US1704918A - Mining and loading machine - Google Patents

Description

March'lZ, 1929., E. c. MORGAN K 1,704,918

MINING AND LOADING MACHINES y Fixed May 24. 1921 2 sheets-sheet `1 March 12, 1929. E. c. 4Mzvrzcsm 1,704,918

y AMINING A ND LOADING MACHINES kif.:

EDMUND C. MORGAN,

or neutroni; n, Yj; oni-vn' EUGENIE ivronGAlv or' sam Ent/ruim o. MORGAN; nnenAsED;

PA-r s r orrics.

MINING AND "LOAZDNG MACHINE.

Application filed May 24,

Mv invention relates to mining and loading-machines and is an improvement on the mining and loading machines disclosed 1n my co-pending applications Serial No. 346,- 903, liled Decemberv 23rd, 1919-, and Serial No. 424,050, tiled November '15th, 1920.

One of the objects of my invention is the provision of simple and e'l'licient anchoring and controlling mechanism 'for coaldislodging mechanism of thesplitting type.

The further object `ofi the invention 1s the provision of the improved loading apparatus l'or mining.mechanism comprising coal splitting devices.

Another' object of the invention is the provision oi improved means for controlling the direction and position of coal splitting mechanism.

Another, object of the invention is the provision of the improved upright anchoringdevices particularly adapted lor use in connection with coa-l splittingrmechanism. Other objects of the invention Will appear hereinafter, the novel'features and .combinations being set forth in the appended claims'. l'

In the accompanying drawings, Fig. l is an elevation, of an embodiment of my invention; Fig.'2,` isa Aplan vieW- of thesmining` and loadingv machine, showing theA relative positions of the various parts Iincluding lire loading apparatus ,'Fig. l8 is a plan vievv of the loading conveyor adapted to be connected to the coal receiving conveyor of the loadingl apparatus; Fig. 4'is any elevation of the lmding` conveyor shown in Fig. 3; Fig. is a detailed sectional view ofthe various valve devices adapted to be used for controlling the hydraulic motors and. hydraulic root jacks; F ig. 6 is'an elevation of 'ihe valve shown in Fig. 5; Figs. 7 land 8 are enlarged detailed views of `a scraper type oli cirnveyor which may be used Vin the iding apparatus, including boththe refconvcyor, shown in Fig. 2, and the loedi' j' conveyor shown in Fig. 3; Fig. 9 is a diagrammatic illustration ot' the poiver plant indicated on Fig. 2; and Fig. 10 is a diasl nmmaftic view illustrating an improved inethoi'l ol opcrution of the splitting'` mechanism shown in Figs. l and A2.

Referring 'to Figs. l and 2,11 designates `.rting frame which-is adapted-'to rest l slide over tno mine floor. Extend- ,rerffllg rom the central portionoif 1921. Serial 'No.' 472,043.

the base frame ll isa cylinder`12, .romthe vupper` endy oit which projects a plunger 13 in position-to engage the rooflof the mine chamber' to iirmly anchor the base' frame- 1l in lixed and stationary position.` The hydraulic root Jack Comprising a cylinder 12 and. ,plunger i3 maybe controlled. by a valve l14, the details and' construction of which .may be as shoivn in Fig. 5.-

By turning theA handley 15A to the positionL .shown in Fig. 5, the passagewayl lf3-Will nects the pipe 18' tothe exhaust pipe 2l, the

Weight oit the plunger" 134 will force the liquid out of the cylinder '12and thus cause EXECUTRIX the root-jack to be released. It should be noted that when the valve shownfin. Fig. 5

is used for controlling the operation ofA a`r root jack aplug 22 isf'inserted to cut oft1 communication between the vport 23 and the valve passages 16 a-n'd20.v It willA thus be seen that-for ahydraulic roofja'clra' threeway valve is used 'to effect control of such roof jack. f

Mounted on the cylinder. 12 for 'vertical adjustment alongthesame is a supplemental frame 24 comprisinga cylindrical collar 25. The latter is provided Witha' set screw 26 in positionto engage the cylinder l2 and hold the supplemental frame 24 against turning when in adjusted position)Y Pivotally connected at 27 to the supple-- mental frame 24 is ar hydraulic cylinder 28 in Whiohis located a piston-29 having aplston rod QOfe'irtending outwardly and forvva-rdly thereirom, and carrying at. its outer end the splitting toolfl as shown in Figs l and 2. y

Secured `to the supplemental frame 24 are spaced apart brackets 32 and 33 in' which are liournaled the-end 'portionsofI a Worm r 34 Whichis pro-videdwith a squared head 35 for receiving ayturningztool. The worin 34 meshes with ai Worm gear segment-,86 Which is keyed to a shaft 27-v secured to the lrear end of the cylinder 28., Therefore when the Wormi34 is turned the splitting tool 31 may be; 'adjustedi in elevation on the horizontal axis of the shaft 27. Thefsplitting ktool may thus be inclined:I upwardly or downwardl" or be adjrl-sted -to occupy horizontal posi tlm). f

loo

` with the splitting tool mechanism may be Y turned about-the cylinder l2 and secured in adjusted position as illustrated diagrammatically at Ll0 in Fig. l, or the set screw may engage the cylinderk l2 at the position designated 4l. to hold the splitting tool inclined laterally in 'the desired direction.

`Such adjustment laterally can easily be effectedbecause the lower end of the screwthreaded rod 38 Vslides arcuately over the base plate 1l.

It should also be noted that when t-he set screw 26 is released the supplemental frame .24 together with the coal splitting mechanism carried thereby, may be adjusted in `elevation by turning the screw-threaded rod 8S 1n one direction orthe other, depending upon whether the coal splitting tool is to be lifted or lowered. 1

Extending rearwardly from the coalsplitting tool'l is a longitudinal rod 4t2 extending parallel to the cylinder 28 as shown in Fig. 2. This rod l2 extends through a hole inthe collar 43 mounted on the outer end of the cylinder 28 and provided with a set screw lll tor securing the collar 43 in adjusted position. `Spaced apart recesses 45 may be provided in the outer circumferential portion oitI the cylinder 28, 'for receiving the set screw 44. By loosening the set Vscrew lll andturnmg the collar 43 the rod 42 is carried with ythe latter since therpiston rod 30 and the piston 29 are free to rota-te in cylinder 28. r

In order to control the operation of the splitting tool a valve 46 may be connected to the pipes 47 and 118 as shown in Fig. 2. The valve 46 may be constructed as shown in Fig. 5, but with the plug 22 removed, so that the port 23 may act as the pressure supply port tor directing the liquid through the passage 2O and Vthe-pipe 1li' into vthe cylinder 28 atthe lett ot the piston 29,` while at the same time the liquid at the right of the piston 29 will be exhausted through the pipe -lS and the passageway 16 to the exhaust pipe. lit will thus be seen that when the valve structure shown in Fig. 5 is used :for controlling the operation of a hydraulic motor comprising a piston movable back and forth in a cylinder the plug 22 is removed Aand all four ports 17, 18, 21 and 23 put into service. The aort 23 becomes the ressure supply port, the pipes 17 and 2l lead to the ends of the cylinder at both sides of the piston and the pipe 18 becomes the exhaust port. i

y Although a hydraulic pump may be connected directly to the supply port 23 l prefer to `use a powergplant including an accumulator system so that the splitting tool may be supplying air pressure to the cylinder. 51" back of the piston 52 on the other side of which is an accumulator plunger 53 movable in a cylinder 54 of reduced diameter. The supply pressure port 23 may lead from the accumulator cylinder 541 to the valve Li6 shown in Fig. 2. The pump 55 may be connected between the waste tank 56 andthe accumulator cylinder 54k as shown in Fig. 9. By maintaining` air pressure back of the piston 52 the liquid in the`r cylinder 54 will rush through the supply port 23 as soon as the valve i6 is operated to move the piston 29 to the lett.l The splittingtool Sl'will therefore be moved quickly to the mine wall and as soon as this occurs the continued operation of the pump 55 will exert suilicient pressure on the liquid in the cylinder 28 to move the splitting tool into the mine vein to dislodge the coal. I prefer to have the accumulator system so arrangedv that when the valve 46 is opened to cause thepiston rod 30 to moveioutwardly7 the splitting tool will be movedV very rapidlyand with considerable force to make a stroke against the mine wall to split the material therefrom. ln some instances where the coal is particularly'hard the. hydraulic pressure exerted by the accumulator may he increased by increasing the air pressure. ln other words, the pressure in thefac'cumulator system will be regulated by varying the air pressure in accordance with the nature of the coal to be dislodged. Y

It should also be understood that the splitting tool may also be operated with a slower movement after it engages the material without dislodging the same; then the continued operation of the pump will continue to exert powerful pressure back of the piston 29 to .moveithe same forwardly, slowly but very powerfully, to dislodge the coal in the path of travel of the splitting tool 31.

Pivoted at 57 to the rear portion of the base frame 1l is a rearwardly extending `frame 58, intermediate the ends of which may be mounted the roof jack comprising a cylinder 59 'and `a plunger 60'. The cylinder 59 is provided .With a collar 61 lWhiehsis adapted to rest on a spring 62 Which' in turn rests on thev upper surface oi the frame 58.

This spring '62 'tends to hold the cylinder' 59 trame r58iat 64 is a frame 65 which is pro-" vided with another roof jack comprising a cylinder 66 and a plunger 67. The cylinder 66 is provided With a collar 69 resting on a spring68 which is mounted on top of the framev65. A valve 70, similar to the one designated 68, is provided for controlling the operation of the vroof jack on the frame 65. When the plunger 67 is in its loiver position, the spring 68 holds the cylinder 66 upfotl' the ground. v

It should be understood .that in. those locations Where the floor and root' of the mine chamber are ofsuflicient strength, the roei jack on the frame 11A will -be sulhcient to hold the machine 'in properl position during operation of the splitting tool, but where the iioogr and roof, or either of them, tend to yield to 'the pressure oic the roof jack, a plurality of roof -jacks'ma'y be provided so as to distribute the pressurel onthe roof and floor, and thus obtain the requisitev anchorage for the machine. Vhere a plurality of roof jacks are provided to secure this distributed pressn're on the Hoor and roof I prefer tov mount them on separate `frames, such as those indicated 11, 58 and 65,l flexibly connected together as indicated at 57 and 64so that the frame l1 may be moved laterally on the pivot 57 when the-hydraulic jack l2 is re-` leased, Without releasing the :hydraulic acks 59 and 66. In the samenianner both the frames 1l Vand 58 `may be moved laterallyon the pivot 6st When the plungers lrand 60 ar'e released,fwithout releasing the plunger 67. A c c wWhen all of the roor'jacks, including those designated'12, 59 and 66, are released, the springs 62 and 68'Will hold the rootl jacks 59 and 66 cleared fro'mthe floor, thus facilitating free movement oit vthe supporting framework to desired loca ion in the n.iine.

ln order to move the framework, together with the mining mechanism mounted thereon, rearwardly, the free end 7l of rope '72'is connected to the rear end 73 of the l'rame 65. This rope is connected' to and wound on'a rope drum 74, connected to a shaft oi a motor mounted on theira'me 76. Thelatter may be anchored by means of the roof jack 77 inclinedl upWardlyand for# Wardly trom the frame 76 to the root" as yshown in 1. Upon operation' oi' the motor 7f3 inl lthe proper direction,v the rope 72 will be Wound on the drum 74 toi pull. the i'ranieivork together'wlth the parts mounted thereon and connected thereto, rearwardly or to the right as viewed in Figs. l and 2.v

In order to move the mining machine lorivard step by step to new loeationsfer miningoperations I have provided al pair .ot hydraulic motors 78 and 79, pivoted respectively at 8O and 8l, to the upper suriace` of the trame 11. Each of these motors7 8 and 79 is provided with a piston movable along a cylinder, each piston being provided with a piston rod extending out of the'roar end ot' the cylinder and connected respectively f to roof jacks 82 and 88. These roof ja'clis are respectively provided with control-ling 'valves Sli-and 85, eachV similar vto that shown in Fig. 5, with a plug 22 in position to close communication to the port 28:

-By referring to F l, it Will be seen that the roof jack 88 comprises the cylinder with the plunger 86 extending out of theupper end thereof". The cylinder is provided With a collar 87 resting ona spring88 which in turn rests on a collar 89 rigidly connected to the piston 990i the n'iotor` 79. The roof jack 82 is similarly constructed by being provided with a collar restingy on spring which in' turn rests on a collar connected to the piston 'rod 91 of the motor 78. c

it should be particularly noted that each of theinotors 78 and79 may be svvunglaterally'to various angular positions Whenpthe roeil acks 82 and 83 are in released position. riihis can readily be done because the springs y88 hold the roofjacls ofi the floor when the 'plunger-s 86 and 92' are in their lov/er positions.' For instance, the motor 7 8 may jbc swung' to the various vpositions .indicated by the dotted lines98, 94 and 95.k In asimilar manner the-motor 79 may be swung to various angularfpositions such as those indicated by the dotted lines 96 and 97. After either motor 78 or 79 has been swung on its pivot 8O or 81 to the desired angular position, the roof jack 82 or 88 may be operated so as to be securely anchored between the floor and roof. l s

In order to move the machine forward, the roof jaclis l2, 59 and 66V are released and the roof' jacks 82 and 83iane`ooired in the posi-` tions shown in Fig. 2. The valves 98 and 99 each similar to" that shown in Fig. '5, with' vthe plug'22removed, may thcnbe onerated to `control theoperation of the motors- 78l andV 79. When' the cylinders of the motors 78 and 79 are moved forward or to the left, as viewed in Fig. 2, the iii-ame il together withv the splitting vtool mounted thereon, Will be moved ytothe left.' tjshould be noted, however, that the valves 98 and'99 Amay also be`- operatedy to' eifect rearward movementV ot the frame 1l and' the parts jacks 82 and 83 are released and the motors 7 8 and 79 operated to move said root" jacks 82 and/33 forward to new positions, and then by anchoring the root gaclrs and operating;` the motors 73 and 79 Vthe. tor- Ward movement oli' the :trame 11 can be rcpeated. v

The loading Aj )paratns comprises a conveyor l'raine 100 pivotally connected at 101 to one side et' the forward end ot the Ytrame V11. This conveyor frame may be provided With a scraper type of conveyor comprising spaced apart endless iliarallel chains 102 provided with cross vflights 103 adapted to moveV along a lixed bed plate 10-1 en the conveyor lira-nie 100 shown in Figs'. 7 and 8. Sprechets 105 may be connected to the chains to drive the same and these sprockets may he operated by the motor 10G. Y

The frame 100 niay be provided with a scoop 107, as shown in Figs. 1 and 2, in position to scoop np 'from the l'loer the dislodged material and direct the same onto the scraper conveyor, which transfers the material later ally into the hopper 103 shown in Figs. 2,

The loadine conveyor 109 is mounted on a separate frame 110, adapted to rest onand slide over the mine floor. Pivotally connected at 111 and 112a1e separate hydraulic motors V113 and 1141` respectively, the piston rods oie. which are-connected to roof jacks 115 and 116. The construction o't each oit these root jacks is shown in elevation in Fig. l.` A collar 117 restscn a ,spring 113 which in turn rests on a collar 119 connected to the rear end et the piston rod. Ava-ive 120 is provided for the purpose ol' controlling the operation'ot' the roof jack.

lV hen the plungers 121 and 122 are in their lower positions, the motors 113 and 114 may be swung on their pivots 111 and 112.` For instance, the motor 113 may be swung to the dotted line positions 123 and 121. 1n a similar manner the motor 114-. may he swung; to the dotted line positions` 125 and 126. lNhen the .motors 11.3 and 114 are in parallel relation, as shown in Fig. 3, and the hydraulic root jacks '115 and 11G are anchored, the valves 127 and 128 may be operated to control the motors 113 and 114 to move the 'trame 110 forwardly or rearwardly. After the :trame 110y has Vbeen moved forwardly, the root and 116 may be released and the motors 113 and ,1111 operatedto move suchroot jacks forwardly to a new location. y

When the roof jacks 115 and 116 are anchored in thepositions shown-,in Fig. 3, the traine 110` will he held in such position that the loading` conveyor 109 Will be directed to a predetermined location of a mine ear. V 1n order to maintain this location for a period of time and to maintain the conveyor' 100 in delivery eonnnunieation with the hopper 108, l have provided a long arm 129 adapted to he pivoted at 130 to the frame 11 or secured thereto indicated at 131 in Fig. 2. The arm 129 is provided Awith the ring 132 extending around the hopper 110 as shown in 3 and t. By means of this arrangement the inin- .mev machine may be adjusted to new locatiens step by step along` a long are, having as its center-the center ot the hopper 4108. Brit. it should also be noted that if the inining machine is moved substantially rectilinearly along' amine Wall, the conveyor 100 may nevertheless be maintained in delivery communication with the hopper 108 although the loading conveyor is adjusted laterally relatively to the hopper and on 4the center thereof. For instance, Whenthe mining machine is anchored vin the position shown in Fig. 2, and the arm 129 is con` nected to the trame 11 at 131, the roof jacks 115 and 116 may be released and either et them moved to their dotted line positions so as to secure lateral movement of the loading conveyor 109 While the ring 132 remains stationary. A

lt will thus be seen that When the traine 110 is moved laterally the loading conveyor swings on the center of the hopper 103 Within the ring,` 132, but in any event, Whether the mining machine is turned about the hopper 10S or the loading-conveyor is turned in the ring' 132, delivery communication is maintained between the receiving conveyor 100 and thehopper 108 through an angle ot 180V degrees or more; It, should also be noted that the arm 129 is dctachably con* nected at 131'to the trarne 11 and that the conveyor i''rame 100 is detachably connected to the irznne 11 at 101. When the entire miningv and loading` machineis to be transported to various places in the mine, or into Y stantially automatically by dislodging the coal from the mine vein andl delivering itinto amine ca r which may be located at either side ofthe hopper 16S, er at the rear O- l; i"-

Vi' -weriiiltorward strole of the coal splitianisin to dislodge the coal in onev ci' withthe loading conveyor in a'linementy with the receiving conveyor.`

In Fig. 10, I have illustrated in elevation vthe face i323 on whieh'the splitting' tool 3l. is adapted to operate-when the machine is lin the position shown in Fig.V 2. The preferred method or' operation is to direct the' splitting tool vagainst thecenter of the face lb lo bij-cal; out a block of coal asindicated at 15E-i in Fig. l0. Then it will be easier to dislodge 'the upperl block olf coal 135 afterI 1the splitting tool has been adjusted to a poi adj cent the root.. Subsequently the splitting tool may be-inoved to a position nearthe floor to dislodge the. block of coal indicated at 136 in F ig. 10. The splitting tool 3l is pointed and wedge shaped'as'shown in 2 and is comparatively narrow in thickness as shown in Fig. l. The construction-ot this splitting tool with the power behind it are vsuch as to dislodge the coal in coiiiparatively-l, large blocksk or chunks with a minimum of slack,y and While itV` preferred to operate continuously along a mine wall to dislodge such large blocks the splitting mechanism may be swung laterally on the cylinder 12 and secured in V zuljusted positionl as indicated at 40V and eil, in Fig. l, sothat additional large pieces 0i coal may be dislodged along the tace being operated on.

igbviously those skilled in the Lartv may make various changes inthe details and ar-V rangement oi' parte withoutkdeparting lfrom he spirit and scope otmy invention'as de liieil by the claims hereto appended. I desire, therefore, not to be restricted yto the precise construction' herein disclosed.

Having thus fully described vand illustrated an embodiment of my invention what I claim and desire toA secure by 'Letters Patent oi" the United States is l. In a mining machine, the combination 'il' ichs distributed oirthe sections of said iieworl, pivotal connec'tionsbe'tween the ions of said 'trame'worklto permit relative swinging movements ot such sections, coal splitting mechanism connected gto'y said framework, and means for'operating'said coal splitting mechanism to eXert'continuous fom/'ard pressure to effect dislodgmen't oi the coal from tlie'mine wall.

2, In a mining machine7 the combination with a supporting vframe, of coalsplitting` n'ieclijanism mounted thereoir and comprise' ing a motor adapted to be operatediby liquid pressure, and means comprising hydraulic pump and an air pressure accumulator sysor operating' said` motor to secure a ring inecl co1 niious u'oiwar-:l movement.`

o, r 1,. iv' h b' i; e. in a lig machine@ e com mation i li sectional framework, or a pluralityoil` with a supporting frame, of aA hydraulicr'oof jack thereon,-coal splitting mechanism mounted on said'hydraulic roof` jack, a sup- 1L leinentaI-rame pivotaliy connecte'd'to said supporting frame, an additional hydraulic root jack' on saidl supplemental infame, a third frame, a'ltliird hydraulic jacl; on the last named traine,fspi-iiigs for holding the secondi named and llast named hydraulic jack of? the Vfloor when in released oo'sition, and valves connected to theV respective hy draulic roof jacks for controlling the Same individually. i i' i Y In aimining and loading machine, the combination with mining mechanism,l ol' a receiving conveyor, detacliably connected thereto, a delivery conveyor, and a remov-v ableconnection between said mining mechanism and" saiddel'ivery conveyonfsaid min. ing mechanism and said receiving conveyor and said delivery conveyor being ltransportable as separate units.V

5.y In aminng andloadingmachine, the combination'withmining mechanism, or a conveyor frame pivotally connec'tedthereto, a conveyor on said conveyor frame, a scoop on said frame in position toV direct material 'from the floor onto said conveyor, andmeans' Vont by being: individually pivoted thereto,

separateroof jacks for said motors, and

inotorsto eil'ect adjustment of "the-position of said supporting frame. j

7. In' a mining.machine,'the vcombination with a conveyor" frame, of: a pair ci: iiuid pressure motors pivoted iiidividuallyrto the Asides of said frame, individual Vanchoring y means for Acontrolling the operation ofsaid 1 jacks 1lor said motors, and means for con- Y trolling said motors to "swerve said "frame to` ad] ust the position thereof.

v8. In a' mining and lcadingiinachine, the

combination' with a supporting frame,`v of means! for anchoring thesame, coal split'- kting mechanism comprising a liquid pressure motor'fond-islodging the coal by continuous forward powerful pressure, a receiving conor in adjusted position through ai range of 180 degrees or more relative to the-delivery connected to said supporting frame andeomprising a ringsurrounding said hopper to,

maintain said receiving conveyor' in delivery communication with said hopper throughveyor pivotally connected to sai-d supporting rend of said receiving conveyor, a^circulai"f y. hopper between saidconveyors, and an arm F.

out the various relative adjustments of the mining mechanism and the loading appa` ratiis comprising both said conveyors.

9. ln a mining machine, the combination with supporting framework, oi' a plurality et' distributed root jacks for lirmly anchoring said framework in stationary position to form a rigid abutment, coal-splitting mechanism mounted on said ran'iework and,`

com irisino` a wedino tool ada ated to iene- C D D Vtrate the coal in its native bed and by wedging` action4 split such coal from the unmined mass in comparatively large lumps, and means for operating said coal-splittiiig mechanism by very powerfully pressing said tool into the coal by continuous forward movements against such abutment.

10. kIn a mining and loading machine, the combination with a portable supporting traine, of mining mechanism mounted thereon, a. `receiving conveyer, a delivery conveyer, a hopper between said conveyers, and a longv arm detachably connected to said supporting frame and extending therefrom to said. hopper to maintain said receiving con-y veyer in delivery communication with said hopper.

swing laterally relatively thereto, a reet vjack for anchoring the Vouter end ot said 11.v ln a mining machine,lthe combination with a supporting iraniani a 'huid pressure motor pivotally connected V.to said traine to motor in adjusted position to eil'ect movement of. said frame upon the operation oi said motor, an additional roof'jack for anchoring said supporting traine to term a Iil) motor adapted tol be A.operated by rhinV rigid abutment, alpenetrating wedging tool adapted to operate recti'linearly to dislodge coal from. anv upright mine wall, an additional fluid pressure motor for operating said tool when said frame is anchored by said additional roof jack,` and means for cont-rolling the operation ot' said last-named fluid pressure motor. y

12. ln a mining machine, thecombinatioii with framework comprising a plurality of sections flexibly connected together, of a plu rality of roof jacks distributed on the sec.` tions oi said frame work, coal-splitting mechanism connected to said liamework, and

` means for operating said coal-splitting mechanism torexert continuous forward pressure to etlect dislodgment of the coal t'rom the mine wall while said roof jacks are anchored etween the floor and roof of the mine chaincontinuous forward pressure-to effect dislodgment of the coal from the mine wall.

14. ln a mining machine, the combination with a supporting1 frame, ci a roof jack thereliigir, disledging.mechanism mounted on said supporting 'fi-aine, means for operating said dislodging mechanism, an additional root jack, means tor holding said. additional roeie pick ott the floor when in released position, means for controlling theoperation ber to forni a rigid abutment for suoli coaly splitting mechanism.

13. In a mining machine, the conihination with a supporting frame, of eoal-spli mechanism mounted thereon and coniprisi pressure, and means for operating .said

Yniotor to cause said coal-splitting mechan ism to move quickly to its work and there after be automatically moved with powerful of said additional roof jaclnto vanchor the saine between the floor and roof of the mine chamber, and aV motor connected. between said additional rootl jack and said supporting iti-aine to effect adjusi'iiieiitoii the latter when Vsaid first-named root jack is in released position.

. 15. ln a mining machine, tliecoinbination with a supporting "frame, of mining mechanism mounted thereon, ai'oof jack, a spring' for holding said roof jack oli the floor when in released position, and a motor connected between saidrool jack and said supporting iii-aine lfor adjusting the position ofthe lat ter and the nfiining mechanism mounted thereon. I Y i 16. In va mir `'-ng machine, the combination with a supporting' frame, of mining mechanisni mounted thei'eoin-arinotor pivotally connected to saidl supporting traine, a roof jack connected to said motor to act as an abutment 'for the latter when shitting the position oi said'supporting iframe together with the. mining mechanism mounted thereon, and a spring for automatically holdingV erated to shittthe position oi said supporting frame together with the mining mechanism mounted thereon.

18. ln a ii'iiningniachine, the combination with a supporting frame, of an auxiliary iframe havinggan openingextending vertically therethrough, a root Vjack extending through said opening, a lateral extension from Vsaid root jack, and a resilient support engaging said lateral extension for holding the root' ,jack oliiz theriiloor when said rootl `jack `iii released position.V

19. ln a mining machine, the co'iiibination with. a hydraulic root Jack connpirisinga hjy'dranlic cylinder havii'ig an annular flange intermediate its end f a plunger in said cylinder,` and a resilient support under said Atlange for holding the cylinder off the i'loor when the root jack is in released position.

2U. ln a mining machine, the combination lll moes 1 s `floor when the root jack' is in released position to venablesaid supplemental. frame to be sivungiireely .relatively to said main Jrame.

22. In a mining and loading machine, the combination with mining mechanism, of a receiving conveyor detachably connected thereto,fa delivery conveyor having a hopper at its receiving end, an arm connected rectly between said hopper and said mini-ngmechanism to maintain delivery communi? ycation between `said receiving conveyor 'and said hopper by holdingthe hopper spaced a predetermined distance troni, the recoivinn' end of said receiving conveyor, and a `movable .connection between said arm and said mining mechanism, said mining nieclry anism and said ieeeivingconveyer and said.r

delivery conveyor being transportable 'as separate units. Y

v23. n a minino andloadine machine, the combination with ,ing mechanism, oi means for operating said mining mechanism,

f a conveyer trame pivotally connected to saidy mining mechanism' on Yan axis extendingtransversely to the path ot' movement there of, traveling conveyer on said conveyer framein position to operate transversely .ot the path of travel ofthe mining mechanism, a scoop on said frame in position to dir ict material from the floor onto saidconveyer, and ymeans for moving the mining .mechanismv to a lnewlocation and at the ysame time operating said scoop. g

24. In a mining and loading machine, the combination with a supporting frame, of

vmeans for anchoring said supporting `trame to forni a rigid abutment, `coal-splitting mechanism, means for operating said 4coalsplitting mechanism While said frame is anchored 'to form such abutment, a conveyor connected'mto said iframe, gathering means for directing material on said conveyor, and means. for operating said gathering means by moving said support-ing frame to a new location. A Y y i 25. In a mining machine, the combination with a supporting trame', of a pair of moto-rs connected tothe sides of said frameby being individually pivoted thereto, separate' roof jacks for said motors, means `for autornatiycally holding said roof ljacks off the Hoor fliQ When in released position, `and means for controlling the operation of said motors to effect adjustment ot the position of said supporting frame. v- Y 26, lnainining inachine,fthe combination With a conveyor traine, of a pair of motors pivoted individually `to, the' sides ot said trame., individual. anchoring jacket-or :aid motors, n'ieans 4or automatically holding said anchoring jacks oil the licor when in released positioinand means for controlling sail motors to swei've said raineto adjust the position thereof; o g Y 27. In amining and loading machine, the combination with a supporting traine, of means for anchoring the saine, coal-splitting ,mechanismmounted onU said trame, a receiving conveyor pivotally connected to said .supporting trame, a scoop movablewith said conveyor on said pii'otalr connection flier directing dislodged ii'iaterial ifromthe door ontoV said conveyor, a loading conveyor,l means for adjusting the position oftlsaid' loadingl conifeyer relative to said receiving conveyor, a hopper betiveensaid conveyors, and a connection .between saidhopper and said supporting frame. Y y p c 28. ln a n'iiningmachine, the combination.. with a portable trame, of dislodging apparat is mounted thereon to move bodily there- With Vand comprising coal-splitting 'mecha-- inem, and'meaiis comprising ivallnngroof jacks for moving said frame iectiliinearly Valong an upright mine wall to effect the op! ino eration ot said dislodging apparatus.`

Cil

29. ln a. min-limT machine the combination With a frame, oit coal-splitting .mechanism mounted thereon to move bodily therewith, a pair of root )ac-ke, fluid pressure motors between said ro'olE jacksy and said frame, and

means for controlling the operation of said roof jacks and vof said :fluid pressure 'iotors to cause said rool" iacks to be moved forwardto anchoring positions and to cause said` iirameto be moved forward step by step tov force said coal-splittingmechanism along rectilinear lines into engagement with' the coalA to split the latter from the unnjiined mass. Y

30. In a mining machine, the combination f with a supporting frame,rof coal-splitting mechanism comprising a penetrating' Wedgino` tool, splitting mechanisniby moving said penetrating l Wedging` tool along the face of the mine vein With-pastea'dy forwardpressure While'maintaining the ivedging tool contin-uously in .contact With the .unmined massI along the forward path of travel, means for' mounting said coal-splitting mechanism for larciiai'ze adjustment relative yto saidfkframe on an unright axis to enable the coalssplitting mechanism to` be operated a number of times against the coal in its native lbed to each time dislodge coal fronithe uninined i i o means for operating lsaid coal mass in comparatively large lumps, and means for securing said coal-splitting. mech: anism in its adjusted position in lined relation to said frame in advance of each forward penetrating stroke of said wedging tool. i c

31. In a mining machine, the con'ibination with sectional framework with the sections arranged in series in a straight-line, of a plurality of 'roof jacks distributed on said framework, a pivotal connection between each section and next adjacent section of said framework to permit relative swinging movements of said sections into or out of a straight line, disliidging mechanism con- .nected to said ilraniework, and means for operating said dislodging mechanism while said framework is anchored between the iioor and'roof of the mine chamber by means of said roof jacks. f

32. In a mining and loading machine, the combination with mining mechanism, of a receiving conveyor detachably connected thereto, a delivery conveyor, and an arm detachably connected to saidmining mechanism and .having a ring at its'opposite end for location at the place where said receiving conveyer delivers material te said delivery Vconveyer, said mining mechanism and receiving conveyor and said arm and said delivery conveyer being transportable as separate units. v

33. In a mining machine, the combination with supporting framework, of a plurality of roof jacks distributed en said framework in spaced-apart relation for anchoring` the latter to form an abutment, coal-splitting` mechanism connected to said framework and` 34:. In a mining and loading machine, the.

combination with a supportingV frame, of coal-'splitting mechanism mounted thereon',

a traveling conveyervpivoted to said frame for up and, down tilting movementson an axis extendingtransversely ofthe path of travel of themachine, and a scoop connected to said conveyor to move bodilytherewith and travel over the floor whenrthe machine is moved forward and thereby direct matelrialfrom the floor onto said conveyor.

35. In a mining andloading machine, the combination with coal-splitting mechanism rcomprising a pointed wedging tool adapted to enter the solid coal in its native bed and tear the same'from the unmined mass, of means for operating said coal-splitting mechanism by exerting continuous forward pressure along rectilinear lines on said tool while moving the same continuously forward in contact with the coal to be dislodged, a conveyor mounted in position for receiving dislodgedcoal, and' means for gath ering the dislodged coal and. directing it onto said conveyor by movement ofthe inachine over the mine floor. f

36. In a mininginachine, the combination witha supjgiorting frame, of a supplemental frame connect-cd 'thereto .for adjustment laterally relatively te said supporting frame, coal-dislodging mechanism comprising a penetrating wedging tool and mounted on said supplemental frame for adjustment up and down relatively thereto, means for adjusting said wedging tool up or down, and means vfor adjusting the elevation of said supplemental `frame in'its various positions relative to said supporting frame to effect adjustment in, elevation of said wedging tool to enable the latter to dislodge a plural-` ity of layers-of coal from a mine vein between the 'hoor and roof of the mine chamber.

37. In a mining machine, the combination with framework comprising'a plurality of sections flexibly connected. together, of a plurality ofk roof Vjacks distributed on the sections Vof said framework, mining mecha; nism connected to said framework, and means for operating said mining mechanism while said roof jacks are anchored between the floor and roof of the mine chamberto form a rigid abutment. f

38.`In a mining and loading machine,fthe combination with a supporting frame, of mining mechanism. connected thereto, a re ceiving conveyer pivotally connected. to said frame on an axis eXtending transversely thereof, a scoop having a beveled edge adapted to rest on and slide over the mine floor on that side of said conveyor opposite its pivotal connection to'said frame, and means for moving the machine along the floor andr cause said scoop to direct material from the` floor to said conveyer. i

Y 39. In a mining and loading machine, the combination with a supporting frame, of mining mechanism connected thereto, an elongated travelingconveyer connected to said frame to extend transversely of its lon-v gitudinal' length and its c, path of forward travel, and a bevel ledged scoop connected to said conveyer iii-position to direct material from the floor onto said conveyer when the machine is advanced along 4the longitudinal length of said vsupporting frame.

40.` In a. mining machine, the combination with sectional framework, of a plurality of Cil roof jacks distributed on the sections of said framework, pivotal connections between the sections of said framework to permit relative swinging movements of such sections, mining mechanism connected to said framework, and means for operating said mining mechanism while said framework is anchored by said distributed roof jacks.

4l. In a mining machine, the combination with a hydraulic roof jack comprising a hydraulic cylinder having a collar intermediate its ends, of a plunger in said cylinder, and a resilient support engaging said collar for holding said cylinder off the floor when the roof jack is in released position.

42. In coal mining apparatus, the combination with a main frame, of means for anchoring said main frame to hold it stationarya radius frame mounted on and swingable relatively to said main frame on an upright axis, a single penetrating wedging device mounted on the other end of said .radius frame with the space in advance thereof free and unobstructed, means for securing said radius frame in adjusted positions t0 permit said penetrating` wedging device to command a wide area over a plurality of layers of coal at the mine wall, and means for operating said .penetrating wedging device to penetrate the coal in its native bed along lines approximately parallel to the coal face and split and tear the coal from the unmined mass along upright cleavages spaced back from themine Wall.

43. In a mining and loading machine, the combination with a supporting frame, of a single penetrating wedging tool, means for operating said wedging tool by imparting rectilinear movements thereto, means for supporting said wedging tool on said frame for swinging adjustment in elevation and also rectilinear adjustment in elevation, and loading apparatus connected to said frame with its receiving end adjacent the range of operation of said penetrating wedging tools.

44. In a mining machine, the combination with a supporting frame, of coal-splitting mechanism comprising an elongated wedge yadapted to penetrate the coal in its native bed and tear the same asunder to dislodge large blocks from the face of the mine vein, means for mounting said coal-splitting mechanism on said frame in position to operate along the face of a mine vein above the iioor of a mine chamber, and means for arcuately adjusting the coal-splitting mechanism on a horizontal axis extending transversely of said frame to enable said coal-splitting mechanism to dislodge the coal from the entire mine wall area between the iioor and the roofI of the mine chamber.

45. In a mining machine, the combination with a supporting frame, of coal-splitting mechanism comprising a splitting tool adapted to penetrate the native coal in its bed and by wedging action 'split and tear the coal away from the unmined mass in comparatively large pieces, means for adjusting said coal-splitting mechanism arcuately relatively to said frame on a transverse axis extending in a general horizontal .direction to enable said splitting tool to penetrate the coal and dislodge the same from the entire face of the mine vein extending from the floor to various elevations, and non-percussive means for operating said coal-splitting mechanism by steady, continuous forward movements of the splitting tool.

46. In a mining machine, the combination with a supporting frame, of coal-splitting mechanism comprising an elongated wedge adapted to penetrate the coal in its native bed and split the same therefrom in large lumps, means for mounting said coal-splitting mechanism on said supporting frame for arcuate adjustment relatively thereto on a horizontal axis to vary the range of operation of the coal-splitting mechanism from the floor to the roof of the mine chamber in dislodging coa-l from the entire face of the mine vein, and non-percussive means for operating said coal-splitting mechanism by imparting to said elongated wedge a steady, centinuous forward movement for each stroke thereof 47. In a mining machine, the combination with a supporting frame, of coal-splitting mechanism comprising a penetrating wedg-v ing tool adapted to move along the upright face of the mine Wall to split the coal from such upright face in comparatively large lumps, Ameans for operating said coal-splitting mechanism to cause saidwedging tool to penetrate along lines spaced back from the upright faceto secureupright lines of cleavage and tiereby dislodge layers of coal from the face, means for mounting said coal-splitting mechanism for arcuate adliustment both vertically and horizontally relatively to said supporting frame yto enable said penetrating wedging tool to command the entire area of the mine wall between the floor and roof of the mine chamber within the range of operation of the rthreaded through said supplemental frame and resting on to abut against said supporting frame for adjusting the elevationy of the mining tool irrespective of its angular position relative to said supporting frame, means for holding said mining tool in adjusted supporting frame, and means for operating said mining tool by moving the same along a mine wall approximately parallel thereto to dislodge coal from the upright face of the mine vein from the iioor to the roof of the mine chamber in accordance with the adjustments in elevation of said mining tool by said adjusting means.

49. In a mining machine, the combination with a supporting frame, of a supplemental frame pivot-ally mounted thereon for adjustment laterally on an upright axis, coalsplitting mechanism carried by said supplemental frame to move bodily therewith and comprising y a penetrating wedging tool adapted to tear the coal from the face of the mine vein in large lumps, means for operating said coal-splitting mechanism to secure penetrating movement of said wedging tool approximately parallel to the coal face while spaced back from such coal face, and means comprising a rod screw-tlncadcd to said supplementalframe and abutting against said supporting frame at its lower end for sliding movement over said supporting fra-me, to adjust the elevation of said supplemental frame in its various angular positions to enable said coal-splitting mechanism to command an increased area of dislodgment of the coa-l from the face of the vein from the floor to the roof of the mine chamber.

50. In a mining machine, the combination with a supporting frame, of a supplemental frame pivotally connected thereto for adjustment late-rally on an upright axis, coal dislodging mechanism comprising a penetrating wedging tool and mounted on said supplemental frame for adjustment angularly up and down relatively thereto on a transverse axis extending in a general horizontal direction, worm gearing for adjusting the wedging tool up or down on said transverse axis, and elevating mechanism for said supplemental frame having a sliding engagement with said supporting frame foradjusting the elevation of said supplement-al frame in its various angular positions relative to said supporting frame to effect adjustment in elevation of said wedging tool to enable the latter to dislodge a plurality of layers of coal from a mine vein between the floor and roof ofthe mine chamber.

5l. In a mining machine, the combination with an elongated wedging tool adapted to penetrate the upright face of a mine vein and by wedging act-ion strip the coal therefrom, of non-percussive means for reciprocating said wedging tool including a'continuous forward penetrating movement parallel to the coal face and spaced back therefrom, and mechanism for adjusting the position of said wedging tool areuately to enable such tool to strip the coal from the face of the mine wall at various elevations between the floor and roof of the mine chamber.

52. In a mining machine, the combination with a supporting frame, of means for holding said frame stationary, coal-splitting mechanism mounted on said i'ra me and comprising a single penetrating elongated wer ging tool, locking worm gearing for adjusting said tool by swinging the same up or down on a horizontal axis to enable said tool to command a wide area of the face of the mine vein, means for operating said coalsplitting mechanism by exerting a continuous forward pressureon said tool to cause it to penetrate the mine vein back from the face thereof to split material therefrom in comparatively large pieces, and means for controlling said operating means.

l53. In a mining machine, the combination with a portable frame, of a hydraulic roof jack comprising a cylinder extending loosely through said frame and adapted to have its lower end engage the floor, the upper end of the plunger being adapted to engage the roof, a collar secured to said cylinder intermediate its ends and in a position spaced above said frame, and a spring between said frame and said collar for automatically holding the cylinder off the floor when the roof jack is in released position.

54. In a mining machine, the combination with a supporting frame, of dislodging mechanism lcomprising a single pointed penetrating wedging tool adapted to penetrate the solid face of the coal in its native bed and split and tear the same from the unmined mass in large pieces with a minimum production of fine particles of coal, means for operating said dislodging mechanism to give said wedging tool a powerful pushing action rectilinearly approximately parallel to the coal face to dislodge the coal from such face, and a pivotal support for said operating means for adjustment in elevation of said penetrating wedging tool.

55. In a mining and loading machine, the combination Vwith a supporting frame, of coal-splitting mechanism mounted on said frame for movement along a mine wall in rectilinear lines substantially parallel to the coal face and spaced back therefrom, said coal-splitting mechanism comprising a penetrating wedging tool, non-percussive mechanism for operating said coal-splitting mechanism by actuating said penetrating wedging tool with a continuous forward penetrating movement, a traveling conveyor connected to said frame near the range of operation of said coal-splitting mechanism, means for gathering the dislodged material and directing it onto said conveyer, and means for simultaneously operating said coal-splitting mechanism and said conveyer.

56. In coal mining apparatus, the combination with a supporting frame, ot a supplemental trame mounted thereon forA swinging movement relatively thereto on an upright aXis, a tertiary 'trame mounted on said supplemental frame i'or swinging movement relatively thereto on a horizontal axis, a single penetrating wedging dislodging tool adapted to penetrate the coal in its native bed and by wedging action split andvtear the coal away from the unmined mass in large pieces, non-percussive means on said tertiary frame for operating said dislodging tool b thrusting the same along rectilinear lines in its adjusted position on said upright axis and on said horizontal axis, and means for securing the said tertiary frame in adjusted positions relative to said upright and hori- Zontal axes to enable said dislodging tool to effect operations to dislodge coal from an upright mine wall over an area extending from the floor to the roof of the mine chamber and at various distances from the eX- posed face of the mine vein.

57. In a mining machine, the combination with a supporting frame, of a single piercing wedging device mounted thereon 'for adjusted operating positions on a horizontal axis to command an area of the mine wall extending from the wall to the root thereof, worm gearing for adjusting the position ot said wedging device and locking it in adjusted position, and non-percussive means for operating said single piercing device at its adjusted elevation to split large portions of the material from lthe mine wall above and below the points of penetration by continuous forward strokes.

58. In a mining machine, the combination with a support-ing frame, of coal-splitting mechanism comprising a pointed. wedge adapted to penetrate coal in its native bed and tear the same way from the unmined mass in comparatively large lumps in front of the wedge and above and below the same, means for mounting said coal-splitting mechanism on said fra-me for arcuate adjustment in elevation oi said wedge for operation between the floor and roof to dislodge coal from the entire face of the vein, means foi-'holding the coal-splitting mechanism in its adjusted position, and non-percussive means 'ior operating said coal-splitting mechanism by imparting continuous long rectinlinear strokes to said wedge.

59. In a mining machine, the combination with a. main frame, of a supplemental frame mounted thereon for vertical adjustment relatively thereto and also swinging adjustment relatively thereto on an upright axis, a single piercing` wedging device mounted on said supplemental frame for up and down swinging adjustments to command an area along an upright mine wall extending be-Y tween the iioor and roof the mine chamber,

locking worm gearing for effecting the up and down swinging adjustments of said wedging device, a rod screw threaded through said supplemental irame and abut-- ting at its lower end against the main trame tor sliding contact with the latter, said rod being adapted to adjust the elevation ot the supplemetnal irame together with the wedging device thereon, and means for operating said piercing' wedging device in its .adjusted position relative tosaid main traine to penetrate the mine wall substantially baci; of the face thereotl to rip oi' comparatively large pieces ot material from the unmined mass along` a plurality' of layers without cha-ngingV the position of said main frame.

G0. In a system of mining coal, the method which consists in applying at a single point a penetrating wedging action midway between the floor and the root ol the mine chamber at the base oit a mine vein to secure wodging actions on the solid ot the mine veii'i in opposite directions above and below such single point of penetrating wedging action and toward the upright face oi the mine wall to produce clcavages in the unmined mass and dislodge 'the coal in large lumps from the middle portion. of the coal face, and repeating such penetrating and wedging action toward the root and toward the floor with each application at a single point ot' penetration.

61. In a system of mining, the method which consists in applying a continuously forward steady digging and wedging action on the mineral in its native bed at a single point of penetration and dislodging such mineral in large lumps and repeating the single point application above andA below the initial point et' application to secure dislodgeinent of mineral in large lumps over an extended area.

62. The method of mining coal from the solid oit a mine vein which consists in the individual continuously forward steady application of' a penetrating and wedging tool at distributed points successively across the mine vein each time at a single point oLt penetration to tear the coal from the unmined mass over an area extending across such mine vein.

G3. The method of mining coal from the solid of a mine vein which consists in applying continuously forwardly a moving force to Ia single coal-splitting tool while held continuously in engagement vwith the coal to eiect a tearing away ot a large portion oi' the coal tace by single point penetration, and repeating` such application of the coal-splitting tool by single point penetrations to eiiiect dislodgement of' the coal .in comparatively large lumps over an area eX- tending across the mine vein.

64. The method of mining coal from the solidoi' a mine vein which consists in ripping away the coal tace by applying a single penetrating and .vedging force at single points successively spaced from the face of the mine vein and distributed over an area extending across the mine vein to dislodge the coal in large lumps from such area b y such single point applications.

G5. rl`he method et mining coal from the solid ot a mine vein which consists in applying a single penetrating and wedging torce to the coal at distributed points successively but each time at a single point ot application, and exerting each timefa continuous i'orward pressure on said tool while baclied by an abutment to rip or tear the coal tace trom the unmined mass over an area extending across the mine vein.

GG. In a mining machine, the combination with a mining tool, ot' means for advancing said tool with a steady forward pressure and retracting said tool in readiness tor another operation, an exterior rod connected to said tool to reciprocate therewith, and an arcuate adjustable device mounted on said advancing means in position to engage said rod to coniine the advance and retraction of said tool along a predetermined path.

(37. In a mining machine, the combination with a hydraulic motor comprising a piston and a cylinder with a single rod connected to the piston, of' a splitting tool connected to the piston rod, a collar at the outer end of said cylinder and movable circumferentially thereon, a rod connect-ed to said splitting teol eXteriorly of the motor and in sliding engagement with said collar to etect arcuate adjustment of said splitting tool when said collar is movable circumterentially on said cylinder, and means for securing said collar in adjusted position.

(i8. In a mining machine, the combination with a mining tool comprising a wedge adapted to pierce coal in its native bed and tear the same from the unmined mass, of a hydraulic motor connected to said wedge for operating the same, a collar mounted on said motor, means for securing said collar in eircumterentially adjusted position on said motor, and a rod connected to said wedge and engaging said collar exteriorly of the motor to confine the wedge to a predetermined path of travel.

G9. In a mining machine, the combination with a fluid pressure motor comprising a cylinder, o'i' a dislodging tool connected to said motor for operation thereby, a guiding device movable arcuately on said cylinder, a rod connected to said dislodging tool and associated with said guiding device, said rod being separate and independent of said Huid pressure motor, and means for securing said guiding device in adjusted position relative to said cylinder.

70. In a. mining machine, the combination wit-h a supporting trame, ot' a coal-splitting n'ieehanism comprising a long-faced wedge adapted to'penetrate thel coal in its native bed and tear the same away from the unniined mass in conipartively large pieces in front of the wedge and above and below the same, means tor mounting said coal-splitting mechanism on said trame for rectilinear adjustment in elevation tor operation between the 'floor and the roof ot' the mine chamber to dislodge coal Jfrom the entire face et the mine vein, means for holding said coal-split ting mechanism at adjusted elevation, and an auxiliary pivotal support for the coal-splitting mechanism tor swinging adjustment of the latter in elevation.

71. In a mining machine, the combination with a support-ing trame, ot' a single pointed penetrating wedging` tool adapted to penetrate the solid tace ot a mine vein and by wedging action split large pieces ot coal from the unminedv mass with a minimum production ot fine particles of coal, a supplemental frame slidable up and down on said supporting trame, a pivotal support on said supplemental frame for said wedging tool, a fluid pressure motor connected toY said tool 'for exerting powerful pressure thereon to push said tool rectilinearly into the coal in its native bed to penetrate and split and tear the same from the unmined mass, means for adjusting the motor together with said tool on said pivotal support to vary the inclination and elevationV of the said tool, and means for adjusting the elevation of said supplemental frame together with said motor andsaid tool on said supporting iframe to adjust the elevation of said motor and said tool.

72. In a mining machine, the combination with a mining tool, ot' a motor having a reciprocating rod connected to said mining tool, an additional rod connected to said miningtool in parallelism with said reciprocating rod but independent ot said motor, and a collar circum'lierentially adjustable relatively to said motor and adapted to engage said additional rod to guide said mining tool along a predetermined path.

This. speciiication signed at New York city in the county of New York and State ot New York this 21st day of May, 1921.

EDMUND C. MORGAN.

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