US1734296A - Mining apparatus - Google Patents

Description

Nov. 5, 1929. M. P. HOLMES MINING APPARATUS 2 Shets-Sheet Original Filed Dec-12, 1924 m, QE

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MINING 'APPARATUS Original Filed Deo. l2, 1924 2 Sheets-Sheet 2 4 Y ed to cut from the tracks.

if which my invention may assume in 1 in Fig. 1.

Patented Nov. 5, 1229 rra MORRIS P. HOLMES, OF CLAREMONT, NE'W' HAMFS'HIRE, ASSIGNORVVTO' SULLIVAN MAK- CHl'NER-Y COMPANY, A CGP-.PORATION OF MASSACHUSETTS I y MINING- APIPARATUS Application led December 12, 1924, Serial No. 755,484. Renewed November 8, 1928.

My invention relates to mining apparatus.

' An object of my invention is to provide an improved mining apparatus. Another object of my invention is to provide an improved mining apparatus of the wheel mounted type wherein the mining machine is adapt- Still another object of my invention is to provide an improved shearing machine adapted to cut kerfs in a vertical plane in the face of the coal. Still another `object of my invention is to provide an improved wheel mounted shearing machine of the pivoted bar type having improved means for swinging the cutter bar and improved means for holding the cutter bar in'its adjusted positions. A still further object of my invention is to provide an improved shearing machine of the self-propelled truck mounted type wherein improved means are provided for propelling the truck during the cutting and transport operations. Still another obj ect of my invention is to provide an improved mining machine of the pivoted bar type having` an improved bar swinging mechanism. These and'cther objects and advantages of my invention will, however,

hereinafter more fully appear.

In the accompanying drawings l have shown for purposes of illustration one form practice.

In these drawings,-

Fig. 1 is a sideelevation of the complete shearing machine, parts being broken away to facilitate illustration.

Fig. 2 is a plan view of the machine shown Fig. 3 is a transverse horizontal sectional view taken substantially on line 3 3 of Fig. 1, parts being omitted to facilitate illustration.

Fig. 4 is a developed sectional view taken substantially on line 4-4 of Fig. 1.

' Fig. 5 is a diagrammatic view illustrating the operation of the machine during cutting.

In this illustrated form of my invention l have shown a truck frame 1 mounted on wheels 2 adapted to move relative to a track way 3. The truck frame 1 has fixed thereupon a unitary mining machine, generally designated 4, herein of the so called longwall type normally slidableon its` own bottom on the mine and having a generally rectangular machine frame 5 disposed on its edge or side; on a horizontal 'plane surface as at '6, on the truck frame. Further, the machine is pro-` vided with an elongated cutter bar 7 having the usual cutter bit. carrying cutter chainv 8 which is adapted to vbe circulated about the cutter bar by means of a usual drive sprochet'8,.the bar being pivoted, as at 9, on a transverse horizontal. axis on the front end of the machine frame 5 ina well known manner.V A usual electric-cable reel 10 is suitably supported on ,the rear end of the truck frame 1 and power medium is transmitted by means of conducting cables 11 and. 12 leading tothe reel and the mining ma; chine driving motor (not shown) 'respectively. The machine driving motor is herein of the usual electric reversible type and by it the usual driving connections for Vthe cutter chain, the improved means for` swinging the-bar aboutits pivot, and improved' meansfor driving the truck wheels, are drive enas hereinafter more fully. described.

ln describing my improvedfmechanism it will herein be observed that the rear end of the horizontally disposed longitudinally eX-V tending armature shaft 13 of the driving motor has secured thereto an armature-pinion 14 (see Fig. 3).'which meshes with a spur gearl lrotatable on a parallel axisvdisposed in the same horizontal vplane as the axis ofthe pinion 14.V As shown, this gear ,15, Vin turn, has secured thereto a. beveljpinitm 16 which meshes witha bevel ,gear 17 rotatable in a vertical plane andrthis gear 17 is suitably. secured by a key to a transversely'disposed horizontal driving shaft 18. The shaftl8 is also adapted to drive suitable Vgearing substantially similar `to that. describedvin my prior Patent No.1,470,570,"0ct.f9, 192S,.and which includes a suitable friction clutch not shown) and a spur gear 19 suitably secured to a sleeve 20'journaled upon a transverse horizontall stud 21disposed parallel with the shaft 18 and inthe rear thereof. ThesleeveV 2() has formed thereon a chain feed sprocket 22 rotatable in a vertical plane and which is adapted to be driven at a fast speed in one direction or at a slow speed in an opposite direction under the control of a suitable lever` 22 and other control means, not shown, in the usual manner as clearly described in the above mentioned patent. The sprocket is adapted to cooperate with an endless fiexible feed or drive chain 23. Suitable guide sheaves or sprockets 24, 25, and 26 are herein provided which are rotatable on spaced horizontal axes parallel with the axis of the sprocket 22 and by these sprockets the chain 23 is guided relative to the drive. sprocket 22. As illustrated, the chain 23 is adapted to pass upwardlyl from the sprocket 22vr andv l rearwardly around the guide sheave 24 and forwardly around a guide vroll 27 rotatableA on a vertical axis, as'at 28, and supported by a suitable bracket 29 secured to the side of the machine frame 5', the chain passing from this guide roll 27 rearwardl around and be- Y 1y secured as by bolts 39 and 40, respectively,

' to the cutter bar 7 Y(see Fig. 4). VThe chain 23 then passesl rearwardlyV around a driving sprocket 41 j ournaled coaxially with the shaft 18 and adapted to be driven from the drive sprocket 22 in an improved manner to be here- `inafter described. Thechain 23 then passes' from beneathl the,V sprocket -41Y forwardly around a guide sprocket 42, similiar-to the sprocket V34', rotatable on a horizontally dise posed pin 43 likewise carried by an arml formed on the members'37 andV 38 and diametrically disposed with respect to the pin 35Vr andthe. bar-pivot 9, and then passes rearwardlyl around a longitudinally adjustable guide and tension` adjustingjroll 44, similar tothe guide .roll 30 and similarlylv mounted vwith respectv to the machineframe 1 but at the opposite edge thereof... A guide roll 45 disposed on an axis coaxial with the axisv of the guide roll 27 but' disposed at the opposite4 y sideV of: the machine frame' isV4 provided for guidingV the v,chain 23 rearwardly and around the guide' sheaves 26 andl 25'V onl the rear end side ofthe driving sprocket ,When the V driving sprocket 22 is driven inv a countercl'ockzwisedirection thecutter bar 7 is swung upwardlyabout'its pivot 9 `at a fast speedA and when the direction lof the driving sprocket 22' is reversed the cutter bar is swung down'- wardly; at a slow or cutting speed, the swingmovement of' the bar being effected. byA

e machine frame. 5 and tothe `lowerl means of the endless chain 23 and suitable connections hereinafter described.

The shaft 18 is provided with a reduced portion 46 projecting laterally from the machine frame 5 (see Fig. 3) and this portion of the shaft has secured thereto, as by a key v47, an annular member 48 having suitable jaw clutch teeth 49. The chain sprocket 41 is likewise provided with jaw clutch teeth 50 oppositely disposed from the jaw clutch teeth 49. Journaled on a sleeve 50 on the portion 46 of the shaft 18 and interposed between the members 48 and 41 is a chain sprocket 5l secured, as at 52, to oppositely disposed sleeves'53 and 54. Moreover, the sleeves 53 and 54 are provided with suitable jaw clutch teeth adapted to selectively cooperate with theteeth 5()V and 49 formed' on the sprocket 41 and the member 48, respectively, in an improved manner.. A chain 55 cooperates with the sprocket 51 and similar sprocket 56 suitably secured to a transverse truck driving shaft 57 suitably carried by the truck *rame 1 at the rear of the` machine frame 5. The sprocket 56 is adaptedr to drive through a suitable friction clutch, generally designated 58, adapted to be oper'- ated by means of a suitable lever 59, a sprocket? 60 Whichin turn drives, through chain and sprocket connections 61 and 62, the truck wheels. A belt connection 1'0: is connected between the casing of the clutch 58 and a pulley secured to the reel 10 constituting a drive fer the latter during truck movement.

It will herein be observed that a shipperl nic-miser 63 cooperates with the sleeves 53 and 54 and this shipper member is suitably secured to a horizontally disposed non-rotatable operating shaft or rod 64 slidable on a combined bracket and chain guard 65 suitably secured to the side'of the mining machine14. It will herein be noted that the guard member 65 is provided with projecting lugs carrying set screws 65vivhich are adaptedto engage the brackets carrying the sheaves 3,()4 and 44Y to adjust the latter to vary the tension of the chain 23.Y As illustrated, the outer endY of the non-rotatable shaft or rod 64 is. provided with a suitable grasping handle 66 which adapte-:l to be held in a plurality of operative posit-ions by means of a spring pressed plunger 67 cooperating with spaced apertures 68 termed iny aportion of the'bracket 65. lBy throwing the clutch shipper` 63 and conse-` quently the teeth formed on the Asleeve 53 into" engagement with the teeth 50 formed onthe chain sprocket 41 the sprocket 51 and hence the truck wheels 2' are driven by means of the chain 23 isr and the drive sprocket 22 at avv slow speed in one direction and lat' a fast speed Q in the opposite direction. -Further, by'throivz ngrthe shipperr63 in an oppositer direction, consequently the teeth formed on the' sleeve intov engagement with the teeth .49'4 formed on; thc member 48', the sprocket 51 and.

consequently the truck wheels 2 may be-driven directly from the shaft 18 at a fast speed.

' The bar swinging members V87 and 88 secured to the cutter bar are provided with a cylindrical surface 69 with which a brake band is adapted to cooperate tohold the bar in its different angular positions and this band is operated by means of a suitable link connection 7l and a lever 72 pivoted at 78 on the machine frame 5. A suitable rack 74 is provided for holding the lever 72 in its adjusted posit-ion.

It will herein be noted that the rear axle of the truck has secured thereto a suitable friction braking device, generally designated 75, (see Fig. 2) which isadapted to be operated through suitable connections 76 and 77 by means of a lever 7 8 pivoted in a suitable manner upon the truck frame 1. This braking .device is adapted to control the movement of the machine at certain times during the Lcutting operation and movementV of the lmachine relativeto a trackway of a steep gradient, consequently preventing an excessive rate of movement thereof. It will further be noted that the forward axle of the truck is provided with a suitable chain sprocket 7 9 with which a section of a chain 8l) isv adapted to cooperate, the free end of the chain being secured, as by a roof jack 8l; (see Fig. 1). I,"Vhen the machine is mov- .ing relative to an inclined'trackway the chain is reeved about the sprocket 7 9 and in case the wheels lose their traction the `machine is none the less fed.

In the operation of my improved shearing machine it will herein be noted that when the machine is moving about the mine at a fast or transport speed, the sprocket 51 is in driving relation with the sleeve 48 secured to the shaft 18'and the truck wheel drive is effected under the control of the friction clutch 58.4 When the machine is disposed adjacent the coal face, the driving sprocket 51 for the truck wheels Ais engaged with the sprocket 41 and the clutch 58 is thrown in and the brake 75 is set, preventing movement of the truck wheels and consequently preventing` rotation of the sprocket 4l. The driving sprocket 22 is then rotated at a fast speed in a counter-clockwise direction under the control of the lever 22 Ydrawing in the chain between the sprocket 22 and the sprocket 41, which is prevented from rotating, and the cutter bar is swung upwardly, by the pull of the chain on the sprocket 84 carried by the cutter bar, from the full line position shown in Fig. 1 to the full line position, as at'A, as shown in F ig. 5, the brake band 70 being released at this time. The brake band 70 is then again set, holding the bar in this position and the sprocket 22 is again driven, causing the chain 23 to drive the sprocket 41 to effect sumping. The sprocket 51 being in driving engagement with the sprocket 41, the truck wheels are hence driven under the control of afriction clutch lto the lower dotted line position C at a slow or cuttingA speed likewise driven from the sprocket 22 which then rotates in an opposite direction. 'I` he brake band 70 is then set and the drive sprocket 22 is rotated in the same direction as during the swinging cut.. The

sprocket being still in operative engagement with the drive sprocket 41, the cuttervbar is withdrawn fromthe face of the coal to the position indicated at D in F ig. 5. The cutter bar is then swung upwardly to the-full line position shown in Fig. 1 and the truck isk i driven rearwardly at a fast speed relative to the trackway, the cable reel l0 winding in the cable 11 at this time, in the usual manner.

vWhile I have in this application specifically described one form which my invention may e 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. Y

TvVhat I claim as new and desire to secure vby Letters Patent is:

1. In a mining apparatus, a truck having running gear, a mining machine thereon having a cutter bar movable relative thereto, and means for drivingthe runningk gear of said truck and for moving said cutter bar relative to the truck including a flexible element common to both functions andmeans for effecting circulation thereof as a whole or movement of portions thereof relativeto another fixed portion including means for holding a portion thereof stationary.

2. In a mining apparatus, a truck having ruiming gear, a mining machine thereon having a pivoted cutter bar, and means for driving the running gear of said truck and for swinging said cutter bar including a flexible element common to both functions and means for effecting circulation of said element as a whole or movement of portions thereof relative to a fixed portion including means for holding a port-ion thereof stationary.

3. In a mining apparatus, a truck having running gear, a mining machine thereon having a cutter bar pivoted for movement in a vertical plane, and means for` driving the running gear of said truck and for swinging said cutter bar including a iexible element common to both functions and means for effecting circulation of said element as a whole or movement of portions thereof relative to a fixed portion including means for holding a portion thereof stationary.

4. In a mining apparatus, a truck having portions thereof relative to another fixed portion including means'for holding a portion Vthereof stationary.- Y

5. Ina fmining apparatus,a truck'havmg running gear, a mining machine thereon havving a cutter bar movable relative thereto, and

means for driving the running gearof said truck andy for moving said cutter bar relative to the truck positively in opposite Adirect-ions including a fiexible transmission element and separate members engaging said flexible element, one of said members constituting a `driving member for said running gear and the other member constituting a driving -member for moving said 'cutter bar.

6. In a mining apparatus, a truck having running gear, a mining machine thereon having a pivoted cutter bar, and means for drivingthe running gear of said truckand for swinging -said cutter bar positively in opposite direct-ions including a flexible transmission'element and separate members engaging said flexible element, one of said members constituting a driving member for said running gear and the other member constituting a driving member for'moving said cut-ter bar. `7". In la mining apparatus, a truck having running gear, a mining machine thereon having a cutter bar pivoted for movementin a vertical plane, and means for drivingy the running gear of said truck and for swinging said cutter bar positively in opposite directions including a flexible transmission element vand separate members engaging said 'flexible element, one of said members constituting a drivingmember for said ruiming gear andthe other member constituting a driving member for moving saidcutter bar. 8. In a mining apparatus, a truck having Yrunning gear, cutting mechanism movably mounted on said truck, and means for driving the running gear of said truck and for moving said cutting mechanism relative to the truck positively in opposite directions including a flexible vtransmission element and separate members engaging said flexible element, one of said members constituting a driving member for said running gear and the other mem- V ber constituting a driving member for moving said cutter bar.

9. In a mining apparatus, a truck having running gear, cutting mechanism movably mounted on said truck, and means for moving said truck and for moving said cutting mech` aniam` positively in opposite directions including a common endless iiexible element operatively connected to said cutting mechanism and said running gear at spaced points along its length, and means-for applying power to said flexible element. n

10. In a mining apparatus, a truck having running gear, cutting mechanism pivotally mounted on said truck, and means for moving said truck and for swinging said cutting mechanism positively in opposite directions including a common endless flexible element operatively connected to said cutting mechanism and said running gear at spaced points along its length, and means for apply.- ing powerto said flexible element.

11. In a mining apparatus, a truck havingV running gear, cutting mechanism movably mounted on said truck for pivot-ingabouta horizontal axis, and means for moving said truck and for swinging said cutting mechanism positively in opposite directions including a common endless iiexible element operatively connected to said cutting mechanism and said running gear at spaced points along its length, and means for applying power to said flexible element. y

l2. In a mining apparatus, a truck having running gear, cutting mechanism vmovably mounted on said truck, and lmeans for moving said truck and for moving said cutting mechanism relative to said truck positively in opposite directions including a common endless flexible element and a plurality of selectively efiective power elements cooperating directly therewith.

13. In a. mining apparatus, a truck having running gear, cutting mechanism pivotally mounted on said truck, and means for moving said truck and vfor swinging said cutting mechanism positively in opposite directions including a common endless flexible element and a plurality of selectively effective power elements cooperating directly therewith.

14. In a mining apparatus, a truck'having running gear, cut-ting mechanism movably mounted on said truck for pivoting about a horizontal axis, and means for moving said Itruck and for swinging said cutting mechanism positively in opposite directions including a common endless iexibleelement and a plurality of selectively effective power elements cooperating directly therewith. 15. In amining apparatus, awheeled truck, a mining machine mounted thereon having a pivoted cutter bar, and means for swinging said bar about its pivot and for driving said truck at a slow or fastspeed including a plurality of selectively effective feeding members and a single Vflexible member cooperating directly therewith and transmitting power to drive the truck and to swing the bar. 1

16. In a mining apparatus, a wheeled truck, a mining machine mounted thereon having a cutter bar movable in a vertical plane, means positively for moving said cutter bar in opposite directions including a final flexible transmission element, and means assoiso ciated with said moving means driven directly by said transmission element for-driving the wheels of said truck.

17. In a mining apparatus, cutting'mechanism movable in a vertical plane, and means for moving said cutting mechanism including a plurality of sprockets, a exible member cooperating constantly with said sprockets, and means for holding one of said sprockets stationary while therother draws in said flexible'member.

18. In a mining apparatus, a wheeled truck, a mining machine mounted on said truck having av cutter bar movable in a vertical plane, and means includingr a flexible transmission element for driving the wheels of said truck and for positively moving said cutter bar in opposite directions, and. separate membersv directly engaging saidflexible element, one of said members constituting a driving member for the truck wheels while the other member constitutes a driving member for moving said cutter bar.

' 19. In a mining apparatus, a truck, a imining machine mounted thereon provided with a cutterpbar movable in a vertical plane, and means to move said bar positively in opposite directions and drive said truelr including an endless' flexible member cooperating therewith at. spaced points along its length', and means for applying power to said flexible member. p f

20. In a mining apparatus, a truck, a mining machine mounted thereon having a cutter bar movable in a vertical plane, and means for moving said bar oppositely by power in-V cluding a driving element carried by said miningmachine rotatable in avertical plane and an endless flexible member, cooperating therewith, a portion of said flexible member being stationary during ,movement of said bar while another portion thereof is actuated by said driving element. Y

21. In a mining apparatus, a truck, a mining machine mounted thereon having a cutter bar movable in a vertical plane, and means for moving said bar and driving said truck ineludinig plurality Yot' selectively effective dri fing kmembers and a common flexible member cooperating ydirectly therewith to effect bar movement or trucl drive selectively.

22. In a mining apparatus. a wheeled truck,

a mining machine mounted thereon having a cutter bar movable relative to the truck in a vertical plane, and means for driving said truck ata plurality of speeds including a flexible element operatively connected withV said cutter bar and means cooperating with said element to cause it to effect bar movement relative to the truck including means for, holding a portion of' said element sta-f tionary.`

23. In a mining apparatus, a wheeled truelr,j a mining machine mounted thereon having a cutter bar movable-in a vertical plane, means for driving said truck at a plurality of .speeds including ya flexible transmission element operatively connected with saidA cutter bar and said truck wheel driving means at different points along its length and operative to swing said bar in its plane, and means for applying power to said flexible element including a manually operable friction clutch.

24. In a mining apparatus, a wheeled truck, a` mining machine thereonvhaving a movable cutter bar,means for driving lthe wheels of said truck and 'for moving said bar in opposite directions by power including a common flexible transmission element, separate members engaging said flexible element, one

Vof said members constituting a truck wheel driving member while said other memberv constitutes driving member for moving said cutter bar, and means for varying the tension of said element.

25. In a mining apparatus, a wheeled truck,`

a mining machine thereon having a movable cutter bar, means for driving theI wheels of said truck and for moving said bar positively in opposite ydirections including acommon flexible element and separate members engaging said flexible element, one of said inembers constituting a truclrwheel driving member while said other member constitutes a driving member for movingfsaid cutter bar, and means including an adjust-able guiding member for varying the tension of said element.

26. In a mining apparatus, a wheeled truck, a mining machine thereon having a movable cutter bar, means for driving the wheels of said'truclz and for moving said bar positively in opposite directions including a vcommon flexible element, and means including a plurality of longitudinally adjustable guiding members for varying the tension ofv said element.

Y 27. In a mining apparat-us, a wheeled truck, a mining machine mounted thereon having a driving motor and a cutter bar movable in a vertical plane, and transmission means driven by said motor constantly cooperating with said bar and connectible at will with the truck wheels for swinging said bar in either direction in its lane and roaellincsaid truck in opposite directions, said truck wheels being driven by the final transmission element of said bar swinging means. K

. 28. In a miningapparatus, a wheeled truck, a mining' machine mounted thereon Ahaving a driving motor and a cutter bar movable ina vertical plane, and transmission means driven by said motor constantly cooperating with said bar andconnectible'at will with thetrucl: wheelsvfor'swinging said'bar in either direction in-its plane propelling said truck in opposite directions, said transmission meansinl cluding a pluralityof independently operable friction devices, one of which controls 30. In amining apparatusa wheeled truck,-

V a mining machine of the type normally operplane,

ative to cut when sliding on its bottom over a mine bottom resting on its edge thereon having a pivoted cutter bar movable in a. vertical and meansconstantly cooperating with said` cutter bar for swinging the same about its pivot in opposite directions.

V31. In a mining machine, a wheeled truck i movable over a track way, a mining machine of the type normally operative to cut when slidingon its bottom overa mine bottom supported edgewise thereon and secured thereto comprising feeding and cutting mechanisms,

'l the latter including a forwardly extending cutter bar, means supported by said truckand forming a transversely disposed pivot relative to which the bar is'movable in a vertical plane', operative connections constantly engaged'with said bar for moving the same about its pivot in either direction, andV truck wheel driving mechanism cooperating with said barv swinging means for moving said pivot relative to said trackway.

32. In a mining machine, a truck movable Vover a trackway, a self-propelled mining Y forming a machine of the type normally operative to cnt when sliding on its bottom over a mine bottom supported edgewise thereon and securedr thereto including al forwardly extending cutl ter bar, means for drivingv said truck, means pivot for said bar supported byy said truck and located above the latter, and means constantly engaged with the bar for swinging said bar about its pivot Lin either direction to insert a vertical kerf in an upstanding face which isperpendicular totheV line of the trackway, said means being associatedl with said truck driving means.

33. In aV mining machine, a truck movableover a trackway, a self-propelled mining machine disposed edgewise thereon and secured thereto including a forwardly'extending cutter bar supported by sai-d truck and located above the latter, a self-contained means constantlyl cooperating with said bar for swingling? the same in opposite directionsto-insert a vertical kerf in an'npstanding face which is l Y(50v f bar movable in arvertical plane, means for,

perpendicular to the line of the trackw'ay.

' 34. In a mining machine, a pivoted cutter swinging said bar about its pivot-positively in either direction including an endless flexi-V ble'transmission element yand', means for hold-`A fesV4 ini; a.y portiongof saidilexible element station-A ary during swinging of said liar, and means for ad]usting the tension of said element.

35. In a mining machine, a pivoted cuttery bar, and means for swinging said bar about its pivot positively in either direction includ-- bar, and means for swinging said bar about rotatable n its pivot including. a plurality of members and a flexible element which constantly cooperates .with each of said members, and means for holding one of said members stationary and to rotate the other by power.

37. In a mining apparatus, a mining machine having a pivoted cutter bar, and means to swing said bar oppositely about its pivot while the latter remains stationary including a pluralityof guidel rolls swingable with said bar anda flexible member cooperating with said guide rolls in identical reeve during swing in either direction.` p

38. In a mining apparatus, a mining machine having a cutter bar pivoted to swing in a Vvertical plane, and means for swinging said bar including a plurality of sheaves swingable with said bar and a cooperating endless flexible element.

. 39. In afmining machine, al cutter bar movable in a vertical plane, means for moving said bar including a plurality of rotatable members and a flexible element constantly associated therewith, and frictional means forV holdingl one of said members stationary while the other actson said exible element. 40. In a mining machine, a pivoted cutter bar, fiexible transmission means including a flexible transmission element forswinging said bar about its pivot, said means being opter bar, means including a flexible member for moving said bar, and means including a brakeband for holding* said bar in its adjusted position.

42. In a mining machine, a movable cutter bar, means forvmoving said `bar in opposite directions including a flexibleelement, and means associated with said means including a brake band for holding said bar in its adjusted position.

' eratively connected to said bar at a point off'- Y set from its pivot, and friction means inde-` 1.1A

iis

4:3. In a mining machine, a pivoted cutter i bar, and means for swinging said bar about its pivot including a plurality of projecting arms carried p thereby, a guide sheave rotatably carried by each of said arms for-rotation rela; tive thereto, and` a flexible member-cooperating with lsaid sheaves. i

44. In a mining machine, a main frame, a cutter bar pivoted thereon, and means to swing said bar about its pivot including a plurality of angularly disposed guiding members and an endless flexible element cooperating therewith. 1 1

45. In a mining machine, a main frame, a cutter bar pivoted thereon, means to swing said bar about its pivot includingr a plurality of angularly disposed guiding members and 'an endless flexible element cooperating therewith, and means to operate said element at different speeds. y 46. In a mining` machine, a main frame, a cutter bar pivoted thereon, means to swing said bar about its pivot including a plurality of angularly disposed guiding members and an endlessflexible element cooperating therewith, andmean's to operate said element at different speeds in opposite directions.

47. In a mining machine, a pivoted cutter bar, and means for swinging saidbar including a' double strand endless flexible connection, a portion of said flexible connection being stationary during swinging of said bar.

48. Ina mining machine, a driving motor, a feed operating member driven thereby, a pivoted cutter bar,andinean's to swing said cutter bar about 'its pivot including an endless double strand flexible element cooperating with said feed operating member and means for vholding-.a portion of said flexible element stationary during bar swing. 7,49. In'a mining machine, a pivoted cutter bar,means for swinging said bar about its pivot including a plural-'strand flexible element, 'means for holding a portion, of said element stationary during bar swing, and means for adjusting, the tensionof said strands. Y Y Y 50. In a mining machine, a pivoted cutter bar, and means for swinging saidbar about its pivot in opposite directions including` a plurality of double strand flexible connec' tions.

51. In a mining machine, a machine frame, a cutter bar pivotally mounted thereon, and means for swinging said bar including an endless flexible connection, means for holding a point y therein stationary, and means for moving another portion thereof.

52. In a mining machine, a machine frame, a cutter bar pivotalfly mounted thereon, yand means for swinging said bar including an endless flexible connection, reeved in a polygon, and means for changing the shape of said polygon to effect swing. y

53. In a miningvmachine, a machine frame, a pivoted bar thereon, and means for effecting bar swing including a vflexible element cooperating with a fixed point and with said bar at opposite sides of its point of cooperation with said fixed point and a flexible element movingY member.

54. In a mining machine, a machine frame,

a pivoted bar thereon, and means for effecting bar swing while its pivot remains stationary including a flexible element cooperating with the bar and with a stationary point, and means cooperating with said element to change the distance between the point of cooperation with the bar and the fixed point.

55. In a mining apparatus, a ymachine frame, al pivoted cutter bar thereon, and means for swinging said bar including an endless flexible element cooperatively connected with said bar at spaced points, means for imparting a movingforce to the portion of said element at one side of said points, and means for holding said element stationary cooperating with the portion thereof at the other side of said points.

56. In a mining apparatus, a -machine frame, a pivoted cutter bar thereon, and means for swinging said bar including an endless flexible element cooperatively connected with said bar at spaced points, and means cooperating with the portions ofsaid element at each side of said points to effect bar swing. I

57. In a mining apparatus, a truck having running gear, a machine body thereon, cut-v ting mechanism carried by saidbody includ'- ing a cutter bar movable relative thereto, and means for driving said running gear and for moving saidV cutter bar relative to said body including an-endless flexible transmission element, said means including separate members directly engaging said'flexible element at different points along its length, one of said members constituting a driving member for said running gear and the other meming said cutter bar. Y,

58. In a mining apparatus, a truck `.having running gear, a machine body thereon, cutting mechanism carried by 'said body including a cutter bar movable relative to said body, and means for driving saidrunning gear and for moving said cutter bar-relative ber constituting a driving member for mov- 'to said body including a flexible transmission element operatively connected to said cutter bar' and said running gear at spaced points 'along its length, and means for applying power to said flexible element.

59. In a mining apparatus, a truck having running gear, a machine body'thereon, 'cutting mechanism carried by said body including a cutter bar pivotally mounted thereon for swinging movement in a vertical plane, andv means for driving the running gear of said truck and for swinging said cutter bar including a Hexible transmission element operative to transmit power to drive the running gear and operatively connected to said cutter bar at a point offset from the bar pivot.

60. Ina mining apparatus, a truck having Y running gear, a machine body thereon, cutting mechanism carried by said body including a cutter vbar pivotally mounted thereon for swinging movement in a vertical plane, and means ordriving the running gear of 'said truck and for swinging said cutter bar including a flexible transmission element operative to transmit powerto drive the running gear and operatively connected tosaid cutter bar, and means for holding a portion of said flexible element stationary during Y cutter bar including a flexible transmission bar swing.

.61. In a `mining apparatus, a truck having running gear, a machine body thereon, cutting mechanism carried by said body including a cutter bar pivotally mounted thereon for swinging movementy in a vertical plane, and means for driving the running gear of said truck and for swinging said y and means for driving the running gear of said truck and for swinging said cutter bar including a flexible transmission element, said flexible element constituting the final transmission 'element through which said bar swinging mechanism is driven and being operative to transmit power to drive the run-A ning gear. Y

63. Inza mlmng apparatus, a truck having running year, a machine ybody thereon, cutting mechanism carried by said body including a cutter bar pivotally mounted thereon for swinging movement in a vertical plane, and

means for driving the running gear of said truck and for swinging said cutter bar including aflexible transmission element, and means for holding a portion of said flexible element common to both functions stationary while another portion thereof is Y drawn in to effect bar swing.

64. In a mining machine, a machine frame, a cutter bar pivotally mounted thereon, and means for swinging said bar including-an endless flexible transmission connection movable in an orbit, and means for-changing the position of said orbit during bar swing. 65. In a mining machine, a machine frame,

a cutter bar pivotally mounted thereon for swingingr movement in a vertical plane, and means for effecting bar swingincluding la flexible transmission element cooperating with a fixed point and with said bar at oppositesides of its point of cooperation with the fixed point, and a flexible element moving member.

66. In a mining machine, a machine frame, a pivoted bar thereon, and means for effecting bar swing including anV endless flexible transmissionelement having `double strand connections each cooperating-with said. bar and at opposite. sides of its point of cooperation with a fixed point, and a flexible element moving member. y

67. In a mining apparatus, a wheeled truck, a mining machine mounted thereon including cutting mechanism swingable in a vertical plane to cut a plane kerfand means associated with said truck wheels and said cutting mechanisms for driving the former iny opposite directions at different speeds and for swinging the latter during thecutting operation, said swinging mechanism including a final endless flexible transmission element adapted to transmit a direct swingingv force to said cutter bar. Y l

68. In a mining machine, a pivoted cutter bar, means for swinging said bar fabout its pivot in opposite directions including a plurality of double strand flexibleA connections, andy frictional means forholding said cutter bar in its different` adjusted positions.

69. In a mining machine, a wheeledtruck, a machine body thereom'cutting mechanism carried by said body includinga pivoted. cutter bar, and means for Vdriving the wheels ot said truck and for swinging said cutter bar about its pivot including a plurality of double strand flexible connections.V 1

70. In a mining apparatus', a wheeled truck adapted to run along a trackway,a machine frame on said truck, cutting mechanism on said frame including a cutter bar swingable vertically to cut a vertical kerf, mechanism for driving the wheels of the truck to propel the apparatus along the trackway, and means for swinging said cutter bar during the cutting operation including a final-endless llexible transmission element adapted to transmit a direct bar swinging force to said cutter bar.

71. In a mining apparatus, a wheeled truck adapted to run along a trackway, a frame on said truck, cutting mechanism on said frame including a cutter barswingable vertically to cut a vertical kerf', mechanism for driving the truck wheels to propel the apparatus along the rtracliway, and means for swinging said cutter bar at a relatively slow cutting speed and a relatively high positioning speed including a finalendless flexible transmission element adapted toftransmit a direct bar swinging force to said cutter bar. 7 2. In a mining apparatus, a wheeled truck adapted to run along a trackway, a frame on said truck, cutting mechanism on said frame including a cutter bar swingable vertically to cut a vertical kerf', mechanism for driving the truck wheels to propel the apparatus along the trackway at a slow cutting speed land at a relatively high transport speed, and means for swinging said cutter bar at a relatively slow cutting speed and at a relatively YhighY positioning speed including a final endless Laietanav flexible transmission element adapted `to transmita direct bar swingingforce to said cutter bar. Y Y i 1 73. In a mining apparatus, a 'wheeled truck 'adapted to run alonga trackway, a frame on said truck, a motor carried by said frame `and havingits power shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism on said frame including a cutter bar swingable to cut a plane lerf, driving connections between one end of said power shaft and'said cutting mechanism, driving connections between the opposite end of said power shaft and the truck wheels for propelling` the apparatus along the trackway, and means constantly operatively connected to said bar and driven from the same end of said shaft as said truck wheel driving connections for swinging said bar in opposite directions in a plane path.

7 4L. In a mining apparatus, a wheeled truck adapted to run along a trackway, a frame on said truck, a motor carried by said frame and having its power shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism on said frame including a cutter bar swingable to cut a plane kerf, driving connections between the front end of said power shaft and said cutting mechanism, driving connections between the rear end of said power shaft and the truck wheels for propelling the apparatus along the trackway, and means constantly operatively connected to said bar and driven from the rear end of said shaft for swinging said bar in opposite directions in a plane path.

7 5.V In a mining apparatus a wheeled truck adapted to run along a trackway, a frame on said truck, a motor carried by said frame and having its power shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism on said frame including a cutter bar swingable vertically to cut a vertical kerf, driving connections between one end of said power shaft and said cutting mechanism, driving connections be` tween the opposite end of said power shaft and the truck wheels for propelling the apparatus along the trackway, and means constantly operatively connected to said bar and driven from the same end of said shaft as said truck wheel driving connections for swinging said bar in opposite directions in a plane path.

76. In a mining apparatus, a wheeled truck adapted to run along a trackway, a frame on said truck, a motor carried by said frame and having'its power shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism on said frame including a cutter bar vertically swingable to cut a vertical kerf, driving connections between the front end of said power shaft and said cutting mechanism, driving connections between the rear end of said power shaft and said power shaft andsaidv cutting mecha nism, driving connections between the opposite end of said power shaft and the truck wheels for propelling theapparatus along the traclway, and means constantly connected to said bar and drivenfrom thesame end of said shaft as said truck wheel driving connections for swinging said bar in opposite directions including a final flexible transmission element at all times operatively con-` nected to said bar and constantly operative toA effect bar swing in opposite directions` 78. In a miningapparatus, a wheeled truck adapted to run along a trackway, a frame on said truck, a motor carried by said frame and having its power shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism on said frame including a cutter bar swingable'to cut a.v plane lier-f, driving connectionsbet-ween thel front end of said power shaft-and said cutting mechanism, drivingjconne'ctions between the rear end of said pewer shaft-andV the trucl; wheels rfor propelling'the"apparatus alongthe trackway, and means constantly connected to said bar and driven from the rear end of said shaft for'swinging said barin opposite directions including a final flexible transmission element at all times operatively connected to said bar and constantly-operative to effect bar swing in opposite directions.

7 9. In a miningapparatus, a wheeled truck adapted to run along a. trarckway, a frame on said truck, a motor carried by .said'frame and having its power-shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism driven from one end of said motor including'a pivoted cutter, bar, a plural speed transmission mechanism driven vfrom the opposite end of said motor and a rotatable winding member driven thereby, a liexible transmission element operatively connected to said bar at spaced points therein and engaging said winding member at a point therein between said spaced points, said winding member bel Ving rotatable through said pluralspeed transmission mechanism tok effect bar swingl at different speeds, and mechanism-drivenA from the same end-,of the motor as Vsaid transmission mechanism for driving the truck Ywheels to propel the apparatus along the trackway.

' 80.v In a mining apparatus, a wheeled truck adapted' to run along a trackway, a frame on said truck, a motor carried by said frame and having its power shaft horizontally disposed and extending longitudinally of the apparatus, cutting mechanism driven from the front end of said motor including a pivoted cutter bar, a plural speed transmission mechanism driven from 'the rear end of said motor and a rotatable Winding member driven thereby, a flexible transmission element operatively connected to saidbar at spaced points therein and engaging said winding member at a point therein between said spaced points, said winding member being rotatable through said plural speed transmission mechanism to eect' bar swing at different speeds, Y and mechanism driven from the rear end of said motor for drivingthe truck wheels to propel the apparatus along the trackway.

81. In a mining apparatus, a wheeled truck ,adapted to run along a trackway, a frame on said truck, cutting'mechanism on said frame including a pivoted cutter bar, mechanism for effecting bar swing in opposite directions at different speeds including` a rotatable chain sprocket and a flexible'chain engaging said sprocket and having its portions at the opposite sides of said sprocket operatively connected to said bar, said chain constituting the final transmission element for transmitting a v'direct bar swinging-force to said cutter bar,

and mechanism for propelling the truckv along the trackway'.

82. In a mining apparatus, awheeled truck adapted to runalong a trackway, a frame on said truck, cutting mechanism onv said frame including a pivoted Acutter bar, mechanism for effecting bar Swingin opposite directions at different speeds including a relativelv slow cutting speed inV one direction and a relatively high positioning speed in the opposite direction includinga rotatable chain sprocket and a flexible chain engaging said sprocket and having its portions extending from said sprocket operatively connected to said bar,

' said body 'berlmovable about Vahorizontal axis, and Y mechanism-for. moving' said member about its saidchain constituting the final transmission element for transmitting a` direct bar swinging force to said cutter bar, and mechanism for propelling the truck along the trackway. 83. `In a mining apparatus, adapted to'run along a trackway, a bodyv on said ltruck, cutting mechanism mountedy on vsaid body including a cutter bar moving member-rotatable about a horizontal axis, and

a wheeled truck d mechanism for rotating said member includ'- ing av` final endless flexible 'transmissionele"- ment operatively connected to said member to transmit-a direct swinging force thereto.

84. In a mining apparatus, a wheeleditruck adapted to run al'ongf'a trackway, fa' bodyfon said truck, cutting mechanism mounted on including a cutter carrying mem- CERTIFICATE F GQRREC'IIGN.

Patent Ne. I, 734, 2%.

Grantee Nevember 5, 1929, to

MORRIS P. HIMES.

It is hereby eerted tha above numbered patent requri the Werd "mine" insert the word werfzs "psitveIy msspeled Word "im: the Word "piane" read "gear, and tine 45, stri insert the same te olow "element' after the werd "apparatus" insert a should be read with these record of the ease in the Patent 0f Signed and seae this 13th day Iuding read t error appears in the printed ng correction as eows:

bottem"; p for read "for postvely"; page insert the word "and";

ke out the words specification o theA Page I, tine 52, after age L, Irte t28, claim I6, for the 5, tine 48, eaim Z1, tor the irreuding", and lirse M7, eam 28, ater page 8, line 37, claim 63, fer "year" "eemmon to beth urxetons" and in line 43; page 9, lrae 37, claim 75,

eemma; and that the said Letters Patent corrections therein that the same may eenorm to the tice.

o May, A. D. i936.

M. J. Moore, Acting Cemmissoner of Patents.

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