US1804946A - Mining machine - Google Patents

Description

C. F. OSGOOD MINING MACHINE May 12, 1931.

Original Filed June 18, 1923 4 Sheets-Sheet l A arney.

May 12 1931.

c. F. ossoon MIN ING MACHINE 7 Original Filed June .18, 1923 I 4 Shee ts-Sheei i q n n n n n n n l l. u

- (Iii u raw/6y.

I c. F. eseoon Ma y12, 1931 MINING MACHINE Original Filed June 18, 1925 I 4 Sheets-Sheet 5 @Jziarney.

May 12, 1931. c. F. 056000 1,304,946

MINING MACHINE I Original Fild June 18, 5 4 smug-sheet 4 ulllu l CL-Zia n 69.

Patented May 12, 1931 em Mia?" cams-pas r, oseoon, or ctnnnmonr, new HAMPSHIRE, AssIeNon ro SULLIVAN MA- c n nY cor rany, a conroan'rron or MASSACHUSETTS MINING MACHINE Application f led June 18, 1923, Serial No. 646,001. Renewed September 15, 1930.

My invention relates to mining machines and more particularly to mining machines of the flexibly fed type;

Anobje'ct of my invention is to provide'an improved minin imachine; "Another object of my inventionis to provide improvedmining machine feec lingmeans including feed operating and take-up mechanisms on the machine. A further object of'my-inveiition 1e to provide a compact low machine especially adapted for lowveinwvorlr. A still further objectofmy invention i's-to provide an improved. mining machine readilyadaptable to either the longwall or-r'ooin and pillar meth- 45nd of mining. These and other objects and advantages of my invention will hereinafter more fullyappear.

In the accompanying drawings I have shownytwo forms which nay-invention may assume in practice.

In these drawings,

Fig. 1 is a plan view partially in section, of a mining machine, arranged to make a longwall' cut, incorporating my improved mechanism.

Fig. 2 is a side elevation of Fig. 1.

Fig. 3 is a plan view of the machine shown in'Fig. 1 arranged to make a room and pillar cut.

80 Fig. 4 is asideelevation of the rear end of the machine.

Fig. 5 is a side elevation .of the opposite rear end of the machine.

Figs. 6, 7 and 8 are diagrammatic views of the machine arranged to make a longWall .cut.

Fig. 9 is a diagrammatic view of the machine arranged to make a room and pillar cut. I

Figs. 10, 11 .and 12 are views corresponding to Figs. 1', 2 and5 but showing a modified construction.

In the illustrative form of my invention shown, in Figs. 1 to 9 inclusive, I have shown v my invention applied to an air propelled,

flexibly fed, mining machine adapted to slide 7 on its bottom 1 on the mine bottom relative to a flexible feeding means of any suitable form preferably adapted to provide advance $10 and receding portions herein in the form of a chain l, .and carrying atone end a pivoted cutter bar 2. I v i Referring more particularly to the ma-' chine, it will benoted that the same herein comprises a motor section 5, a feed section 6, and a cutter carrying section 7, all being slidable on themine bottom and the feed and the cutter carrying sections being disposed at opposite ends of the motor section 5 and rigidly connected to the latter. As shown, it will also be noted that the feed and motor sections slide directly on their own bottoms vwhile the cutter section has a suitable shoe underlying the same. Of these sections,-the motor section has disposed therein a fluid pressure actuated motor of any approved form, herein transversely disposed and comprising-a pair of inter-meshing toothed rotors 8 and 9 disposed in bores 10 and 10, respectively, formed in the motor section 5 and rotatable on transverse axes lying in the same parallel planes and suitably secured to shafts l1 and 12 journaled in heads 13 and 14: forming a portion of the side walls of the machine frame. Fluid pressure is admitted to the motor in a. well known manner through a connection15 from any suitable source of supply. it is obvious that the heads 13 and 14 may be detached from the motor casing to peiiit removal of the motorrotors laterally from the machine frame without detaching w particularly, it will be noted that a spur pin-v ion 17 is herein suitably secured to the shaft 12 of the rotor 9 which meshes with a. reach gear '18 which in turn meshes with a gear 19 disposed on a-transversely disposed horizontal shaft 19 journaled in the frame secti0nf7. Splined to the shaft 19 is a jaw clutch 2O operated by a lever 20 adapted to connect .the gear 19 to the shaft- Secured.

Mill

to the shaft 19 is also a worm 21 which meshes with a worm gear 22 journaled on a vertical shaft 23 coaxial with the pivot of the cutter bar 2, which rotates the cutter chain 16 in a well known manner through connections not shown. Also driven by the gear 19 is a pinion 24 which meshes with a gear 24' disposed on' a shaft 25 arranged parallel with the shaft 19. The shaft 25 has a pinion 26 secured thereto which meshes with an intermediate gear 2'? which in turn meshes with a gear 28 journaled on the shaft 19 and is adapted to be connected thereto by means of a jaw clutch 29 operated by a lever 29 to drive the worm and consequently the cutter chain 16 in an opposite direction. The frame section 7 is also herein provided with a circular flange 30 having aplurality of radially located apertures 31 formed therein in which a pin 32 likewise receivable in the bar is insertible to lock the cutter bar in operative position in awell known manner. The cutter bar 2 is herein also as usual provided with a projection'33 to which the chain 4 is attached to swing the cutter bar about its pivot in a well known manner. From the foregoing it is clearly evident that the cutter bar may be swung about its pivot to either side of the machine and locked in position and that the cutter chain may be rotated in opposite directions, as circumstances require, by means of the jaw clutches 20 and 29. Here it should also be noted that a removable swing arm supported sprocket 33 may be inserted in one of the unused apertures in the flange 30 for purposes hereinafter described (see Fig. 3).

Referring more particularly tothe feed frame section 6 which incorporates my improved feeding mechanism, it will be noted that suitably secured to the rotor shaft 11 is a pinion 34which meshes with areach gear 35 ournaled in the frame and which in turn meshes with a gear 36 journaled on a sleeve 36 ournailed on a transverse horizontal shaft 37. The gear 36 drives the shaft 37 through a friction clutch mechanism, generally designated 38, and reduction gears-39, 40, 41 and 42 at a fast or haulage speed, and through a friction clutch mechanism 43 through reduction gears 39, 40, 44, 45, 46, 47, 48 and 49 at a slow or cutting speed. The friction clutches 38 and 43 are herein under control of a shipper 50 operated by a lever 51 on the rear end of the machine frame. Further, it will be noted that detachably secured to opposite ends of the transverse shaft 37, as by clutches 52 and 53 operated by levers 52 and 53, is a feed operating member 54 and a take-up member From the foregoing description it will be clearly evident that the members 54, maybe driven from the motor in one direction at fast or slow speeds simultaneously or independently, and that a variation of these speeds may be obtained by the varying of the amount of application of the clutches 38 and 43. The members 54, 55 herein also have members 56 and 57, respectively, secured thereto provided with friction surfaces on their exterior periphery with which brake bands 58 and 59 cooperate, these bands being operated by levers 58 and 59' carried by the rear end of the machine frame. Cooperating with the feed operating member 54 and the take-up member 55 is the flexible feeding member or chain 4. Herein with the machine operating as shown in Figs. 1, 2, 5, 6, 7 and 8 to make a longwall cut, it will be noted that the advancing portion of the chain extends from a suitable anchor A at the face, along the face, beneath an idler sprocket 60, then forwardly and upwardly around an idler sprocket 61, beneath the feed operating member 54, and then upwardly and transversely across the top of the machine in a guide channel 62, and then downwardly beneath the take-up member 55, it being understood that the member 55 is released from the shaft 37, the feed chain then passing upward over an idler sprocket 63, the receding portion of'the feed chain lying slack on the mine bottom and not necessarily being connected to a jack during the out along the face. It will be noted that if desired the feed chain may also be arranged to cooperate with the member 55, passing beneath the idler 64 and guide rolls 65, 66, and 65 on the feed frame section and then extend laterally along the face to the jack A.

In the operation of my improved construction when used for longwall cutting, the machine, when unloaded from its transport truck (not shown) or otherwise brought up to a face, is preferably first brought up to a position adjacent the face, as shown in full lines in Fig. 6, with the cutter bar in line with the longitudinal axis of the machine. The chain 4 is first attached to the projection 33 on the cutter bar and by throwing in the clutch 52 and by applying the friction mechanism 43 the cutter bar is swung in under the coal and locked in the desired lateral position by the pin 32. Then the chain 4 is detached from the bar and extended for wardly along the face to an anchor jack A and the clutch 43 is again applied to the feed operating member to cause the latter to draw in one end of the chain at a slow or cutting speed while the take-up member permits the other end to be paid out, the brake band 59 being released at this time and the chain be ing guided in the channel 62. If an obstruction is encountered, the friction clutch 43 is thrown out and the receding portion of the chain is extended along the machine and around the swing arm supported sprocket 33 to a jack B, as indicated by dotted lines in Fig. 6. The jaw clutch 52 is then thrown out and the clutch 53 thrown in, whereupon by applying the friction 43 the recedingporthe chain is drawn in and the advancunder control of brake the mation of mg portion paid out band 58 in such manner as to swing chine bodily from the face. By extending the chain directly to the jack B, as shown in Fig. 7, the other end of the machine may swung bodily from the face. Fig. 8 also shows the machine cutting and swinging out at the opposite face the operation being sim ilar to that shown in Figs. 6 and 7 7 Referring more particularly to Figs. 3. i 5 and 9 it will be noted that the machine shown arranged to make a room and pillar cut. In this disposition of parts, it will be noted that the cutterbar is swung in line with the longitudinalaxis of the machine and. the advancing portion of the chain extended beneath the feed operating member 54;, up: ward over the idler 61, forwardly toward the front of the machine,v and then around the swing arm supported sprocket 33 laterally along the face to the rib, while the receding portion extends upwardly-from the sprocket 54; and transversely across the top of the machine in the guide channel 62 and then downwardly under the take-up member 55, upwardly and forwardly around the idler 63, downwardly and rearwardly beneath an idler 64, around guiding rolls 65 and 66 and then laterally to the opposite rib. Obviously by reversing the arrangement of the feed chain 3 the machine'may cut from left to right.

In the-operation of my improved construction when used forroom and pillar cutting, the machine when unloaded from its truck (not shown) is prefer bly first brought up to a position adjacent the face shown in full lines in Fig. 9 and theadvancing portion of the chain 4 is then attached to a jack A at the left hand rib while the receding portion attached to a jackB at the right hand rib.

V The motor is then started and the cutter chain clutch thrown in to actuate the cutter chaln. The aw clutch 52 is then thrown out and the 3aw clutch 58 thrown in whereupon by applying the friction clutch 43 the bar is sumped in under the coal, the take-up member 55 drawing in the chainv at a slow feed while the feed operating member slowly pays it out under control of brake band 58.

After sumping, the jaw clutch 53 is thrown out and the clutch 52 is thrown in and by then applying the friction 1-3 the machine is straightened up and caused to cut transversely across the face at a "cutting speed, its position during that out being. indicated in dotted lines. hen the machine reaches the end of its transverse cut, it is angled and backed out in a well known manner. Further, by applying the friction 38 the machine may be drawn around the mine at a fast or haulage speed. A sprocket 55, shown in Fig. 1 may also be detachably secured to the take-up member 55 to drive its transport v truck, in a well known manner. Obviously, I

when the machine is cutting in the opposite direction the truck driver sprocket may be removed or transposedto the opposite side of the machine.

From the foregoing, it will be seen that this form of my invention provides a machine having feed operating and take-up members thereon which is adapt-ed for either the longwall or room and pillar method of mining and one which is capable of cutting in either direction and at a speed which is subject to considerable variation and which may be readily controlled, said machine also having provision whereby it is made capable of furnishing power to propel its transport truck about the mine. It will also bev seenthat this wide adaptability of the machine is obtained by means of relatively simple and compact feeding mechanism. In Figs. 10, lland 12 I haveillustrated a modified construction, my invention being shown therein as applied to a room and pillar machine. In this construction it will be noted that an electric motor 67 is disposed trans- 'versely of the front end of the machine frame, the motor being over the cutter bar 68 as usual in room and pillar machines. and that driving connections are provided between this motor and a feeding mechanism, similar to that previously described, and between the motor and a'cutter chain driving sprocket 69 located beneath the rear of the machine M and driving a cutter chain 7 0 on the bar 68. Referring more specifically to these connections, itwill be noted that herein the motor armature shaft carries a single pinion 71 meshing with an intermediate spur gear 72 suitably ournaled on a transverse axis in the frame and in turn meshing witha like spur gear 73 keyed to a transverse shaft; M disposed between the mechanism previously mentioned. As illustrated, this shaft .74 is journaled at its opposite ends in the. opposite sides of the frame and carries a plurality of bevel pinions 75, 7 6'adapted to cooperate selectively with an upstanding bevel gear 77 operatively connected to the cutter chain driving'sprocket 69, the direction of rotation of the latter depending upon the positionv of a clutch member 78 splined to the shaft and having clutch teeth on opposite ends adapted to engage the members 7 5, 76. Thus it will be evident when :motor' and the feeding.-

7 9, it is possible to drive or disconnect the cutter chain 70 whenever desired or to rotate .the cutter chain in different directions without reversing the direction of the motor. Op eratively connected tothe shaft 7 f so as to be driven thereby whenrdesired and whether the cutting mechanism is operating or thrown out of operation, is the feeding mechanism previously mentioned. In this construction it will be noted that a pinion 80 is keyed to the shaft 7 4 and meshes directly with the fast feed gear 36 of the feeding mechanism. It will also be noted that the opposite end of the shaft carries pinions 81 and 82 and a larger spur gear 83 meshing respectively with the gears46, 47, 49 of the slow feed mechanism, the pinion 81 beingfixed to the shaft and driving the remainder of the gears to effect a slow speed drive ofthe shaft 87.

In theoper'ation of this construction it will be evident thatthe same will be substantially like that-described in connection With'Fig. 9,

' and that, except as made necessary by the differences indicated, the feeding mechanism common to the two forms of my invent1on will operate in a generally similar manner and be similarly controlled. It will also be 'evident'thatw'ith such a construction it is made possible to operate the feeding and cutt1ng mechanism in opposite directions without reversing the-motonthe feeding mechanism being reversely'operative by reversing provided with a transp'osable front guide 84 corresponding to the guide33 previously described. 'It will also be observed that as a result of the possibility of'employing a motor constantly rotating in thesame direction, it

is'made possible'to eliminate any'necessity for the provision of a reversible "motor or reversing mechanism therefor, the motor being capable of being controlled through a simple stopping and starting controller indicated at 85. Attention is also directed'to the fact that inasmuch as themotor may operate continuously at full speed when'desired, i. e. not

only during cutting but during unloading, loading, andtransp'ortfitis made possible 'not onlyto eliminate the difficulties arising from'making and breaking of circuit connections and thereby render the machine more safe foruse in gaseous mines, but also to simplify the controlling mechanism. These and other advantages of my improved construction will, however, be clearly apparent to those skilled in the art.

While I have in this application specifically described two forms which my invention may assume in practlce, 1t Wlll be understood that these forms of the same are shown for purposes of illustration and that the invention may bemodified and embodied in various other forms without departing from its spirit orthe scope of the appended clalms.

lVhatI claim as new and desire to secure by Letters Patent is:

'lfln'a mining machine, a motor, cutting mechanism driven thereby including a piv- 'otedcutt'erbar," feeding mechanism including a feed operating-member and a take-up member each rotatable on a transverse axis, a shaft rotatable therewith, and means for driving either member including variable speed driving connections between said shaft and motor.

2. In a mining machine, a motor, cutting mechanism driven thereby including a pivoted cutter bar, feeding mechanism including a feed operating member and a takeup member each arranged on a transverse axis, and variable speed connections between each of said members and said motor including means to drive said members simultaneously or independently.

3. A mining machine having reversible cutting mechanism thereon, feeding mechanism thereon including a feed operating member and a take-up member, said members having the same mode of operation in either direction of cutting of said mechanism, a driving motor operatively connected to said members, and mechanism for enabling said machine to cut in opposite directions in accordance with the room and pillar system without reversing said motor.

4. A mining machine having reversible cut ting mechanism thereon, feeding mechanism thereon including a feed operating member and a power driven take-up member, both said feed operating and take-up members being rotatable at a similar cutting speed, a driving motor operatively connected to said members, and mechanism including means for reversing said cutting mechanism for enabling said machine to cut in opposite directions in accordance with the room and pillar system without reversing said motor or the direction of rotation of said feed operating and take-up members.

5. A mining machine normally slidable upon a mine bottom having reversible cutting mechanism thereon, feeding mechanism thereon including a feed operating member and a power driven take-up member, both said feed operating and take-up members being rotatable at a plurality of speeds including a cutting speed, a driving motor operatively connected to said members, and mechanisln including means for reversing said cutting mechanism for enabling said "machine to cut in opposite directions in accordance with the room and pillar system without reversing said motor or the direction of rotation of said feed operating and take-up members.

6. A mining machine normally slidable upon a mine bottom having reversible cutting mechanism thereon, feeding mechanism thereon including a feed operating member and a take-up member, a motor for driving said mechanisms, and mechanism for ma bling said machine to cut in opposite directions in accordance with the longwall system without reversing said motor or the direction of rotation of said feed operating and take-up members.

7 A mining machine normally slidable upon a mine bottom having reversible cutting mechanism thereon, feeding mechanism thereonincluding a feed operating member and a take-up member, a motor for driving. said mechanisms, and mechanism for enabling said machine to cut in opposite directions in accordance with the room and pillar system without reversing the direction of rotation of said members during power drive thereof.

8. A mining machine normally slidable upon amine bottom having reversible cut ting mechanism thereon, feeding mechanism thereon including a feed operatingmember and a take-up member, each adapted to cooperate with flexible feeding means, a motor for driving said mechanisms, and mechanism including means for reversing said outtingmechanism for enabling said machine to cut in opposite directions in accordancewith the longwall system of the room and pillar system without reversing said motor or rereeving said flexible feeding means relative to said members.

9. A mining machine normally slidable upon a mine bottom comprising reversible cutting mechanism including a pivoted cutter bar, feeding, mechanism including a feed operating member and a take-up member, a motor for driving said, members, mechanism for driving said cutting mechanism in opposite directions without reversing said motor, and means for feeding said machine in either direction during cutting. in accordance with the longwall system without reversing said motor or the. direction of rotation of said:

feed operating and takeeup members.

1 0.. A mining; machine normally slidable upon a mine bottom comprising reversible cutting mechanism including; awpivoted cutter bar, feeding mechanism including a feed operating member rotatable on a. horizontal axis, a motor, mechan sm for driving saidcutting mechanism in- -o aposite directions without reversing said motor, 'a'ilexible feedmember cooperatingw-ith said feed ,operating membenandmeans: for feeding said machine iii-opposite. directions during cutting in accordancewith the vlongwall system without reversing said motor or saidfeed op erating member or changing the arrangement of said flexible member on said feed operating member.

12. A mining machine comprising revers ible cutting mechanism including a pivoted cutter bar, feeding mechanism including a feed operating member rotatable on. a horizo tal axis, a-motor, mechanism for driving s i i tions without reversing said motor, a flexible feeding member cooperating with said feed operating member, and means-for feeding said machine in opposite directions during cutting in accordance with the longwall system without reversing said feed operating member or changing the arrangement of said flex-ible member bar. I

13. A mining machine comprising revers= ible cutting mechanism including a pivoted cutter bar, feeding mechanism including a on said feed operating memfeed operating member rotatable on a horizontalaxis, a motor, mechanism for driving said cutting mechanism in opposite directions Without reversing said motor, aflexible feed mg member cooperating with said feed opcrating member, and means for feeding said machine in opposite directions during cutting in accordance with the longwallsys tem without cleversing said motor or said cutting mechanism in opposite direcfeed operating member or changingvthe arrangement of said flexible member on said feed operating member, said means likewise:v

having provision for rotating said feed operating member at a plurality of speeds in the same direction.

14. A mining machine comprising revers ible cutting mechanism including a' pivoted. cutter bar, feedmg mechanlsm including: a

feed operating member and a take-up member, a motor, mechanism for driving said cutting. mechanismin opposite directions with at reversing said motor, a flexible feeding member cooperating with said feed operating member and take-up member, andmeans for feeding said-machine in opposite directions during cutting in accordance with the longwall system Without reversing said motor or said feed operating bers.

15. A mining machine comprising revers ible cutting mechanism including a pivoted cutter bar, feeding mechanism including a feedoperating member and a take-up member, amotor, mechanism for driving said cutting mechanismin opposite directions: with= out reversing said motor, a. flexible feeding member cooperating with said feed operat- 7 mg member and atake-up member, and'means' for feeding said machinein opposite'direc tions during cutting in accordance with the 'longwall system without reversing said motor or said feed operating or take-up mem-- bersorchanging; the arrangement of said and take-up mem its bar, means for driving the same from said motor, feeding mechanism, and means to drive said feeding mechanism at variable speeds from said motor, said mechanisms being driven from the same end of said motor.

17. In a mining machine, a motor disposed on an axis extending transversely of the machine, cutting mechanism including a cutter bar, means for driving the same from said motor, feeding mechanism including a rotatable feed operating member and a rotatable take-up member and cooperating flexible feeding portions, one adapted to be wound in by each member, and positively operable means driven by said motor adapted to rotate either member to wind in at a plurality of speeds.

18. In a'mining machine, a transversely disposed motor, cutting mechanism including a cutter bar, means for driving the same from said motor, feeding mechanism including a rotatable feed operating member and a rotatable take-up member and cooperating flexible feeding portions, one adapted to be Wound in each member, and positively operable means driven by said motor adapted to rotate either member to wind in at a plurality of predetermined speeds.

19. In a mining machine, a transversely disposed motor, cutting mechanism driven thereby, a feed operating member, a take up member, a single continuous flexible feeding member cooperating with both of said members having free end portions adapted to be drawn in by different members relative thereto, and means driven by said motor adapted to actuate either member to wind in either portion at variable speeds.

20. In a mining machine, a machine frame slidable on the mine bottom during the cutting operation, cutting mechanism having a power shaft disposed at one end of said machine, feeding mechanism at the opposite end thereof, and a transversely disposed motor arranged between said feeding mecha nism and shaft and operatively connected to each of the same, said mechanisms being driven from the same end of said motor.

21. In a mining machine, cutting mechanism including a pivoted cutter bar, feeding mechanism including a feed operating memher and a takeup, and a transversely disposed motor arranged between said mechanisms and operatively eonnectible to said cutting mechanism and either of said members.

22. In a mining machine, a motor having a plurality ofintermeshing rotors, reversible cutting mechanism, and means whereby the latter is alwaysdriven directly from the same rotor during either direction of operation thereof.

23. In a mining machine, a motor having a plurality of intermeshing rotors, feeding mechanism driven directly from only one of said rotors, and reversible cutting mechanism driven in either direction directly from only another of said rotors.

24:. In a mining machine, a motor having a plurality of rotors, cutting mechanism driven directly from only one of said rotors, feeding mechanism driven directly from only another of said rotors, and reversing mecha nism for one of said mechanisms disposed be tween the latter and its respective driving rotor.

25. In a mining machine, a motor having a plurality of rotors, cutting mechanism driven directly from only one of said rotors, feeding mechanism driven directly from only another of said rotors, and reversing mechanism for said cutting mechanism disposed between the latter and its respective driving rotor, said reversing mechanism including a plurality of power transmission parallel shafts.

26. In a mining machine, cutting and feeding mechanisms, said feeding mechanism including a feed operating member adapted to cooperate directly with flexible feeding means, a transverse motor, and means extending in opposite directions directly from opposite sides of said motor whereby said mechanisms may be driven thereby.

27. In a mining machine, feeding and cutting mechanisms, a transverse motor, and means extending directly from opposite sides of said motor in opposite directions and from only one end thereof for driving said mechamsms.

28. In a mining machine, a transverse motor having a plurality of rotors, cutting mechanism and feeding mechanism on opposite sides thereof, and means for operatively connecting different mechanisms to different rotors.

29. In a mining machine, a transverse motor having a plurality of rotors, cutting mechanism and feeding mechanism on opposite sides thereof, and means for operatively connecting different mechanisms to the same end of different rotors.

80. In a mining machine, a motor, cut ting mechanism driven thereby, and feed mechanism driven by said motor including a transverse shaft, a feed operating member, a take-up member, said members being arranged coaxially with said shaft, means to connect the same directly to said shaft, and friction means for simultaneously or separately controlling said members when released from said shaft.

31. In a mining machine, a motor, feeding mechanism driven thereby including a transverse shaft, means to drive said shaft from said motor at a plurality of predetermined speeds, means to vary said speeds, a feed operating member, a take-up member, said members being arranged coaXially with said shaft, and'means to releasably connect the same to said shaft for driving thereby.

32. In a mining machine, a motor, feed ing mechanism driven thereby including fast and slow speed gearing, a transverse shaft driven thereby, friction means to vary the speed of said shaft, a feed operating memher and a take-up member, said members being arranged coaxially With said shaft, means to connect said members to said shaft for driving thereby, and friction means to simultaneously or separately control said members'when released therefrom from said shaft.

38. In a mining machine, a transversely disposed fluid actuated motor, reversible cutting, mechanism, feeding mechanism includ ing a feed operating member and a take-up member, each of said members having the same mode of operation during either operation of said cutting mechanism, flexible feedi'ng means. cooperating With said members,

and means to drive said cutting mechanism and the machine during cutting in eitherdirection Without reversing said motor.

84. In a mining machine, a reversible cutting mechanisi'm'and' means for driving the same including a Worm and-Worm gear, and means having opposite directions of rotation for driving said Worm from opposite ends thereof to effect drive of said cutting mechanism in opposite directions.

85. In a mining machinc,a reversible cutting mechanism and means for driving the same including a Worm and Worm gear, means for driving said Worm from opposite ends thereof, and reversibly moving "mechanism for said cutting mechanism disposed on each end' of the driving means for said Worm to effect drive of said cutting mecha nism in opposite directions.

36. In a mining machine, a reversible cutting mechanism, means for driving the same including a transversely disposed shaft, a Worm thereon, a Worm gear meshing therewith, and means having opposite directions of rotation for driving said shaft at opposite ends of said Worm to effect drive of said cutting mechanism in opposite directions.

37. In a mining machine, a reversible cutting mechanism, a shaft directly connected to said mechanism for actuating'the same, a

Worm gear carried by said shaft,a Worm for driving said gear, and means having opposite directions of rotation for driving said Worm' from opposite ends thereof to effect drive of said cutting mechanism in a oppo site directions. I

38. In a mining machine, feeding mechanism including coaxial feed operating and take-up members disposed at the same end' of the machine, and means fordriving said members at high and low speeds, said means including high and low speed clutches coaxial With said members.

39. In a mining machine, coaxial feed operating and take-up members, means for driving said members at high and low speeds, said means including high and low speed friction clutches coaxial with said members, and V a clutch disposed between said friction clutches and each of said members.

40. In a mining machine, feeding means therefor including a transversely disposed shaft, feed operating and tale-up members carried thereby, means for driving said members at predetermined fast and slow speeds including friction clutches disposed coa'xially With said shaft.

41. In a mining machine, feeding means therefor including a transversely disposed shaft, feed operating and take-up members carried thereby, and means for driving said members selectively at predetermined fast and slow speeds including friction clutches disposed coaXially With said shaft.

42. In a mining machine, feedingmeans therefor including a transversely disposed shaft, feed operating and take-up members carried thereby, and means for driving said members at predetermined fast and slow speeds in the same direction including friction clutches disposed coanially With said shaft. I

43. In a mining machine, a reversible cutting mechanism, and feeding mechanism therefor including feed operating and take up members adapted to be rotated by power motor section being interposed between said feed and cutter carrying sections and rigidly secured thereto, a horizontal rotor element housed in said motor section and having its axis disposed transversely of the machine, a

and means permitting the removal of said rotor element longitudinally from the side of said motor section hile said sections retain their operative rigid relation.

45. In a mining machine, a motor, cutting mechanism driven by said motor, and feed ing mechanism driven by said motor including parallel shafts. rotatable on horizontal axes extendingtransversely of the'machine,

a feed perating member and a take-up member disposed coaxially with one .of said shafts, and means for driving said members at a plurality-of speeds including intermeshingl'gearing carried by said shafts, certain of.

said gears being arranged coaxially with said members, and clutches for alternatively conn cting'said coaxial ears directly to said shaft.

4-6. In a mining machine, a motor, cutting mechanism driven by said motor, and feeding mecaanism driven by said motor including parallel shafts rotatable on horizontal axes extending transversely of the machine, a feed operating member and a take-up member cisposed coaxially with one of said shafts, means for driving said members at a plural't; speeds including intermeshing 1g carried by said shafts, certain of said gears being arranged coa fially with said members, clutches for alternatively connecting said latter gears directly to said coaxial shaft, and means for independently or simultaneously connecting said members to said coaxial shaft.

l7. In a mining machine, a motor, cutting mechanism driven by said motor, and feeding mechanism driven by said motor including a shaft rotatable on an axis extending transversely of the machine, a feed operating member and a take-up member arranged coaxially with said shaft, and means for driving said members at a plurality of speeds including a fast speed gear train and a slow speed gear train, a gear of each train being disposed coaxially with said shaft, and clutches for alternatively connecting said coaxial gears to said shaft.

48. In a mining machine, a motor, cutting mechanism drive by said motor, and feeding mechanism driven by said motor includ ing a shaft rotatable on an axis extending transversely of the machine, a feed operating member and atalre-up member arranged coaxially with said shaft, and means for driving said members at a plurality of speeds including a fast speed gear train and a slow speed gear train, a gear of each train being disposed coaxially with said shaft, clutches for alternatively connecting. said coaxial gears to said shaft, means for simultaneous ly or independently connecting said mem- Jers to said shaft, and means for friotionally controlling said members when released from said shaft.

49. In a mining machine, a motor, cutting mechanism driven thereby, and feeding mechanism driven by said motor including coaxially disposed feed operating and takeup members rotatable on an axisextending transversely of the machine, and transmission means including fast and slow speed gearing ietween said members and said mofor, all of the gearing of said transmission means being disposed on axes parallel to a line parallel with said first axis.

50. In a mining machine, a motor, cutting mechanism driven thereby, and feeding mechanism for the machine including coaxially arranged feed operating and controlling members disposed at he same end of.

the machine and rotat bio on axes parallel to a line parallel wi h the motor axis and adapted to cooperate with flexible feeding means, and a plural speed driving mechanism between said motor and members including a fast speed clutch and a slow speed clutch disposed coaxially with said members.

51. In a mining machine, a motor, cutting mechanism driven thereby, and feeding meclian -m including a plurality of feed operating and controlling members disposed at the same end of the macl 'no and rotatable on axes parallel to a line parallel with the motor axis and adapted to cooperate with flexible feeding means, and a plural. speed driving mechanism between said motor and members including a fast speed clutch and a slow speed clutch disposed coaxially with said members.

52. In a mining machine, a motor, cutting mechanism driven thereby including a pivoted cutter bar, feeding mechanism including a feed operating member and a takeup member arranged on a transverse axis, and variable speed comiections between each of said members and said motor including means to drive said members simultaneously or independently and always in the same direction.

In a mining machine, a driving motor, means driven thereby for feeding said machine laterally during cutting including fast and slow speed gearing, a transverse shaft driven thereby, friction means to vary the speed of said shaft, a feed operating member and a takeup member, means to simultaneously connect said members to said shaft for rotation therewith, and friction means to control said members when released from said shaft.

5a. In a mining machine, a driving motor, means driven thereby for feeding said machine laterally during cutting including fast and slow speed gearing, a transverse shaft driven thereby, friction means to vary the speed of said shaft, a feed operating member and a talreup member, means to either selec tively or simultaneously connect said members to said shaft for rotation therewith, and friction means to control said members when released from said shaft.

55. In a mining machine of the type slidabio on its bottom on the mine bottom during its operation, a driving motor, feeding mechanism driven thereby for feeding the machine bodily laterally over the mine bottom during cutting including a transversely disposed shaft, means to drive said shaft from said motor at a plurality of predetermined speeds, means to vary said speeds, a feed operating member and a take-up member each adapted to cooperate with flexible feeding means, and means to releasably connect said members to said shaft for driving thereby.

' 56. In a mining machine of the type slidaj drixzezl yi s i'iflmeter. for. bodily leten llv. oven the.

v3 with said shaft endeach edepiged to'cqopeliaqe able. .011. its. bottomqn. the min wees? g te very. .jch.e..spee 1;ei said; f iee .Qe t ngm mben .eneeiekeep membe ea h adaptedite eoppe te ewith fl'eXi:

l feeding means, means. t eleesjebly' 391.

nest, se' c11.membe1ie.te sheik felt. driving.

ther y, nd. frictiolkel. mean .e t eleaidl memberewhen rel as d. item Sei ...e efb-.

. 57... In. a mining me hine fthe. ypeslida: bl on. its. be b mie therminebqttein dilr iit ep meiem; mefi .r.,.neu til g .m ehemema amen by. sei dme m:ineludingeherizenkelly. P jee i'ne'eet r beeend ngi ehen m. .dmethem ehme .bQttemdming cutti-Iig..inclu1i i;ng. 2L hit SPQf TQiUI E F ve ely of the... meiehine; .fe t' and. slow Sp edif ien. p re ing .elutehee erre-nged coexially withsarid ehaih v 5.8-. minineme n' .ofithe type li e: l 1 i h t -emee th m ehe temidnring. p mtiem. e meme enttine mec nism v n x e idme oryi'eelndinge her 'ze ielly projecting cutter banap d'feed' driven-by.seidmetenieri ed g1... bodily. laterally ever, the/.111; e'b ttQm during; ingin ludingtree elz ely.,. .d eesed. horizontal} sh ieed; Qpetet jeg ,membiili and e a 1 member..di pe e eeeexi h x e i e gm ns.,.e i ieste d'is 'QW S eedfiriceion. qpe iefeln-g elutehee for said members ar anged;eeaxiellywm seiifih fi -1 1: e mining. m ehine of the.. type. l dbe tem in its ope a ion, e m Q ;,,.e 1g leeeheni'em driven by saidmoterinelud a hqigizglgfgally P i e-eut en s. fie. dingm eh nis v e; said motorfmf,-fe d ng'tll ..me hine bodily. laterally OVel,-tl- 1Q mine bptjgqm 11111 1f m exiting-incl d ng, e. her zeme ;sh. it, feed.

operating and. take-11p. m mbers. e1: engedl Q" x lly .se 1=sheme eeeh. ad pted 0 cooperate with flexible ieedi'ngngeipll s, .lfill and slew speed; frieei'oneehl eheega ranged axially with said. shaftien, eentrqlling said mbers, and. eon mlling eluteheeinte fipo s d between said memberseni seiqlelut ch I I a mining:mechiney heeemb 1 ,11. with a main frame, edeptedlteresiiumn and. slide in any directiongver ,theqmillehmiom, of an elongated keli jeuttepprojeeting f erweltcfly lengthwise. 0i sa i'defpaeme'during cut; ting. aplurality 0f rotatab eieed. operating members. meunted upen. ,sei'd.v frame with thei es exte dine'.transve sely. thexeef, power. d iCes upon fil ir m fend entrelmeehe: nismada-pted. {1Q eonneehse d feed Operating members. with said pewendevieesie eeus said. memb r erevolv in. W ndi g. direetien.

i transverse. Shaffq; drixgen; thepeby,

ei hen. imul enee e y e s parately at, rele: ely high p e l 0. 1 ete eleb Yely 13 W p ed n e. eh eeh'mechenism fe eeh. eed. 91? 7 at ng member n adapted. to. enn et. said. members. eparate y or 's mu z eeusly, with sa POWQL d ices nd; be eermbiI etw fi seid fe d: Op rating me b rs. ier ependr. eni y. efieeeh. et en.

em inemachine-the embinee ee wi h feeme edjepte it mseupen; e sflijde in any (1 QQQQILQVGHYL- mineboitg a'nelongaied 1 ,gdfleeyfcufegez: projecting gl'tudlnally of said frame during cutting, pmmlity. eed pere ing .11e111be,17s,. mm 1ted on sfidlflerwwith the r xes eX engL ng,

transve s y thereo ndjhldgptedtqcg eel". te

w th flexible. i ding .meene; p e eviees. on sa;id',freme,.eent;al meclil llliisall @QBPEBCUQ. eenneeteei feed. Opera ing memberemith. said; power. de ices t9 e i ise. Said; m mbe s i0. rev v in i e ee. ei her. sigmelter eeus y 0.1: s per fqely .a-t el i yely h hepeed a; re etieelb'..leweggeeder t pemnit. to. IQZOlYB t e npwmd ng lir et ee unde irietien lly controll dre ietenee,.eec1. mews to. eontrel he. act ti eefe eh efi. eeirllmemr,

h ndep n en ly.efeeeh then 111 e me hmeb. the eezebm tlen. wi h .emeln. r me. e jeptefl; :to. res up vend eljfde, any dir et en, .evjene. mine; beitemmi e 1eetedrieii ke fe xtter.pr jecting en gi nd nelly of e idgframe during ellf itiil a plura ity of. f e l operating;membersmognt said frame. w th their. ex eeelm firehsyerseb th reef. and ed pted i 9 199 vices eeidiinelnmeellteel mecha ism meet: ed to egnneet. seld feeel" operatlng. members Wlthsel pewer cley eesfltq. cells? said mem h re. t evolvei'e Win ing d 9 i0n...-ei h e sim teeeoes y er eparately. a .r letiv ly h h ep d reenelee ze y l p d Qli O' mit them to, revolve. in the unwinding. diree: t me under .frietio elbr eentrelle r s stan r be pe mi hem t tei bre. in unwinding minebettom. lur ng ee tine riven. y said metomnddi-spesed at. h e r of aid. meter. including; a, trensvegsely dis,p0sed.,..shaf t, meenefie'drive sai sh from sai me er a plu ali y of prede erm ed pe dsrmeelle.

to varysaid speeds, gy feed opereting meme bet and. a). t1ke-up member. eechedflptdt0.

eeepevete wi .fieXi le eding m en a em A m an v t re e ebly to said shaft.

4 mining meehine, meebin am in luding meter-eas ng el leble directly-en its bottom on th mine bottom, said easing enneet sai members.

housing a motor having a horizontal power shaft, the height of the motor substantially determining the height of the machine, re versible cutting mechanism driven from one end of said motor including a forwardly prejecting cutter bar, and feeding mechanism driven from the same end of said motor and adapted to feed the machine over the mine bottom during cutting in either direction, in cluding relatively rotatable feed operating members driven by said motor and each adapted to cooperate With flexible feeding means.

65. In a mining machine, a machine frame slidable on its bottom on the mine bottom, a motor carried thereby, feeding and cutting mechanisms driven by said motor and dis posed respectively at the opposite ends of said frame, said motor being located between said mechanisms and said cut-ting mechanism including a pivoted cutter bar swingable into different positions relative to said frame, said feeding mechanism including a plurality of relatively rotatable feed operating members driven by said motor and rotatable on horizontal axes extending transversely of the machine and each adapted to cooperate with flexible feeding means.

66. The combination with a mining machine slidable on a mine bottom and flexible feeding means therefor operative to feed the same transversely of a mine face during cutting and including advance and receding flexible'feeding portions and relatively rotatable feed operating members cooperating respectively with said portions, of actuating mechanism for said feeding means including a plurality of sets of driving elements each adapted to produce a different feeding speed, a shaft on which one of the elements of each of said sets is mounted, and different friction clutches for connecting one of said last mentioned elements to said shaft.

67. In a mining machine of the type slid able on its bottom on the mine better during its operation, feeding mechanism including flexible feeding means including a plurality of flexible feeding portions, feed operating members respectively cooperating with said portions, and driving and controlling means for said relatively rotatable feed operating members including a plurality of drive trains having coaxial terminal elements rotating at different speeds, a shaft on which said terminal elements are rotatably mounted, and operative connections between. said terminal elements and said feed operating members including clutch means for separately connecting said terminal elements to said shaft and clutch means for selectively effecting driving of said feed operating members by said shaft.

68. In a mining machine, a machine frame slidable on its bottom on the mine bottom, a

horizontal motor disposed centrally on said frame and having a forwardly located motor pinion and a rearwardly located motor pinion, cutting mechanism disposed at the front end of said frame and driven from said forwardly located motor pinion and including a forwardly projecting cutter bar, and feeding means disposed at the rear end of said frame and driven from said rearwardly located motor pinion for feeding the machine bodily laterally over the mine bottom during cutting comprising a plurality of relatively rotatable feed operating members each adapted to be driven by power from said motor and disposed at the end of said frame remote from that from which said cutter bar projects, and cooperating flexible feedmg means including separate advance and recedin g flexible feeding elements extending in opposite directions from opposite ends of said frame and cooperating with said feed operating members respectively, said advance feed ing element having its free end anchored at a point in advance of the advanclngside of the machine and said receding feeding element having its free end anchored at a point in the rearof the receding side of the machine, said feed operating members being operable to independently draw in said flexible portions by power.

69. In a mining machine capable of cuttlng in opposite directions, a substantially hor zontal motor having a casing disposable directly on the mine bottom, said motor casing substantially determining the height of said machine, reversible cutting mechanism driven by said motor including a transversely disposed cuttings discharge channel and a horizontal plane cutter bar whose top and bottom surfaces lie in planes intersecting said motor, and feeding mechanism including a plurality of coaxial relatively rotatable Winding members driven by said motor.

70. In a mining machine capable of cutting in opposite directions, a substantially horizontal motor slidable directly on its bottom on the mine bottom, the height of the motor substantially determining the height of saidmachine, reversible cutting mechanism driven by said motor including a rigid horizontal plane cutter bar whose top and bottom plane surfaces lie in planes intersecting said motor and a transversely disposed cuttings discharge channel, and feeding mechanism including a plurality of coaxial transversely disposed relatively rotatable winding members driven by said motor.

71. In a mining machine, a substantially horizontal motor slidable directly on its bottom on the mine bottom, cutting mechanism driven by said motor and including a horizontal plane cutter bar disposed in planes which intersect said motor, feeding mechanism including a feed member and a take-up member driven by said motor and driving mechanism for said members and cutting mechanism,

drivingmechanism.

7- In a mining machine, a motor having a frame housing power producing means pro mechanism including a cutter carrying bar projecting from one end of said frame, feedmechanism including a feed operating member rotatable on a transverse axis at, one side of said fr'ame'and adjacent the front end thereof, and a relatively rotatable, take-up member, cooperating flexible feeding means including flexible feeding member's cooperating with said feed operating and take-up members, and guiding means on said frame cooperating with said flexiblemembers and directing'the same laterally from opposite ends of said; frame.

i l! The combination in a mining machine slid bleon its bottom on the mine bottom, of en carrying cutter bar projecting at one end of the machine, and a cooperating cutter chain driving. element, of feeding and guiding mechanism operative to feed said machine along" a facewhen said'bar" projects into the face; said mechanism including afeed operating member rotatable during-cutting along the face of an axis parallel to tl e face and the plane of said bar, and arelatively rotatable p member, flexible feeding means comprising an advance flexible feeding portion cooperating" with said feed operating memher and disposable in a single strand-connection to a fixed point in juxtaposition to the face and advance ofthe machine, a receding flexible portion cooperating with said take-up member and disposable to a fixed poin' rear of the machine, and guiding means, for said advance flexible portion including a guiding member so disposed relative to said feed operating member and so cooperating with the advance flexible" portion between the feed operating member its oint of fixation as to direct theadvance portion alongthe faceto its point of fixation substantially in a plane parallel to and adjacent the face and including the point from which the ar projects, and of a horizontalmotor operatively connected to said cutter chain element and said feedoperating and I and means todiscon'nect said cut ting mechanism and said membersfrom sa dof power ng mechanism including a cutter chain take-up member's, posed and all of said previously mentioned elements-being so disposed within the vertical limits of the motor that the height of thema' chine is substantially the height of said motor. '25. In a mining machine of the class described, the combination adapted to rest upon and slide in any direction over the mine floor, of an elongated kerf cutter projecting from said frame, two winding elements mounted upon said frame with their axes extending transversely theredevices upon the frame, clutch mechanism adapted to connect said elements with said power devices to cause said elements to revolve in winding direction either simultaneously or separately at relatively highv speed or at relatively low speed or to permit them to revolve in theunwinding direction unler frictionally controlled resistance,and means to eachof said elements independently of each other as and for the purpose set forth.

'76. In a scribed, the combination with a main frame adapted to rest upon and slide in any direction overthe mine floor, of an elongated herf cutter projecting from said frame, two winding elements mounted upon said frame with their axes extending transversely thereof, power devices upon the frame, and clutch mechanism adapted to connect saidelements with said poi er devicesto cause said elements to revolve in the winding direction either simultaneously or separately at relatively high speed or at relatively low speed, to permit them to revolve in the opposite direction under frictionally controlled resist ance or to permit-them to revolve in the unwinding direction without such resistance as and for the purpose set forth.

77. Ina miningmachine, a machine frame slid'able on its bottom on the mine bottom, a motor ca Tied by said frame,- cutting mechanism driven by said motor, and feeding means driven by said motor including relatively rotatable winding members disposed on horizontal axes extending transversely of the machine andeach adapted to cooperate directly with flexible feeding means and mechanism for e'fecting rotation of said winding members in winding direction either simultaneously or separately atrelatively high speed or at relatively low speed while said cutting mechanism is driven by the motor at a substantially uniform rate, or to pernut rotationof said members in unwinding direction under frictionally controlled resistance, or to permit rotation of said membore in unwinding direction without such resistance.

78. In a mining machine, ainachine frame slidable on its bottom on the mine bottom, a motor carried by said frame, cutting mechanism driven by said motor, and feeding said motor being so dis with a main framecontrol the actuation of I fill) means driven by said motor including relatively rotatable winding members disposed on horizontal axes extending transversely of the mchine and each adapted to cooperate directly with flexible feeding means, and mechanism for effecting rotation of said winding members in winding direction either simultaneously or separately at relatively high speed or at relatively low speed while said cutting mechanism is driven by the motor at a substantially uniform rate, or to permit rotation of said members in unwinding direction under frictionally controlled resistance.

7 9. In a mining machine, feeding mechanism including coaxial feed operating and take-up members rotating on axes lying in a line extending transversely of the machine, and means for driving said members at high and low speeds, said means including jaw and friction clutches disposed coaxially With said. feed operating and take-up members.

80. In a mining machine of the class de scribed, the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated kerf cutter projecting from said frame, two winding elements mounted upon said frame with their axes extending transversely thereof, power devices upon the frame, and mechanism for connecting said elements with said power devices to cause said elements to revolve in winding direction either simultaneously or separately at relatively high speed or at relatively low speed, said mechanism including a shaft extending transversely of the main frame and coaxial with the winding elements and jaw and friction clutch devices coaxial with said shaft.

81. In a mining machine of the class described. the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated kerf cutter projecting from said frame and including a cutter chain, two winding elements mounted upon said frame with their axes extending transversely thereof, a motor upon the frame, driving connections between the motor and cutter chain, and mechanism for connecting said elements with said motor to cause said. elements to revolve in winding direction either simultaneously or separatelv at relatively high speed or at relatively low speed while the cutter chain is driven by the motor at a substantially uniform rate, or to permit them to revolve in unwinding direct-ion under frictionally controlled resistance or freely, said mechanism including a shaft extending transversely of the main frame and coaxial with the winding elements and jaw and friction clutch devices coaxial with said shaft.

82. In a mining machine of the class de scribed. the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated herf cutter projecting from said frame, two winding elements mounted upon said frame with their axes extending transversely thereof, power devices upon the frame, and mechanism for connecting said elements with said power devices to cause said elements to revolve in winding direction either simultaneously or separately at relatively high speed or at relatively low speed, or to permit them to revolve in unwinding direction under frictionally controlled resistance or freely, said mechanism including a shaft extending transversely of the main frame and coaxial with the winding elements and jaw and friction clutch devices coaxial with said shaft, said jaw clutch mechanisms arranged to transmit to said winding elements frictionally controlled power from said power devices.

83. In a. mining machine of the class described, the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated kerf cutter projecting from said frame, two winding elements mounted upon said frame with their axes parallel to transverse verti cal plane, power devices upon the frame, clutch mechanism adapted to connect said elements with said power devices to cause said elements to revolve in winding direction either simultaneously or separately at relatively high speed or at relatively low speed or to permit them to revolve in the unwinding direction under frictionally controlled resistance, and means to control the actuation of each of said elements independently of each other as and for the purpose set forth.

84. In a mining machine of the class described, the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated kerf cutter projecting from said frame, two winding elements mounted upon said frame with their axes parallel to a transverse vertical plane, power devices upon the frame,'and clutch mechanism adapted to connect said elements with said power devices to cause said elementsto revolve in the winding direction either simultaneously or separately at relatively high speed or at relatively low speed I to permit them to revolve in the opposite direction under frictionally controlled resistance or to permit them to revolve in the unwinding direction without such resistance as and for the purpose set forth. 7

85. In a mining machine of the class described, the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated lrei-f cutter projecting from said frame, two winding elements mounted upon said frame the opposite sides of the longitudinal vertical center thereof with their axes parallel to a transverse vertical plane, one on the adva cteaser ently of each other as and for the purpose set forth.

86. In a mining machine of the class described, the combination with a main frame adapted to rest upon and slide in any direction over the mine floor, of an elongated kerf cutter projecting from said frame, two winding elements mounted upon said frame at the opposite sides of the longitudinalverf tical center thereof with their axes parallel to a transverse vertical plane, one on the advancing side of the machine and the other on the receding side thereof, power devices upon the frame, and clutch mechanism adapted to connect said elements with said power devices to cause said elements to revolve in the winding direction either simultanenously or separately at relatively high speed or at relatively low speed to permit them to revolve in the opposite direction under frictionally controlled resistance or to permit them to revolve in the unwinding direction without such resistance as and forth.

87. In a mining machine, an elongated machine frame slidable on its bottom directly on T the mine bottom during cutting and comprising a front cutting section, a motor section and a rear feed section, said motor section being interposed between said cutting and feed sections and. resting directly on the mine bottom, the vertical dimension of said motor section being substantially only that requisite to the power producing function of the motor and substantially determining the height of the machine, a horizontal motor disposed in said motor section, kerf cutting mechanism driven by said motor including a horizontal cutter bar projecting forwardly from the machineframe, and feeding mechanism driven by said motor including relatively rotatable feed operating and take-up members carried by said feed section and independently rotatable by power and flexible feeding means cooperating with said members respectively.

88. In a mining machine, an elongated machine frame slidable on its bottom directly on the mine bottom during cutting comprising a front cutting section, a motor section and a rear feed section, said motor section being interposed between said cutting and feed sections, a horizontal motor disposed in said motor section, kerf cutting or the purpose set mechanism driven by said motor including a horizontal cutter bar projecting forwardly from the machine name, and'feeding' means driven'by said mot'or'including relatively rotajtable feed operating and take-up members carried by'sa'id feed section and independent- 1y rotatable bypower, one ofsaid members beingd sposed on the advancing side and other of said membersbeing disposed on the-receding s1de thereof, and advance and re'ce'clingiflexible feeding portionscooperat ing with said members respectively and ent'ending in opposite directions from opposite endsof the machine frame;

89. In a mining machine, ,an elongated machine frame slidable on itsbottom directly on the mine bottom during cutting'comprising a front cuttlng sect1on,a 'motorseo "tion and a rear feed section, said motor sectionbeing interposed between said cutting driven-bysaid motor including relativelyrotatable feed operating and take-upmembers members respectively and extending opposite directions from opposite ends of the machineframe.

90. In a mining machine, an elongatedmachine frame slidable on-its-bot'tom directly on t-he mine bottom during cutting compris ing alfront cutting section, a motor section 'anda rear feed section, 'said motor section being interposedv between said cutting and chine frame, and feeding means driven-by said motor including relatively'rotatable feed and feed sections, a horizontal motor. disposed 'in said motor section, =kerfcutting mechanism driven by said motor including a "horizontal cutter bar projecting forwardly "from the machine frame, and feeding means feedsections,ahorizontal motor disposed in I. said motorsection, kerf cutting mechanism drivenby said motor includingEa horizontal cutter bar projecting forwardly from the maaxes and independentlyrotatable byrpower,

and flexible feeding means cooperating with said members respectively and extending in opposite directions from'opposite ends of the machine frame. a

i i 91.- :In a mining macl1ine,an'elongated machine frame slidable on 'its bottom directly on the mine bottom during cutting comprising asfr'ont cutting section, armotor section and a rear'feed section, said motor section being interposed between said cutting and 7 feed sections, a horizontal motor disposed in said motor section, 'kerf cutting mechanism driven by said motor including-a horizontal cutter bar projecting forwardly from the machine frame, and feeding means driven by said motor including relatively rotatable feed operating and take-up members carried by said feed section and disposed on horizontal axes extending transversely of the machine frame, one on the advancing side of the machine and the other on the receding side thereof, said members being independently rotatable by power, and advance and receding flexible feeding portions engaging said members respectively and extending in opposite directions from opposite ends of the machine frame.

92. In a combined room and pillar and longwall mining machine, an elongated machine frame slidable on its bottom directly on the mine bottom during cutting and comprising a cutting section, a motor section and a feed section, said motor section being interposed between said cutting and feed sections, a horizontal motor disposed in said motor section, cutting mechanism driven by said motor including a horizontally swingable cutter bar pivoted on said cutter section, and feeding means driven by said motor including relativel Y rotatable feed operating and take-up mem ers carried by said feed section, one of said members being disposed on the advancing side of the machine and the other on the receding side thereof, said members being independently rotatable by power, and flexible feeding means cooperatingwith said members respectively. 7

93. In a combined room and pillar and longwall mining machine, an elongated machine frame slidable on its bottom directly e on the mine bottom during cutting and comprising a cutting section, a motor section and a feed section, said motor section being interposed between said cutting and feed sections and resting directly on the mine bottom, the vertical dimension of said motor section be ing substantially only that requisite to the power producing function of the motor and substantially determining the height of the machine, a horizontal motor disposed in said motor section, cuttingmeohanism driven by said motor including a horizontally swingable cutter bar pivoted on said cutter section, the top and bottom surfaces of said cutter bar lying in planes intersecting said motor section, and feeding means driven by said motor including relatively rotatable feed operating and take-up members carried by said feed section and independently rotatable by power, and flexible feeding means cooperating with r said membersrespectively.

In testimony whereof I afiiX my signature.

CHARLES F. OSGOOD.

CERTIFICATE OF CORRECTION.

Patent No. 1,804,946. Granted-May 12, 1931, to

CHARLES F. 'OSGOOD.

it is hereby certified that crrol appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 64, after "Fig. 1" insert a comma; page 5, line 22, claim 8, for "of" read or; page 9, iinc 89. claim 61, for "upwinding" readunwinding'; page 11, line 43, claim 74, for of read on; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Extent @fiice.

Signed and sealed this 6th day of October, A. D. 1931.

M. J. Moore, (Seai) Acting Commissioner of Patents.

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