in out-of -step relation in'said casing-chamberfor .moving the cuttings rearwardlyA in iandejecting the .cuttings so moved` from said casing-chamber.

5. A cuttings-conveying.mechanism adapted for association with 1a coal'cutting 'machine of the Akind having orbitallymoving kerf cutting devices guided for -circulationin 1.a 'cuttings-receiving chamber withinltheframe of the machine, comprising a casing attachable to the machineframe ofthe coal cutting `machine'and havinga charn-l ber for receivingv` the' cuttings `brought backfrom the vkerf by the cutting devices and y"discharged from said :machine-frame chamber, and cuttingsmoving and ejecting means in said casing-chamber for moving the-cuttings rearwardly'therein and for y'positively ejecting the cuttings therefrom, saidmoving vand `eject-ing means including4 cuttings-gathering vmembers V arranged'gat the vbottom ofsaid casing-chamber' to' rotate about upright parall'elfaxes respectively at the'A opposite 'sides lof'saidcasing-chamber, cooperating cuttings-moving :and `ejecting elements lpivotally mounted on sai'dcasing respectively at the sides thereof'and operativelyconnected to said'gathering members;` fort-actuation in out-of-step relation thereby" and meansfor rotating said 'gatheringfmembers'v to moveI the cuttings Areceived thereby z--rearwardly inrsaidfcasing-chamber and to cause'rsaid; elements to swing back and forth in out-of-step relation on their pivotal mountings forl moving; the .cuttingserearwar'dly' in andejecting the'cuttingssozmoved fromsaid casing-chamber.

:6. A cuttingseconvevingi'imechan'ism` adapted for `*association Iwitira coal :cutting machine of thekind 4having orbitally moving .kerf cutting devices', guided forfaoirculationi4 in: a cuttings-receiving chamberL within :thef frame of the' ma.- chine, :comprising iawcasing .uattachable to Y:the

l9 machine frame ofthe coal cutting machine and having a chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from said machine-frame chamber, and cuttings-moving and ej eating means in said casing-chamber for'moving the cuttings rearwardly therein and for positively ejecting the cuttings therefrom, said moving and ejecting means including coacting relatively movable rotary conveyor devices arranged in spaced apart relation at the bottom of said casing-chamber to rotate about upright parallel axes at the opposite sides of said casing for receiving the cuttings, said conveyor devices having upstanding eccentric portions arranged to move horizontally in out-of-step relation and means for rotating said devices for causing saideccentric portions to move the cuttings received by said conveyor devices rearwardly between said devices insaid casing-chamber. Y

7. A cuttings-conveying mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf cutting devices guided for circulation in a cuttings-receiV- ing chamber within the frame of the machine, comprising a casing attachable to the machine frame of the coal cutting machine and having a chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from said machine-frame chamber, and cuttings-moving and ejecting means in said casing-chamber for moving the cuttings rearwardly therein and for positively ejecting the cuttings therefrom, said moving and ejccting means including a horizontal disk arranged at the bottom of said casing-chamber to rotate about an upright axis, said disk receiving the cuttings in said casing-chamber and having an upright eccentric portion for moving the cuttings rearwardly in said casing-chamber, a horizontally swingable pusher and ejector arm overlying said disk and pivotally connected at one end to said casing and at its opposite end to said eccentric portion and means for rotating said disk to cause said eccentric portion to move the cuttings received by said disk rearwardly in said casing and for swinging said arm back and forth on its pivot for causing said arm to receive the cuttings moved rearwardly by said eccentric portion and move the cuttings rearwardly in and eject the cuttings so moved from said casingchamber.

8. A cuttings-conveying mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf cutting devices guided for circulation in a cuttings-receiving chamber within the frame of the machine, comp-rising a casing attachable to the machine frame of the coal cutting machine and having a chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from said machine-frame chamber, and cuttings-moving and ejecting means in said casing-chamber for moving the cuttings yrearwardly therein and for positively ejecting the cuttings therefrom, said moving and ejecting means including a pair of horizontal disks rotatable in relatively opposite directions on upright parallel axes at the bottom of said casingchamber for receiving the cuttings, cooperating material moving and ejecting elements mounted on said casing to move horizontally above said disks and operatively connected to the latter for actuation in out-of-step relation thereby for receiving the cuttings from said disks and means for rotating said disks for moving the material received thereby rearwardly in said casing-chamber and for `causing horizontal movement of said elementsin out-of-step relation to move the cuttings receivedfrom said disks rearwardly in and eject the cuttings so moved from said casingchamber.

9. A cuttings-conveying mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf cutting ldevices guided forv circulation in a cuttings-receiving chamber within theframe of the machine, comprising a casing attachable to the machine irame of the co'al cutting machine and having a chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from said machine-frame chamber, and cuttings-moving and ejecting means in said casing-chamber for moving the cuttings rearwardly therein and forl positively ejecting the cuttings therefrom, said moving and ejes-ting means including a pair of horizontal disks arranged at the bottom of said casing-chamber to rotate in relatively opposite directions on par-` allel upright axes at opposite sides of said cas' ing for receiving the cuttings, pusher arms overlying said disks and pivotally mounted at one end on said casing respectively at the sides thereof and projecting horizontally inwardly above said disks toward the opposite sides of the casing and means for rotating said disks and swinging said arms horizontally back and forth on their pivotal mountings to move the cuttings received by said disks rearwardly in said casing-chamber and eject the cuttings so moved therefrom.

10. A cuttings-conveying mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf cutting devices guided for circulation in a cuttings-receiving chamber within the frame of the machine, comprising a casing attachable to the machine frame of the coal cutting machine and having a chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from sai-d machine-frame chamber, and cuttings-moving and ejecting means in said casing-chamber for moving the cuttings rearwardly therein and for positively ejecting the cuttings therefrom, said moving and ejecting means including cooperating horizontally movable conveyor arms mounted on said casing respectively at the sides thereof and projecting horizontally inwardly toward the opposite sides of said cas- 'ing and means for moving said arms horizontally in out-of-step relation for causing said arms to engage the cuttings and move the latter rearwardly and eject the cuttings from said casingchamber.

11. A cuttings-conveying mechanism adapted for association with a coal cutting machine of the kind having orbitally moving kerf cutting devices guided for circulation in a cuttings-receiving chamber within the frame of the machine, comprising a casing attachable to the machine frame of the coal cutting machine and having a chamber for receiving the cuttings brought back from the kerf by the cutting devices and discharged from said machine-frame chamber, `and cuttings-moving and ejecting means in said casing-chamber for moving the cuttings rearwardly therein and for positively ejecting the cuttings therefrom, said moving and ejecting means including .cooperating oscillatory conveyor devices mounted on said casing respectively at the sides thereof and extending horizontally in saidfcasngchamber. toward the oppositesides of the latter. rearwardly in andejectithe cuttings4 so moved from said casing-chamber.

12. A cuttings-conveying mechanism ladapted.

for association-With a coal. cutting` machine of the kind having orbitally moving kerf cutting devices guided for circulation in a.cuttingsfreceiv-A y ingv chamber withinthefframe -of themachine;

comprising a casingattachable to t'hemachine frame of the ycoal `cutting ,machine and .having ya chamber for receivingzthecutting-s Ibrought back from the kerf by the. cutting devices and dis.- charged from.. said vmachine-frame chamber, and

cuttings-.moving and ejectingmeans in said case ingfchamber for moving the cuttings rearwardlyl therein and for. positivelyy ejer-:ting the cuttings.

therefrom, said moving-V and ejecting means-in-v cluding. cooperatingy, oscillatory conveyor devices mounted yin Yspaced .apart relation 4respectivelyat thesides of said casing and. extending horizontally in .said casing-chamber. tow-ard the opposite sides of {saidcasing and means ,foroscillafting said` devicesfor causing the. same-to engage the. cut.` tings .andimove the .latter.rearvvardly.y through. the s 12 :spacebetween said'. devices and eject the cuttings so moved rearwardly from said casing out of the machine path.

LE'OIME.v .SIMMON S.

REFERENCES CITED The..ic'nllovving'sreferences4 areA of, record in the le' of this* ipatent l UNX'II'EDAl STATES PATENTS Number.: blame-l Date 1,409,695?l Erenchvy Mai-:14, 1922, 15,692,362 Pray; .Nov. 27,' 1928 1,752,714: lWilcox: Apr.y 1, 1930. 1386233@ McDermott .June 7; 1932 1,966,459 `Osgood July- 17, 1934 2,173,790:V Philip; .Sept, 19, 1939,: 2,278,119 Richards Mar." 31,' 1942 2,302,461: Richards'. v Nov` 17, 19112v 2,320,307 Saville May 25, 1943 2,322,815 Prayy June'22, 1943 2,329,0051-1 McCullough May 25, 1943 FOREIGN PATENTS Number..` Country; Date GreatxBritainl- Septy 29', 1932