US1662797A - Mining machine - Google Patents

Description

March 13,1928. 1,662,797

C; F. OSGOOD MINING MACHINE Filed Aug. 31-. 1925 2 Sheets-Sheet. 1

Patented Mar. 13, 1928.

umrao sTATJ i meant CHARII'ES OSGOODy'OF CLAREMONT, NEW HAMPI-IIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

MINING MACHINE.

.App1icationfi1ed=August 31, 1925. Serial No. 53,726. i

This invention relates-to mining machines and ,more particularly to'mining machines of'the continuous cutter type adapted to be fed laterally relative to the face of the coal to cut a substantially horizontaLkerf' thereunder. J

Theprimary object :of this invention is to provide an improved mining machine having improved feedingmeans therefor whereby the. machine may be moved about the mine at a. fast speed, sumped into the coal at a slower or intermediate speed, and fed laterally relative to :the face of the coal at a slow or cutting speed. Still another object of my invention is .to provide improved means for a mining machine of extremely compact structure whereby three distinct feedingspeeds may beobtained. These and otherobjects ofmy invention will, however, subsequently more fully'appear.

A, preferred embodiment Of'tlllS invention may comprise a main frame slidable on its bottom on the mine 'bottom and having n'iounted thereona rigid forwardly projecting cutter chain carrying cutter bar. The machine maybe propelled both during cutting and at other times preferably by one or more of a pair of flexiblefeeding members secured at their free ends atthe advancing and receding sides of the machine, respectively, and with which a plurality ofrotatable feed-operating memberscooperatein effecting feeding v:and controlling movement of the machine. A single motor preferably supplies power both to the cutting and feeding mechanisms and ismounted on the main frame at; the forward-end of the latter in a position overlying the rear endzofthe cutter bar. Power may be transmitted from the motor-to the cutting and feedingmechanisms by means including a motor pinion on the rear end of the armature shaft and improved variable speed transmission mechanism. Preferably the transmission mechanism comprises a plurality of coaxial differential mechanism disposed on a transverse axis and having driving and controlling elements associated therewith. This improved transmission mechanism may effect winding in of the flexible feeding members at a plurality of different speeds.

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

In these draw-ings,- I

stantially on line 3-3 of Fig. 1.

Fig. 4 is a detail sectional view taken-substantially on line 4-4 of Fig. 3.

Referring to the drawings, 1 designates generally a mining machine of the continuous cutter flexibly fed room and pillar type having amachine frame 2 slidable on its bottom 3 on the mine bottom. The frame 2 comprises a bed section 4, a motor section 5, and a feed and cutting mechanism carrying section 6, the sectlons 5 and 6 being mounted upon the bed section 4 and rigidly secured to the latter in any approved manner.

Rigidly secured within the bed section 4 and projecting, forwardly from i the machine frame is a cutter bar 7 about'theouter edge of which a cutter bitcarrying cutter chain 8 is ad-apted to be circulated. As shown, the motor section 5 is carried at the forward end of the machine frame. and overlies the rear end of the cutter bar 7. As illustrated,

housed within the motor section 5 is a motor 9, herein preferably of the reversible electric type, having a longitudinally ex-.

tending horizontal armature shaft 10. Se-

cured, as by a spline and screw connection 11, to the rear end of the armature shaft 10 is a spur motor pinion 12 having its reduced. hub portion journaled within ball bearings 13 suitably carried within the ma chine frame 2.

, In specifically describing the improved cutter chain actuating mechanism it will be noted that meshed with the motor pinion 12 is a spurgear 13 rigidly secured to a horizontal longitudinally extending shaft 14 disposed below and extendingrearwardly away from the armature shaft 10. The shaft 14 is journaled within ball bearings 15 carried within a bracket 16 suitably secured to the machine frame. Carried on the rear end of the shaft 14 is a bevel pinion 17 which meshes with a large bevel gear 18 splined as at 19 to avertically disposedshaft QO'jourthe cutter chain 8 in a usual manner.

naled as at 21 within the bed section 4. Suitably secured to the lower end of the shaft is a spur pinion 22 which meshes with a large spur gear 23 secured in any approved manner to a sprocket 24 which rotates on a vertical axis and which cooperates to drive Suitable clutch mechanism, not shown, of any well known form is provided between the gear 23 and the sprocket 24. i

In specifically describing the improved feeding mechanism it will be observed that disposedcoaxially with the shaft 20 and splined as at 25 to the bevel gear 18 is a shaft 26 journaled at its upper end in ball bearings 27 suitably carried by the machine frame 2. F urthermore,-s1:)lined to the lower end of the shaft 26 is a spur gear 28 which meshes at opposite sides thereof with spur gears 29 and 30 to drive the same in opposite directions. The gears 29 and 30 are suit-ably rigidly secured to the lower ends of shafts 31 and 32, respectively, and these shafts are suitably journaled in bearings 33 and 34 carried by the machine frame 2. As illustrated, rigid with and at the upper end of the shaft 31 is a spur gear 35 which drives, through an intermediate gear 36, a spur 37 loosely journaled on the shaft 26 above the gear 28. Furthermore, loosely journaled on the shaft 26 intermediate its ends is a worm 38 held in position by ra dially expansible split rings 38 while splined to the shafts 31 and 32, respectively, are

worms 39 and 40. As illustrated, the worm 38 is adapted to be selectively driven at dif ferent speeds in opposite directions from the gears 28 and 37,respectively, by means of clutch mechanism including clutch members 40 and 41 splined to the hubs of the gears 28 and 37, respectively, and these clutch members are provided with clutch i is journaled on a transversely disposed shaft 48 suitably journaled within bearings 49 carried by the machine frame 2 while the clutch member 46" is secured to a trans-v versely disposed horizontal actuating shaft 50 j ournaled at'51 at its opposite ends on the sides of the machine frame. Secured to the end of the shaft 50 at the advancing side of the machine is an operating lever 52. From the foregoing description it will be evident that when the operator suitablymanipulates the lever 52 one or the other of the gears 28 and 37 may be connected in operative driving relation with the worm 38. It is obvious that the ratio of the teeth on the gears 35 an operating lever 87.

cent hubs of bevel gears 58 and 59. Furthermore, the worms 39 and 40 are meshed with worm gears 60 and 61, respectively, arranged coaxially with the worm gear 53 and the hubs of these gears 60 and 61 are splined at 62 to the hubs of bevel gears 63 and 64, respectively, similar .to the gears 58 and 59. Meshing with the gears 58, 63 and 59, 64, respectively, are planetary bevel 'pinions 65 and 66 journaled on radially projecting stub shafts 67 supported by planet carrier members (SS-and 69. The hubs of these carrier members are splined at 70 to coaxially disposed shafts 71, 72, respectively, the latter having their inner ends journaled within a bearing sleeve 73 carried within the hubs of the bevel gears 58 and 59 while their Outer ends are journaled within sleeves 73 which rotate in ball bearings 74 supported by a detachable cover plate 75 forming a portion of the machine frame 2 It will herein be observed that splined at 76 to each of the shafts 71 and 72 is a clutch member 77 which carries a series of clutch disks 78. The disks 78 are interleaved with a series of clutch disks 79 carried by a clutch housing member 80 carried by the sleeves 73 and also journaled on a bearing sleeve 81 carried by the hub of the' member 77. As shown, journaled upon a bearing sleeve 82 carried by each. of the shafts 71, 72 is a clutch disk retaining and housing member 83 having a hub portion on which a clutch applying member 84 is slid ably mounted, the latter having projecting fingers 84 which extend throughapertures formed in the retaining member 83 into engagement with certain of the series of clutch disks 78, 79. Cooperating with the member 84 is a shipper member 85 secured to a vertically disposed actuating shaft 86 jour- 'naled within the machine frame. Suitably secured to the upper end of the shaft 86 is As illustrated, splined at 88 to the sleeves of the housing members 80 are drums 89 and 90 suitably journaledupon the side plates 75. Cooperating with the drums 89 and 90, respectively, are flexible feeding members 91 and 92 herein in the form of wire ropes or cables. Moreover it will be observed that carried by the opposite sides of the forward end of the mameme? that when the worms 38, 39, and 40 are si.-'

multaneously rotated in the same direction,

one feeding speed is obtained, While if the worms-'39 and 40 are rotated and the worm 38 held stationary another feeding speed is obtained and if the worm 38 is rotated in anopposite direction from the worms 39 and 40 a third feeding speedis obtained, the-rotationof the bevel gears-58, 59'when driven by the worm 38 in opposite directions adding to or subtracting from the speed of rotation of the planet carriers 68 and 69. It will be understood that the speeds obtainable may be widely varied by suitable alterations indriving gearing and worm inclinations', and the angular speeds of the feed operating members willbc equal to onehalf the speed of'their respectivebevel gears '63 or 64, plus or minus one-halt the speed of their respective bevel gears 58 01:59, it being of course evident that the latter speed. may

be equal to zero when the gears 58 and 59 are stationary and that the plusis used when the bevels 58'and 59 rotate in the same direction as their respective gears 63 and 64.

In the operation of-, myimproved mining machine, it will'be noted that when the ma: chine has been transported to theroom on its transport truck and unloaded therefrom, one or the other of the cables 91, SQTm-ay be extended to a point adjacent the right hand rib of the=coal and anchored by a: suitable roof jack or take up device. The clutch teeth 42 of the Clutch: member 40* are then connected to the clutch teeth 44 foru'iedzouthe worm 38; rotating the latter atits fast speed inan opposite direction from. the rotatioirof the worms 39' and 40, and consequeutly the worm gears 53, 60 and 61' and the bevel gears 58, 59, 63, and 64 are rotated together at: their respective speeds in the same direction, causing the planetary carriers to be rotated" with the bevel gears and rotating the shafts 71, 72 at a relatively: high speed. The desired feed drum 89, is then connected in operative driving relation with the driving shaft by means of the clutches 78,79 and the desired/cable wound in; and

the machine fedi toward the right hand" rib at a fast or moving speed. Vhen the cutter bar" assumes an appropriate position adjacent the' face of the coal the feed cable 91 is extended forwardly around the guide sheave 93 at the advancing side of the machine and then: laterally to the left: hand. rib

ofthe coal, the free end: of. the cablebeing anchored in. position-by a suitableiroof' jack or a take up. device. The clutch members 40 and 4 1 are then thrown into. their neutral position, it' being understood that the worm 38 is self-locking with the worm; gear 53; thus preventing rotation. of the, worm gear and'the bevel gears 58 and;- 59 atnthat time. As the worms 39 and 40 are"con-. stantly. driven, the Worm. gears 60 and 61 and the bevel gears 63 and 64 are: rotated, thus causing the planetary:pinions65 and 6.6 to react on the'stationary bevel gears58and 59, respectively, consequently causing; the planetary carriers 68, 69 to drive the shafts 7'1 and 72 at anintermediate speed. The friction clutch controllingthe drumz- 90' is then applied and: the machine sumped into the coal, the friction clutch controlling; the drum 89 maintaining a desired, controlling tension on the cable 911 at that: time. The clutch teeth 43.v are then thrown into engage.- ment' with the clutch teeth 45 formed on the worm;38 causing the latter to. be rotated at a slower speed: and inthe same direction as the rotation of the worms 39 and 40.. The bevel gears 58 and 59 are then rotated in the opposite direction. 'fromthe rotation of' the bevel. gears 63 and 64:, thus subtracting: from the speed of the planet carriers 68, causing theshafts 71,72. to be driven at a slow speed. drum .89 is then connected, causing the latter to 'wind in the cable 91% at a. slow or cutting speed and the machine is straightened up and fed laterally across the face, the .drum 90 acting on the receding cable 92. maintaining a desired controlling: tension. thereon, thus preventing the bar from being swung outwardly from the kerf.v Itxwill herein also be noted" that by suitable operation of the clutches 78, 79 controlling the drums 89 and; 90 the angle of the machine relative .to the face of the coal may be, controlled at willl Other operations oft-my improved mining machine will: be clearly; apparent to. those skilled in the art. a

While I have in this application specifically'described oneform which my invention may assume in practice, it will be understood thatv 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. I i 1 VVhat-I claim asnew and dGSlIGiOrSQCHIO by'Letters Patent is:

1.. In a mining machine, a motor, and feeding mechanism driven by said motor including coaxial elements 'rotatingon transversely extending, horizontal axcs,fplanet meanscoopcrating with said elements, and vertical worms opcratlvely I connected to said coaxia elements; respectively... 1

The clutch 78, 79 controlling; the

lilll 2. In a mining machine, a motor, and feeding mechanism driven by said motor include ing coaxial elements rotating on transversely extendinghorizontal axes, planet means cooperating with said elements, and vertical worms rotatingoir axes lying in the same transversely extending plane operatively connected to said coaxial elements respec tively.

3. In a mining machine, a motor, and feeding mechanisi'n driven by said motor includ' .ing coaxialvclements rotating ontransversely extending horizontal axes, planet means cooperating with said elements, vertical worms operatively connected to said coaxial elements,and means for rotating one of said worms in opposite directions.

4. In amining machine, a motor, and feeding mechanism driven. by said motor including coaxial elements rotating on transversely extending. horizontal axes, planet means cooperat-ing'with said elements, vertical worms operatively connected to said coaxial elements,-and means for rotating one of said wormsin opposite directions at different speeds.

5. In a n'iiningmachine, a motor, and feeding mechanism driven by said motor including coaxial elements rotating on trans- .versely extending horizontal axes, planet means cooperating w th said elements, vertical Worms operatively connected to said coaxial elements, and means for rotating one of said Worms continuously and the other at will. i i

6. In a mining machine, a -motor, and feeding mechanism driven by said motor including coaxial elements rotating on trans-' versel-y extending horizontal axes, planet .means co-operating with said elements, ver tical worms operatively connected to said J coaxial elements, and means for rotating one of said worms continuously and the other at will in either direction.

7. In a mining machine, a motor, and feeding mechanism driven by said motor including like coaxial elements rotating on transversely extending horizontal axes, planet meanscooperating with said elements,and vertical WOIHlS operatively connected to said coaxial elements respectively.

S. In a mining machine, a motor, and feeding mechanism driven by said motor including like coaxial elements rotating on transversely extending horizontal axes, planet 'means cooperating with said elements, and

vertical Worms rotating on axes lying in the same transversely extending plane opera tively connected to said coaxial elements respectively.

t). In a mining machine, a motor, and feeding mechanism driven by said motor includ ing like coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with said elements, verti- 'ol said worms in opposite directions at different speeds it i 11. In a mining machine, a motor, and feeding mechanism driven by said motor including like coaxial elements rotating on transversely extending horizontal axes, planet means cooperating with said elements, vertical worms operatively connected to said coaxial elements, and means for rotating one of said worms continuously and the other at a will. r a

'12. In a mining machine, a motor, and

feeding mechanism driven by said. motor ineluding like coaxial elements rotating on transversely extending horizontal faxes, planet means cooperatingwith said elements, vertical worms operatively connected to said coaxial elements, and means for rotating one 'of said worms continuously and the other at will in either direction 13. In a mmmg machine, feed ng mechanism including a plurality of pairs of co axial element-s rotating on horizontal transversely extending axes, planetmeans coopcrating with the elements of each pair, and means for rotating saidcoaxial elements including worms rotating on vertical axes, one of said worms driving an element of each pair. 2 i, .7 a

14. In a mining machine, feeding mechanism including a plurality of pairs of co axial elements rotating on horizontal transversely extending axes, planet means coopcrating with the elementsof each pair," and means for rotating sald coaxlal elements 111- cludmg worms rotating: on vertical axes lying in the same transverse plane, one ofsaid worms driving an element of eachpairhp 15. In a mining 'machlne, feeding mechanism including a plurality of pairs of coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the centrallworm driving an element of each pair, and means for effecting rotationot said'worms including means for rotatingsaid last mentioned worm in rections. V a

16. In a mining machine, feeding mechanisms including a plurality of pairsot. coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With'the elements of each-pair,

opposite dimean? andmeans for rotating said coaxial elements including three worms rotating on vertical axes, theicentral worm driving .an element of each pair, and means for eifect'ing rotationof said worms including neans for rotating said .lastmentioned worm atrdifierent speeds.

v17. In a mining machine, feeding mechanism including a plurality of ,pairsof c0- axial elements rotating on horizontal transversely extending axes,iplanet means cooperating with the elements ofeach pair, and

means for rotating said coaxial elements in eluding three worms rotating .on vertical axes, vthe central worm driving an element ofeachpair, and means for effecting rotation of said worms including means for rotating said .last mentioned worm 'at difierent speeds in opposite directions.

18. In a vmining machine, feeding mechanism including a plurality of pairs of coaxial elements rotating on horizontal transversely extending axes, planet :means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central-Worm driving an element of-each pair, and means for effecting rotation of said worms including means for rotating said last mentioned worm in opposite.

directions or allowing it to remain stationary. y

.119. In .a mining machine, feeding mechanism including a plurality of pairs of coaxial-elements rotating on horizontal transversely extending axes, planet means cooperajting with the elements of each pain-and means for rotating said'coaxial-elements including three Worms rotating von vertical axes, the central worm" driving an element of each :pair, and means for effecting rota tion of-said wormsincluding meansfli'or rotating said last'mentioned worm at different speeds or allowing it to remain stationary.

.20. In a mining machine, feeding mechanism including :a plurality of pairsof coaxial elements rotating on horizontal .transverselv extending axes, planet meanscooperating with the elements of each -pa1r, and means for rotating said coaxial elements including three worms rotating on vert1cal:axes, the central worm driving an element of each pair, and imeans for efi'ecting rotation oi said Worms including means for rotating said last mentioned worm-at difierent speeds in oppositedirections or allowing it to remain stationary.

21. Ina mining machine, feedingmechzn nism including aplurality of pairs of coaxial elements rotatmgon' horlzontal transversely extending .axes, planet tmeans .coopcrating with the elements of .each pair,randmeans for rotating saidcoaxialelements ineluding three worms rotating on vertical taxes, the centPal worm driving an element of :each ,pair, and means for reflecting rota.- tioniofcsaid Worms including means'for rotating said flas'tmen'tioned Worm in opposite directio'nsvand said other worms continuously in the same direction. I

22. In a miningmachine, [feeding mechanism including a plurality of pairs of coaxialeleme nts rotating on horizontal transversely extending axes, planet means cooperating with the elements o'i' each pain-and means :for rotating said coaxial elements including three Worms rotating on Vertical axes, the central Worm drivin an element of each pair, and :means for e'fi ecting rotation of'said worms including means for rotating said laSf/YIIIQIItIOIIBd worm .at [different speeds and said other Worms continuously in the same direction.

:23. Inia mining machine, feeding mechanism including a plurality of pairs of coaxial elements rotating on horizontal trans versely extending axes, planet means cooperating with the elements of each pair, and

means for rotating said coaxial elements 'ineluding three worms rotating on vertical axes, the central Worm drivin an element or each pair, .andmeans for e ectingrotation or said worms including means for roating with the elements of each pair, and

means for rotating said coaxial elements includin three Worms rotating on vertical axes, t e central worm drlving anelement of each pair, and ,means for eflecting rota-v tion of said Worms including means for rotating said lastmentioned worm in opposlte directions or allowing 1t to remain stationaryand'sa'id other worms continuously in the :same direction.

.25, In va mining machine, feeding mechanism including .a plurality of pairs of coaxial elements rotating on horizontal transversely extending vaxes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including :three worms rotating on vertical axes, the; central worm driving an element :of each pan, and means for effecting .ro-

tation of said worms including means for rotating said last mentioned wormat .diiierent speeds or allowing it .to remain stationary and said other worms continuously in the same direction.

26. In "a mining @machine, .feeding .mecha- .nism including it'll plurality of pairs of :coaxial elements rotating Lon horizontal transversely extendingaxes, ,planet means cooperating with the elements of each pair, and

means for rotating said coaxial elements including three Worms rotating on vertical tion of said Worms including means tor ro-.

tating said last mentioned Worm atdifferent speeds in opposite directions or allowing it to remain stationary and said other worms continuously in the same direction. 7

27. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including Worms rotating on vertical axes, one of said worms driving an element of each pair.

' 28. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including Worms rotating on vertical axes lying in the same transverse plane, one

of said Worms driving an element of each pair.

29. In a mining machine, feeding mecha nism including a plurality of pairs of like coaxial elements rotating on" horizontal transversely extending axes, planet means cooperating with the elements of each'pair, and means for rotating said coaxial ele- ,ments including three Worms rotating on vertical axes, the central Worm drivingfan elementof each pair, and means for effecting rotation of said Worms including means for rotating said last mentioned Worm in opposite directions;

30. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With theelements' ofeach pair, and means for rotating'said coaxial elements including three Worms rotating on vertical axes, the central Worm driving an element of each pair, and means for effecting rotation of said vorrns including means for retating said last mentioned worm at different speeds. a I a 31. In a miningmachine, feeding mechanism including a plurality ofpairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating With the elements of each pair, andmeans' for rotating said coaxial ele ments including three Worms rotating on vertical axes, the central Worm driving an element of each pair, and meansfor effecting rotation vof said Worms including meansfor rotating said last mentioned Worm at different speeds in opposite directions.

32. In a mining machine, feeding mechanism including a plurality of pairs or like to:

axial elements rotating on horizontal transversely extending axes, planet means cooper-- ating with theelements of each pair, and

means for rotating said coaxial elements in cludin three Worms rotating 011 vertical axes, t e central Worm driving an element" of each pair, and means for effecting rotation of said Worms includingmeans for rotating said last mentioned Worm in opposite directions or allowing it to remain stationary. 33. In a mining machine, feeding mechanism including a plurality of pairs of like.

coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elementsof each pair, and means for rotating said coaxial elements including three Worms rotating on vertical axes, the central Worm driving an elementof each pair, and means forefi'ecting rotation of SZLld WO111'lS including means for rotating said last mentionedworm at different speeds or allowing it to remain stationary.

8 In amining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on"horizontal 35; In a mining machine, feeding mocha nism including a plurality of pairs of like coaxlal elements rotating on horizontal transverselyextending axes, planet means cooperating with the elements ofeach' pair,

and means for rotating said coaxial elements including three worms rotating on vertical axes, the central Worm drivingan element of each pair, and means for effecting rotation of said Worms'including means for rotating said last mentioned Worm in opposite directions and said other wormscontinuously in the same direction.

36. In a mining machine, feeding mechanism including "a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on vertical axes, the central Worm driving an element of each pair, and means for-effecting rotation of said worms including means for rotating said last mentioned Worm at different speeds and said other worms continuously in the samedirection. i i i 37. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontalmeme? 7 transversely extending axes, planet means cooperating with the elements of each pair, and means for rotatingsaid coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, and means for effecting rotation of said Worms including .meansforrotating said lastmentioned Worm at different speeds in opposite directions "and saidother orms continuously in the same direction.

38. In a mining machine, feeding mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means coope 'ating With'the elements of each pair, and means for rotating said coaxial'elements including three Worms rotating on vertical axes, the'central worm driving an element'of each pair, and means for effecting-rotation otsaid Worms including means for rotating said last mentioned avorm in opposite directions or allowing it to remain stationary and said other worms continuously in the same direction. f

'39. In a mining machine,feeding mechanism including a plurality of pairs of like coaxial elements rotating on? horizontal transversely extending axes, planet means cooperating With the elements of each pair, and means for rotating said coaxial elements including three -WOII1'1S rotating-on vertical axes, the central Worm driving an element of each pair, and means for effecting rotation of said worms including means for rotating said last mentioned Worm at different speeds or allowing it to remain stationary and said other Worms continuously in the same-direction.

40. In a mining machine, feeding'mechanism including a plurality of pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperatingwith the elements of each pair,

and means for rotating said coaxial elements I including three Worms rotating on vertical axes, the central Worm driving an element of each pair, and'means 'for efiecting rotation of said Worms including means for rotating said last mentioned worm at dif fer'ent speeds inopposite directions or allow- 'ing it to remain stationary andsaid other Worms continuously in the same direction.

41. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements ofeach pair, and'means for rotating said coaxial elements including worms rotating on vertical axes, one of said worms driving an element of each pair. 3

' 42..In-a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial'elements rotating on horizontal transversely extending axes, planetvertical axes, the central Worm .drivifi ran means cooperating with the elements ofieach pair, and means for rotating said LCOB-Xilil elements including Worms rotating .onwrertical axes lying in the same transverse plane,

one of saidworms driving .an element each pair.

43. In a mining machine, feeding mecha-' nism including a plurality .of coaxial pairs oflike coaxial elements rotating on horizontal transversely extending axes, vplanet means cooperatng with the elements ofeach pair, and means it'or rotating said coaxial elements including three worms rotating-son vertical axes, the central worm driving ran element of each pair, and imeans/forefl'ecting rotation of said Worms including aneans for rotating-said last mentioned worm in opposite directions.

44. In a mining machine, feeding mechanism including a pluralityof coaxial airs 01'' like coaxial elements EI'OttttiIlg on iiorizontal transversely extendingaxes, :planet means cooperating with the elementslofieach pair, and means for rotating .saidcoaxial elements including three Worms .rotatinguon 45. In a mining machine, feeding :mechai nism including a plurality of coaxial pairs of like coaxial elementsrotatingon horizontal transversely extending axes,- planet means cooperating with the elements of each pair, andineans for rotating said coaxial elements including three worms rotating 3011 element of each pair, and means :for esting rotation ofsaid worms includingmeans for rotatingsaid last mentioned worm at diflerent speeds in opposite directions.

46. In a mining machine, .feedingkmec'hanism including a plurality of coaxial pairs of like coaxial elements .rotating on Ehorizontal transversely extending axes, zplanet means cooperating'Witlrthe elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes,- the central "Worm driving .an

element'of each pair, and means for eflecting rotation of said Worms including means for rotating said last mentioned :worm in. op-

positesdirections or allowing it '-to remain stationary. 1

47. In a mining machine, feeding mechanism including a plurality of coaxial :pairs of like coaxial elements rotating on horizontal transversely. extendin axes, planet means cooperating with the el ements ofieach pair, and means for "rotating said coaxial elements including :three Worms rotating on vertical axes, the central Worm drivingnn element of each pair, and :means for :effecting rotation of said worms iinclu'dingrmeans rotation ofsaid worms including means for rotating said last mentioned Worm at different speeds in opposite directions or allowing it to remain stationary.

49. In a mining machine, feeding mechanism including a plurality. of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an elementof each pair, and means for effecting rotation of said worms including means for rotating said last mentioned worm in, opposite directions and said other worms continuously in the same direction.

50. In a mining machine, feeding mecha nism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means-for rotating said coaxial elements including three Worms rotating on vertical axes, the central .worm driving an element of each pair, and means for effect ing'rotation of said worms including means for rotatingsaidrlast mentioned worm at different speeds and said other worms continuously in the same direction.

51. In a mining machine, feeding mecha nism including a plurality of coaxial pairs of like coaxialelements rotating on horn zontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, and means for effecting rotation of said worms including means for rotating said last mentioned worm at dif ferent speeds in opposite directions and said other worms continuously in the same direction. .i

52. In a mining machine, feeding mecha nism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of. each .pair, and means for effect ing rotation of said worms including means for rotating said last mentloned worm in opposlte direct ons or allowing it to remain stationary and said other Worms continu ously in the same direction.

53. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm drivin an element of each pair, and means for e ecting rotation of said worms including means forrotating said'last mentioned Worn at different speeds or allowing it to remain stationary and said other worms continuously in the same direction.

54. Ina mining machine, feeding inechanism includin a plurality of coaxial pairs-of like coaxial,elementsrotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotatingon vertical axes, the central worm driving an element of each pair, and means for effect pair, andfeed operating memberscoaxial WVllll'l said coaxial elements.

56. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements including worms rotating on vertical axes lying in the same transverse plane, one of said worms driving an element of each pair,

and feed operating'memhers coaxial with said coaxialelements.

57 In a mining machine, feeding mecha nism including a plurality of coaxial pairs 7 of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm in opposite directions, and feed operating members coaxial with said coaxial elements.

58. Ina miningmachine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm at. difierent speeds, and feed operating members coaxial with said coaxial elements.

59. In a miningmachine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each-pair, means for effecting rotation of said worms including means for rotating said last mentioned worm at different speeds in opposite directions, and feed operating members coaxial with said coaxial elements.

60. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three Worms rotating on vertical axes, the central worm driving an element of each pair, and means for effecting rotation of said worms including means for rotating said last mentioned wormin opposite directions or allowing it to remain stationary, and feed operating members coaxial with said coaxial elements.

61. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms includingmeans for rotating said last mentioned worm at diiierent speeds or allowing it to remain stationary, and feed operating members coaxial with said coaxial elements.

62. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driv ng an element of each pair, means foreiiecting rotation of said worms including means for rotating said last mentioned worm at diiierent speeds in opposite directions or allowing it to remain stationary, and feed operating members coaxial with said coaxial elements.

63. In a miningmachine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm in opposite direc tions and said other worms continuously in the same direction, and feed operating members coaxial with said coaxial elements.

64. In a mining machine, feeding-mechanism including a plurality of coaxial pairs of like coaxial elements rotating on hori-' zontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm at difierent speeds and said other worms continu ously in the same direction, and feed operating members coaxial with said coaxial ele: ments.

r 65. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of eachpair, means for eifecting rotation of said, worms including means for rotating said last mentioned worm at diiierent speeds in opposite directions and said other worms continuously in the same direction, and feed operating members coaxial with said coaxial elements. 7 I

66.. In a mining machine, feeding mechanism including aplurality of coaxial pairs of like coaxial elements rotating on horizon tal transversely extending axes, planet means cooperating with the elements of each pair, andmeans for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for eliecting rotation of said worms including means for rotating said last mentioned worm in opposite directions or allowing it to-remain stationary and said other Worms continuously in the same axes, the central worm driving an element of each pair, means for effecting rotation of said Worms including means for rotating said last mentioned worm at different speeds or allowing it to remain stationary and said other worms continuously in the same direction, and feed operating members coaxial With said coaxial elements.

68. In a mining machine, feeding mechas nism including a plurality of coaxial pairs of like coaxial elements rotating on horizon tal transversely extending axes, planet means cooperating withthe elements of each pair, and means for rotating said coaxial elements including three Worms rotating on Vertical axes, the central Worm driving an element of each pair, meansfor effecting rotation of said Worms including means for rotating said last mentioned worm at different speeds in opposite directions or allowing it to remain stationary and said other Worms continuously in the' same direction, and feed operating members coaxial with said coaxial elements. 9

69. In a mining machine, feeding mechanismincluding a plurality of coaxial pairs of like coaxial elements rotating on horizon tal transversely extendingcaxes, planet means cooperating with the elements of each pair, means for rotating said coaxial elementsim eluding worms rotating on vertical axes, one of said worms driving anelement of each pair, feed operating members coaxial with said coaxialelements, and clutch means co axial therewith.

70. In a miningmachine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, means for rotating said coaxial elements in cluding Worms rotating on vertical axes lying in the same t1'ansverse )lane, one of said worms driving an element of each pair, feed operating members coaxial with said coaxial elements, and clutch means coaxial therewith.

71. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizon tal transversely extending axes, planet means cooperatingwith the elements of each pair,

and means forrotating said coaxial'elements including three worms'rotating on vertical axes, the central Worm driving an element of each pair, means for effecting rotation of said'worms including means for rotating said last mentioned worm in opposite directions, feed operating members coaxial with said coaxial elements, and clutch means 00- axial therewith.

72. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal trai'isverseiy extending axes, planet meanscooperating with the elements of each pair, and means for rotating said coaxial elementsincluding three Worms rotatingon vertical axes, the central worm driving an element of each pair, means for effecting r0 tation of said worms including means for rotatin said last mentioned worm at different' speeds, feed operating members coaxial each pair, means for effecting rotation of,

said worms including means for rotating said last mentioned worm at different-speeds in'opposite directions, feed operating members coaxial with said coaxial elements, and clutch means coaxial therewith.

' T ll In a mining machine, feeding mechanism includinga plurality of coaxial pairs oflike coaxial elements rotating on horizontal tjransve sclyextendin'g axes, planet means cooperatingwith the elementsof each pair, and'means for rotating said coaxial elements intrluding three 'worins rotating'on vertical axes, the centralworm driving an element of each pair, means for effecting rotation of said worms including means for rotating said lastmentioned worm in opposite directions (in-allowing it to remain" stationary, feedoperatingmembers coaxial with said 00- axial elements, andclutch means coaxial therewith. i i

""75. Ina mmingma'chine, feeding mechanism including a plurality o'f-coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes,'planetmeans COOPGIiIlRlngWVltli the elements of each pair, and means for rotating said coaxial elements including three 'worms rotating on vertical axes, the central worm driving an element'of each pair, means for effecting rotation 'of said worms includ ng means for rotating said last mentioned worm at different speeds or allowing it to reinaiirstationary, feed operatlnginemhers coaxial with said coaxialelements, and clutch means coaxial there-- with. I I r 76. In a mining machine, feeding mechah saidcoaxial elements, and clutch means nism'includinga plurality of coaxial pairs of like coaxial elements rotating on horizontal transverselyextendmgaxes, planetmeans cooperating with the elements of each pair, f and means for rotating said coaxial elements in opposite directions or allowing it to re main stationary, feed operating members coax al with said coaxial elements, and clutch means coaxial therewith.

77 In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating'said coaxial elements including three worms rotating on vertical axes, thecentral worm driving'an element of 'each pair, means for effecting rotation of said worms including means for rotatmg said last mentioned worm in opposite directions and said other worms contmuously m the same d1rect1on,-feed operating members coaxial with said coaxial elements, and

clutch means coaxial therewith.

78. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on hor1zontal transversely extending axes, planet means cooperating with the elements of'each pair, and means for rotating said coaxial elements including three worms rotating'on vertical axes, the central worm driving an element of each pair, means for eflecting rotation of said worms including means for rotating said last mentioned worm at different speeds and said other worms continuously in the same direction, feed operating members coaxial with. said coaxial elements, and clutch means coaxial therewith.

79. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm at different speeds in opposite directions and said other'worms continuously in the same direction, feed operating members coaxial with said coaxial elements, and clutch means coaxial therewith.

80. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial'elements including three-worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm in opposlte'directions or allowingit to remain stationaryand said other worms continuously in the same direction, feed operating members. coaxial with said coaxial elements, and clutch means coaxial therewith.

81. In a mining machine, feeding mecha nism including a'plurality of coaxial pairs I of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating wlth the elements of'each pair,

and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for effecting rotation of said worms including means for rotating said last mentioned worm'at differentspeeds or allowing it to remainstationary and said other worms continuously in the same direc tion, feed operating members coaxial with said coaxial elements, and clutch means coaxial therewith.

82. In a mining machine, feeding mechanism including a plurality of coaxial pairs of like coaxial elements rotating on horizontal transversely extending axes, planet means cooperating with the elements of each pair, and means for rotating said coaxial elements including three worms rotating on vertical axes, the central worm driving an element of each pair, means for eifecting r0- tation of said worms including means for IO- tating said last mentioned worm at different speeds in opposite directions or allowing it to remain stationary and said other worms continuously in the same direction, feed operating members coaxial with said-coaxial elements, and clutch means coaxial therewith. a r

83. In a mining machine, a motor, and

feeding mechanism driven by said motor including coaxial driving elements rotating on horizontal transversely extending axes,

horizontal transversely extending axes, planet means cooperating With said elements, and

means for effecting rotation of the central driving element in opposite directions.

86; In a mlnlng machine, a motor, and feeding. mechanism driven by said motor including coaxial driving elements rotating on horizontal transversely extending axes, planet means cooperatingwith said elements, means for eliecting rotation of the central diving element in opposite directions and at different speeds, and means for effecting rotation of the end driving elements at a constant speed in the same direction.

'88..I n a mining machine, a motor, and feeding lneclianism'oriven by said motor adapted'to cooperate with flexible feeding means andincluding coaxial driving elements and a plurality of planet mechanisms operatively connected to said .driving elements, and means 'for effecting rotation ofone of said driving elements at different speeds and in opposite directions.

89. Ina mining machine, a motor, and feeding mechanism driven by said motor adapted to cooperate With flexible feeding means and including three coaxial driving eiements,.a plurality ofplanetary mechanismsoperatively connected to said driving nisms operatively connectedtosaid driving elements, and means for effecting rotation of tivo of said driving-elements in the same direction and rotationof the other driving elements in a reverse direction and atadif tt'erent speed. 7

In testimony CHARLES oseoon.

whereof I afiix my signature.

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