US1824946A - Mining machine - Google Patents

Description

Sept. 29, 1931. F. .CARTLIDGE I 1,824,946

MINING MACHINE Original Filed Jan. 28, 1926 5 Sheets-Sheet 1 M 106 4g 17 4 115 17g Z110 m Zhuenfor: Q Kari? e.

Sept. 29, 1931. F. CARTLIDGE MINING MACHINE Original Filed Jan.

1926 5 Sheets-Sheet 2 Sept. 29, 1931. F. CARTLID GE 1,824,946

MINING MACHINE Original Filed 28. 1926 5 Sheets-Sheet 4 Sept. 29, 1931. F. CXRTLIDGE 1,824,946

I MINING MACHINE Original Filed Jan. 28, 1926 5 Sheets-Shee 5 PatentedVSe pt. 29, 1931 UNITED; mm:

iaalrstrr OFF-1c COMPANY, A CORPORATION or MASSACHUSETTS MINING MACHINE Application filed January 28, 1926, Serial No. 84,464. Renewednecember 27, 1929.

a kerf of a vertical dimension of perhaps six inches, thefree room between the bottom of the kerf and the bottom of the block of coal that is to be removed is insufficient for best results and an unduly large'percentage of the coal is reduced to powdered form too fine for desirable use. In hand mining what is known as a snubbing cut was commonly made and the mouth of this out being considerably deeper than the depth of the kerf at thedeepest point from the face, smaller powder charges could be used and the fallin coal fractured and rolled out ina much b been made to effect the formation of such cuts by machine, but the cutting process reduces to dust all the coal actually out by the bits and. the percentage of fines or slack has accordingly run very high.

In my copending application, Serial No. 580.907. 1 have disclosed a loop bar type machine for making. a cut of this general description and the present invention is animprovement thereover and is designed to permit the formation of a snubbing cut with the production of less-finecoal.

Among the objects of thepresent invention is the provision of an improved mining maa minimum of fines. Anotherlobject of the invention is the provision of an improved mining machine having a pivoted cutter bar of novel form and improved swinging mech- 5 anism therefor. A further object of the nvention is to provide improved feed operate;

ing and cutting mechanism operating gearing. A still further ob ect of my mvention 13 to provide an improved mechamsmadapted 'Other objects of the invention will subseetter" manner than with an ordinary comparatively 25 vertically shallow kerf. Various efforts have chine adapted to form asnubbing cut with.

for bothroom and pillar and longwall cut ting. Other objects of the invention will subsequently appear. a-dn cutting mechanism operating gearing. A still further object of my invention is to provide an improved mechanism adaptedfor both room and pillar and longwallcutting.

quently appear. Withthese objects in View, one feature of the invention involves the provision of aplu- V ralityof angularly disposed cutter bars so,

designed and arrangedthat two comparatively narrow slots or grooves are formed in'the coal and converge from the breast of the coal toward a junction point which may be spaced somewhat from the rear extremity of the block to be broken down; The formation of converging cuts in this manner provides,,de-

pending upon the relationship .of the cutter.

bars, anything between .a V-shaped opening or recess and an opening having a forward V-shaped portion but a rearward parallel sided, comparatively narrow portion.

A further and more specific feature of the inventionconsists in the arrangement of a plurality of cutter bars whose cutting'portions are respectively, at least in part, angu-- larly inclined to each other and each of which carries circulating; cutting elements, while the actuating devices for the cutting elements, specifically the cutter chain drivin sprockets, are disposed on alined axes and actuate them together. This last feature involves the employment of at least one bent bar and the use thereon of a universal chain.

A still further, feature consists in thearnism to serve both as feedoperating and bar swinging-means. {Still further features of the invention and advantages thereof will be apparent from the following specification.

The invention may obviously be practiced in longwall as. well as room and pillar machines'and a mechanism adapted for both operations is disclosed. .A feed chain type of feed or a plural cable type of feed may either one be employed as desired, but only thelatter is specificallyillustrated.

, rangement of feed operating and controlling members and bar swinging means in an 1mproved manner permltting the same mechaa face by mechanism generally designated 5' ing stud member 22.

In the accompanyin drawings in which two forms of the invention is shown for purposes of illustration,

Fig. 1 is a plan view of a mining machine constructed in accordance with the illustrative embodiment of the invention.

Fig. 5 is a vertical transverse section on'the.

line 55 of Figs. 1 and 6 is a horizontal section on the line 66 of Fig. 2, parts being omitted.

Fig. 7 is a detailed section on the line 7'7 of Fig. 2.

Fig. 8 is a similar section showing a modification.

Figs. 9, 10 and 11 are partially diagrammatic views showing respectively in plan, in side elevation, and looking forward, portions of the bar swinging mechanism proper.

Fig. 12 is a fragmentarydetail of a cutter chain. 7 V s Figs. 13, 14 and are diagrammatic views showing the machine in use Fig. 13 showing the positioning of the machine preparatory to starting a cut, Fig. 14 a stage in room and pillar cutting ting longwall.

In its illustrative embodiment the invenand Fig. 15 the machine cuttion comprises a bottom plate 1 upon which 357 a motor 2 is suitably mounted on framing 1 The motor provides power for actuating cutting mechanism generally designated 3, for swinging said cutting mechanism through .mechanism' generally designated 4, and for eifectin feed of the machine transversel of During transverse feed the angle of the ma chine is controlled through mechanism generally designated 6. Themotor 2 is of a well known reversible type. p

The motor 2-is provided with an armature shaft 10 which carries at'its forward a spur pinion 11 which meshes with and drives a spur gear 12 rotating on a horizontal axis above and in the same vertical plane with the axis of rotation of the armature shaft 10. The pinion 12 is keyed as at 13 upon a longitudinally extending horizontal shaft 14.

,The shaft 14 is journaled in bearings 15 and 1 16 111 the forward frame-of the machine which a driving element for the cutting mecha-- nis1n3. The p1n1on18 meshes with a comparatively large bevel gear 21 rotating upon a vertical axis and journa'led upon a vertically extendc The gear 21 housed 1n a chamber 23 at the front end of the frame 17 and a division wall 24 at the bottom of this chamber has a depending cylindrical portion 25 surrounded by a bearing 26 which forms a journal for the upper end of a casting 27 which supports the cutting mechanism.

The casting 27 at its lower end has an arm 28 provided witha bearing 29 surrounding a sleeve 30 upon the lower end of the stud 22.

Adjustably secured to a forwardly. projecting portion 32 formed upon the casting 27 at" its lower end is a cutter bar 33 about whose perlphery a cutter chain 34 having cuttmg elements 35 circulates. A snnilarly proJecting portion 36 is formed near the upper end of the casting 27 and adjustably secured thereto is a second cutter bar 37 which initially extends horizontally as at 38 for a short distance, then inclines downwardly as at 39 and it will be observed that the kerfs cut by the elements 43 and 35 intersect in such manner that the bracket member 40 has a path cut for it on cutting operation of the bars. The cutter chain 42 is of the universal type and comprises between the cutter bit carrying links inteianediate pivoted links 45 having pivots 46 between their ends at right angles to the planeof the other pivots (see Fig.12). It will be observed that the bracket 40 is longitudinally adjustable due to a slot and boltconnection 47.

The stud shaft 22 is surrounded by a sleeve .48, to whose lower end a cutter chain driving sprocket 49 is keyed at 50. The sprocket 49 drives the cutter chain 34. Adjacent its upper end and slightly below the latter the sleeve 48 carries a cutter chain driving sprocket 52 which rotates in the plane of the plane portion of the cutter'bar 37 and drives the cutter chain 42 on the cutter bar- 7 37.- The sprocket 52 is keyed at 53 to the sleeve 48 and above the sprocket 52 the sleeve 48 carries an annular clutch member 54 keyed thereto at 55 and having upwardly opening clutch recesses 56 into which clutch pins 57 carried by a vertically reciprocable clutch member 58 may enter. The pins 57 pass through openings 59 near the hub of the gear 21 and serve to connect that gear with the clutch member 54 and so with the sleeve 48 and cutter chain driving sprocket 49 and 52.

Vertical movement of the clutch pins 57 is controllable by a pivoted member 60 to whose outer end are pivoted depending shifter elements 61 engaging the clutch member 58, and angular movement of the member 60 is controlled by an' eccentric pin 62 engaging in a slot 63-at the opposite end of the member 60 and adjusted by'a controlling handle 64.

The' cutter bar carrying member 27 is formed at its upper endwith a large sheave" n i 1,824,936. 1 p a. I 33 65 having aigroove 66initsouter periphery to clutch sh ift'erwrod 107ipassingsthroughothe receive a bar'sWingingcables A camtoperr-r studi96'iMemberi-107'I is' threaded at its :outeni ated locking pin 67 controlled a han dle68'- end for :*cooperation .With;a; handwheel 110:; engages in; a recess 69 u'pon a boss 70' rigid [Whioltcarriesat the :center thereof a nut; 111;

With the upper cutter bar 38 an'd lo'cks the cutcooperatinguivvith. theathreaded;extremityof i ter bars "in: longitudinal alinem'ent with the me 107;; Asleeveil06 iis arranged insplined machine frame when "such position'is attainedu relation -to rod 107 betweenimember 106 and";

A- similar'cam operated locking pin: mecha-u nut 111 an'd'transmits the pressuree'xerted'byrnism 68 is disposed in a position 90 -aheadiof the. nutto :member .1106. The opposite end of? the locking-pin o? and operates to hold the the-Inember'107 is. attachedto;a:transversely cutter bar atright anglesto the-framell for. extendingrurved member "'1081vvhichi translongWall-cutting; mits:atlon'gitudinallyactingforceto :the-iod Thefeedin'g mechanism 5is driven from-av 107x Thezileft hand .endroffthe member;108 Worm 7 2 arrangedontheshaft-l mid-Waybe carries safithneade'd ibolt imemberxl09 :and

'15 twe'en'the bearings and 16 i" The ivormr72- handa'whee'l- 110 earriesaznut 111 cooperate engages a WOrmWheel'YS keyed to-a sleeve "74 ing;wit11 thebolt and engagingthe lefthand journale'd "at- 75"and 7 6 in the-frame 17 and?) side-10f the machineaframeplooking forward; coaxial With a-shaft 77 "extending transverse l to permitcontro'l of the (loading of ftheachitch i 1y of themachine frame in the same-horizon- 102 from the left hand side of the frame. A;

r tal plane with and in front ofth e'arm'ature pinion'tll2 rigidlyjmountedfon;the'shafti77 85151:

shaft 10. The-shaft 77 is ourna1edatthe mesheswith.the 'gearo99 and drives the'latterLi right hand side of the frame lookingforward Obviously the member 95' may beidriven at in a-bearing 78-inthe' machine frame and at any speedcup;to:thei'speedzofirotationof the M its opposite end in'a-thrust bearing 791 -The shaftz77 by 'appropriate adjustment :of the-" sleeve 7 4 carries aspur pinion '80 having re1al clutch-r102 or maybe left stationary'wvhenzthee tively long teeth 81. The teeth 81 inesh ivitha c 1utch1O2i is not loaded; A flexiblev feed relatively large-spur gear'82 'rigidly'mount cahler113 may'vbeconnected'asrat rlli-to tthe ed on a shaft 83 parallel to the shaft 77. The drum 95:}. a 1 I shaft83 is suitably'journaled at 84, 85 "and- 86 The angular. zpnsitionof the machine iframes- ''in the gear housing 17 and has formed thereondnningicuttingsmay be determined in dif-i' a spur driving pinion 87 which meshes with a ferent 215 8? Aasimple mechanism for thisgear 88 freeljrotatabldupon the shaft 7 7 1A} purposeisshowniin'fligr's and comprises 'a' clutch member 89 has .teetlr90 formedat one: tail ropedriun 115%: (see-P519598) journaledon end thereof adapted to eng'ageth'e ends of the a bearingrllfiupoma laterallyextendingzstud- 1 """teetlr 81 and'at the other'end'thereof-teeth 92* 117i A brakerband 118nentroll'edbyashand @9513 to engage clutch projections'93upon the huhlever 119 throughlsuitablerscrew" and nut" of the gear 88. The chitchsleeve'89 is splined tensionings mechanism- 120% controls rotation: as'at 9 1 to the shaft 77 and is reciprocable' ofithendrum"115 The latter-sis:"providedr"- longitudinally of-the latter toeffectengagewiths'internal ratchettte'etlr122wvith which a inentof the teeth 90 or92a's inay be desiredj paw-l 1123 carried-1 byi'aapawlcarrier"124 e0: less When the teeth 90 engage teeth SI'theshaft operates: The pawl! carrier :is'.-' journale'd 77 'is driven'directlywith'the sleeve 74, but upon aizprojrectingwcentral sleeve 1250f the-:

When-teeth 92 engage the projections -93fshaft dIHHIlHHCh-llls fuponi its outer rend a polygonal 77is'driven by gear 88 througha trainincludsocket2 126 for engagement by asuitable long" mg pinion 80,'ge ar 82,'pinion"87 and gear 88. handledaf Wrenchc ban? or? other implementiller.

The train first mentioned is adapted for ma- Wherebythe: angle 'o-f-the machine may'be chine movement and that last mentioned foraltered bythe operatorns desiredfihe ratchet machine feeding duringcutting; mechanismzidescribed" permitting 'thel--appli-- A' fe'ed op'eratingmember;herein in the cation;oftfdrcesinnthe mostfladvantageous "form of a drum 95, is mountedjcoaXi-ally with manner: Alh andleto -wind the cable may. 1 5 71 a laterallv projetcing stud'96 secured as zit-97" besimilarlyiusedn. At cablelQZ :isIwoun'dio-ni at the right hand sideofthe machine frame drum 115. a looking'forward. The-feed 'operating'mem Apreferredrifdrinof"mechanism: for con- N ber is journaledat one end upon a cylindri trolling .thestai lsrope is, however; illustrated cal'portion 98 offa driving-gear 99 and at'its i in detailfin'fiFigrT and shown also in'the he other-endis supp'orted'upona2disk like mem other rviewsfof themachine; This mechaa ber 100"journaled upon'a bearing 101f'sur nismdis:adzipteditofenable-poWer to be ap- V rounding 'th'e stud 96.1 Africti'on'clutch.102' ,plied'to the tail rope drum: It'will noted? serves to'connect the hub-1030f the geari99' that a stud-161 is suitablyisupported'on the.

with the feed ope-rating m'ember:-95" andrisideof the-machineframeand has journaled fingers 104 extend througlnropeningsf 105 in: thereon' agsleeve162 which: carries'in-rigid the disk meniber 100to'effectffrictional enurelation thereto fari-gear i163 'Whic'lfrm'eshes gagement of'the clutchYlOQf FingersfilO-aret with.and'is'driven'by1gear 99t'. A drumcarried by a circular member 106 imountedr i is jounn'aled f on; a" bearing; -164 isurrounding near the outer end ofeaztransversely extending the hnhz'portionofigear 163;andion: a-rbearingf 13d I 165 near the outer end of'stud shaft 161. The sleeve 162 and the interior of drum 115" each carry in splined relation thereto a series of friction clutchdiscs, the discs splined to the drum being numbered166 and those to the sleeve 167. A plate 168 at the outer end of drum 115 is provided with openings 169 through which fingers 170 on a clutch loading member 171 extend. The stud shaft 161 has a reduced threaded extremity 172 and a threaded hand wheel 173 cooperates with this threaded extremity to apply pressure to the member 171. The tail rope 127 is wound on drum 115. By variably loading the friction discs 166 and 167, the tail rope may be permitted to pay out, be maintained practically uniform in free length, or if the 'friction is load-ed sufficiently, it may be drawn The machine frame supports a plurality of cable guiding sheaves about-which the cables 113 and 127 may be led. At the right 5 hand side of the frame at the rear end of the latter and somewhat aboveits bottom is an angularly pivoted tail rope guide sheave 129' around which the cable 127 may be led off to a take up member at the receding side of the machine. Adjacent the sheave 129 and chine frame. 'At the opposite side of the frame and at the rear is another guide sheave 131 and a sheave 132 is suitably mounted forward of the motor on the advancing side of the machine frame. The live rope 113 passes across from sheave 130 to sheave 131,

forwardly to sheave 132 and around the latter and off to a jack in advance of the ma chine during cuttingacross a face. A central sheave" 133 is arranged at the rear end of the machine to facilitate handling. A sheave 134 is also provided to permit moving of the feed cable as shown in Fig. 13 when it is desired to position the machine preliminary to the sumping in of the bar. sheave 132 is dismountable, together with its support when longwall cutting is to be practiced, and it will be noted. that all the other sheaves are protected during such cutting by an upturned face engaging flange 1 on the bottom plate.

Power for the actuationof the bar swinging mechanism, generally designated 4, is obtained from a worm'135 keyed to the shaft 77. The wor1n'135 engages a worm wheel 136 mounted upon a'hollowshaft 137 which is journaled in bearings 138 at opposite sides upper and lower drums 141 and 142, which 1 may be. respectively frictionally connectedto the shaft by friction clutches 143 and 144 through inner clutch sleeve members 145 trolling the loading of the clutch 143 directly and the hub of the hand wheel 149 is engageable with a head 152 on opposite movement. The head 152 is mounted on a shaft 153 extending through the hollow shaft 137 and carrying at its lower end a longitudinally slidable -clutch loading member 154 which serves to load the lower clutch 144 Accordingly, opposite adjustment of the hand wheel 149 serves to effect loading respectively of the clutches 143 and 144. A continuous cable 155 extends from the upper drum directly to the sheave 65, around the latter, back over a horizontally journaled transversely disposed sheave 157, rearwardly around an inclined sheave 158 and onto the drum 142 Cable 155 is held by wedge means 159 in rigid relation to the sheave 65 so that tension applied to the cable by the drums141 and 142 is operative to effect bar swing. Since the ends of the cable 155 extend in like directions around the drums'141 and 142, it will be obvious that 1 upon clutching of eitherdrum to shaft 137 thelatter will cause drawing in of its respective portion of cable 155 and so the bar may be oppositely swung.

The mode of operation of the mechanism described will lee-already obvious to those skilled in the art, but certain possible opmachine frame may be positioned approximately normal to the working face adjacent the right hand rib (see Fig. 13), the cutter bars 33 and'37 moving back by suitable control of drum 142. Drum 141 may then be caused to draw upon its portion of cable 155 and the bars will make an arcuate sumping out until a position perpendicular'to'the face (see Fig. 14) is reached when they will be alined with the machine frame and may be locked rigid with the latter bylocking pin 67. This swinging sumping out may well be at slow swinging speed, through gars 80, 82, 87, 88, but positioning of the-bar may be accomplished faster by connecting teeth 81 and 90 directly. Of course, in soft coal, swinging during cutting may alsobe at the faster speed. With'the bar now rigidly held in alinement 'with the frame, the machine may be fed across the face as-an ordinary room and pillar machine, cable 113 being led around sheaves 130, 131 and 132 off to a jack in advance'of the machine, and cable 127 around sheave129to a .take up at the right hand ribpfeedj being controlled by drum'95 andangle by drum 115; At the end of the across-the-face cut the pin 67 may be with? drawn and drum 14:1 operated to complete the kerf with a swinging out. For longwall cutting the bar is swung into the coal to the position shown in Fig. 15 and the cable 113 used to'effect feed. During'this operation the feed-drum is Controlled by hand wheel 110 at the right hand side .of the machine frame, i. e. theside away from the face. i

From the foregoing description it Willbe evident that very desirable.results'jmay be accomplished by this mechanism.L Y Relative: ly narrow kerfs may be cut by thetwo cut-v ter bars as each lends strength to the other. The block of coal intermediate the kerfs'will not be reduced to powder, but will fracture ofl in sizable lumps. Further,,the bottom of the coal to be shot or otherwise broken down will be provided with a projecting longitudinally extending shoulder which will engage the bottom and provide for easier fracturing into lump with less powder charges. Moreover, duetothe type ofcut ting mechanism used less power will be res quired than with a loop type bar, and less fine coal needs be produced both because narrower kerfs are possible and because the upper chain run can be shorterthan the low.- er chain run. p i s T While I have in this application specifically described two forms which my invention may assume in practice, it will be understood that these forms of; the same are 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. 7 V a w 7 'What I claim asnew and desire to secure by Letters Patent is: i g I v V 1. In a mining apparatus, a plurality of relatively converging cutter barsfiprovided with relatively movable cuttingelements, and direct driving means for said cutting elements rotating on axes in the same straight line.

' 2. In a mining apparatus, aiplurality of converging cutter bars provided with circulating cutter chains, and drivingsprockets for said chains rotating on axes parallel to the same straight line,saidbars being most widely separated at points adjacent said sprockets.

3. In a mining apparatus, a plurality of converging cutter bars provided withv circulating cutter chains, and driving sprockets for said chains rotating on ali ned axes, said bars being closest at their ends remote from said sprockets.

4. In mining apparatuaa plurality of converging cutter bars provided with circulating cutter chains, and drivlng sprockets for said chains rotating on axes parallel to the same straight line and perpendicular to the plane of one of said bars, said bars converging from the endsadj acent said sprockets means for holding their juxtaposed endsin rigid relation.

7. In a mining apparatus, cutting mechanism including apair of cutter bars spaced at one end and extending into juxtaposition at their other-ends, and means for holding their juxtaposed ends in rigidrelation permitting relative adjustment thereof. V

8. Ina mining apparatus, cutting mechanism including a pair of cutter bars provided with circulating'cutting elements and spaced at one end and extending into juxtaposition at their other ends, said bars being operative to cut intersecting kerfs, and means of a dimension to move freely within said intersecting kerfs for holding the juxtaposed ends of said bars in rigid relation.

9. In a'mining machine, in combination, a machineframe slidable on its bottom over a mine bottom during cutting and carrying amotor, cutting mechanism, a feed operating member adapted to cooperate directly with flexible feeding means and rotating on a transversely extending axis, a shaft extending longitudinally of themachine and carrying spaced elements constituting feed operating member and cutting mechanism actuating elements, and power transmission mechanism between said elements and said member and mechanism respectively, the former transmission mechanism including plural speed gear.- ing whose elements rotate at all'times on parallel stationary axes in advance of said mo tor. I a r a 10. In a mining apparatus, a machine framevslidable on its bottom over the mine bottom during cutting and having at the rear end thereof a motor and wholly at the forward end thereof cutting mechanism, and

means for feeding and guiding said machine.

transversely of a face during cutting including a plurality of independently rotatable feed operating and controlling members each adapted to cooperate directly with flexible feeding means and rotatable onstationary axes on the same side of the machine frame.

11". In a mining apparatus, a 'machine frame .slid able on its bottom over the mine ing a plurality of independently rotatable feed operating and controlling members each adapted to cooperate directly with flexible feeding means and arranged on the receding side of the machine frame.

12. In a mining apparatus, a machine frame slidable on its bottom over the mine bottom during cutting and having at the rear end thereof -a-motor and at the forward end thereof cutting mechanism, and means for feeding and guiding said machine transversely of a face during cutting including a plurality of independently rotatable feed operating and controlling members each adapted to cooperate directly with flexible feeding means and rotatingon parallelstationary axes on the same side of the machine frame.

13, In a mining apparatus, a machine frame carrying pivotally mounted kerf cutting mechanism swingable horizontally to cut a horizontal kerf in a mine wall and actuating means for said cutting mechanism, and selfcontained means for swinging said cutting mechanism including a flexible connection attachment member coaxial with the pivot thereof, a plurality of selectively operable flexible member winding elements rotating on alined axes parallel to the axis of cutting mechanism swing, and flexible connections therefrom to said attachment member.

14. In a mining apparatus, a machine frame slidable on a mine bottom and carrying pivotally mounted horizontally swinging kerf cutting mechanism swingable horizon- 41,, tally to cut a horizontal kerf in a mine wall and actuating means for said cutting mechanism, and self-contained means for swinging said cutting mechanism including a flexible connection attachment member coaxial with the pivot thereof, a plurality of selectively operable flexible member winding elements arranged in juxtaposition on the same side of the machine frame, and flexible connectionscoopearing directly with said winding 5 elements and extending therefrom to said atpivotally mounted kerf cutting mechanism swingable horizontally to cut a horizontal kerfin a mine wall and actuating means for said cutting mechanism, and means for swinging said cutting mechanism including a sheave coaxial with the pivot thereof, a plurality of selectively operable flexible member Winding elements arranged on axes 'lyingin longitudinal extending vertical planes, and flexible connections therefrom to said sheave.

17. In a mining apparatus, a machine frame slidable on a mine bottom and carrying pivotally mounted kerf cutting mechanism swingable horizontally to cut a horizontal kerf in a mine wall and actuating means for said cutting mechanism, and means for swinging said cutting mechanism including a sheave coaxial with the pivot thereof, a plurality of selectively operable flexible member winding elements arranged in juxtaposition at one side of the machine frame and rotating on axes parallel to the same straight line, and flexible connections therefrom to said sheave.

18. In a mining apparatus, a machine frame carrying pivotally mounted kerf cutting mechanism swingable horizontally to cut a horizontal kerf in a mine wall and actuating means for said cutting mechanism, and means for swinging said cutting mechanism including a sheave coaxial with the pivot thereof, a plurality of-selectively operable flexible member winding elements rotating on axes parallel to the axis of cutting mechanism swing, and flexible connections therefrom to said sheave.

19. In a mining apparatus, a machine frame carrying pivotally mounted horizontally swinging cutting mechanism and actuating means therefor, and means for swinging said cutting mechanism including a sheave coaxial with the pivot thereof, a plurality of selectively operable flexible member winding elements rotating on alined vertical axes, and flexible connections therefrom to said sheave. r

20. In a mining apparatus, a machine frame slidable upon a mine bottom during cutting, cutting mechanism carried thereby including a pivoted cutter bar, bar swinging means operative to swing said bar in opposite directions, means for locking said bar in fixedrelation to the frame, means operable independently of said bar swinging means for feeding said machine over the bottom during cutting, and a motor carried at the rear end of said frame and having at the front end thereof connections to said swinging and feeding mechanisms.

21. In a mining apparatus, a machine frame slidable upon a mine bottom during cutting, cutting mechanism carried thereby including a pivoted cutter bar, bar swinging means operative to swing said bar in opposite directions, means for locking said bar in fixed relation to the frame, means operable independently of said 'bar swinging means for feeding said machine over the bottom during cutting, and a motor carried at the rear end of said frame and having at the front end thereof connections to said swinging and feeding mechanisms and to actuate said cutting mechanism.

22. In a mining apparatus, a machine frame slidablerupon a mine bottom during cutting, cutting mechanism carried thereby including a pivoted cutter bar, bar swinging means operative to swing the bar in opposite directions, means for locking said bar in fixed relation to the frame, means operable independently of said bar swinging means for feeding said machine over the bottom during cutting,and a motor carried at the rear end of said frame and having at the frontend thereof connections to said swinging and feeding mechanisms including common reduction gearing 23. In a mining apparatus, a machine frameslidable upon a min-e bottom during cutting, cutting'mechanism carried thereby including a pivoted cutter bar, bar swinging means, means for locking said bar in fixed relation to the. frame, means operable inde pendently of said bar swinging means for feeding said machine over the bottom during cutting, and a motor carried at the rear end ofsaid frame and having at the front end thereof connections to said swinging and feeding mechanisms including common plural speed reduction gearing. I

24. In a mining apparatus, a machine frame slidable up on amine bottom during cutting,-cutting mechanism carried thereby including a pivoted cutter bar, bar swinging means, means for locking said bar in fixed relation to the frame, means operable independently of said bar swinging means for feeding said machine over the bottom during cutting, and a motor carried at the rear end of said frame and having at the front end thereof connections tosaid swing ing and feeding mechanism including common plural speed reduction gearing all of whose elements rotate on horizontal axes;

25. In a mining apparatus, a machine frame slidable over a mine bottom during cutting, cutting mechanism carried thereby including a pivoted cutter bar, bar swinging means, means for locking said bar in fixed relation to the frame, means for feeding said machine over the bottom during cutting, and a motor having at the front end thereof connections to said swinging and feeding mechanisms including common plural speed reduction gearing all of whose elements rotate 0n transverse axes. g

26. In a mining apparatus, a machine frame, cutting mechanism thereon, and means for effecting movement of said cutting mechanism during cutting comprising a plurality of relatively rotatable feed operating members each adapted to cooperate directly with thereto including friction clutch flexible feeding means and rotating on alined feeding means and rotating on alined ver tical axes and means for selectively transmitting power thereto to effect independent drive thereof at like peripheral speeds.

28. In a. mining apparatus, a machine frame, swinging cutting mechanism pivotally mounted thereon, and means for effecting swinging movement of said cutting mechanism during cutting comprising a plurality of feed operating members each adapted to cooperate directly with flexible feeding means androtating on alined vertical axes and means for selectively transmitting power thereto including friction clutches coaxial therewith. 1

29. In a mining apparatus, a machine frame, swinging cutting mechanism pivotally mounted thereon, and means for effecting swinging movement of said cutting mechanism during cutting comprising a plurality of feed operating members each adapted to cooperate directly with flexible feeding means and rotating on alined vertical axes and means for selectively transmitting power 0 means having a vertical axis. I

30. In 'a mining apparatus, a machine frame,cuttingmechanismthereon, and means for effecting movement of said cutting mechanism during cutting comprising'a plurality of feed operatingmembers each adapted to cooperate directly'with flexiblefeeding means and rotating on alined vertical axes and means for selectively transmitting power thereto including friction clutches coaxial therewith and loading means therefor including an operating element extending through said members.

31. In a mining apparatus, a machine frame, cutting mechanism pivotally mounted thereon, a sheave coaxial with said pivot and fixed as to relative movement with re spect to said cutting mechanism, a drum rotating on an axis parallel to said pivot and in the same plane perpendicular to said pivot with said sheave, a second drum rotating on an axis parallel to said ivot but'in a different horizontal plane, exible means passingfrom said first drums to saidsheave and from said sheave to said second drum, and guide sheaves guiding said flexible means between said first mentioned sheaveand said second drum.

32. ,In a mining apparatus, a supporting frame, a plurality of converging'cutter bars pivotally mountedon said frame insuperposed relation, each ofsaid barscomprising has:

an elongated frame and provided with orbit.- ally moving cutting elements arranged to cut a kerf to admit the bar, and means for simultaneously swinging said bars relative to said frame.

33. In a mining apparatus, a supporting frame, a plurality of converging cutter bars pivotally mounted on said frame in superposed relation, each of said bars comprising an elongated frame and provided with orbitally moving cutting elements arranged to cut a kerf to admit the bar, and means for simultaneously swinging said bars relative to said frame operative'to effect swing in opposite directions.

34. In a mining apparatus, a supporting frame, a plurality ofconverging cutter bars pivotally mounted on said frame in super posed relation, each of said bars comprising an elongated frame and provided with orbitallymovingcuttingelements arranged to cut a kerf to admit the bar, and means for simultaneously swinging said bars relative to said frame operative to effect swing in opposite directions including independently operable feeding devices.

35. In a mining apparatus, a supporting frame, a cutter bar pivotally mounted thereon, and means for swinging said bar relative to said frame including a pluralityofindependently operable operating elements rotatable on vertical axes and flexible means cooperating directly with said elements and connectible to said bar.

36. In a mining apparatus, cutting mechanism comprising a cutter chain driving sprocket, a cutter bar havinga portion in a plane perpendicular to the axis of rotation of said sprocket and including the pitch circle of said sprocket and another portion deviating from suchplane, said portionscoopcrating to provide a continuous track for a cutter chain, each of said portions being presentable to the coal to effect cuttingtherealong, and a cutter chain driven by said sprocket and guided by said track comprising bit carrying links and universal connections therebetween.

37. lnoa mining apparatus, a cutter ba having angularly disposed plane portions each presentable to the coal and along each of which cutting is adapted to take place and provided with a circulating cutting element carrying cutter chain comprising cutter bit carrying links, and meansproviding universal connections between saidlinks. V

88. In a mining apparatus, a plurality of relatively converging pivoted cutter bars provided with relatively movable cutting elements, and direct driving means for said cutting elements rotatingon axes in the same straight line.

39. In a mining apparatus, a plurality of converging pivoted cutter bars provided with circulating cutter chains, and driving m n-a sprockets for said chains rotating on axes parallel to the same straight line, said bars being more remote at points adjacent their pivots than at their opposite ends.

a0. In a mining apparatus, aplurality of converging pivoted cutter bars provided with circulating cutter chains, and driving sprockets for said chains rotating on alined axes, said bars being more remote at points adjacent their pivots than at their opposite ends.

41. In a mining apparatus, a plurality of converging pivoted cutter bars provided with circulating cutter chains, and driving sprockets for said chains rotating on axes parallel to the same straight line, and perpendicular to the plane ofone of said bars, said bars being more remote at points adjacent their pivots than at their opposite ends.

42. In a mining apparatus, a plurality of converging pivoted cutter bars. provided with circulating cutter chains, and driving sprockets for said chains rotating on alined axes perpendicular to the plane of one of said bars, said bars being more remote at points adjacent their pivots than at their opposite ends.

43. In a mining machine, in combination, a machine frame slidable on its bottom over a mine bottom during cutting and carrying a motor, cutting mechanism, a plurality of relatively rotatable members adapted tocooperate directly with flexible feeding means to effect machine feeding and guiding, a shaft extending longitudinally'of the machine and carrying spaced elementsconstituting actuating means for said cutting mechanism and said last mentioned members, and power transmission mechanism between said elements and said members and mechanism respectively, the former transmission mechanism including a plural speed gearing whose elements rotate at all times on parallel stationary axes in advance of the motor.

4-4. In a mining apparatus, a machine frame slidable on its bottom on the mine bottom during cutting and having at the rear end thereof a motor and at the forward end thereof cutting mechanism and means. for feeding and guiding said machine transversely of a face during cutting including a plurality of independently rotatable feed operating and controlling members each adapted to cooperate directly with flexible feedin means and rotatable on stationary axes on the same side of the machine frame, and means for positively driving either of the same independently of the other.

fnln a mining apparatus, a machine frame slidable on its bottom on the mine bottom during cutting and having at the rear end thereof a motor and at the forward end thereof cutting mechanism and means for feeding and guiding said machine transversely of a face during cuttingincluding a plurality of independently rotatable feed operating and controlling members each adapt- 46. In a mining .fapparatus,Ia nlllachiiilfl frame, cutting; mechamsm thereon, and

means for effecting movement of said cutting mechanism during cutting comprising a pluthe same. 7

47. In a m ning c apparatus, a machine frame, swinging cuttingmechanlsm p voted thereon, and meansfor effecting swinging movement of said cutting mechanism during cutting comprising a plurality of relatively rotatable feed operatinginembers rotating V I w v i V ,thereon and'means' forefiecting swinging cooperate directly w th a fiex ble feeding on alined vertical axesfand each adaptedlto element 148. In a mining apparatus,cuttingmechanism including a plurality 'of'converging relatively inclined cutter bars each' ca rryinga cutter chain and cooperating to' form'a'polygonal central core opening extending'the'rethrough and adapted to cut out a Wedgeshaped core from the coal face thereby ing a Wedge-shaped kerr; a a I 49. In a mnnngapparatus, cutting mechanism for cutting a Wedge-shapedkerf 1n the coal face including-a plurality of converging relatively inclined planecutte-r'liars provided 7 with orbitallv movablecutterch'ains supportedon their margins. 1

50. In a mimng apparatus,amachme frame,

I and cutting mechanism pivot-allyymounted thereon for cutting a-We'dge-shape'd kerf in the coal face including a plurality of converging relatively inclined cutterbarsianda cutter chain movably mounted on each of said bars.

51, In a mining apparatus,"cutting mechanism including a substantially horizontal plane cutter bar,,and a cooperating cutter having a horizontal portion parallel with said other cutter bar and a doWnWardly'eX- tending bent portion converging with said other cutter bar, said bars each carrying a cutter chain and cooperating to form a core passage and adaptedto cut-out acorefrom thecoalface. f v.

52. In a mining apparatus, a machine frame, cutting mechanism'thereon including a pivoted cutter,-and means'fornef'fecting swinging movement ofsaidcutter in opposlte directions relative to said .frameincl'uding a plurality of relatively rotatable feed operating members and a cooperating flex 1ble element having zitsintermediate portioncon- Qnected to said cutterandits end portions ,di-

any engaging. said .fee'd operating member espe e yi swinging movement of said cutter in opposite direction includinga plurality of relatively rotatable feed operating members and a cooperat ng flexible, feeding element 7 having its ing said cutter. v a 54. In a mining apparatus, a :machine frame, cutting mechanism thereon, and means for effecting movement of said cutting mechanism; during cutting, comprising a plurality of relat velyrotatable feed operating members 7 rotating on alined axes at :like peripheral "speeds ,and a flexible element. cooperating di- "rectly with said feedop erating members and attached to said cutting mechanism.

55. In a miningapparatus, a] machine frame, sw ng ng cutting mechanism pivoted movement; of said.cuttingmechanism during cutt ng, comprising a plurality of relatively rotatable feed operating members rotating 0n alined axesand flexible feeding means con- .ne,ct.ed tosaid cutting mechanism and cooperating directly fivith said feed operating members;

1 56. In a; apparatus, a machine n me slidable on its bottom directly on the minelbottom, cutting mechanism carried by said frame comprising a substantially V- shaped cutter, device vhaving a-central core opening and orbitally movable circulating core cutting elements'disposecl along the forward and receding edges of said cutter device during the transverse cuttingoperation, and

cluding a feed operating. member and flexible feedingmeans cooperating directly therewith and including advance and receding flexible-v feeding portions. 3 o I 57 In a mining apparatus, amachine frame "slidable on its bottom directly on the mine bottom, cuttingmechanism carried by said' frame comprising a substantially V- 'shapedcutterdevice having a central core opening for'cutting a substantially V-shaped full depth'kerf disposed transversely of the vcoal face' at the'base of the minewall, said ends connected directly to said feed operating 1 i fmembers and a intermediate portion engagrality of relatively rotatable feed operating- .members rotating on, alined vertical axes and each adapted to cooperate directlyWith a v flexible feeding element, and a driving ele-v ment therefor coaxial therewith and'betyveen yfOI' cutting" a substantially V-shaped full -depthikerf disposedtransversely of the coal -face at theaba'se of the mine Wall, said cutter odeviceeextending lengthwise of the machine cutter device extendinglengthwise of the machin e during the transverse c uttingopera- ,tion, and means for feeding and guiding the machine during the transverse cutting operatipn including relativelyrotatable feed opi erating' and" controlling members, and i flexible feeding means cooperating directly therewith and including advance and receding flex- 'ible feeding portions.

58. In a mining apparatus, a machine frame slidable on its bottom directly-on the mine bottom, cuttingmechanism carried by said frame comprising a substantially V- shaped pivoted cutter device having'a' centralcore opening for cutting a substantially 'V-shaped full depth kerf disposed transversely of'the coal face at the base of the mine wall,

said pivoted cutter device extending length-r wise-of the machine during the transverse cutting operation, and means for feeding and i guiding the machine during'the transverse "cutting-operation and for swinging said pivoted cutter device relative to said frame including a relatively rotatable feed operating and controlling members and flexible feeding means cooperating directly therewith and including advance and receding tion with a support element and a horizontal kerf cutting element movably mounted thereon for movement horizontally relative thereto to cut a horizontal kerf in a mine wall,of feeding mechanism including flexible draft means having end portions attached toone of said elements, and means to tension different sections of said draft means to move said cutting element selectivelyin different directions relative to said support element, said tensioning means including a tensioning element cooperating directly with-said flexible draft means and rotating on an axis lying in. a longitudinally extending vertical plane. 1

60. In a-mining apparatus, the combination with a support and a horizontal kerf cut- -ter movably mounted thereon for movement horizontally relative thereto to cut a horizontal kerf in a mine wall, of feeding mechanism including flexible draft means, and means ineluding Winding devices arranged wholly at one side of said support for tensioning different sections of said draft means to move said zontal kerf in a mine wall, of feeding mechanism including flexible draftmeans andmeans including winding devices arranged on avertical axis for tensioning different sections of said draft means to move said cutting devices selectively'in different directions relative .to

said support, said draft meanscomprising a single cable section having its end portions attachable to certain of said devices anditsinflexible feeds termediate portion attachable to said other with a support and horizontal kerf cutting devices movably mounted thereon for movement horizontally relative thereto to cut a horizontal kerf in amine Wall, of feeding mechanism including flexible draft means and means including winding devices arranged on a vertical axis for tensioning diflerent sections of said draft means to move said cutting devices selectively in different directions relative to said support, said draft means comprising a single cable section hav-, ing its end portions attachable to certain of said devices and its intermediate portion attachable to said other devices, and means for operating said winding devices to vary the relative position thereof with respect to said attached portion of said cable section.

63. In a mining apparatus, the combination with a support element and a horizontal kerf cutting element movably mounted thereon for movement horizontally relative thereto to cut a horizontal kerf in a mine wall, of feeding mechanism including flexible draft means and means including winding devices rotating on a axis lying in a longitudinally extending vertical plane for tensioning different sections ofsaid draft means to move said cutting element selectively in different directions (relative to the support element, said draft ,means comprisinga single cable section hav of, said draft means to move said cutting element selectively in different directions relative to said support element, said mechanism including winding devices carried by one of said elements and arranged on a vertical axis anda cooperating cable section attached to tion with a support element and a horizontal kerf cutting element pivotally mounted thereon to swing horizontally relative thereto to cut a horizontal kerf in a mine wall, of feed-- ing mechanism including flexible draft means and means to tension different sections of said draft means to swing said cutting element about its pivot selectively in different directions relative to said support element, said mechanism including winding drum: means carr ied by one of said elements and arranged with its axisextending in the same direction as the pivotal axis of said cutting element and a cooperating cable section attached to said drum means and one of set/id elements'respectively. n

66; In a mining maohine, a machine frame 1 adapted to rest upon ands'lidein anyd i rection over theminebottom,'a motor carried thereby, cutting mechanism driven said motor including a pivoted -cuttenbar, feedingmea-ns driven by s'aid motor-for propelling "the machine bodily over the'minebottom during cutting, and mechanism driven by said motor wholly independently of said machine feeding means for swinging said-cutter-bar about its pivot. I

67; In a mining machine, a machine- 'f'rame adaptedtorest upon and slide-in any direction over the mine botto'm, a motor carried thereby, cutting mechanism driven by said motor including a pivotedcutter bar, feeding means driven by said motor for propelling the machine bodily over themine bottom during cutting, and mechanism driven by said motorwholl y independently of said machine feeding means for swinging said cutter bar about its pivot and operable at Will-as the lfllZlClllllG is fedbodily'relative to the coal ace. 7 I i 68. Ina mining machine, a machine frame adapted to rest upon and slide in anyd i-rection'over the'mine bottom, a motor carried thereby, cuttingmechanism driven by said motor including a pivoted cutter bar, feeding meansdriven by said motorfor propelling the machine bodily over the m-ine bottom during cutting, andmechanism driven by said motor wholly independently of said machine feeding means for swinging saidcutter bar about its pivot by power in'opposite directions. v

69. In a mining machine, a machine-frame adapted to rest upon and slidein'anydirection over, the mine bottom, a. motor carried thereby, cutting mechanism driven by said motor including a pivoted cutter bar, feeding means driven by said motor for propelling the machine bodilyover the mine bottom during cutting, and mechanism driven by said motor Wholly independently of said machine feeding means for swinging said cutter bar about its pivot by power in opposite directions and operableat will as the machine is fed bodily relative to the coal face.

70. In a mining machine, a machine frame adapted to rest upon and slide in any direction over the mine bottom, a motor carried thereby, cutting mechanism-driven by said motor including a cutter bar pivoted on said frame and having mounted thereon an end I less cutter chain, feeding means driven by said motor for feeding the machine relative to the coal face including a feed operating member and a cooperating flexible element,

and mechanism driven by said motor for swinging said cutter bar about its pivot wholly independently of said feed operating member and said flexible element and while 1 her about: its; rivet-by said cuttenschain is; disconnected item: aid IIIOtOBs;

'11,. In a; mining-madam. amac ine; tr m adapted; to restfupom and, slidejin any: dir ction. oxen the minebottom. a: motor; a r e thereby; cutting mechani m; driven. by; i motels-including; at pivotedcutter ba fee ing means; dmiivem by aid motor fen-p11 pellingthe machineibod a y overthe mi Qb tt m daring cuttinginclnsiiing a. e d 'p atn mg; member and; al cooperating: fle ible 1 mentjand; mechanism dr iten by aid m o for swinging said euttenabaa; about its: pivot pomerwholz y' independent y f sa d; feed operating memben and; cooperating fle -"g element; f 7

:25 In a a ach ne im adapted: to; rest. IKPQD and. Slidfi any direction'oyerthea-miflfie b ttemt mo or: Carried thereby, eilitting: mechanisin driven by saide motors 'iineltud cnga; piwot cl cutte b e ing means driven by! saidmot r r p pelting-tneman ine bodily ev r: the m neb tonr during Getting. includingra, feed operating menaber -andi a; eeon r ti g: flexi ment, and ni nhan m driv n by ai to I rging eeidi n er b ttalion its pivot 1 lay-1 power'in apposi e di ections h lly i d e pendentln. of seidafead Qnera ing m e adapted ta r st upon. and sl de n any ii ctrim. everthe mine batten, a motor a r d the eby, editi g mechanism drive by s mQQQ-XT lliQlflding a pirat d cutte bar, f

meansdriven eeidmeto or; pr p ting the ma itime bedilv'ever the mine b tt during cutting, and .meelianism. r ve y said. metorrnhel gv indepe dent hot s id machine feeding. means: f r sw nging s id o terb ra eut it piv pow ri oppo t direction wh le; sa f edingmeans pe t i eontinu uvs y in. the sam directi n an operble a will s hemaehiiie is fed bodily r lativ to. the coalx ece I I a mining methineya mach ne fram adapted to restuponand slid 'in any lire 1 5 tion over the mine hottomm motor carried by said frame, cutting mechanismdriven by said motorincludjing a.pivo'te,d cutter bar swingable horizontally 'r'elative: to isaid frame, .feeding and guiding means driven 1 by said motor for feeding the machine bodily laterally over the mine bottom in a direction substantially perpendicular tothe longitudinal axis of the machine'and for guiding the machine during 'sa-id'lateral movement and including flexible feeding elements extending in opposite directions from the opposite ends of said frame and'connectib le-at: their free said frame, cutting mechanism driven by j A said motor lncludlng a pivotedcutterzbar swin gable horizontally relative to said frame, feeding and guiding means driven'by said motor for feeding themachineb'odily-laterally over the mine bottom'in-a direction substantially perpendicular to the longitudinal axis of the machine and for guiding'the ma chine during said lateral movement and including flexible feeding "elements extending -in opposite directions from theopposite ends of saidframe and- "connec'tible at theirfree ends to extraneous abutments, and mechanism driven by said motor 'and oper ated wholly independently of's'aid flexible feeding elements for swinging said outterba r about its pivot relative to' 'said frame and o'perable at will as the machine is fed bodilylaterally relative to'the coal'facef, I 77. In a miningmachine, a machine frame ad'apted'to rest upon and slide in any direction over themine bottom, .a motor carried by said frame, cutting mechanism driven :by said motor'including apivoted cutter bar swingablehorizontally relative to said frame,

feeding and guiding means driven by said a motor for feeding 'the'machine'bodily latally-over themine bottom in a direction sub stantially perpendicular to the longitudinal ,axis' of the machine and for guiding the machine during said lateral movement and including flexible feeding elements extending in opposite directions from theopposite ends of said frame and connectible at their free ends to extraneous abutments, and mechanism driven by said motor and operated tions while said feeding means operates continuously inthe same direction and operable at will as the machine is fed bodily laterally relative to the coal face.

79. In a mining machine, a machine frame adapted to rest upon and slide in any direction over the mine bottom, a motor carried ,by said frame, cutting mechanism driven by said motorincludinga pivoted cutter bar swmga-ble horizontally relative to said frame, feedmg and guiding means driven by said motor for feeding the machine bodily laterally over the mine-bottom in a direction substantially perpendicular to the longitudinal axisof the machine and for guiding thema- H chine during said lateral movement and including relatively rotatable power operated and controlled; feed operating -membersimounted on said frame and fiexiblevfeeding elements cooperating respectively with said feed. operating members and extending in 'opposlte directions from the opposite ends i -In testimony whereof I affix my signature.

7 FRANK CARTLIDGE.

erally over the mine bottom ina direction substantially perpendicular to the longitudi- 'nal axis of the machine and for guiding the a machine during said lateral movement and including flexible feeding elementsextendelements for swinging 'saidcutter bar about its pivotby power in 'opposite directions While saidfeed'ing means-operates continuously in'the samedirection; p r 78. In a mining machine, amachine frame adapted to rest upon and slide in any direction over themine bottom, a motor carried by said frameacutting mechanism drivenby said motor including a pivoted cutter bar swingable horizontally relative to said frame,

feeding andguiding means-driven by said motor for "feeding the machine'bodily later- ,7 ,3 1

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