US1704673A - Mining machine - Google Patents

Description

March 5, 1929. c. F. oseooo MINING MACHINE Original Filed Aug. 51, 1925 2 Sheets-Sheet 1 ZwZUrgood March 5, 1929. c. F. OSGOOD MINING MACHINE Original Filed Aug- 5 1925 2 Sheets-Sheet 2 Patented Mar. 5, 1929.

UNITED STATES 1,704,673 PATENT OFFICE.

CHARLES I. OSGOOD, F CLAREMONT, NEW HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COIVIPANY, A CORPORATION OF MASSACHUSETTS.

MINING MACHINE.

Application filed August 31, 1925, Serial No. 53,727. Renewed January 31, 1-928,

This invention relates to mining machines, and more particularly to mining machines of the room and pillar type in which a machine having a cutter bar extending in rigid longitudinally prog'ecting relation thereto during cutting is fed and guided by one or more flexible feeding portions extending therefrom to extraneous points and controlled by feed operating and controlling mechanism cooplo crating therewith.

Among the objects of the present invention is the provision of an improved mining machine having improved feed operating and cutter driving mechanism. More specifical- 5 1y an object is to provide an improved mining machine feed operating and controlling mechanism wherein a very compact arrangement of parts is secured, in which a single friction controlled plural speed mechanism may control the operation of a plurality of feed operating members adapted to engage and coact directly with flexible feeding portions and in which the feed operating members. the power transmitting reduction mechanism, and the cutter mechanism driving mechanism may all rotate on axes parallel to longitudinally extending planes. Other objects of the invention will subsequently appear.

In a preferred form the invention may comprise a machine frame provided with feeding mechanism and having projecting therefrom cutting mechanism, and comprising a motor for actuating both the cutting and feeding g5 mechanismsf Preferably the feeding mechanism is arranged at the opposite end of the machine frame from the cutting mechanism and comprises a plurality of feed operating and controlling members rotatable on lonl gitudinally extending axes at opposite sides of the central longitudinal vertical plane of the machine frame. The actuating and controlling mechanism for the feed operating members preferably comprises a friction controlled. plural predetermined speed planetary driving mechanism with its parts rotaton horizontal axes extending longitudinally of the machine, the mechanism preferably being disposed midway between the sides of the machine frame and overlying a portion of the actuating means for the cutting mechanism. Friction means is preferably provided to connect the feed operating members separately to the feed driving mechanism and suitable guide sheaves are disposed at apill) propriate places on the machine frame to cooperate with flexible feeding portions which are engaged directly by the feed operating members.

In the accompanying drawings in which for purpose of illustration one embodiment which my invention may assume in practice is disclosed.

Fig. 1 is a view partially in plan and partially in horizontal section through a mining machine;

Fig. 2 is a View partially in side elevation and partially in central vertical longitudinal section;

Fig. 3 is a section on the line 3-3 of Figs. 1 and 2; and

Fig. 4 is a section on the line 14 of Figs.

1 and 2.

Referring to the drawings 1 designates a mining machine having a frame 2 provided with a plane bottom supporting surface 3 upon which the frame is slidable over the mine bottom during cutting. A cutter bar 4 having a circulating cutter chain 5 provided with cutting elements 6 is mounted in rigid longitudinal relation to the machine frame at the front end thereof. In a position overlying the cutter bar and at the forward end of the machine frame is a motor 7 having an armature 8 mounted upon an armature shaft 9. The shaft 9, which is suitably journaled in bearings one of which is shown at 10, carries a driving pinion 11 which drives a gear 12 keyed to a shaft 13, which is journaled in bearings 14 at opposite sides of the gear 12. The shaft 13 carries at its rear end a plurality of driving elements 15 and 16.

In addition to the cutter bar 4 and chain 5 the cutting mechanism comprises a usual cutter chain driving sprocket 17 which is arranged in a position adjacent the rear end of the machine frame 2 and in alinement with the cutter bar. The sprocket 17 is journaled for rotation upon a vertical axis and may be connected in any suitable manner for 190 driving thereby to a gear 18 which is arranged coaxially therewith. The gear 18 is engaged by a driving pinion 19 mounted upon a vertical shaft 20 which at its upper end carries a bevel gear 21. The gear 21 is driven by the driving element 15, which takes the form of a bevel pinion.

The feeding mechanism comprises a pair of feed operating members 23, 24 rotatable on parallel horizontal axes extending longitudinally of the machine frame and at the rear end of the latter. The members 23 and 24 are respectively adapted to cooperate during cutting across the face with flexible feeding means, herein in the form of rope or cable portions 25, 26. For the purpose of guiding the cable portions in the different. necessary dispositions thereof to effect the different movements of the machine which may be desired in use, there are provided auxiliary guiding sheaves including three pairs of sheaves 27, 28, 29, the former arranged intermediate the feed operating members 23, 24 and the latter respectively to the outside of and adjacent feed operating members 23, 24. Each pair of sheaves 27 28, 29 comprises a sheave arranged above the plane including the axes of the feed operating members 23, 24 and cut by a plane tangent to the top of the winding surfaces of the feed operating members and each pair also comprises a bottom guiding sheave disposed below the plane of the axes of the feed operating members 23, 24 and cut by a horizontal plane tangent to the bottommost portions of the winding surfaces of the feed operating members. In addition, guide sheaves 30 and 31 are respectively arranged on the side of the machine adjacent the rear end of the latter and at the forward end of the machine guide sheaves 32 and 33 are suitably mounted.

The feed operating members 23 and 24 are each journaled upon bearings 35 surrounding rearwardly extending bosses 36 formed upon a rear end member 37 of the machine frame. The members 23 and 24 are also keyed as at. 38 to sleeves 39 which surround other sleeve members 40. The sleeve members 40 are provided with radially extendin clutch teeth 41 and the sleeve members 39 with radially extending clutch teeth 42 which may be connected by a longitudinally slidable clutch sleeve 43 with the teeth 41. Shafts respectively numbered 44 and 45 are journaled in bearings 46 in the end plate 37 and in the rear extremities of the bosses 36, and at their rear ends are keyed to the sleeves 41 respectively associated with the feed operating members 23 and 24.

Rotation of the shafts 44 and 45 is controlled by the following mechanism: The driving element 16 is disposed below and drives a spur gear 47 which is mounted upon and keyed to a sleeve 48 carrying at its rear end a driving pinion 49. The sleeve 48 is journaled upon a bushing 50 which surrounds a shaft 51. At its forward end the shaft 51 is journaled in a bearing 52 carried by the frame of the machine. A bushing 53 surrounds the sleeve 48 immediately to the rear of the gear 47. An annular casing 55 is rotatably mounted on the exterior of the bushing 53 and has a bearing thereon intermediate the gear 47 and the pinion 49. The casing 55 comprises a web portion 55 and the cylindrical portion 55 having suitable friction band 56 on its outer periphery for controlling the rotation of the casing. Mounted within the casing and concentrically there with is a ring shaped cage 57 in which can ried a plurality of planetary gear pairs 58, 58 rotatable on suitablc pii 59 111:)Z11'11ii'il at their ends in the lateral fa of the cage. Each of the members (oi-pris s two p nions 60, 61 connected together :0 as to ro ate as a single unit. The pinien 60 of each planetary gear has a pitch-diameter larger than its companion pinion 61 and is n'icshed with the driving pinion 49. An internal gear ring 62 is arranged within the casing and keyed to rotate therewith as indicated at 63. Said internal gear meshes with pinions 60 of the planetary gears. Adjacent the internal gears 62 is a second internal gear 64 free to turn in the casing T us internal gear has a smaller diameter than the gear 62 and meshes with the pinions 61 of the planetary gear members 58. Attached to the internal gear 64 is end plate 65 having a clutch member 66 affording? a loose fit driving connection to the shaft 51, driven through one train of gears as will be shortly explained. A retaining ring 67 is attached to the periphery of the casing 55 by means of suitable bolts 67 and engages the outer face of the ring 65 to form an oil and dust proof enclosure of the gearing therein. The hi h speed connection to the shaft 51 comprises an annular clutch ring 68 seared within the cage 57 and keyed thereto. This clutch ring is provided with a plurality of inwardly extending clutch jaws 69 adapts. to engage with outwardly extending clutch jaws 0 carried by the clutch member 71 which is slidable longitudinally of the shaft 51. The clutch member 71 is splined to the driven shaft 51 so as to effect rotation of the latter and may be shifted longitudinally along the shaft by any suitable mechanism sue. as the collar and yoke device 72. In the position of the clutch mechanism 71 illustrated in Fig. 1 the clutch jaws 70 are in neutral position, that is intermediate and disengaged from the clutch ring 68 of the high speed connection and the clutch member 66 of the low speed connection. The driving connection with the high speed and low speed connections is made by shift ing the clutch member 71 to the left or right of its neutral position. A second retaining ring 73 is attached to the outer face of the end plate 65 adjacent the clutch member to form a closure between the end plate 65 and clutch member 71. The friction band 56 may be of any suitable design and is controlled by a pair of nut members 74 pivotallv connected to its opposite ends. the nut merribers being internally threaded with threads of opposite inclination and cooperating with oppositely threaded screw portions 74 upon a transversely extending shaft 74".

Before describing the transmission mechanism between the shaft 51 and the two feed operating shafts 44, 45, the operation of the mechanism for elt'ecting rotation at different speeds of the shaft 51 may be described.

High speed drive of this shaft takes place through the pinion 49. planetary gears 60, cage 57, clutch ring 68 and clutch member 71. Vhen the clutch member 71 engages the clutch ring (as the pinion 49 rotates the plane tary gears about their respective axes and as the latter are meshed with the internal gear 62 keyed to the casing they will either rotate this casing. if the brush band 56 is loose, in the direction opposite to the direction of rotation of the pinion 49. or if the friction band 56' is tightened, umlcrgo orbital motion themselves about the axis of the pinion 49 and carry with them at an equal angular rate the cage 57 on which they are mounted. The cage 57 will of course rotate at a rate less than the rate of angular rotation of the pinion 49. The clutch ring 68 being keyed to the cage 57 will be carried tl'iercwith and in turn may be connected to the shaft 51 by means of the clutch member 71. When a slow speed rotation of the shaft 51 is desired the clutch 71 will be shifted to the right and low speed driving will then take place through gearing follows: pinion 49, planetary gears 58, pinions 61, internal gear 64, end plate clutch member 66 and clutch member 71. Under these circumstances there will be a compound epicyclic reduction and the shaft 51 will be rotated at a slow speed in the same direction it previously turned at a high speed.

The shaft 51 carries adjacent its rear end a pinion 7 5 which meshes with and is adapted to drive a pair of gears 76, 77 which respectively rotate on axes alincd with the shafts 44, 45. The gears 76., 77 surround shafts 78. 79 which are mount. :7 n bearing. carried by the main frame and which are respectively alincd with the shafts 44 and 45. The gears 70 and 77 are each adapted to be connected to their respective sl'iafts 78 and 79 by identical means and accordingly the mechanism for connecting the gear 76 to its shaft 78 will alone be described. t will be observed that the shaft 78 has keyed thereon a sleeve 82 which has a concentric enlarged portion 83 to which a series of friction clutch discs 84 are keyed. The gear 76 is supported on end nzcnihcrs 76 and 76" which respectively rotate on bushings surrounding the shaft and surrounding: the sleeve 82. and within the gear 76 and keyed thereto is a series of clutch discs ,5 interleaved with the clutch di. previousiv described. The end plate 76 is perforated and through the perforations extend inc-era 89 carried on a loading plate 90., which upon movement toward the left in Fig. 1 causes forcing of the clutch disc into frictional engagement with resultant connection of the gear to the shaft 78. The loading disc for the gear 77 is designated 91. The discs 90 and 91 may be moved to loading position by forked shifter arms 92 and 93. The arm 95 is carried by a sleeve 94 which may be rotated by ahandle 95. The arm 92 is keyed to a corresponding sleeve 96 and may be rotated by a shaft 97 coaxial will th sleeve 94 and extending through the latter and rotatable by a handle 98. Suitable pin locking means 99 may be employed to maintain the loading arms 92 and 93 in different desired positions. The shaft 74 is provided with a handle 100 which may be rotated to change the adjustment of the friction brake band 56. A. transversely extending shaft 101 having a handle 102 thereon may be employed to control the collar and yoke device 72.

The shafts 78 and 79 at their rear ends carry pinions 103 and 104 which respectively constitute the driving elements of planetary mechanisms 105 and 106. The latter each comprises an internal stationary gear 107 forming a circular trackway for planet gears ]08. The planet gears of the mechanism 105 are rotatably mounted on a carrier 109 rigid with the shaft 44 and the planet gears 108 of the mechanism 106 are similarly mounted on a carrier 110 rigid with the shaft 45. It wi l be evident that on rotation of pinions 103 or 104 the associated planets 108 will be rolled around upon the internal gears 107 and thereby rotation will be imparted to the shafts 44 or 45. The axes of the planetary mechanisms 105 and 106, the axes of shafts 4-4 and 45, the motor axis, and the axis of orbital movement of the epicyclic reduction mechanism are all parallel to the same line and lie in common horizontal plane.

The mode of operation of the mechanism described is clear from its very nature, but the sumping of the bar into the face and procedure during a portion of a transverse cut may be briefly described. It will be noted that the ropes 25 and 26 wound in the same directions upon the winding members 23 and 24, viz clockwise, looking forwai \Vith the cutter chain circulating in its orbit in a counterclockwise direction, is proper for cutting from right to left, the members 23 and 24 Will rotate countercloclnvise lookinc forward) at both fast and slow speeds. The machine may be positioned by the fast feed described, using either or both ropes and feed operating members. Preferably sumpin is then accomplished by leading the tail rope 25 forwardly to an anchor near the r b and the handle 102 having been manipulated to engage the teeth 70 and 66 the shaft 51 will be rotated at a slow speed. The clutch discs 84 and 85 may then be forced into frictional engagement and the member 23 caused to wind in the rope 25 to sump the bar under the coal. The rope 26 may be used at this time to control the angle of the machine, if desired, plate 91 loading the clutch connectlflll ing gear 77 to shaft 79 sufficiently to control the length of the rope 26 as may be necessary. To cross the face the rope 25 is led laterally to a take up member and the rope 26 is led forwardly over the sheave 81 and laterally off around the front sheave 33 to a jack in ad- .ance of the machine near the face. The feed member may then be caused to wind in rope 26 while partial loading of the clutch associated with gear 76 will control the rate of paying out of the tail rope 2:3. l rom what has been said the other possible operations will be clearly evident and the machine can obviously cut in either direction.

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

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

1. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby, a plurality of relatively rotatable feed operating and controlling members adapted to cooperate with flexible feeding means and rotating on parallel axes lying in vertical planes extending longitudinally of said machine, and means for connecting said members selectively to said gearing including friction clutches coaxial with said members.

2. In a mining machine, a motor, on epicyclic plural speed gearing dr'ven thereby. a. plurality of relatively rotatable feed operating and controlling members adapted to cooperate with flexible feeding means and rotating on parallel horizontal axes extending longitudinally of said machine, and means for connecting said members selectively to said gearing including friction clutches coaxial with said members.

3. In a. mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine. a plurality of feed operating and controlling members rotating on parallel axes lying in vertical planes extending longitudinally of said machine, and means for connecting said members to said gearing.

i. In a mining machine, a motor, an epieyclic plural speed gearing driven thereby disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine. a plurality of feed operating and controlling members rotating on parallel axes lying in vertical planes extending longitudinally of said machine. and means for connecting said members to said gearing including friction clutches coaxial with said members.

5. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine, and means for connecting said members to said gearing.

6. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine, and means for connecting said members to said gearing including friction clutches coaxial with said members.

7. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame. a plurality of feed operating and controlling members rotating on parallel axes lying in vertical planes extending longitudinally of said machine, and

loans for connecting said members to said gearing.

8. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby die-posed with its axis o f orbital movement horizontal and extending longitudinally of the machine frame, a plurality of feed operating and controlling members rotating on parallel axes lying in vertical planes extcndlongitudinally of said machine, and means for connecting i-id members to said gearing including friction clutches coaxial with said members.

9. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital moven'ient horizontal and extending longitudinally of the machine frame. a plurali y of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine. and means for connecting said members to said gearing.

10. In a mining machine, a 1notor an epici'elic plural speed gearing driven thereby disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame, a pluralitv of feed operating and controllingmembers rotating on parallel horizontal axes extending iongitudi nally of said machine. and means for connecting said members to said e. :ring including friction clutches coaxial with said members.

ll. In a mining machine. a motor, an epicyclic plural speed earing driven thereby disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame, a plurality of feed open ating and. cont oi", members rotating on 'a vertical planes extend- 1 g 5 of said machine and equidistant mom said axis of orbital movement, and means for connecting said members to said gearing.

12. In a mining machine, a motor, an epicyclic plural space-1i gearing driven-thereby disposed with its axis o1 orbital movement hori- Zontal and extending longitudinally of the machine frame, a plurality of feed operating and controlling members rotating on parallel axes lying in vertical planes extending longi tudinally of said machine and equidistantfrom said axis of orbital movement, and means for connecting said members to said gearing in cluding friction clutches coaxial with said inen'ibers.

in a mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame, a plurality of feed operating and controlling members rotating on parallel l'iorizoni'al axes extending longitudinally oi said machine and equidistant from said axis of orbital movement, and means for connecting said members to said gearing.

14. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame, a plurality of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine and equidistant from said axis of orbital movement, and means for connecting said members to said gearing including friction clutches coaxial with said members.

15. In a mining machine, a motor, and feeding mechanism driven by said motor including plural predetermined speed transmission means frictionally controlled at each of its predetermined speeds and comprising coaxial fast and slow speed clutches and a driving terminal element selectively driven through said clutches, relatively rotatable flexible feed member winding drums driven by said element rotatable on parallel axes, and a friction clutch disposed coaxially with each drum for connecting the same for driving by said terminal element.

16. In a mining machine, a motor, and feeding means driven thereby comprising variable speed transmission mechanism including coaxial driving elements, clutch means for rendering said driving elements selectively operative as the efi'ective driving element, said clutch means disposed between said driving elements, and a plurality of feed drums rotatable on spaced longitudinally extending axes and each connectible for driving by each of said coaxial driving, elements, the axes of said clutch means being parallel to said drum axes.

17 In a mining machine, a; motor having a power shaft, and feeding means driven thereby comprising variable speed transmission mechanism including coaxial driving elements coaxial with said motor Shaft re,- spectively effecting different speeds when 0pera-zive, clutch means for rendering said driving elements selectively operative asthe effective driving element, said clutch means disposed between said driving elements, and a plurality of feed drums rotatable on laterally spaced longitudinally extending axes and independently rotatable by Said, variable speed transmission mechanism.

18. In a mining machine, a motor having a power shaft, and feeding means driven thereby comprising variable speed. transmission mechanism including coaxial driving elements coaxial with said motor shaft re spectively efiecting different speeds, when. 0perative, clutch means for rendering said driv ing elements selectively operative as the eli'ec.- tive driving element, said clutch means disposed between said driving elements, and a plurality of feed drums rotatable on laterally spaced longitudinally extending axes and independently rotatable by said variable speed transmission mechanism, the axes of said clutch means being parallel to said drum axes.

19. In a mining machine, a motor, an epicyclic plural predetermined speed. gearing, 1.0.0 driven thereby, a plurality of feed operating members driven by said gearing, and separate planetary driving connections for each of said members driven by said gearing.

20. In a mining machine, a, motor, an epicyclic plural predetermined speed gearing driven thereby, a plurality of feed operating members driven by said gearing, and separate frictionally controlled planetary driving 00nnections for each of said members driven by said gearing.

21. In a mining machine, a motor, an epicyclic plural predetermined speed gearing driven thereby, a plurality of feed operating members driven by said gearing, and separate planetary driving connections for each of said members driven by said gearing and c0- axial with said members.

22. In a mining machine, amotor, an epicyclic plural predetermined speed gearing 2 driven thereby, a plurality of feed operating i members driven by said gearing, and separate frictionally controlled planetary driving connections for each of said members driven Ey said gearing and coaxial withsaid memers.

23. In a mining machine, a motor, an e icyclic plural speed gearing driven there y,

a plurality of feed operating members driven by said gearing, and separate planetary driving connections for each of said members driven by said gearing, the axis of rotation of said motor, the axes of rotation of said feed operatin members, and the axes of rotation of said p-anetary gearings being parallel to a single line.

24. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby, a plurality of feed operating members driven by said gearing, and separate planetary driving connections for each of said members driven by said gearing, the axis of rotation of said motor, the axes of rotation of said feed operating members, and the axes of rotation of said planetary gearings being parallel to the same lineand all in a common plane.

25; In a mining machine, a motor, an epicyclic plural speed gearing driven thereby, a plurality of feed operating members driven by said gearing, and separate planetary driving connections for each of said members driven by said gearing, the axis of rotation of said motor, the axes of rotation of said feed operating members, and the axes of rotation of said planetary gearings being parallel to the same line and all in a common horizontal plane.

26. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby, a plurality of feed operating members driven 'y said gearing, and separate planetary driving connections for each of said members driven by said gearing, the axis of rotation of said motor, the axis of orbital movement of said epicyclic gearing, the axes of rotation of said feed operating members, and the axes of rotation of said planetary gearings being parallel to the same line.

27. In a mining machine, a motor, an epi' cyclic plural speed gearing driven thereby, a plurality of feed operating members driven by said gearing, and separate planetary driving connections for each of said members driven by said gearing, the axis of rotation of said motor, the axis of orbital movement of said epicyclic gearing, the axes of rotation of said feed operating members, and the axes of rotation of said planetary gearings being parallel to the same line and in a common plane.

28. In a mining machine, a motor, an epiccyclic plural speed gearing driven thereby, a plurality of feed operating members driven by said gearing, and separate planetary drivin connections for each of said members driven by said gearing, the axis of rotation of said motor, the axis of orbital movement of said epicyclic gearing, the axes of rotation of said feed operating members, and the axes of rotation of said planetary gearings being pan allel to the same line and in a common horizon plane.

29. Ina mining machine, a motor, an e icyclic plural speed gearing driven there y and having incorporated therewith means whereby the same'is frictionally controlled at each speed, a plurality of feed operating and controlling members adapted to cooperate with flexible feeding means and rotating on parallel axes lying in vertical planes extending longitudinally of said machine, and means for connecting said members to said gearing including friction clutches coaxial with said members.

30. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is frictionally controlled at each speed, a plurality of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine, and means for connecting said members to said gearing including friction clutches'coaxial with said members.

31. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is frictionally controlled at each speed and disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of feed operating and controlling members rotating on parallel axes lying in vertical planes extending longitudinally of said machine, and means for connecting said members to said gearing.

32. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means 100 whereby the same is frictionally controlled at each speed and disposed with its axis'of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of feed operating 105 and controlling members rotating on parallel axes lying in vertical planes extending longitudinally of said machine, and means for connecting said members to said gearin including friction clutches coaxial with said members.

33. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is frictionally controlled at each speed and disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine, and means for connecting said members to said gearing.

34. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is frictionally controlled at each speed and disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of feed operating and controlling members rotating on parallel horizontal axes extending long1- tudinally of said machine, and means tor connecting said members to said gearing including friction clutch s coaxial with said members. 35. In a mining machine, a motor, a epicyclic plural speed gearing driven thereby and having incor irate-1i therewith means whereby the same is frirt onally controlled at each speed and disposed with its axis of orbital movement horizontal and extending longitudinally of the mac" ine frame, a plurality of feed operating and contrr i members rotating on parallel axes lying i vertical planes extending longiti linilly oi said machine, and means for connecting said members to said gearing. I 36. In a mining machine, a motor, an epicyclic plural speed gca driven thereby and having incorporated therewith means whereby the same is frictionally cc-utronedat each speed and disposed with its ax s of orbital movement horizontal and extending longitudinally of the machine ironic, :i pliu'ality of feed operating and controlling meml c rotating on parallel axes lying in vertical planes extending longitudinally of Sititl i lime, and means for connecting l mem ers to said gearing including tricion rlutrh co axial with said members.

37. In a mining ma une a motor, an epicyclic plural speed gearing i" 'iven thereby and having incorporated i: arewiih means wherebv the same is iriclionally controlled at each speed and ilispi l 1" i s orbital movement lioria, extending longitudinally of the i. me, a pluralitv of feed op control! inn members rotating on p-" horizontal axes extending longitnd lly of aid llLifflllllC, and means for connecting so? 1 members to said Qearing.

i 38. In a mining machine, 1 mot r, an op:- cyclic plural speed aring driven thereby and having incorporated therewith ans whereby the same is :titina ly 'mirol at each speed and d lift orbital movement hoi c illi l bers rotating on parallel axes lying in vertical planes extending longitudinally of said machine and equidistant from said axis of orbital movement, and means for connecting said members to said peering.

40. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is frict-ionally controlled at each speed and disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame, a plurality of feed operati n g and controlling members rotating on parallel axes lying in vertical planes extending longitudinally of said machine and equidistant from said axis of orbital movement, and means for connecting said members to said gearing including friction clutches coaxial with said members.

41. In a mining machine, a motor. an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is frictionally controlled at each speed and disposed with its axis of orbital movement horizontal and extending longitudinally of the machine frame. a plurality of feed operating and controlling memrs rotating on parallel horizontal axes exeziding longitudinally oi said machine and equidistant from said axis of orbital movement, and means for connecting said members to said gearin 4-2. In a mining machine, a motor, an epicyclic plural speed gearing driven thereby and having incorporated therewith means whereby the same is trictionally controlled at each speed and disposed with its axis of orbital movement horizontal and extending lomgitudinally of the machine frame, a plu rality of feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of said machine and equidistant from said axis of orbital movement, and means for connecting said members to said gearing including friction clutches coaxial with said members.

4-3. In a mining machine, a motor, and feeding mechanism driven thereby including an epicyclic plural speed gearing having in corporated therewith means whereby the same is trictionally controlled at each speed and (,llSPOSQLl with its axis ot' orbital movement horizontal and extending longitudinally oi the machine. and a teed operating member driven thereby rotatable on a horizontal axis and adapted to cooperate with flexible feeding means.

44. In a mining machine, a motor, and feeding mechanism driven thereby including an epicyclic plural speed gearing having incorporated therewith means whereby the stone is frictionally controlled at each speed and disposed with its axis of orbital movement horizontal and extending longitudinally of the machine, and relatively rotatable feed operating and controlling members driven thereby and each adapted to cooperate with flexible feeding means.

45. In a mining machine, a motor, and feeding mechanism driven thereby including an epicyclic plural speed gearing having incorporated therewith means whereby the same is frictionally controlled at each speed and disposed with its axis of orbital movement horizontal and extending longitudinally of the machine, and feed operating member driven thereby rotatable on an axis disposed parallel to a line parallel to said axis of orbital movement.

46. In a mining machine, a machine frame slidable on its bottom, on the mine bottom, a motor carried thereby, cutting mechanism driven by said motor including a rigid cutter bar extending forwardly longitudinally of said frame during cutting, and feeding means driven by said motor including an epieyclie plural speed gearing having incorporated therev ith means whereby the same is frictionally controlled at each speed and disposed with its axis of orbital movement horizontal and extending longitudinally of the machine, and a feed operating member driven thereby and adapted to cooperate with flexible feeding means.

47. In a mining machine, a motor, and machine feeding means driven thereby including an epicyclic plural predetermined speed gearing, a feed operating member driven by said gearing and adapted to cooperate with flexible feeding means, and a planetary driving connection for said member driven by said epicyclic gearing.

48. In a mining machine, a motor, and machine feeding means driven thereby including an epicyclic plural speed gearing having its axis of orbital movement horizontal and extending longitudinally of the machine, a plurality of relatively rotatable feed operat ing and controlling members each adapted to cooperate with flexible feeding means, and means for connecting said members to said gearing.

49'. In a mining machine, a motor, and machine feeding means driven thereby including an epicyclic plural predeteri'nined speed gearing disposed with its axis of orbital movement in a longitudinally extending vertical plane midway between the sides of the machine, a plurality of relatively rotatable feed operating and controlling members each adapted to cooperate with flexible feeding means, and means for connecting said members to said gearing.

In testimony whereof I affix my signature.

CHARLES F. OSGOOD.

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