US1609624A

US1609624A - Mining machine

Info

Publication number: US1609624A
Authority: US
Publication date: 1926-12-07
Anticipated expiration: 1943-12-07

Description

Decc 7 1926.

. 1,609524 M. P. HOLMES MINING MACHINE Original Filed June 17, 1

3 Sheets-Sheet 1 1,609,624 M. P. HOLMES A MINING MACHINE Original Filed June 1921 3 Sheets-Sheet 2 Patented Dec. 7, 1926.

UNITE snares tan ares MORRIS P. HOLMES, OF CLAREMONT, NEI V HAMPSHIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

MINING MACHINE.

My invention relates to mining machines.

It has for its object to provide an improved mining machine. A further object of my invention is to provide a mining machine having improved feeding mechanism adapted to exert the desired variable speed feeding action and to be manufactured at materially reduced expense. A still further object of my invention is to provide a mining machine having an improved variable speed truck drive preferably driven and controlled by the feeding mechanism. These and other objects of my invention will, however, hereinafter more fully appear.

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

In these drawings,

Fig. 1 is a side elevation of a machine equipped with my improvement and mounted on its transport truck.

Fig. 2 is a side elevation on the opposite side of the machine when the latter is removed from the truck and in cutting position on the bottom.

Fig. 3 is a side elevation partially in section of the rear end of the machine shown in Fig. 2.

Fig. 4 is a sectional View on line 44 of Fig. 3.

Fig. 5 is a sectional view on line 5-5 of Fig. 3.

Fig. 6 is a sectional view on line 66 of Fig. 3.

Fig. 7 is a detail sectional view on line 77 of Fig. 6.

In this illustrative construction I have shown a machine of the general reversible type described and claimed in my co-pending application Ser. No. 232,803, filed May 6. 1918 and comprising a machine frame 1 carrying a usual cutter bar 2, having a cutter chain 3 thereon driven by mechanism hereinafterdescribed, and a feed operating member 4 disposed ona transverse axis and cooperating with a flexible feeding member 5 disposable relative to idlers 6, 7, 8, and 9 on the machine to propel the machine on the mine bottom; a truck driving member 10, also on a transverse axis, being provided on the opposite side of the machine and connected through a sprocket and chain connection 11 to the wheels 12 of a truck 13 to propel the machine about the 'mine when the same is mounted upon the truck; and the feed operating and truck driving members 4 and being transposable at will with the necessary idlers in such a. manner as to enable the machine to be used as either a right or left hand cutter.

In my improved construction, the horizontal armature shaft 14 of the machine motor 15 carries on its rear end a bevel pinion 16 meshing with a larger bevel gear 17 keyed as at 18 to an upright shaft 19 supported on the frame in suitable roller bearings 20 and an upper adjustable bearing 21 removable through the top of the frame. This-shaft 19 has fixed to its lower end a helical gear 22 which in turn meshes with a larger helical gear 23 fixed as by one or more screws 24 to a cutter chain sprocket journal 25 which is in turn keyed as at 26 to another rearwardly located upright shaft 27 suitably journaled at is upper end in the frame as hereinafter described and having a collar 28 upon its lower end. This collar, as shown, rests upon a bearing ring 29 which is in turn supported on a bearing sleeve 30 rotatable on suitable roller bearings 31 housed in a removable shoe plate 32 having its outer surface lying flush with the shoe 33 of the machine and attached to the frame of the machine by suitable screws 34. As shown a ring-like member 35 is attached as by screws 36 to the member 25 and a cooperating sleeve 37 is provided between the member 25 and a cutter chain sprocket 38 which is rotatable thereon and adapted to be connected to the gear 23 by any usual form of cutter chain clutch fingers 39 movable through apertures 40 in the gear 23 and into engagement with suitable teeth 41 formed on the upper end of the sprocket sleeve. As this last is a well known construction common in mining machines, the same is not illustrated in detail herein, it being sufficient to say that a plurality of the members 39 is provided on a clutch spider 42 adjustable on the shaft 27 toward and from clutching position by a shipper yoke 43 pivoted at 44 on a transverse pivot on the frame and operable through an cecentric, detent controlled, operating lever 45 on the side of the machine.

Operatively connected to the cutter chain driving mechanism is improved feeding mechanism. As shown a worm 46 is keyed as at 47 to the shaft 27 at a point above the clutch yoke 43 and meshes with a worm gear 48 rotatably mounted on a transverse driving shaft 49 suitably journaled as hereinafter described on the frame and carrying atits opposite ends the feed operating member 4 and truck driving member 10. As shown the upper end of the shaft is suitably journaled in roller bearings 50 carried on an upper removable frame member, and the upper end of this shaft has adjustably fixed thereto, as by a screw 52 and a he 53, a pinion 54 meshing with a larger gear, ierein a sectional gear" 55, similarly attached as by a screw and a key 57 to the upper end of another upright but shorter shaft 58 j ournaled in bearings 59 a d 60 on the frame and carrying between its ends va worm 61 of considerably less pitch than the worm 46. This worm 61 in turn meshes with a worm gear 62 rotatably mounted on the shaft 49, both the worm gears 48 and 62 being car ried on

clutch sleeves

63 and 64, respectively, having teeth 65 and 66 adapted to be engaged by corresponding teeth 67 and 68 on movable clutch sleeves 69 and 70 movable longitudinally of the shaft'to connect the members 63 and .64 to or disconnect the same from correspondin

ly toothed sleeves

63 and 64 fixed to a sleeve 71 surrounding the shaft 49 and connectable thereto at willthrough friction clutch mechanism adjacent the feed operating member 4. As shown the sleeve 71 is provided with a flange 72 suitably connected as b screws 73 to the rotatable member 74 on t le friction clutch 75 surrounding the shaft, the other member 7 6 of the clutch being keyed to the shaft as at- 77 and the p'ress'ure'exerted on the clutch bein controlled by' an annular movable cylinder 78 movable relative toa corresponding stationary annularpiston 79 to which suitable fluid or'liqiud pressure is supplied through a conduit 80 from a hand operated pump 81. As shown, the feed operating member 4 is keyed as at'82 to the adjacent end of the shaft 49 and held in positibn'thereon by a screw and washer 83, the feed operating member also being provided with a sleeve 84 suitably ro tatably mounted in ball bearings 85 disposed between the sleeve and a stationary piston carrying member 86 suitably fixed to the frame andhaving the conduit 80 therein.

Attentipn'is also directed to the fact that thegear 23 also meshes with a helical pinion 87 on the lower end of a second short upright shaft 88 suitably journaled above the pinion on the frame in suitable roller bearings 89 and its upper end in suitable ball bearings 90 surrounding a positioning sleeve 91 keyed to the shaft at 92 and adjusted thereon by an adjustingscrew 93, theba'llbearings being held position by a suitable clamping member94 and being seated in a removable flanged sleeve 95 sothat the bearings and shaft may be removed bodily through the top of the frame. Keyed upon this shaft 88 is a third worm 96 of the same pitch as the worm 46, and this worm, as shown, meshes with a Worm gear 97 which is in turn carried on a clutch sleeve 98, similar to the

sleeves

63 and 64 and similarly rotatable on the sleeve 71, and provided with teeth 99 conn-ectable by the clutch member 69, the clutch member 69 thus serving to connect either the worm 97 or the Worm 48 to'the sleeve 71, while the clutch member 70 serves to connectthe worm 62 to that sleeve.

Operatively connected to the clutch menr bers 69 and 70 as by fork members 100 are control sleeves 1.01 and 102 carried on a reciprccable rod 103 supported on the opposite sides of the frame and movable about its axis and transversely relative to the frame slot without exercisingany control over the clutch member to cause it to connect the members 67 and 63, while in any position a movement of the rod in a reverse longitudinal direction *ill cause the member 69 to connect the members 67 and 99. The sleeve 102 is similar to the sleeve 101 but provided with a T-shaped slot 107' so that the rod may be movedv longitudinally in opposite directions relative to the sleeve and only operate the clutch-member 70 when it is in the short base of the T slot. In order that the sleeves may be held in any desired position of adjustment, the surface of each of the same is notched in two places as at 109 to receive a ball 110 held in place by a spring 111 acting between the ball and a threaded holding sleeve 112 carried by the frame, and a supplemental notch 113 being provided on the sleeve 101.

In the operation of my improved construction it will be evident that the connection of all the worms'48, 62 and 97 will be controlled by the friction clutch 75 and that any one of the worm wheels may be connected to the sleeve 71 by suitable manipulation of the clutch members 69 and. 70 to produce feeds of varying speed and in reverse directions, for example, a slow or cut ting speed may be obtained through the use of the worm61 whereas by use of the worm 46 a reverse fast speed maybe obtained, while by use of theworni 96 a still faster truck driving speed may be obtained. Attention is also directed to the fact that through the friction 75 not only may the lit) parts be connected but the speed may be varied as desired, and to the further fact that through the control member 104, the different speeds may be very easily obtained, the member 10 i being held in each position against accidental operation by the balls 110 and through its controlling sleeves rendered incapable of connecting two feeds simultaneously.

Here attention is also directed to the fact that the truck driving sprocket 10 is herein removably mounted on the shaft 49, the same being adapted to be connected to or disconnected therefrom through a threaded member 114 and a sleeve 115 receiving the sprocket, the two members 10 and 115 having clutch mechanism. 116 between the same so that when the member 114 is released the member 10 may be withdrawn from engagemay accordingly be removed and transposed with the feed operating miember 4 whenever desired. The feature of the clutch connection for the sprocket 10 and the transposable sprocket and feed operating member does not, however, enter into the present invention, the same being described and claimed in my co-pending application mentioned above, and it is accordingly unnecessary for them to be described more in detail'than to say that since the member 10 is thus connected to the shaft it may be driven at varying speeds through the feeding mechanism as described whenever desired or disconnected entirely from the shaft. 7

i As a result of my improved construction it will be noted that the feed and truck driving mechanism is coinpactly disposed at the rear of the machine and that the construction is such that the desired variations in speed of feed or truck drive may be obtained through an exceedingly simple mechanism of rugged type which may be mannfactured at small expense and which is at the same time exceedingly accessible, the member 86 or its counterpart on the opposite side of the frame being removable when desired to permit the mechanism associated with the shaft 49 to be withdrawn laterally Whenever desired, while the removable cover on the frame permits of the desired access to the worms and the cutter chain driving gearing.

IVhile I have in this application specifically described one form which my invention may assume in practice. it will be understood that this form has been shown for purposes of illustration and that the invention may be otherwise en'ibodied and practiced without departing from its spirit or the scope of the appended claims.

lVhat I claim as new and desire to secure by Letters Patent is 1. In a mining machine, a feed operating shaft. a plurality of driving worms rotating on axes perpendicular to a plane in which the axis of said shaft lies, a pluialitjv' of Worm gears on said shaft. a sleeve between said \vorn'i gears and shaft and connectible to said shaft, means for alternatively connecting and diaconnecting said sleeve and shaft, and means for selectively connecting said gears to said sleeve.

2. In a mining machine, a feed operating shaft. a plurality of worms of different pitch rotating on axes perpendicular thereto, a plurality of cooperating worm gears on said shaft, a sleeve between said worm gears and shaft, a clutch controlling the connection of said sleeve to said shaft, and means for selectively connecting said worm gears to said sleeve.

3. In a mining machine, a feed operating shaft, a plurality of driving members therefor concentric therewith, a sleeve on said shaft, friction clutch means for connecting said sleeve to said shaft and disconnecting it therefrom, and means for selectively connecting said driving members to said sleeve.

In a mining machine, a feed operating shaft. a plurality of driving members concentric therewith and spaced apart thereon, a sleeve on said shaft, friction clutch means for connecting said sleeve to said shaft, or disconnecting it therefrom. means for selectively connecting saic driving members to said sleeve, and a feed operating member driven by said shaft and coaxial therewith.

5. In a mining machine, a feed operating shaft, a plurality of drive members concentric therewith and spaced apart thereon, a sleeve on said shaft, friction clutch means for connecting said sleeve to said shaft or disconnecting it therefrom. means for se lectively connecting said driving members to said sleeve, and a truck driving member driven by said shaft.

6. In a mining machine. a feed operating shaft, a plurality of driving members concentric therewith and spaced apart thereon, a sleeve on said shaft, friction clutch means for connecting said sleeve to said shaft or disconnecting it therefrom, means for selectively connecting said driving members to said sleeve, and feed operating and truck driving members driven by said shaft.

7. In a mining machine. a feed operating shaft. a plurality of driving members eoncentric therewith and spaced apart there on, a sleeve on said shaft, friction clutch means for connecting said sleeve to said shaft or disconnecting it therefrom, means forselectively connecting said driving members to said sleeve, and feed operating and rack driving memherscarried on the opposite ends of said shaft.

8. In a mining machine, a feed operating shaft, a plurality of driving elements therefor spaced apart thereon, a plurality of means for connecting said driving elements thereto, a friction clutch controlling the connection of each of said means to said shaft, and a single means for selectively operating said plurality of connecting means.

9. In a mining machine, a feed operating shaft, a plurality of driving elements therefor spaced apart thereon, a plurality of means for connecting said driving elements thereto, a friction clutch controlling the connection of each of said means to said shaft, and a single means for selectively operating said plurality of connecting means including a controlling member disposed parallel to said shaft.

10. In a n'iining machine, a cutt r chain sprocket rotating element, a worm shaft coaxial therewith and rotatable therewith, a plurality of parallel worm shafts, and driving connections between one end of one of the same and said worm shaft and between the opposite end of the other of the same and said cutter chain sprocket rotating element, a feed operating member, and driving connections between said worms and said member.

11. In a mining machine, a cutter chain sprocket rotating element, a worm shaft coa Xial therewith and rotatable therewith, a plurality of parallel worm shafts, and driving connections between one end of one of the same and said worm shaft and between the opposite end of the other of the same and said cutter chain sprocket rotating element, a feed operating member, and driving connections between said worms and said member including a plurality of selectively operable clutches.

12. A mining machine slidable on a mine bottom con'iprising flexible lateral feeding mechanism including a transverse feed operating shaft, a feed operating member adapted to cooperate directly with a flexible feeding member and driven by said shaft and rotatable on an axis parallel to a line parallel to said shaft, a plurality of worm on said feed operating shaft and se lectively connectible'therewith, a plurality of worms meshing therewith, and means for rotating said worms in different directions.

13. A mining machine slidable on a mine bottom comprising flexible lateral feeding mechanism including a transverse feed operating shaft, a feed operating member adapted to cooperate directly with a flexible feeding member and mounted on and driven by said shaft, a plurality of worm gears on said feed operating shaft and selectively connectible therewith, a plurality of worms meshing therewith, and means for rotating said worms at different speeds and in different directions.

14:. In amining machine of the character which performs its normal cutting operations While sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is d smounted during' the normal cutting operations aforesaid, a machine frame slidablc on the mine bottom during cutting, a transverse feed operating shaft, a feed operating member driven thereby, a plurality ofworm gears on said feed operating shaft and selectively connectible therewith, and means including a plurality of worms for rotating certain of said worm gears in the same di rection at differentpredetermined speeds and one of said gears in an opposite direction at a slower predetermined speed than one of said first mentioned Speeds.

15. A m ning machine slidable on a mine bottom comprising flexible lateral feeding mechanism including a laterally extending feed operating member, motor driven cutting mechanism, and. a plurality of worm trains driven by said cutting mechanism for selectively driving said feed operating member.

16. A mining machine slidable on a mine bottom comprising flexible lateral feeding mechanism including a laterally extending feed operating member, motor driven cutting mechanism including a cutter chain sprocket, and a plurality of worm trainsfor selectively rotating said feed operating member including a worm rotatable with said sprocket and a second worm rotatable by said first mentioned worin 17, A mining machine slidable on a mine bottom during normal cutting operations and comprising flexible lateral feeding mechanism including a laterally extending feed operating member, motor driven cutting mechanism including helical gearing and a cutter chain sprocket driven thereby, and a plurality of worm trains rotatable with said sprocket for selectively rotating said feed operating member.

18. A. mining machine slidable on a mine bottom during normal cutting operations and comprising flexible feeding mechanism including a laterally extending feed operating member, truck Cll'lr ng mechanism including a laterally extending truck driving member, a plurality of worm gear trains for selectively driving said feed operating member, and a cooperating train for driving said truck driving member.

19. A mining machine slidable on a mine bottom during normal cutting operations and comprising flexible feeding mechanism including a laterally extending feed operatmg member, truck driving mechanism including a laterally extending truck driving member, a plurality of Worm gear trains for selectively driving said feed operating member, and a cooperating worm gear train for driving said truck driving member, said worm gear trains each including an upright worm.

20. A mining machine slidable on a mine bottom during normal cutting operations and comprising flexible feeding mechanism including a laterally extending feed operating member, truck driving mechanism including a laterally extending truck driving member, a plurality of worm gear trains for selectively driving said feed operating member, and a cooperating worm gear train for driving said truck driving member, said worm gear trains each including an upright constantly rotatable worm.

21. A mining machine comprising a mach ne frame slidable on the mine bottom during cutting and flexible feeding mechanism including a laterally extending feed op-- crating member and flexible feeding means cooperating directly therewith to effect lateral feeding, cutting mechanism including a horizontally disposed cutter chain driving sprocket, and means for driving said feed operating member at difierent speeds including an upright worm rotatable with said sprocket and a second worm geared to said first mentioned worm and of different pitch therefrom.

22. In a mining machine, a machine frame slidable upon the mine'bottom during normal cuttin operations and feed operating mechanism therefor including a feed operating member, driving mechanism for selectively driving said member including a plurality of rotating members and a common member to which said rotating members are severally connectible, and means for selectively connecting said rotating members directly to said common member including clutches on opposite sides of one of said roating members.

23. In a mining machine, feed operating mechanism including a feed operating memher, driving mechanism for selectively driving said member including a plurality of rotating members anda common shaft, and means for-selectively connecting said rotating members to said shaft including clutches on opposite sides of one of said rotating members and a friction clutch between each of said rotating members and said shaft.

2%. In a mining machine, feed operating and truck driving mechanism including a feed operating member and a truck driving member, driving mechanism for selectively driving said members including a plurality of rotating members and a common shaft,

and means for selectively connecting said rotating members to said shaft including clutches on opposite sides of one of said rotating members, a friction clutch between each of said rotating members and said shaft, and a clutch between said truck driving member and said shaft.

25. in a mining machine, feed operating mechanism including a feed operating member, driving mechanism for selectively driving said member including a plurality of rotating members and a common shaft, and means for selectively connecting said rotating members to said shaft including clutches on opposite sides of one of said rotating members, a plurality of clutch shipping members, and asingle control member having connections for operating either of said shipping members while the other remains stationary.

26. In a mining machine, feed operating and truck driving mechanism including a feed operating member and a truck driving member, driving mechanism for selectively driving said members including a plurality of rotating members and a common shaft, and means for selectively connecting said rotating members to said shaft including clutches on opposite sides of one of said rotating members and a plurality of clutch shipping members having a common control member and selectively movable thereby.

27. Mining machine mechanism including a plurality of rotating members, a shaft on which said members are carried, clutches for said members on opposite sides of one of said members operative to connect the latter to said shaft, and means for selectively operating either of said clutches while the other remains stationary having a single operating handle.

28. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a driving connection between said vertical shaft and said cutter chain driving sprocket, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including hori zontally journaled feed operating means adapted to cooperate directly with flexible feeding means, and actuating means for said feed operating means including a plurality of worms rotatable upon vertical axes.

29. A-room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end tlereof meshing with said driving pinion, a driving connection between said vertical shaft and said cutter chain driving sprocket, and means driven by said motor for feeding and guidin said machine bodily towards and laterally along a mine face during cutting including a feed operating member rotating upon a transversely extending axis, and actuating means therefor including a plurality of worms rotatable upon vertical axes, and means for rendering said worms alternatively operative as driving members.

30. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a driving connection between said vertical shaft and said cutter chain driving sprocket, flexible machine guiding and feed ing means providing a plurality of flexible feeding portions extending oppositely from opposite ends of said machine frame during transverse cutting, horizontally journaled feed operating means cooperating with said flexible feeding means, and actuating means for said feed operating means including a transversely extending driving shaft for the latter and actuating means for said shaft including a plurality of worms rotatable upon vertical axes,

A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armatureshaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a' driving connection between said vertical shaft and said cutter chain driving sprocket, flexible machine feeding and guid ing means providing a plurality of flexible feeding portions extending oppositely from opposite ends of said machine frame during transverse cutting, horizontally journaled feed operating means cooperating with said flexible feeding means, andactuating means for said feed operatiiig means including a transversely extending driving shaft for the latter and actuating means for said shaft including a plurality of worms one of which is rotatable upon a vertical axis and which are selectively operative as driving members.

3;. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion upon the rear end. of said shaft, a driving gear meshing with said driving pinion and driven thereby. a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatableupon a vertical axis and meshing with said second mentioned driving inion, a cut ter chain driving sprocket, a driving con-, nection between said vertical shaft and said driving sprocket, and means driven by said motor for feeding said machine bodily laterally along a mine face and guidingthe same during cutting including horizontally journaled feed operating means, flexible" feeding means adapted to cooperate directly with said feed operating means and including portions adapted to be extended in opposite directions from the opposite ends of said machine frame during feeding across the face, and driving means for said feed operating means including a plurality of worms rotatable upon vertical axes.

33. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion upon the rear end of said shaft, a driving gear meshing with said driving pinion and driven thereby, a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and meshing with said second mentioned driving pinion, a cutter chain driving sprocket coaxial with said last mentioned gear, a driving connection between said vertical shaft and said driving sprocket, and means driven by said motor for feeding said machine bodily laterally along a mine face and guiding the same during cutting including horizontally journaled' fecd operating means, flexible feeding means adapted to cooperate directly with said feed operating means and including portions adapted to be extended in opposite directions from the opposite ends of said ma chine frame during feeding across the face, and driving means for said feed operating meansincluding a plurality'of worms rotatable upon vertical axes.

34. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machinea driving pinion upon the rear end of said shaft, a driving gear meshing with said driving pinion and driven tl'iereby, a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and meshing with said second mentioned driving pinion, a cutfor chain driving sprocket, a driving connection between said second mentioned driving gear and said driving sprocket, and means' ill! including portions adapted to be extended in opposite directions from the opposite ends of said machine frame during feeding across the face, and driving means for said feed operating means including a plurality of worms rotatable upon vertical axes. one of which is in alinementwith the a-xis of rotation of said cutter chain driving sprocket.

35. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion upon the rear end of said shaft, a driving gear meshing with said driving pinion and driven thereby, a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and meshing with saidsecond mentioned driving pinion, a cutter chain driving sprocket coaxial with said last mentioned gear, a driving connection between said last mentioned gear and said driving sprocket, and means driven by said motor for feeding said machine bodily lateral 1y along a mine face during cutting including feed operating means, flexible feeding means adapted to cooperate directly with said feed operating means .and including portions adapted to be extended in opposite directions from the opposite ends of said machine frame during feeding across the face, and driving means for said feed operating means including a plurality of worms rotatable upon vertical axes one of which is in alinement with the axis of rotation of said cutter chain dri ing sprocket.

86. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft ar ranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end thereof meshing with/said driving pinion, a cutter chain'driving sprocket a driving connection between said vertical shaft and said cutter chain driving sprocket, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horizontally journalled feed operating means adapted to cooperate directly with flexible feeding means, actuating means for said operating means includin a plurality of worms rotatable upon vertical axes, and friction clutch means between said worms and said feed operating'means.

37. A room and pillar mining machine including-a motor having its armature shaft rotatable on an axis extending longitudinah ly of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a cutter chain driving sprocket, a driving connection between said vertical. shaft and said cutter chain driving sprocket, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including a feed. operating member rotating upon a transversely extending axis, and actuating means therefor including a plurality of worms rotatable upon vertical axes, and means for rendering said worms alternatively operative as driving members including friction clutch means between said worms and said feed operating means.

38. A room and pillar mining machine including a motor having its armature'shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, a vertical shaft arranged to the rear of said armature shaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a cutter chain driving sprocket, a driving connection between said vertical shaft and said cutter chain driving sprocket, flexible machine guiding and feeding means providing a plurality of flexible feeding por-,

tions extending oppositely from opposite ends of said machine frame during transverse cutting, horizontally journaled feed operating means cooperating with said flexible feeding means, and actuating means for said feed operating means including a transversely extending driving shaft for the latter and actuating means for said shaft including a plurality of worms rotatable upon vertical axes. and friction clutch means be tween said worms and said feed operating means.

89. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a bevel driving pinion upon the rear end of said shaft, :1 vertical shaft arranged to the rear of said arn'iaturc shaft and carrying a bevel gear adjacent the upper end thereof meshing with said driving pinion, a cutter chain driving sprocket, a driving connection between said vertical shaft and said cutter chain driving sprocket, lexible machine feeding and guiding means providing a plurality of flexible feeding portions extending oppositely from opposite ends of said machine frame during transverse cutting, horizontally journaled feed operating means cooperating with said flexible feeding means, and actuating means for said feed operating means including a transversely extending driving shaft for the latter and actuating means for said shaft including a plurality of worms one of which is rotatable upon a vertical axis and which are selectively operative as driving members and also including friction clutch means between said worms and said feed operating means.

40. A room and pillar mining machine including a motor having its arn'iature shaft rotatable on an axis extending longitudinall of the machine, a driving pinion upon the rear end of said shaft, a driving gear meshing with said driving pinion and driven thereby, a shaftu'pon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and meslr ing with said second mentioned driving pinion, a cutter chain driving sprocket, a driving connection between said last mentioned' driving gear and said driving sprocket, and means driven by said motor for feeding said machine bodily laterally along amine face and guiding the same during cutting including horizontally journa'led feed operating means, flexible feeding means adapted to cooperate directly with said feed operating means and including portions adapted to be extended in opposite directions from the opposite ends of said machine frame during feeding across the face, driving means for said feed operating means including a plurality of worms rotatable upon vertical axes, and controlling means including friction clutch means be tween said worms and said feed operating means.

41; A room and pillar mining machine in cluding a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion upon the rear end of said shaft, a driving gear meshing with said driving pinion and driven thereby, a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and me hing with said second mentioned driving pinion, a cut ter chain driving sprocket coaxial with said last mentioned gear, a driving connection between said last mentioned gear and said driving sprocket, and means driven said motor for feeding said machine bodily latorally along a mine face and guiding the same during cutting including horizontally journalcd feed operating means, flexible feeding means adapted to cooperate directly with said feed operating means and including portions adapted to be extended in op posite directions from the opposite ends of said machine frame during feeding across the face, driving means for said feed operating means including a plurality of worms rotatable upon vertical axes, and controlling means including friction clutch means between said worms and said feed operating means.

42. A room and pillar mining machine including a motor having its armature shaft rqoaeza rotatable on an axis extending longitudinally of the machine, driving inion upon the rear end of'said shaft, a driving gear meshing with said driving pinion and driven thereby, a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and meshing with said second mentioned driving pinion, a cutter chain driving sprocket, a driving con nection between'said second mentioned driving gear and said driving sprocket, and means driven by said motor for feeding said machine bodily laterally along a mine face during cutting including feed operating means, flexible feeding means adapted to co operate directly with said feed operating mean and including portions adapted to be extended in opposite directions from the opposite ends of said machine frame during feeding across the face, and driving'means .for said feed operating means includinga piu'ality of worms rotatable upon vertical axes one of which is in alinement with the axis of rotation of said cutter chain driving sprocket, said driving means including friction clutchmeans between said feed operating means and said worms.

43. A room and pillar mining machine in cluding a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a driving pinion upon the rear end of said shaft, a. driving gear meshing with said driving pinion and driven thereby, a shaft upon which said driving gear is mounted, a driving pinion upon said last mentioned shaft, a driving gear rotatable upon a vertical axis and meshing with said second mentioned driving pinion, a cutter chain driving sprocket co" axial with said last mentioned gear, a driving connection between said last mentioneddriving gear and said driving sprocket, and means driven by said motor for feeding said machine bodily laterally along a mine face during cutting including feed operating means, flexible feeding means adapted to cooperate directly with said feed operating means and including portions adapted to be extended in opposite directions from the opposite ends of said machine frame during feeding across the face, and driving means for said feed operating means including a plurality of worms rotatable upon vertical axes one of which is in alinement with the axis of rotation of said cutter chain driving sprocket, said driving means including friction clutch means between said feed operating means and said worms.

44. A room and pillar mining machine including a motor having its armature shaftrotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving means therefor including a gear rotatable coaxially therewith, driving connections between said gear and said armature shaft,

and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horizontally journaled feed operating means, and actuating means there for including a plurality of worms rotatable on vertical axes which extended pass with in the circumference of a circle coinciding with the periphery of said gear.

45. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving means therefor including a gear I'Olifitr able coaxially therewith, driving connections between said gear and said armature shaft, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horizontally journaled feed operating means, and actuating means there for including a plurality of worms rotatable on vertical axes which extended pass within the circumference of a circle coinciding with the periphery of said gear, said worms be-v ing disposed above said gear.

46. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving means therefor including a gear rotatable coaxially therewith, driving connections between said gear and said armature shaft, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face dur- .-ing cutting including horizontally journaled feed operating means, and actuating means therefor including a plurality of worms, one of said worms being coaxial with said gear.

4-7. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving means therefor including a gear rotatable coaxially therewith,- driving connections between said gear and said armature shaft, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horizontally journaled feed operating means and actuating means therefor including a plurality of worms, one of said worms being coaxial with said gear and said worms being disposed above the plane of said gear.

48. A room andpillar mining machine including a motor having its armature shaftrotatable -on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving means therefor including a gear rotatable coaxially therewith, driving connections between said gear and said armature shaft, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horizontally journalled feed operating means, actuating means therefor including a plurality of worms rotatable on vertical axes which ex tended pass within the circumference of acircle constituting the periphery of said gear, and frictionclutch means between said worms and said feed operating means.

49. A room and pillar mining machine in cluding a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a Vertical axis, driving means therefor including a gear rotatable coaxially therewith, driving connections between said gear and said armature shaft, and means driven by. said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horizontally journaled feed operating means, and actuating means therefor including a pluralityof worms rotatable on vertical axes which extended pass within the circumference of a circle constitutin the periphery of said gear, said worms eing disposed above said gear, and friction clutch means between said worms and said feed operating means.

50. A room and pillar mining machine including a motor having its armature shaft rotatable on an axis extending longitudi nally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving means therefor including a gear rotatable coaxially therewith, driving connections between said gear and said armature shaft, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting including horzontally journaled feed operating means, and actuating means therefor including a plurality of worms, one of said worms being coaxial with said gear, and friction clutch means between said worms and said feed operating means.

51. A room and pillar mining machine in cluding a motor having its armature shaft rotatable on an axis extending longitudinally of the machine, a cutter chain driving sprocket rotatable upon a vertical axis, driving meanstherefor including a gear rotatable coaxially therewith, driving connections between said gear and said armature shaft, and means driven by said motor for feeding and guiding said machine bodily towards and laterally along a mine face during cutting in eluding horizontally journaled feed operating means and actuating means therefor ina gear thereon,\driving connections between said gear and said arn'iature shaft, a cutter chain driving sprocket coaxial with said gear, means for positively connecting said sprocket and gear; a laterally projecting truck driving member, driving connections between said gear and said truck driving member, and means also driven by said motor for feeding .and guiding the machine bodily toward and laterally along a mine face during cutting including horizontally 'journaled feed operating means and actuating means therefor including a plurality of worms rotatable on vertical axes.

A room and:,pillar mining machine in cluding a motorhaving'its armature shaft rotating onan axis extending longitudinally ofthe machine, a vertical shaft arranged to the rear of said armature shaft andccarrying a vgear thereon, driving connections between said gear and said armature shaft, a cutter chain driving sprocket coaxial with said gear, means for positively connecting said. sprocket and gear, a laterally projecting truck driving member, driving connections between said gear and said truck driving member, and means also driven by said 1110- tor for feeding and guiding the machine bodily toward and laterally along a mine face during cutting including horizontally journaled feed operating means and actuating means therefor includinga plurality of worms rotatable on ,vertical axes one of which is coaxial with said gear.

54. A room and pillar mining machine in cluding a motor having its armature shaft rotating on an axis extending longitudinally of the machine, a vertical shaft arranged to the rear of said armature shaft and carrying a gear thereon, driving connections between said gear and said armature shaft, a cutter chain drivin sprocket coaxial with said gear, means T01 positively connecting said sprocket and gear, a laterally projecting truck driving member, driving connections between said gear and said truck driving member, and means also driven by said 1110- tor for feeding and guiding the machine bodily toward ,and laterally along a mine face during cutting including horizontally journaled feedoperating means and actuating means therefor including a plurality of worms rotatable on vertical axes, and frictional clutchmeans between 'said worms and said feed operating-means. V

55. A room and pillar mining machine 1n-- cluding a motor having its armature shaft rotating on an axisextending longitudinally of the machine, a verticalsha'ft arranged to the rear of-said armature shaft and carrying a gear thereon, driving connections between said gear and said armature share, a cutter chain driving sprocket coaxial with said gear, means for =pivotally connecting said sprocket and gear, a laterally pro ectin g truck driving member, driving connections between said gear and said truck driving member, and means also driven by saidmotor for feeding and guiding :the machine bodily toward-and laterally along amine f-ace'during cutting including horizontally joumaled feed operatingmeans and actuating means therefor including 7 a plurality of worms =rotatable on vertical axes one of which is coaxial with said gear, and frictional clutch means betweensaid-worms andsaid feed operating means.

'56. In aroom and pillar mining-machine, a feed operatingme rnber adaptedto cooperate with a flexible feeding "member in effecting transverse feeding, and actuating means therefor including three driving trains arranged in parallel, and controlling means therefor permitting but one train to operate-at a given time. I

57, In a room and pillar rnining machine, a feed operating member adapted to cooper-- a" c with a flexible feeding member in effecting transverse feeding, and actuating means therefor including three drivin trains arranged in parallel, and contro ling means therefor permitting but one train to operate ata given time, one "of said trains driving said feed operating member at a cuttingspeed, another of said trains driving said feed operating member-at a machine moving spced, and said th ird train driving'said feed operating member at a speed different from each of said first mentioned speeds.

58. Ina inining machine of the character which performs its normal cutting operations while sliding "upon the nuns bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member-adapted to cooperate directly with flexible feeding means to effect cutting feednpon the mine bottom and movements of the maehine relative to-and upon a truck, a truck- 1lrivinganember rotatable on an axis parallel to-a line parallel ;to the axis of rotation of said feed operating member, and actuating means for said members including a plura-lity'of worm wheels coaxial with said feed operating member, means whereby each of members may be driven by either of said worm wheels, and means for effecting rotation of said worm wheels at diflerent. saeeds including worms engaging respectively therewith.

59. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to anotherupon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means to efiect cutting teed upon the mine bottom and movements ot'the machine relative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said feed operating member, means whereby each or" said members may be driven by-either of said worm wheels, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on parallel axes.v

In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said teed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said feed operating member, and means for eitecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes.

61. In a mining apparatus, in combina-i tion, a feed operating member adapted to cooperatedirectly with flexible feeding means, a. truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating meansfor said members including a plurality of worm wheels coaxial with said feed operating member, and means for eftecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes at the same side of the axis of rotation of said teed operating member.

62. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a'truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means toeflect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, means whereby each of said members may be driven by either of. said worm wheels, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith.

63. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck trom'which it is dismounted during the normal cutting operations aforesaid, in combination. a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting teed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, means whereby each of said members may be driven by either oi said worm wheels, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on parallel axes.

(it. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said teed operating member, and actuating means for said members includinga plurality of worm wheels coaxial with said truck' driving member, and means for effecting rotation of said worm wheels at diflerent'speeds including worms engaging respectively therewith and rotating on vertical In a niining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said teed operating member, and actuating means i'or said u'ieinbers including a plurality of worm wheels coaxial with said truck driving member, means whereby each of said members may be driven by either of said worm wheels, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes at the same side of the axis of rotation of said truck driving member.

66.111 a mining machine of the character which perfouns its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operatingmember adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and nioven'ients of the machine relative to and upon a truck, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith, means whereby each 0t said members may be driven by either of said worm wheels, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith.

(37. In a mining machine of the character which performs its norn'ial cutting operations while sliding upon the mine bottoi'u and is transported from one working place to another upon .a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a teed operating member adapted to cooperate (irectly with flexible feeding means to effect cutting fee-d upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith, means whereby each of said members may be driven by either of said worm wheels. and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on parallel axes,

68. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes.

69. In a n'iining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a. truck driving member coaxial there" with, and actuating means for said members including a plurality of worm wheels coaxial therewith, and means for eii ecting ro tation of said worm wheels at different speeds incli'iding worms engaging respectively therewith and rotating on vertical axes at the same side of the axes of rotation of said members.

bottom during cutting, a motor and cutting mechanism driven by the motor and including a cutter carrying cutter bar disposed longitudinally of said machine throughout the sumping and lateral cutting operations and wherein said bar is sumped into a working face and thereafter fed laterally along such a face with the cutting mechanism operating in the same direction as during the .unping operation, a feed operating member adapted to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driving member, said members rotating on axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members and means for driving said worm wheels at differentspeeds including worms meshing respectively therewith.

71. In a mining apparatus of the type which includes a frame slidable on a mine bottom during cutting, a motor and cutting mechanism driven by the motor and including a c tter carrying cutter bar disposed longitudinally of said machine throughout the sumping and lateral. cutting operations and wherein said bar is surfiped into a work-r ing face and thereafter fed laterally along such a face with the cutting mechanism op erating in the same direction as during the sumping operation, a feed operating'member adapted to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driving member, said members rotating on axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said in mbers, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating on parallel axes.

72. In a mining apparatus, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member, said members rotating on arms parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving member at a higher predetermined speed in cluding worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating on vertical axes.

73. In a mining apparatus of the type which includes a frame slidable on a mine bottom during cutting, a motor and cutting mechanism driven by the motor and including a cutter carrying cutter bar disposed longitudinally of said machine throughout the sumoing and lateral cutting operations and wherein said bar is sumped into a working face and thereafter fed laterally along such a face with the cutting mechanism operating in the same direction as during the sumping operation, a feed operating member adapted to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driving member, said members rotating 0n axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating in opposite directions on parallel axes. V

T l. In a mining apparatus, afeed operating member adapted to cooperate directly with flexible feeding means, a truck driving member, said members rotating on axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving I member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating in opposite directions on vertical axes.

75. In a mining apparatus of the type whicn includes a frame slidable on a mine bottom during cutting, a'motor and cutting m chanism driven by the motor and including a cutter carrying cuttter bar disposed longitudinally of said machine throughout the sumping and lateral cutting operations and wherein said bar is sumped into a working face and thereafter fed laterally along such a face with the cutting mechan'sm operating in the same direction as during the sumping operation, a feed operating member adapt-ed to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driv'ng member, said members rotating on axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds.

including worms meshing respectively therewith and rotating at different speeds in opposite directions.

76. In a mining apparatus, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member, said members rotating on axes 7 parallel to the same straight line, and means for-driving said feed operating member at a predetermined speed and said truck driving member at a'higher predetermined speed including worm wheels coaxial with each ofsaid members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating at different speeds in opposite directions on vertical axes.

77. In a mining apparatus of the type which includes a frame slidable on a mine bottom during cutting, a motor and cutting mechanism driven by the motor and including a cutter carrying cutter bar disposed longitudinally of said machine throughout the sumpin-g and lateral cutting operations and wherein said bar is sumped into a working face and thereafter fed laterally along such a face with the cutting mechanism operating in the same direction as during the sumping operation, a feed operating member adapted to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driving member, said members rotating on horizontal axes parallel to the same straight line, and means for driving said feed oper ating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith.

78. In a mining apparatus of the type which includes a frame slidable on a mine bottom during cutting, a motor and cutting mechanism driven by the motor and including a cutter carrying cutter bar disposed longitudinally of said machine throu hout the sumping and lateral cutting operations and wherein said bar is sump-ed into a worln ing face and thereafter fed laterally along such a face with the cutting mechanism op erating in the same direction as during the sumping operation, a feed operating member adapted to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driving member, said members rotating on horizontal axes parallel to the same straight line, and means for driving said feed operating member at a predetermined spced and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively there with and rotating on parallel axes.

79. In a mining apparatus, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member, said members rotating on horizon tal axes parallel to the same straight line,- and means for driving said feed operating the sumping and lateral cutting operations and wherein said bar is sumped into a w rking' face and thereafter fed laterally along such a face with the cutting mechanism op erating in the same direction as during the sumping operation, a feed operating member adapted to cooperate directly with flexible feeding means to effect such lateral feeding operation of the machine, a truck driving member, said members rotating on horizontal axes parallel to the same straight line, and means for driving said feed operating memberat a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing re spectively therewith and rotating in opposit-e directions on parallel axes.

81. In a mining apparatus, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member, said li'lGll'll'ilfS rotating on horizont'ai axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said trucir driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating in opposite directions on vertical axes.

82.. In a mining apparatus of the type which includes a frame slida'ble on a mine bottom during cutting, a motor and cutting mechanism driven by the motor and including a cutter carrying cutter bar disposed longitudinally of said machine throughout the sumping and lateral cutting operations and wherein said bar is sun'iped into a wor'lo ing face and thereafter fed laterally along such a face with the cutting mechanism operating in the same direction as during the suinping operation, a feed operating member adapted to cooperate directly with flexible feeding means to effect such lateral rung inembei'", said members rotating on horizontal axes parallel to thesame straight line, and means for driving said feed operoperation of the machine, a truck ating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels'co axial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating at different speeds in opposite directions on parallel 3X63.

83; In a mining apparatus, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member, said members rotating on horizontal axes parallel to the same straight line, and means for driving said feed operating member at a predetermined speed and said truck driving member at a higher predetermined speed including worm wheels coaxial with each of said members, and means for driving said worm wheels at different speeds including worms meshing respectively therewith and rotating at different speeds in o'pposite directions on vertical axes.

84. In a. mining machine of the character which performs its normal cutting operationswhile sliding uponthe mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting o erations aforesaid, in combination, a ee'd operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and' upon a truck, a truck driving member rotatable onan axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including 'a plurality of worm wheels coaxial with said feed operating member, means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith, means whereby each of said members may be driven by either of said worm wheels, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as drivingelements,

85. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from One working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination. a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of wormv wheels coaxial with said feed operating member,

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means for effecting rotation of said Worm wheels at different speeds including worms engaging respectively therewith and rotating on parallel axes, means whereby each of said members may be driven by either of said worm wheels, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving elements.

86. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said feed operating member, means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotatmg on vertical axes, and clutch means coaxialwith said-worm wheels selectively engageable to cause the latter to act selectively as driving elements.

87. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said'feed operating member, means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes at the same side of the axis of rotation of said feed operating member, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving elements.

88. In a miningmachine of the character which performs its normal cutting opera-- tions while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck drivingmember rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating memher, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, and means for effecting rotation of said worm wheels at different speees including worms engaging respectively therewith, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving elements.

89. In a mining machine ofthe character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machinerelative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a. plurality of worm wheels coaxial with said truck driving member, and means for effecting rotation of said worm wheels at different. speeds including worms engaging respectively therewith and rotating on parallel axes, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving elements.

90. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of ro tation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving elements.

91. In a mining apparatus, in combination, a feed operatin member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, and means for effecting rotation of said worm wheels at different speedsincluding worms engaging respectively therewith and rotating on vertical axes at the same side of the axis of rotation of said trucl: driving member, and clutch means coaxial with said worm wheel selectively engageable to cause the latter to act selectively as driving elements.

92. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member coaxial therewith, and actuating means for said members in eluding a plurality of worm Wheels coaxial therewith and means for etlecting rotation of said worm wheels at di'tlerent speeds including worms engaging respectively therewith; and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving elements.

93. Ina mining machine of the character which performsits normal cutting operations while sliding upon the minebottom and is'tran'sported from one working place to another upon a truck from which it is dismounted during the normal cut-ting operations aforesaid, in combination, a feed op erating member adapted to cooperate directly with flexible feeding means to etfec cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member co- 'axial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith and means for effecting rotation of said worm wheels at different speeds including \vorms engaging respectively therewith and rotating on parallel axes, and clutch means coaxial with said worm wheels selectively engageable to cause the latter to act selectively as driving ele ments.

94. In a mining apparatus, in combina" tion, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial tl'ierewith, and means for eftecting rotation of said worm wheelsat difterent speeds including worms engaging respectively therewith and rotating on vertical axes, and clutch means coaxial with said worm wheels selectively engageable tocause the latter to act selectively as driving elements.

95. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member coaxial therewith, and' actuating means -tor said membersineluding a plurality of worm wheels coaxialtherewith, and means for efl'ecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating on vertical axes at the same side of the axes of rotation of said members, and clutch means coaxial with said I worm wheels selectively engageable to cause the latter to act selectively as driving elements.

96. In a mining machine of the character which performs its normal cut-ting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating: member adaptedto cooperate dii-ect-ly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotat-able on an axis parallel to a line parallel to the axis of rotation of said feed operat ing member, and actuating means for said members including a' plurality of worm wheels coaxial with said feed operating member, means whereby each of said members may be driven by either of said worm wheels, and means for effecting rotation of said wormi wheels at different-speeds includingv oppositely rotating worms engaging: respectively therewith.

97. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feedop erating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said teed operating member, and actuating means for said 1ne1nbers including a plurality of worm wheels coaxial with. said feed operating member, means whereby each of said members may be driven by eitherof said worm wheels, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating in opposite directions on parallel axes.

98. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feedingmeans, a truck driving member rotatable on an axis parallel to aline parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said feed operating member, and means for etl'ecting rotation of said worm Wheels at different speeds including worms engaging respectively therewith and rotating in opposite direotions on vertical axes.

99. In a mining apparatus, in combination, a feedoperating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said feed operating member, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating in opposite directions on vertical axes the same side of the axis of rotation of said feed operating member.

100. In a mining machine of the charac ter which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotat able on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, means whereby each of said members may be driven by either of said worm wheels, and means for effecting rotation of said worm wheels at difierent speeds including oppositely rotating worms engaging respectively therewith.

101. In a mining machine of the character which performs its normal cutting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination a feed operating member adapted to cooperate directly with flexible feeding means to efiect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, means whereby each of said members may be driven by either of said worm wheels, and means for efecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating in opposite directions on parallel axes.

102. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the axis of rotation of said feed operating member, and actuating means for said members including a plurality of worm wheels coaxial with said truck driving member, and means for effecting rotation of said worm wheels at different speeds including worms engaging espectively therewith and rotating in opposite directions on vertical axes.

103. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with. flexible feeding means, a truck driving member rotatable on an axis parallel to a line parallel to the a s of rotation of said feed operating member, and actuating means for said members in cluding'a plurality of worm wheels coaxial with said trucl: driving member, and means for effecting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating in opposite directions on vertical axes at the same side of the axis of rotation of said truck driving member.

10st. In a mining machine of the characer which performs its normal cutting opertions while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate di rectly with flexible feeding means to efi'ect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith, means whereby each of said members may be driven by either of said worm wheels, and means for effecting rotation of said worm wheels at different speeds including oppositely rotating worms engaging respectively therewith.

105. In a mining machine of the character which performs its normal cut-ting operations while sliding upon the mine bottom and is transported from one working place to another upon a truck from which it is dismounted during the normal cutting operations aforesaid, in combination, a feed operating member adapted to cooperate directly with flexible feeding means to effect cutting feed upon the mine bottom and movements of the machine relative to and upon a truck, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith, means whereby each of said members may be driven by either of said worm wheels, and means for oil cting rotation of said worm wheels at different speeds including worms engaging respectively therewith and rotating in op posite directions on parallel axes.

106. In a mining apparatus, in combination, a feed operating member adapted to cooperate directly with flexible feeding means, a truck driving member coaxial therewith, and actuating means for said members including a plurality of worm wheels coaxial therewith, and means for ef-