US1662794A - Mining machine - Google Patents

Description

March 13, 192s.

/M. PMHOLMES MINING MACHINE Original Filed July 21, 1919 s sheets-sheet 1 IIA g i IIIIII YIIIII Inf/ff 'y hi l, kk

March 13, 1928. 1,662,794

M. P. HOLMES .MINING MACHINE Original Filed July 21, 1919 3 Sheets-Sheet 2 Ely-Z' March 13, 1928. 1,662,794 v l M. P. HOLMES MINING MACHINE Original Filed July 2], 1919 3 Sheets-Sheet 5 uw www.

Patented Mar. 13, 1928.

1,662,794 yUNITED STATES PATENT OFFICE.

MORRIS P. HOLMES, F CLAREMONT, ,NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION 0F MASSACHUSETTS.

MINING MACHINE.

Original application led July 21, 1919,

My invention relates to mining machines. An object of my yinvention is to rovide an improved mining machine. Anot er object of my invention is to provide an im-v proved mining machine of improved construction and one which is atthe same time more flexible in its operation and more conveniently controlled. A furtherobject of my invention is toy provide. an improved and simplified feeding mechanism fory such a machine, said feeding mechanism being operatively connected in an improvedmanner adapted to improve both the feeding and cut-ting operations. A still further object of my invention is to provide an improved mining machine adapted to be manufactured at a materially decreased cost and equipped with improved cooperating cutter drive, feeding, and truckV driving mechanismcooperating in an improved manner during cutting, feeding, or transport and controlled by improved controlling mechanisms. Still another object of my invention isto provide an-improved mining machine of ex- 4 25 ceedingly compact form wherein the feeding drums are disposed within the lateral limits of the machine frame.` These and other objects and advantages of my invention will, however, Vhereinafter more fully appear.

In the accompanying 'drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these drawings,--

Fig. 1 is a plan view of the mining machine, the feeding and controlling mechanism being shown in section.

Fig. 2 is a transverse vertical sectional viewk taken substantially on line 2-2 of Fig. 1.

Fig. 3 isa transverse horizontal sectional view taken Fig. 2.

Fig. 1 is a detail sectional view taken substantially on line 1--4 of Fig. 1.

Fig. 5 is a diagrammatic view showing the different positions of the machine during the cutting operation in a room or the like.

Fig. 6 is a diagrammatic view similar to that shown in Fig. 5 with the machine cutting in the opposite direction. l

In this illustrative disclosure, whichis a division of my copendingy application Ser. No. 312,346, filed July21, 1919, it will here substantially on line .3-3 of Serial Noi 312,346. Divided and this application filed December 11, 1924. vSerial N0. 755,259.

in be observed that I have shown a mining machine of the room and pillar type including a frame or casing 1 providedwith a bottom plate or shoe 2 adapted to support the machine and slidable upon the mine bottom or a ytransport truck, not shown, in a well known manner. l As shown this frameis provided with a rigid cutter bar 3 as is usual with machines of the type mentioned and this bar carries a cutter t"hain 4 equipped with cutter bits 5 and rotatable around the bar by means of a cutter chain drivin sprocket 6 located within the frame and herein preferably adjacent the rear end thereof through which the cuttings discharge. As illustrated, the machine frame alsoA carries a motor which maybe of any suitable type, herein a horizontal longitudinally extending reversible electric motor, having an armature 7 and controlled by any. suitable controller mechanisms 8 and 9. The armature 7 of this motor is hereiny operatively connected through improved mechanism, hereinafter described,- to the cutter chain driving sprocket 6 and is also operatively connected, through other improved operative connections likewise hereafter de` scribed, to selectively operative feeding'and controlling members l10 and 11, herein in the form of winding drums, and to a truck driving member 12, herein in the form of a chain sprocket, the construction being such that through flexible feeding means, herein for illustrative purposes shown in the form -of feeding cables 13 and 14, and operatively connected to the. feeding members 10 and 11, respectively, and guided by cooperating guiding members, herein in the form of idler rolls or sheaves 15, 16, and 17, the machine is adapted to be propelled'by its own power relative to the mine bottom or to its transport truck, in a well known manner, while through a suitable chain connection, not shown, operatively connectible between the member 12 and the wheels of the transport truck, the machine is adapted to propel the truck when mounted in transport position thereon. It will herein be observed that the guide roll 15 may be transposed to the opposite side of the machine frame when the machine iscutting from left to right.

It will herein further be observed that the motor armature 7 is provided at its rear end with a bevel pinion 19,hferein meshing Vit will also lmeshvfith an internal gear V31, which` is with a horizontally disposed lower bevel gear 20, which, as shown in Fig. 2, is in turn rotatably mounted in suitable bearings 21 at the upper end of a vertical stud 22 having its lower endthereof extending through suitable adjustable bearings 23 and supported on the shoe 2 at the rear end of the latter. The bevel gear `2O in turn is fixed, herein by a key 24, to a sleeve 25 likewise external to the bearings 21 and coaXially disposed with and rotatable relative to the stud 22 and having a pinion 26 on the lower reduced portion of the sleeve. with a plurality of slightly larger pinions 27, herein three, disposed radially thereabout and rotatably mounted as on removable bearing members 26 carried on a rotatable spider 29 which, in turn, has an upstanding rotatable sleeve 30 disposed coaX- ially with the stud 22 and between the same and the pinion 26 and the gear 26. Herein, be observed that the pinions 27 journaled on the lower end of the stud 22 and preferably integrally united as by screws 32 with the cutter chain driving sprocket 6 likewise journaled on the/stud. Thegear 81 is herein also provided with a depending portion 33 having a fia-nge 34 at is periphery running close to the inner edge of a flange formed on the frame 1, the construction being such that the entry of cuttings or the' like into the gearing is eifectually prevented. Herein, attention is also directed to the -fact that the outer periphery 36 of the gear 31 is adapted to be engaged by frictional controlling means, herein inthe form of a brake band 37, having one end operatively connected to the frame, as at 38, and its other end connected to a threaded controlling member 39 (see Fig. 4) threaded in the bushing 4() extending through a suitable aperture in the side of the frame and controlled by a nut 43 rotatable by a hand wheel 42 on the outside of the frame. As a result of this construction it will be observed that the cutting chain driving sprocket 6 may be rotated or remain idle while the motor` is running, the cutter chain driving sprocket being adapted to be driven at full speed when the member 29 is held stationary. y i

lOperatively connected to the cutter chain driving mechanism is improved cooperating feeding means adapted to drive the feeding and controlling drums 10 and 11. As shown, the sleeve 30 on the spider 29 carries on its upper end a small bevel pinion 45 which, in turn, constantly meshes with corresponding bevel gears 46 and 47. The gears 46 and 47 are herein spaced apart by a spacing and bearing member 48 formed on the uppervend of the stud 22 and are freely rotatable on a shaft 50 disposed transversely of the frame, as shown in Fig. 1. Herein the gear 47 is The pinion 26 meshes i mechanism also. suitably rigidly connected, as by a usual semi-permanent clutch or other connecting means 49 to a rotatable driving member 51 Y' herein carrying thereon one of the elements of a friction clutch 52 and cooperating with an outer clutch casing lmember rupon` which the drum 10 is formed. The member 53 is in turn journaled, as at 54, in a suitable closure member 55 carried at the side of the machine frame. Herein, the gear 47 has an annular chamber 56 therein receiving an adjustable friction controlling member 5.7

adapted to compress or release the elements of the frictionclutch 52 at will and thereby cause the feeding drum 1() to be rotated with the gear when the friction Vis loaded or to enable thegear to rotate independently of the ydrum 10 when the friction is released. Referring back to the gear 46, will be noted that this gear is similarly connected7 f as by a usual semi-permanent clutch or other connecting means 58.*w1th a driver member 59 carrylngone of the elements of `a frictional clutch 60, the other elementof the latter being,`as heretofore, carried by a casing member 61 upon which the drum 11'is formed. The member 61y is journaled, as `at 62, in-a closure member 63, similar to the member 55, carried bythe opposite side of the machine frame. The gear 46 is likewise u' ter chain when the frictions 52 and 6() are y used and the brake band 37 is set, the speed of the feed then obtained, i. e., when the cutter chain is not in` operation, is materially greater than the cutting speed obtainable when the brake band 87 isVu released, i. e., when the cutter chain is in operation.

Operatively connected with t-he feeding mechanism, herein through the friction clutch 60, lis improved truck driving mechanism adapted operatively to connect or disconnect the truck driving member 12. As shown, this member 12 is provided with a sleeve 66 receivable on a corresponding sleeve 67 on a sleeve member 68 which is suitably fixed, as by a key 69, to the clutch casing member 61 and rotatable with the latter. Here it will also be observed that clutch teeth V70 are provided on adjacent surfaces of the members' 12V and 68, and that the member 12 is provided with a suitable mechanism 71, similar to that disclosed in my copending application mentioned above, wheremesma bythe member 12`may be forced" outwardly relative to the-member 68 to disengage the clutch teeth when-desired, for instance during thecutting operation or duringy the ltruck loading or unloading operation. Itis t-hus possible when the machine is on: its transporttruclrto connect the member 12 to the member G8 andconsequently to the casingl upon Which the drum 112is formedin such manner as to drive the member 12 at a fast speed'through the friction mechanism 6(), it of course being understood that during this truck driving operation the brake band 37 is set tight in such manner as to prevent movement of the cutter chain driving sprocket 6.

Cooperating withthe friction mechanism, hereinV above described, is improved'means for controllingthe same whereby 'the facility ofl control is enhanced and the effortV required by the operator is materially reduced. These mea-ns, as shown herein, are of tliepressure fluid type, the annular chalutiers 5G`and 64 in the gear members 47 and 46' being in the form ofcylinders and the movable friction controlling members 57 and being in the form ofpistons movable in said cyl` inders under. the influence of pressure fluid.y herein, pressure liquid such as oil admitted thereto through oppositely locatedports 72 and73 formed in the members 47 and 46 respectively and which communicate with an Aaxial chamber 75 in the' shaft 49. It will also be noted that disposed in this chamber 75 is a. plurality of coaxially andoppositely disposed pistons 76 and 77k providedwvith operating rods 78 and 79 connected through sui table mechanism, heretofore described in my copending application Ser. No. 312,346, by suitable coaXially arrangedhand Wheels 8O and 81. By the provision of such a mechanism it will be observed that it is possible to control the frictions substantially asV above set forth by adjustment` of the hand Wheels SOand 8l. More particularly it will be noted that the tivopistons and 77 may be` simultaneously moved toward one another or away therefrom by adjustment, of the hand Wheel 81 when the hand vvheelSO is heldsta-tionary, and that the rod 7 9 will be adj usted bodily With the pistons in either direction when the hand Wheel 814 is held, stationary andthe hand Wheel SO isrotated. Thus it will be observed that through movement of the hand'ivheelv 80 the rzod'79 may be, adjusted bodily tobringthe desired piston 76, 77 into fullface contact- With the oil and thereafter through` operation of. the hand vWheel 81, thisdesired piston may be adjustedrelative to the. rodin such manner as tosubjectthe oil to the desired pressure necessarytocauseloading of the frictions. Ofy course both pistons may. simultaneously be caused -to exert pressure on the oilrto effect simultaneous clutch loading, it being possible by sepa-rate lorsimultaneous adjustments oflt-hehand Wheels'to produce any-desired eife'ct. It will also'fbe noted that thefric'-` tions 52 and 60 are provided with suitable eral limits of t-hc machine frame in such man-ner as to reduce the Width of the latter.

In the operation ofmy improved mining machine, cutting from 'right to lefti as shown in Fig. 5, it will hereiny be observed that the free endl of the cable 13 is secured' at the face of the coal by means ofa suitable jack A. The clutch 52 controlling the drum 10 is then thrown in. Winding in the cable'13 at the desired speed and the cutter bar` 3 is sumped from the full line position, in under the face of the coal. The receding or controlling'cable 14 is then connected adjacent the right handrib by means of a usual jack lor take-upmechanism B and the feed cable 18" is then connected to the jacltrAv which has been moved to the left hand rib. The

machine* mayjthen be straightenedup in anyofFig. 5, by means ofthe take up B, by

the use of a ack, or by bringing thev machine to the desired angle by the drum 11 an'dlthen completing thefcut. The take-up B maybe utilized for angling the machine during the transverse cut, if desired. The machine is then Withdrawn from the face by means of the drum 10, in the usual manner. 'During the cutting operation from left to right, as shownin Fig; 6, the driving motor and the relative position of the cutter bits is reversed and the cable 14 connected to the drum 11, Which during this operation is the feeding drum, is connected at the 'taf-e to the usual jackv A. After the s-umpingcut the cable 13 connected to the' drum 10 is connected at' the left hand rib by means of a usual jack or'take-up mechanism B While the jack A ismovedto the rightv hand rib. The machine isy then moved: transversely across the face and withdrawn from the coal in a manner substantially similar to that described above during the right to left` clutch 52 controlling the drum 10 and applying the clutch 60, andreversing the motor 7, thus causing the controlling drum 1l to act as a take-up member to wind in the cable 14 and thereby pull the rear end of the machine toward the right hand rib. If it is desired to angle the machine when cutting from left to right, as shown in Fig. 6, the brake band 37 may be applied, thus preventing rotation of the sprocket 6the clutch G() released and the clutch 52 applied7 the motor 7 reversed, and the take-up drum 10 may then wind in the cable 13, pulling the end of the machine toward the left hand rib.

` As a result of my improved construction a mining machine is provided having improved cutting, feeding means, and controlling mechanism whereby the machine may be operated in opposite directions with greater facility. It will further be noted that im roved truck driving mechanism is provi ed which cooperates directly with the feeding mechanism. It will further be noted that a feeding and cutting mechanism of exceedingly simple and compact character Y is provided whereby the facility of operation of the cutting and feeding mechanism is substantially increased and wherein the lateral limits of the machineare substantially decreased. These and other objects and advantages of my improved mining machine will be clearly apparent to those skilled in the art. i

While I have in this application specifically described one form'which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

`What I claim as new and by Letters Patent is: p

l. In a mining machine, :feeding mechanism including a shaft, a feed member and a controlling member each disposed coaxially with said shaft, said feed and controlling members being relatively rotatable and desire to secure `each adapted to cooperate directly with flexible feeding means during machine feeding and to cooperate in effecting guided movements of the machine, and friction means operable to effect simultaneous independent control of said members.

2. In a mining machine, feeding mechanism including a feed operating member and a controlling member each ofwhich is adapted to cooperate directly with flexible feeding means, and means including a separate friction controlling clutch for each of said members to effect simultaneous rotation of said members at the same speed in opposite directions.

In a mining machine, feeding mechanism including a feed operating member and a controlling memberV having separate flexible feeding elements cooperating therewith, and means including a separate friction controlling clutch for each member to simultaneously rotate said members in opposite directions to respectively wind in and pay out said elements each at a predetermined slow speed..

4. In a mining machine, feeding mechanism including a shaft, a plurality of coaxial relatively rotatable feeding members each adapted to cooperate directly with fieX- ible feeding means, andl a plurality of friction clutches arranged coaxially with said shaft for independently controlling said members, one of said clutches being individual to the control of one of said members and the other to the control of the other.l

5. In a mining machine, a machine frame slidable on the mine bottom, cutting mecha.- nism carried thereby including anelongated plane cutter bar, and mechanism for feeding said cutter bar laterally comprising aV shaft. coaxial feeding drums thereon, and a plurality of friction clutches arranged coaxially with said shaft for independently or v `simultaneously controlling said drums.

6. In a mining machine, feeding mechanism including a shaft, coaxial feeding drums thereon, and a plurality of friction clutches arranged coaxially with said shaft for simultaneously operating said drums at Y the same speed in opposite directions.

7. In a mining machine, a machine frame slidable on the mine bottom, cutting mechanism carried thereby including an elongated plane cutter bar, and mechanism for feeding said cutter bar laterally comprising a shaft, coaxial feeding drums thereon, and a pluralitv of friction clutches arranged within said drums coaxially with said shaft for variably controlling said drums.

8. In a mining machine, a machine frame slidable on the mine bottom, cutting mechanism carried thereby including an elongated plane cutter bar, and mechanism for feed-V ing said cutter bar laterally .comprising a shaft, coaxial feeding drums disposed thereon, and a plurality of friction clutches forA controlling the operationof'said drums, and means arranged coaxially with said drums for simultaneously or independently controlling said clutches. y

' 9. Ina mining machine, a machine frame Vlio slidable .on .A the Vmine bottom, cutting `imechanism carried thereby includingy an elongated plane cutter bar, :and mechanism V for kfeeding said cutter bar laterallycomprising a,

shaft, coaxial. feeding. drums .disposed thereon, ar plurality `of ifriction clutches disposed Within said drums for controlling theoperation ofthe same, and means arrangedcoaxially Withsaid drums l.for simultaneously or independently controlling said clutches.

10. In a mining machine lincluding a machine frame, cutting mechanism carried thereby :including an elongated plane cutter banand mechanism for feeding said cutter vbar laterally including a feed operating drum and a controlling drum disposed v vithin said machine frame, and "contro'lllin'g means for said Vdrums arranged coaxially therewith.A

v11. ,In a mining machine `including a machine frame, cutting mechanism carried thereby including an elongatedplanecutter baia-and mechanism yfor feeding said cutter bar laterally including fa feed operating drum and acontrolling drum disposed Within the `limits of said frame, cables cooperating ivith said drums, and :controlling means for .said drums arranged coaxially there- With. A

12. VIn a mining maehine, y a -machine frame, 'cutting mechanism carried thereby including an elongated plane cutter bar,and mechanism for yfeeding said cutter lbar'laterally' including fafhori'zontally disposed relatively rotatable feed operating shaft, and controlling members .disposed coaxially therewith and eachadapted 'to cooperatedirectly With flexible feeding means, and friction means operative to independently control said members.

13. In a mining machine, a horizontally disposed shaft, coaxial'feedi'ng drums disposed vthereon,` ra y,plurality of friction clutches disposed Within saiddrums 'for controlling' the operation of` the same, and means arranged coaxially Withysaid drums for simultaneously. or 'independently controlling said clutches. i

14. In as mining machine, vfeeding mechanism including a shaft, feed and controlling members rdisposed Acoaxially therewith each adapted to cooperate with, flexible feeding .means, and hydraulicy means for controllingsaid members. a l

l5. In a.y mining machine, feeding mechanismincluding a shaft, feed .and controlling members disposed kcoaxial-ly therewith Veach adapted vto cooperate "With fiexible` feeding means, and hydraulic means for controlling said members disposed Within' said shaft. s

I6. lIn .aY mining machine, feedingy mechanism including a shaft, feed .and controllingmembers disposed coaxially therewith each adapted to cooperate With flexible feeding means, andia plurality of hydraulically operative .fric-tion clutches for ycontrolling said members. L v V 17. In amining machine, a feed yoperating membery and a controlling 4member each adapted to cooperate directly with flexible fee/ding means, driving means therefor vin cluding a pair of frictions disposed coaxially With said members, and means for simultaneously `driving said members in opposite directions at the same speed. A

V18. Inia mining, machine, a feed operating member vand a controlling member .each adapted to cooperate directly with flexible feedingmeans, driving means therefor including a pair of frictions disposed coaxially with said members, and means for simultaneously-driving said members in oppositedirections .at variable speeds. v

Inla mining-machine, `feeding means includingafeed operating member, a controlling member, said members each .being adapted to cooperate With flexible feeding means, frictionally controlled feeding mechanism therefor including `a plurality of frictions,andpressure fluid actuated controlling means for each ofsaid frictions 20. In a mining emachine, a frictionally controlledjfeeding ymechanism including a pluralityof frietions, a feedingmember and a controlling member driven thereby, said members yeach being [adapted to `cooperate With flexible .feeding means, and "hydraulic controlling means adjustable -to `control either or bothfof said frictions, y i

l21. In a miningV machine, .frictionally lcontrolled feeding mechanism including aplurali-ty of frictions, ai feeding member and a. controllingmember, said` members each kbeing adapted to cooperate with flexible feeding means, and pressure iiuid actuated con trolling means operative `to apply leither of said frictions lseparately or' both Psimultaneousl'y includinga plurality of independently operable controlling members.

22. The combination with ,a mining machine, of fe'edingmechanism including a feed oper-ating member and #a controlling member, said lmembers each being adapted to cooperate With flexible feeding meansA and being relatively' rotatable, cutting rmechanism, and reaction driving mechanism between saidl feeding-mechanism and said cuttingmechanism.

23. The combination With a mining machine, of feeding mechanism including -a feed operating memberA and a controlling member, said memberseach being adapted to` cooperate with fiiexible .feeding means and `.being relatively rotatable, cutting `mechanism, andvariable react-ion driving mechanism -between said feeding mechanism-and said cuttingmechanism. A24. The'combination With .a mining machine, of feeding mechanism including aifeed operating-member anda controlling memlili) ilu ber, said members each being adapted to cooperate With flexible feeding means, cutting mechanism, and mechanical means operatively connecting the same for decreasing the speed of one upon an increase in speed of the other. v

25. The combinationvvith a mining ma` chine, of feeding mechanism including a feed operating member and a controlling member, said members each being adapted to cooperate With flexible feedingv means, cutting mechanism, and variable speed mechanism between said feeding mechanism and said cutting mechanism to cause the speeds of said members and said cutting mechanism to vary inversely.

26; In a mining machine, the combination including a motor,` a feed operating member and a controlling member each adapted to cooperate directly With flexible feeding means, cutting mechanism, and variable speed mechanism between said cutting mechanism and said members driven by said motor and operative to causethe speeds of said members and said cuttingl mechanism to vary inversely proportionally 4While the motor speed remains substantially constant.

27. The combination With a mining machine, cutting mechanisnn feeding mechanism including a feed operating drum and a controlling drum, and feed gearing 1associated therewith directly controlled by the reaction ofsaid cutting mechanism.

28. In a mining machine, feeding mech-` anism including a feed operating friction clutch, a talreup friction operating clutch, and a supplemental clutch adjustable at Will to retard either of said clutches to vary the feed accomplished thereby.

29. In a mining machine, feeding mecha- Y nism including a frictional feed device and a frictional takeup device, and a cooperating frictional device adapted to retard said feed and takeup frictional devices to vary the rate of feed of said machine.

30. In a mining machine, feeding mechanism including a frictional feed device, a frictional takeup device, and a cooperating Vfrictional device adjustable at Will and` adapted to vary the effect of 'both said feed ,and takeup frictional devices.

either direction of feed extending in opposite directions from the opposite ends of the frame and When feeding in different directions having different portions forming the advance portion` and Wound in by different feed operating members to Whichthey are respectively individual, and actuating and controlling means for said 'feed operating members carried on said machine operative to permit vpaying out of one of said portions at a different rate from that at Which the other is Wound in.

3 The combination with a mining machine having cutting mechanism including a cutter chain carrying cutter bar and means for effecting circulation of said chain in opposite directions relative to said bar to cut and clear a kerf during lateral feeding in either direction, a feeding mechanism for propelling the same laterally along a face in either direction during cuttingincluding a plurality of feed operating members respec-v tively adapted to propel the machine laterally during opposite directions of operation of the cutting mechanism, flexible feeding means including flexible feeding portions in either direction of feed extending in opposite directionsfrom the opposite ends of the frame and When feeding indifferent directions having different portions forming the advanceportion and Wound in by different feed operating members to which they are respectively individual, and actuating and controlling means for said feed operating members carried on said machine operative to permit paying out of one of said portions at a faster rate than that at which the other is Wound in.

33. In combination, in a mining machine having cutting mechanism including a cutter chain carrying cutter bar provided with a circulating cutter chain operative when propelled in opposite directions relative to said bar to cut and clear'a kerf during lateral feeding in opposite directions, a motor and means for propelling said, machine in opposite directions across a mine face during cutting in opposite directions including a pair of like relatively rotatable feed operating members rotating on horizontal axes at opposite sides of said machine frame and each adapted to cooperate directly with flexible feedingfmeans, and actuating and controlling'means therefor driven by said motor including a driving member rotated in opposite directions on reversal of said motor and means for operatively connecting either of said feed operating members thereto for driving thereby. u

34. In combination, in a mining machine having cutting mechanism including' a cutter chain vcarrying cutter bar provided With a circulating cutter chain operative when propelled in opposite directions'relative to said bar to cut and `clear a `kerf during latloo lli

driven by said motor including a member ro-` tated in opposite directions on'i-'eversal of said motor vand means for operatively con necting either of said feed operating members thereto fordriving'thereby.

35. In a 'mininr machine,'the'combination including reversi le cutting mechanism including a cutter chain havingreverse cut- 'ting elements operative on driving of said chain inreversedirections tolcut and cleara kerf when said machine is propelled in opposite Adirections across a face and a cutter cliain'driving sprocketcooperating with said Vcutter chain'to actuate the same, a motor disposed in advance of'said cutter chain ldriving sprocket, and means for propelling said machine at equal speeds in opposite directions during cutting'across a face including a plurality of relatively :rotatable like feed operating members rotatable on horizontal transversely extending axes at opposite sides of the machine frame tothe rear of said motor and each adapted 'to-cooperate directly with flexible feeding means, and means driven by said motor l`for actuating salid -feed operating members including a shaft to the Vrearofsaid motor andin'eans for selectively connecting said lfeed operating members in driven 're-lation -to said shaft.

36. 'In a mining machine, 'the combination including reversible cutting mechanism in cluding 'a cutter chain having reverse cutting elements operative on `drivingof said vchain in reverse directions to cut and clear -a kerf Vwhen said machine is :propelled in opposite directions across a faceand a cutter chain driving sprocket cooperating With said cutter chain to actuate the same, a motor disposed in advance of said cutter chain driving sprocket, and means for propelling said machine'at equal speeds in opposite-directions during cuttingacross afaceincludling a plurality of relatively rotatable like feed, operating members rotatable onhori- "zontal transversely extending axes at opposite `sides of the machine frame tothe rear of said motor and each adapted to cooperate directly ywith flexible feeding means,

land means driven by said motor for actuating said feed operating members including a shaft tothe rear of said motor and means for selectively connecting said feed operating members in driven relation to said shaft includingclutch meansslidable transversely of said machine.

37; In a mining fmachine, 1the=-combination 'including reversible cutting iine'chanism- Eincluding a cutter chain vhaving reverse cutting elements operativeon driving offsaid chain in reverse directions to cut andclear a kei-f when said machine =is propelled in opposite directions across a face anda cutter chain driving sprocketcooperating wvitli said cutter chain to actuate 'the-saine, a inotor disposed in advance of said cutter chain driving sprocket, and means for `propelling Said machine at equal speedsjin opposite Idiiections vduring cutting across `a face vincluding afpluiality of relatively rotatable like feed operating members rrotatable onvhorizontal transversely extending axes Yat opposite sides of the machine iframe to "the rear of said motor and each adapted #toicooperate directly `with flexible feeding means, and-means driven bysaid motor -forLaot'uating said feed operating members including va shaft to the rear of said motor and means for selectively connecting-'said feed operating members in dri-ven relation yto said shaft vincluding clutch means 'fat opposite sides of the center line of said inachineand irecprocable transversely of ithe machine to connect Vthe elements operatively controlled hereby in driven relation to said shaft.

38. The combination With a `mining Iinachine having reversible cutting lmiechaiiisiii, of feeding mechanism for propelling fthe `saine laterallyalong a face in either direc,-A -tion during cutting including'apluralityfof rei'atively rotatable feedoperating members each adapted to propel-the machine laterally during afdi-fl'eren't direction ofoperation'o'f said cutting mechanism, and flexible feeding means including flexible feeding portions in either direction of feed extending inoppo- `site directions ffrom the opposite ends of'said `frame and Whenfeeding in different directions having diflerent portions formingthe advance portion `and-=vroi1iid yin by different lfeed operating 'members "to Which vthey are respectively individual.

39. The combination Witlia mining `machine having reversible f cutting mechanism,

'of Vfeeding mechanism forv propelling :the

saine laterally along a face in either direc- "tionduring cutting including a. vplurality of relatively rotatable feedoperating members-rotatable on transverse axes on vopposite sides of'said machine frame each adapted to propel the machine laterally during a different direct'ionof operation of said cutting mechanism, and yflexible feeding means including iiexible feeding portions vin either direction y of feed extending in opposite directions from the opposite ends of saidframe and `when 'feeding .in different directions having different'portions forming the advance portion and Wound in yby different feed perating members lto kvvliicli they are respecltively p individual.

Wfl)

"fiat Y tion of operation of said cutting mechanism,

and flexible'feeding means including flexible feeding portions in either direction of feed extending in opposite directions from the opposite ends of said frame and when feeding in different directions having different portions forming the advance por-` tion and wound in by different feed operating members to which they `are respectively individual. Y

41. The combination with a mining machine having reversible cutting mechanism,

of feeding mechanism for propelling the same laterally along a face in either direction during cutting including a plurality of relatively rotatable feed operating inembers of the same size rotatable on transverse axes on opposite sides of said machine frame each adapted to propel the machine laterally during a different direction of operation of said cutting mechanism, and flexible feeding means including flexible feeding portions in either direction of feed extending in opposite directions from the opposite ends of said frame and when feeding in different directions having different portions forming the advance portion and wound in by different feed operating members to which they are respectively individual. y i

42. The combination with a mining machine having reversible cutting mechanism, of feeding means therefor including a plurality of relatively rotatable feed operating members of the same size respectively adapted to propel the machine laterally in opposite directions, flexible feeding means including a plurality of flexible feeding portions one individual to each of said feed operating members, and guiding means for said portions, said feed operating members rotating in opposite directions depending upon the direction of rotation of said cutting mechanism.

43.`The combination with a mining machine slidable on a mine bottom and having reversible cutting mechanism, of flexible lateral feeding mechanism therefor including a plurality of relatively rotatable cable drums, a plurality of flexible feeding `members, one individual to and wound on each of said drums and disposable laterally, andguiding means disposed on said machine and cooperating with said flexible feeding members, said mechanism having provision for feeding said machine laterally in opposite directions under the propulsion of different drums and during operation of said cutting mechanism in oppositeV directions and provision whereby during opposite lateral feeding movements'either of said flexible feeding members may act as the advancing member while its .fellow acts .as the receding member. i

44. The combinationl with a mining machine slidable on a mine bottom and having reversible cutting mechanism, of flexible lateral feeding mechanism therefor including a plurality of relatively rotatable cable drums disposed on transverse axes on opposite sides thereof, a plurality of flexible feeding members, one wound on and individual to each of said drums and disposable laterally, and guiding means disposed on said machine and cooperating with said flexible feeding members, said mechanism having provision for feeding said machine laterally in opposite directions under the propulsion of different drums and during operation of said cutting mechanism in opposite directions and provision whereby during opposite lateral feeding movement either of said flexible feeding members may act as the advancing member while its fellow acts as the receding member.

45. rIhe combination with a mining machine slidable on its bottom on a` mineibottom and having reversible cutting mechanism, of flexible lateral feeding means therefor including a plurality of relative rotatable cable drums of the same diameterfand rotatable on transverse axes and disposed on opposite sides of said machine, a plurality of flexible feeding members each cooperating with and individual to one drum and disposable laterally, and guiding means cooperating with each flexible feeding member, said mechanism having provision for feeding said machine laterally in opposite directions under the propulsion of different drums and during operation of said cutting mechanism in opposite directions and provision whereby during oppositeV lateral feeding Vmovements either flexible feeding member may act as either the advance or receding member while its fellow acts as the receding or advance member. i

46. The Acombination with a mining machineslidable on a mine bottom and having reversible cutting mechanism, of flexible lateral feeding mechanism therefor including a plurality of relatively rotatable cable drums, a plurality offlexible feeding members, one individual to and wound oneach of said drums and disposable laterally, and guiding means disposed on said machine and cooperating with said flexible feeding members, said mechanism having provision for feeding said machine under the propulsion ofydifferent drums laterally in opposite directions at the saine speed during operation of said cutting inechanism'in opposite dilll) rections and provision whereby during opposite lateralfeeding movements either of said flexible feeding members may act as the advancing member while its fellow acts as the receding member.

47. The ,combination with a mining mac-hiiie slidable on a mine bottom and having reversiblefcutting mechanism, of flexible lattei'al feeding mechanism therefor including a lplurality of ielatively rotatable cable drums disposedon transverse. axes on opposite sides thereof, a plurality of flexible feeding members, one individual to and wound on each of said drums and disposable laterally, and guiding means disposed on said machine and cooperating with said flexible feeding members, said mechanism having provision for feeding said machine under the propulsion of diferent drums laterally in opposite directions at the samev speed `during operation of said cutting mechanism in opposite directions and provision whereby during opposite lateral feeding movements either of said flexible feeding members may act as the advancing member while its fellow acts as the receding member.

48. The combination with a mining machine slidable on its bottom on a mine bottom and having reversibleciitting mechanism, of flexible lateral feeding means therefor including 'a plurality of relatively rotatable cable di'uins of the saine diameter and rotatable on transverse axes and disposed on opposite sides of said machine, a plurality of flexible feeding members each coopei'ating with and individual` to one drum and disposable laterally, and guiding means cooperating with each flexible feeding member, said mechanism having provision for feeding said machine under the propulsion of different drums laterally in opposite directions at the same speed during operation of said cutting mechanism in opposite directions and provision whereby during opposite lateral feeding movements either flexible feeding membei may act as either the advance or receding member while its fellow acts as the receding or advance member.

49. The combination with a n'iiningmachine slidable on a mine bottom and having reversible cutting mechanism including a rigid stationary cutter barand a rotatable cut-ter chain thereon, of flexible. lateral feeding mechanism therefor including a plurality of relatively rotatable cable drums, a plurality of flexible feeding members one wound on each of said drums and individual thereto and disposable laterally, and guiding means disposed on said machine and cooperating with said flexible feeding members, said mechanism having provision for feeding said machine under the propulsion of different drums, l

laterally iny onedirection during rotation of said cutter chain in one direction and in the opposite direction during rotation of said chain. in theopposite direction and provision whereby during lateral feeding in differentdirections a different flexible feeding member acts as the advancing member while its fellow acts as the receding member.

50. The combination with a mining machine slidable on a mine bottom and having reversible cutting mechanism including a rigid stationary cutter bai' and a rotatable cutter chain thereon, of flexible lateial feeding mechanism therefor including a plurality of relatively rotatable cable drums disposed on transverse axes on opposite sides' thereof, a plurality of flexible feeding members one wound on and individual to each of said drums and disposable laterally, and guiding means disposed on said machine and cooperating with said flexible feeding members, said mechanism havingprovision for feeding said machine under the propulsion of different drums laterally in one direction during rotation of said cutter chain in one direction and in the opposite direction during rotation of said chain in the opposite direction and provision whereby during latsoY eral feeding in different directions a different flexible feeding member acts as the advancing member while its fellow acts as the receding member.

5l. The combination with a mining machine yslidable on a mine bottom and having reversible cutting mechanism including a rigid stationary cutter bar anda rotatable cutter chain thereon, of flexible lateral feeding mechanism therefor includingaplurality of relatively rotatable cable drums of the same diameter, rotatable on transverse axes, and disposed on opposite sides of` said machine, a plurality of flexible feeding members one wound on andindividual to each of said drums and disposable laterally, and guiding means disposed on said machine and cooperating with said flexible feeding inembers, said` mechanism having provision for lfeeding said machine under the propulsion of different drums laterally in one direction during rotation of said cutter chain in'one direction and in the opposite direction during rotation of said cutter chain in the opposite direction and provision whereby during lateral feeding in different directions a different flexible feeding member actsas the advancing member while its fellow acts as the receding member.

In testimony/,whereof 1 affix my signature.

` MORRIS P. HOLMES.

CERTIFICATE en Gemeenten.

Parent N0. 1,662,794. A Granted March is, 1928, to

MORRIS P. HOLMES.

It is hereby certified that errer appears in the printen? specification of the above numbered patent requiring cerreetien as folien/e: Page l, ine 19, for the werd "mechanism" read "meehanisms"; page 2, line Sii, 'tot the werd "is" read "its"; line 64, for the number "5D" read "49", vand iine 68, for the number "49" read "50"; page 5, line 35, claim 12, strike out the wor "Shatt" and insert the same to'fnllow after the werd "disposed" in iine 3ft; page 8, iine 98, claim 45. fer the werd "zeative" read "reiativeiy"; page 9, Eine 63, claim 49, after the word "drums" strike out the comma; and that the said Letters Patent should be read with these correctens thetein that the same may con form to the record ofthe case in the Patent Office.

Signed and sealed this 1st day of May, A. D. 1928.

M. J. Moore, (Seal) Acting Commissioner of Patentse

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