US1704667A - Mining machine - Google Patents

Description

March 5, 1929. c. F'. osGooD MINING MACHINE Filed July 16, 1923 2 Sheets-Sheet M si@ .NANMN March 5, 1929. c. F. osGoOD MIN/ING MACHINEb Filed July 16, 1923 2 Sheets-Sheet (L Ziorney,

Patented Max-.H2151 1.929.

Urrea STATES;

. lautes? CHARLES E. oscfoon,- or cLAnEMoN'r, NEW HAMPSHIRE, AssrGNon To SULLIVAN MACHINERY COMPANY, A .coR-PoRA'rIoN or MASSACHUSETTS.

AApplication filed July 16,

. such a-machine ismaterially improved 'andA the mechanism more compact and flexible to operate'. "These land other objects and' ad-- vantages of my invention will, however,h`ere inafter more fully appear.

In the ,accompanying drawings I have shown for purposes of illustration one embodimentwhich myinv'entionmay assume in practice. A

Fig. 1 is a; planview partially in section of amining machine of the .flexibly fed type.

Fig. 2 'is a sideele'vution, partially in section,oFig.1 -.1

Fig. 3 is a diagrammatic view showingthe machine in operation inaroom.

Fig. g1 is a section online H of Fig. 1-

- In 'this illustrative construction I have shown a mining mach-ine of the room and pillartype comprising a casingl slidable o n its bottom 2 on -the mine bot-tom and movable lat- .ferally by means offeeding means'nincluding advance and receding flexible feeding portions, herein` flexible feeding members 3 and 4 in the forml of wire ropes orcables, and hav- A ing a cutter bar 5 rigidly secured within said machine f frame provided with an endless cutter bit carrying cutter chain 6. The feediiign'ieans and -the cutter chain are driven from a suitable motor 7, indicated by dot-'v 40 'ted lines in Fig. 2, which is controlled by suitable' controlling and' .reveising mechanism, generally designatedrthrough driv ing connections hereinafter 4de scribed,..afnd

connected to a Afeed operating member and a take-up member, herein in the form of drums 9 and 10, and to a cutter chain 'drieing sprock-- et 11 rotatablein bearings on a vertical-axis beneath the rear end of themachine frame..

In describing my improved construction I will firstv describe the cutter chain driving mechanism. Itvvill be noted that the armature-shaft oft-he motor A 7 is provided with a sp'ur pinion 12 which in turn meshes with a spur gear' 13 jou'rnaled on a stud 14 suitably carriedlby the frame 1.A Suitably driven .by

' inside of the machine fram-e.

MINING MACHINE.

i923. serial No. 651,829.

vertically disposed stud 17 on the rear en'd of f the machinefframe. The gear 16 'is adapted to be connected at willto the sprocket 11 by means-of a.elutch mechanism 18-` underthe control of -a shipper mechanism 19 'operated by a lever 20. su1tably carri ed on the advancooperating with this n'lechanismlis the -feeding 'mechanism'. This mechanism is herein connected to and driven by' an upstanding sleeve 21 rotatable with the bevel gear 16, the Y' same being connected by a semi-permanent clutch 22 toa sleeve. 23 having aworm24 formed thereon, the sleeve 23 in turn' being suitably journaled on a'langed bearingsleeve 25 and in' bearings, not-shown, carried within a removable cap member-. 26 carried by thev ftopof the machine frame.

v I This worm 24 meshes with a worm gear 27 disposed on a transverse horizontal axis..- As shown, the

Worm 27 is keyed, as at 28, to a'sleeve 29 which in turn drives, through a suitable planetaryv .change speed mechanism generally desig` nated 30, bevel pin- ions 31 and 32 suitably mounted on a shaft 33 secured within the machine framel and disposed coaxial with the axis of the worm gear 27. .This lanetary change speed mechanism may bec? any approved form comprising for instanc'ea central Jaw clutch member 56, longitudinally slidable on and keyed to the shaft 33'Ladaptedwhen 1n one extreme position of.movement to en gage ai mating clutch member 57 keyed to an annular frame-,member 58 carrying sets ofY coaxial planet gears '59. One ofthe latter gears engages'an vinternalgear 60 fixed to rotatably mounted drum 61 while the-other 'gear meshes with a second. internal gear 62 fixed toa rotatably mounted annular member 6.3 having jaw clu'tclrteeth fl'adaptedto be engaged by the clutch member 56 when moved Vto its other extreme position. A friction band is adapted to hold Athe drum against rota` tion when desired. .In operation ofthe device when high speed-is desired members 56 and 57 are engaged to thereby allori" the worm to drive the-planet gears E19-around the gear 60 whichis heldsta'tionary by the'frictionband. Movement'of the gears 59 thus causes rotation of the gear carrying frame 58 which being connected to the member-56 will directly drive the shaft 33 without in any way -using the right hand planet gear.- When a low speed 1S rear end of the machine frame 1.

operated through suitable toggle mechanism 36 by a lever 37 carried on the advancing side of the machine frame. The bevel pinion 3l in turn meshes with a bevel gear 38 suitably journaled on a longitudinally disposed hori- Zontal shaft 39 and which is adapted to be connected thereto by a jaw clutch 40 operated by a suitable shipper mechanism 41. Keyed 'to Athe shaft 39 is a spur pinion 42 which in turn meshes with an internal gear 43 suitably secured to the Winding drum 10. Itwillbe noted that this drum 10 is suitably journaled on a longitudinally' disposed horizont-al axis on the As shown, the bevel pinion '32 which is oppositely disposed With respect to the shaft. 33, meshes with a bevel gear 45 adapted to be connected to a shaft 46, parallel with the shaft 39, by means of a jaw clutch 47 similar to the Vclutch 40. This shaft 46 drives a spur pinion 48 which in turn meshes with an internal gear 49 suitably secured to the winding drum 9 suitably journaled on the machine frame on an axis parallel with the axis of the drum 10.

The exterior peripheries of the internal gears l 43, 49 are provided with friction surfaces 51 and 52 under the control of brake bands 53 and 54 operated through suitable .controlling mechanism by levers 55 carried on opposite sides of the machine frame, one of which 1s shown 1n Flg. 2.`

Cooperating with A the feeding mechanism and engaging the drums 9'and 10 are the ilexible feeding members or cables 3 and Hereinthe machine is shown adapted to cut from right to left and in this disposition of parts it will be noted that the advancing cable 3AeX- tends from beneath the drum 9 around a hori zontally disposed guide roll 56 and forward towards the front end of the machine and around an idler-sheave 57 laterallyr to the lefthand rim, While the receding cable extends from beneath the drum 10 laterally to the right hand rib. p l

In the operation of my improved construc- Ation the machine is preferably, when unloaded from its transport truck, not shown., brought up to the face at the right hand rib to the position indicated in full lines in Figi 3. The advancingcable 3 is then connected to the left hand rib toen anchor jack A, While thereceding cable 4 is connected-to the right hand rib and an anchor jack B. The clutch 18 is then thrown in, thereby rotating the cut- .ter chain and then by .throwing in the aw clutch 40 and throwing out the jaw clutch thrown in and the machine maybe straight- A cned upand then cnt transversely across the face of the room as indicated by the next dotted line lposition at the left, the drum 9 winding in the cable 3 While the drum 10 pays out the cable 4 under control of brake band 53. When the machine reaches the left hand rib it may be inclined relative to the rib and backed out by suitable manipulation of the clutches 40and 47 and the brake bands 53 and 54 ina Well known 'manner and returned to its truck at a high or haulage speed. During the entire cutting operation the speedl of the drums 9 and 10 is entirely under the `control of the planetary change speed mechanism 30. In the operation of my improved mechanism, it will be noted that by means of the clutch mechanism 18 the cut-ter chain driving sprocket 11 may be rotated or caused to remain idle While the motor is rnnning. Attention is also directed to the fact that by suitable manipulation of the lever 37 controlling the brake band35'it is possible described one form which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.`

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

y 1. In a mining machine, a motor having its laxis extending longitudinally of the machine, y

and feeding mechanism including relatively rotatable Winding members adapted to cooperate With flexible feeding means and rotatable on parallel horizontal axes lying in yertical planes parallel with the longitudinal axis of said motor, said members being disposed in the same transverse Zone, and driving mechanism between said motor and said members.

2. In a mining machine, a lon itudinally disposed motor, and feeding mec anism 1ncluding relatively rotatable winding drums disposed on axes disposed longitudinally of said motor and means to drive said drums from said motor. said drums being disposed substantially in the same transverse zone.

il. ln a mining' machine. a motor. feeding mechanism including relatively rotatable feed controlling elements disposed at the same end ofthe machine on longitudinally extending parallel axes and each adapted to cooperate with flexible feeding means. and driving mechanism between said motor and said elements.

l. In a mining machine. a motor. feeding mechanism including relatively rotatable feed controlling elements disposed at the same end ofthe machine on longitudinally extending parallel axes and each adapted to cooperate with flexible feeding means. and variable speed driving mechanism between said motor and said elements.

'5. In a mining machine. a motor extending longitudinally of the machine. feeding meehanism including a plurality of relatively rotatable feed controlling elements each adapted to cooperate with flexible feeding means and disposed at the rear end of the machine on axes parallel with the longitudinal axis of saidanachine. and means to drive each of ,said elements from the rear end of said motor at a plurality of predetermined speeds.

(i. In a mining machine. a motor extending longittulinally of the machine. feeding mechanism including relatively rotatable feed controlling elements each adapted to cooperate with flexible feeding means and disposed at the rear end of the machine on axes parallel with the longitudinal axis of said machine. means to drive each of said elements from the rear end of said motor at a plurality of predetermined speeds. and means to vary said speeds.

T. In a mining machine, a motor feeding mechanism including relatively rotatable windingr drums disposed side-byfside on parallel axes extending longitudinally of said motor and substantially in the same transverse zone, driving mechanism between said motor' and drums to drive the latter. means to vary the speed. of said driving mechanism, and means to control rotation of said drums.

8. In a mining machine. a frame having relatively rotatable feed operating and takeup members thereon each adapted to cooperate with flexible feeding means and rotatable on longitudinally7 extending parallel axes at the same end of the machine and having surfaces adapted to engage flexible feeding means. and guiding means disposed on each side of the axes of said feed operating and take-up members.

E). In a mining machine, a motor having its axis extending longitudinally of the machine, a feed operating member and a relatively rotatable take-up member each adapted to c0- operate with flexible feeding means and disposed on longitudinal axes parallel with the axis of said motor. and driving mechanism for said members including variable speed planetary gearing common to both of vsaid members.

lll. In a mining machine, a frame. relatively rotatable feed operating elements each adapted to cooperate with flexible feeding means carried by said frame and disposed on parallel axes extending longitudinally of the machine, and driving mechanism between Asaid motor and said feed operating elements including variable speed planetary gearing common to both of said elements.

11. In a mining machine, a frame, relatively rotatable feed operating elements carried thereby disposed on axes extending longitudinally of the machine and each adapted to cooperate with flexible. feeding means. and driving mechanism between said motor and said elements including a variable speed mechanism common to both of said elements and disposed on a transverse axis.

12. In a mining machine. a motor, a feeding mechanism including relatively rotatable winding drums disposed on axes extending longitudinally of the machine. and driving mechanism therefor including frictionally controlled planetary gearing common to both of said drums.

15%. In a mining machine, cutter chain driving mechanism, feeding mechanism therefor including a feed operating,member and a relatively rotatable take-up member both disposed at the rear of the machine and on axes extending longitudinally of the machine and adapted to cooperate with flexible feeding means, planetary driving means for said members, and means to drive said members independently or simultaneously at va,- riable speeds.

14. In a mining machine, a frame slidable on its bottom on-the mine bottom during operation of the machine and larrying a motor. Athe axis of said motor being horizontal and extending longitudinally of the machine, feeding mechanism for feeding the machine bodily laterally over the mine bottom during the cutting operation including relatively rotatable winding members rotatable on axes disposed in upright planes paralel to the axis of said motor and on opposite sides of said axis, and means to drive said members at variable speeds including frictional means common to both of said members for controlling rotation thereof.

15. In a mining machine, a frame slidable on its bottom on the mine bot-tom during operation of the machine and carrying a motor, feeding mechanism for feeding the machine bodily laterally over the mine bottom during the cutting operation including a shaft, relatively rotatable winding drums rotatable on axes disposed in upright planes parallel to fir'l the longitudinal axis of said machine and on opposite sides of said axis and angularly disposed to the axis of said shaft, and mean.-l te drive eat-h ci' said drums atI a plurality of piedetifisninstl zllpeeds.

lti. li; a mining machine, a longitudinally dispo-'ed motor, and feeding mechanism including a feed operating member and a take-- up member each adapted to cooperate with tlexlble feeding means and rotatable on laterally spaced longitudii'ially extending horizontal axes on the rear end of ,said machine.

li'. The combination with a mining machine, of feeding mechanism therefor including relatively rotatable feed controlling members disposed aty the same end of the machine and adapted to cooperate with fiexible feeding means and rotatable about longitudinally extending parallel axes, and actuating means for said feeding mechanism including a worm disposed between the axes of and common to both of said members.

18. The combination with a mining machine, of feeding mechanism therefor ineluding relatively rotatable feed controlling elements each adapted to cooperate with ilexilfl-e feeding means and disposed at the same end of thermachine and rotatable on longitudinally extending parallel axes, and actuating means therefor including driving mechanism disposed substantially in a zone between the axes of said members.

19. A mining inachine having relatively rotatable feed controlling elements each adapted to cooperate with flexible feeding means and disposed atl the same end of the machine and rotatable on longitudinally extending parallel axes. cutting mechanism, and actuating means therefor including a Substantially vertical .shaft and driving connections between said shaft and said members including a worm carried by said shaft.

20. A mining machine having feedingv means therefor including a plurality of relatively rotatable feed controlling members each adapted to cooperate with flexible feeding means and disposed at the same end of the machine and rotatable on substantially longitudinally extending axes, actuating means therefor including a plurality of shafts also disposed substantially longitudinally of said machine, and a shaft common to each of said other shafts for driving the latter and angularly disposed relative thereto. t

2l. In a mining machine, a frame slidable on its bottom on the mine bottom during operation of the machine, cutting mechanism carried their-tyv including a cutter bar projecting froifi on-V end thereof, and feeding means for beting; the machine bodily laterally over the mine letton; during the cutting operation including a toed continiling'member adapted to ennp'i'fmaitht'le\hle feeding means and rotatable about a horizontal l at the end of the mat-nine op- ..roin :said cutter bar in a vertical plane um; longitudinally of the macltire, Iraans therefor including :i friial! in the saine general direction ag tie axis of said member, second shaft disposta! transversely of said plant ars mounted di rectly on (each of said shxr fts and meshing with each other, and :t third shaft having its axis angularlji dit-spescil to the axes ef each of .said other shaits and gearing between said second and third shafts.

ln a mining machine. a plurality of relativel)v rotatable feed controlling elements each adapted to cooperate with flexible feeding means rotatable on longitudinally extending axes and in substantially the same transverse Zone, power means for selectively driving either of the same. and means for frictionally controlling either of said elcments when the other is boing power driven.

23. In a mining machine, a plurality of relatively rotatable feed controlling elements each adapted to cooperate with flexible feeding rmeans and rotatable on substantially parallel axes extending longitudinally of the machine and disposed at the same end of the machine, and means for frictionally controlling eaeh of the same including actuating means for said elements disposed in a single plane.

24, In a mining machine. feeding mechanism therefor including a plurality of relatively rotatable feed controlling elements each adapted to cooperate with flexible feeding means and disposed on parallel axes extending longitudinally of the machine at the saine end of the machine, power means for driving each of the same, and frictional means for controlling the same independently or simultaneously.

25. In a mining machine, a horizontal motor, and feeding mechanism including relatively rotatable feed operating and controlling members each adapted to cooperate with flexible feeding means and disposed vsideby-side on parallel axes disposed parallel with the longitudinal axis of said motor and in substantially the same transverse zone, and driving mechanism between said motor and members. I

26. In a miningmachine, ahorizontal motor having its axis extending longitudinally of the machine, and feeding mechanism driven by said motor including relatively rotatable feed operating and controllingr members each adapted to cooperate with flexible feeding means and disposed on axes parallel with the longitudinal axis of said motor and in substantially the same transverse zone.

27. In a mining machine, a horizontal motor, and feeding mechanism including relatively rotatable feed operating and controlling members each adapted to cooperate with flexible feeding means and disposed side-byside on parallel axes disposed parallel with the longitudinal axis of said motor and at the same end of the machine, and driving mechanism between said motor and members.

28. In a` mining machine, a motor having its axis of rotation extending longitudinally of the machine, a plurality of relatively rotatable feed operating and controlling members each adapted to cooperate with'flexible feeding means and disposed on axes extending longitudinally of the machine and parallel with the axis of said motor, said members being disposed at Ithe same end of the machine, and driving mechanism for said members including variable speed planetary gearing common to both of said members.

29. In a mining machine, a frame slidable on its bottom on the mine bottom during operation of the machine and carrying a motor, feeding mechanism for feeding the machine bodily laterally over the mine bottom during the cutting operation including relatively r0- tatable feed operating and controlling members each adapted to cooperate with flexible feeding means and rotatable on axes disposed at the same end of the machine in upright planes parallel to the axis of said motor and on opposite sides of said axis, and means to drive said members at variable speeds including frictional means common to both of said members for controlling rotation thereof.

30. In a mining machine, a longitudinally disposed motor, and feeding mec anism including relatively rotatable feed operating and controlling members rotatable on laterally spaced horizontal axes extending longitudinally of the machine and on the rear end of the machine and each adapted to cooperate with llexible feeding means.

3l. In a mining machine, a plurality of relatively rotatable feed controlling elements each adapted to cooperate with flexible feeding means and rotatable on parallel axes extending longitudinally of the machine and in substantially the same transverse zone at the same end of the machine, power means for selectively driving either of said elements, and means for frictionally controlling either of said elements when the other is being power driven.

32. In a mining machine, a motor, and feeding means driven by said motor including plural predetermined speed transmission means frictionally controlled at each of its predetermined speeds, and a plurality of relatively rotatable feed operatin and controlling members ydriven thereby isposed at the same end of the machine and rotatable on parallel axes extending longitudinally of the machine, said members each being adapted to cooperate With flexible feeding means.

33. In a mining machine, a, frame s lidable on` its bottom on the mine bottom dunng operation ofthe machine and carrying a motor, and feeding means for feeding the machine bodily laterally over the mine bottom durin the cutting operation including plural spee epicyclic gearing driven thereby disposed with its axis of orbital movement in a horizontal plane, a plurality of relatively rotatable feed operating and controlling members each adapted to cooperate with flexible feeding means and rotating on parallel axes lying in vertical planes extending longitudinally of the machine, and means for connecting said members to said gearing.

3ft. In a mining machine, a frame slidable on its bottom on the mine bottom during operation 'of the machine and carrying a motor, and feeding means for feeding the machine bodily laterally over the mine bottom during the cutting operation including plural predetermined speed epicyclic gearing driven thereby disposed with its axis of orbital movement in a horizontal plane, and a feed operating.member adapted to cooperate With flexible feeding means and rotating on an axis lying in a plane parallel to a plane perpendicular to the axis of said orbital movement, and means for connecting said member to said gearing.

In a mining machine, a frame slidable on its bottom on the mine bottom during operation of the machine and carrying a motor, and feeding means for feeding the machine bodily laterally over the mine bottom during the cutting operation including plural predetermined speed epicyclic gearing driven thereby disposed with its axis of orbital movement in a horizontal plane and extending transversely of the machine, a feed 0perating member adapted to cooperate With flexible feeding means and rotating on an axis lying in a plane parallel to a plane perpendicular to the axis of said orbital movement, and means for connecting said member to said gearing.

36. In a mining machine, a motor, and feeding means driven by said motor including plural predetermined speed transmission means frictionally controlled at each of said predetermined speeds, and a plurality of relatively rotatable feed operating. and controlling members driven thereby` rotating on parallel axes extending longitudinally of the machine at the same end of the latter, said members each being adapted to cooperate with flexible feeding means.

37. In a mining machine, a horizontal motor having its axis extending longitudinally of the machine, and feeding means driven from the rear end vof said motor including plural predetermined speed transmission means frictionally controlled at each of its predeterminedspeeds, and a plurality of relatively rotatable feed operating and controlling members disposed at the rear end of the machine each rotating on a horizontal axis extending longitudinally of the machine and each adapted to cooperate with flexible feeding means.

38. In a mining machine, a horizontal motor having its axis extending longitudinally of the machine, and feeding means driven from the rear end of said motor including plural predetermined speed transmission means frictionally controlled at each of its predetermined speeds, and a plurality of relatively rotatable feed operating and controlling members rotating on parallel horizontal axes extending longitudinally of the machine and each adapted to cooperate with flexible feeding means.

39. In a mining machine, a horizontal motor having its axis extending longitudinally of the machine, and feeding mechanism driven from the rear end of said motor including a feed operating member and a relatively rotatable controlling member each adapted to cooperate with flexible feeding means and rotating on a horizontal axis extending longitudinally of the machine, said members being at the rear end of the latter.

40. In a mining machine, a motor, and feedin means driven by said motor including plgural predetermined speed epicyclic gearing frictionally controlled at each of its predetermined speeds, a pluralit of relatively rotatable feed operating an controlling members each adapted to cooperate with flexible feeding means and rotating on parallel horizontal axes extending longitudinally of the machine at the same end of the latter, and means for connecting said members to said gearing.

41. In a mining machine, a motor, and feeding means driven by said motor including a plural predetermined speed epicyclie' gear mechanism frictionally controlled at each of its predetermined speeds and disposed with its axis of orbital movement in a transverse horizontal plane, a plurality of relatively rotatable feed operating and controlling members each adapted to cooperate with flexible feeding means and rotating on parallel horizontal axes extending longitudinally of the machine, and means for connecting said members to said gear mechanism.

42. In a mining machine, a frame slidable on its bottom on the mine bottom during operation of the machine and carrying a motor, cutting mechanism driven thereby including a. cutter bar projecting from one end of the machine, and feeding means driven by said motor for feeding the machine bodily laterally over the mine bottom during the cutting operation including a plural predetermined speed epicyclic gear mechanism frictionally controlled at each of its predetermined speeds and disposed -With its axis of orbital movement in a horizontal plane and extending transversely of the machine, a feed operating member adapted to cooperate with flexible feeding means rotating on an axis lying in a plane parallel to a plane perpendicular to the axis of said orbital movement and dis osed at the end of the machine opposite rom said cutter bar, and means for connecting said member to said gear mechamsm,

43. In a mining machine, a motor, feeding mechanism including a feed operating member and a relatively rotatable take-up member each adapted to cooperate with flexible feeding means and rotatable on horizontal axes disposed at the same end of the machine, said axes lying in upright planes parallel to the longitudinal axis of said machine and on opposite sides of said axis, and a vertically disposed driving Worm therefor.

44. In a mining machine, a frame slidable on its bottom on the mine bottom during operation of the machine and carrying a motor, cutting mechanism driven by said motor including a forwardly projecting cutter bar, and flexible feeding means for feeding the machine bodily laterally over the mine bottom during the cutting operation including advance and receding flexible feeding portions extending laterally in opposite directions from opposite ends of said frame, relatively rotatable feed operating members disposed at the same end of the machine on parallel axes lying in parallel vertical planes extending longitudinally ofthe machine and adapted to cooperate with said feeding portions respectively, and a plural speed driving mechanism between said motor and said members and having a plurality of speeds frictionally controlled at each speed.

45. In a mining machine, a motor, and feeding means driven thereby comprising frictionally controlled planetary gearing, and a feed operating member driven thereby adapted to cooperate directly With flexible feeding means and rotatable on a` horizonaxis extending longitudinally of the Inac nne.

46. In a mining machine, a motor, plural speed epicyclic gearing driven thereby, a plurality of independently operable 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. A

47. In a mining machine, a motor, plural speed epicyclic gearing driven thereby, a plurality of independently operable 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 to 'said gearing.

48. In a mining machine, a motor, .and feeding means driven by said motor including plural predetermined speed transmission means frictionally controlled at each of its predetermined speeds and comprising a terminal element transmitting power at each speed, and a plurality 0f independently operable drums rotatable on parallel horizontal axes extending longitudinally of the machine.

49. In a mining machine, a motor, and feeding means driven by said motor including plural predetermined speed transmission means frictionally controlled at each of its predetermined speeds and comprising a terminal element transmitting power fat each speed, and a plurality of independently operable drums driven bysaid terminal element rotatable on parallel axes in a common zone transverse to the drum axes and of the width of a single drum. I

50. 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, a driving terminal element selectively driven through said clutches,vand drums driven by said element rotatable on parallel axes extending longitudinally of the machine.

5l. In a mining machine, a motor, and feeding means driven thereby comprising variable speed transmission mechanism including coaxial driving elements respectively effecting different speeds when operative, clutch means for rendering said driving ele- 'ments selectively operative as the effective driving element, said clutch means disposed between saidV driving elements, and a plurality of feed drums rotatable'on spaced axes extending longitudinally of the machine.

52. In a mining machine, a motor, plural speed epicyclic gearing driven thereby and having incorporated therewith means where-I by 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. 53. `In a mining machine', a motor, plural speed epicyclic 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 adapted to cooperate with exible feeding means and rotating on parallel horizontal axes extending longitudinally of said machine, and means for connecting said members to said gearing.

54. In a mining machine, a motor, and feeding means including plural speed epicyclic gearing driven thereby and having incorporated therewith means whereby the same is frictionally controlled at each speed, a plurality of relatively rotatable feed operating and controlling members adapted to cooperate with flexible feeding means and rotating on axes each lying in a vertical plane extending longitudinally of the machine, and means for connecting said members to said gearing.

55. In a mining machine, a motor, a plu- "rality of feed operating members adapted to cooperate with flexible feeding means and rotatable on parallel axes extending longitudinally of the machine, and transmission inea-ns between each of said members and said motor including planetary gearing.

56. In a mining machine, a motor, feed operating members adapted to cooperate with flexible feeding means and rotatable on parallel axes extending longitudinally of the machine, cutting mechanism, 'transmission means between said motor and said feed operating members, and means for driving said cutting mechanism from said transmission means.

57. In a mining machine, a motor, feed operating members adapted to cooperate with iexible feeding means and rotatable i on parallel axes extending longitudinally of vthe machine, cutting mechanism, transmis.-

ClfRTlFlCATE OF CGRRECTION.

Patent No. 1,704,667. 'Granted March Fi, i029. to

CHARLES F. USGOD.

It is bercby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 3, line 43, claim 7, after the word "motor" insert a comma; and that the said Letters Patent should be read with this correction therein that the same may conform to the recond of the case in the Patent Office.

' 'Signed and sealed this 16th day of April. A. D. 1929.

t M. J. Moofe, (Seal) Acting Commissioner of Patents.

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