US1474000A

US1474000A - Olive eugenie

Info

Publication number: US1474000A
Authority: US
Publication date: 1923-11-13
Anticipated expiration: 1940-11-13

Description

AWLG

Nov. 13 19.23.

E., C. MORGAN MINmG MACHIN s sheets-sheet 1 Filed May 22 1915 Il lili l "IM lll ll www@ Nov. 13 1923.

E. C. MORGAN MINING MACHINE J -Filed May 22, 1916 6 Sheets-Sheet 2 Nov. 13 1923.

E. C. MORGAN MINING MACHINE www g'zz/fffzzof/ 1 ,276177111013 allarga www , 1916 6 Sheets-Sheet 5 Filed May 22 E. C. YVIQRGAN MINING MACHINE Filed May 2.2,' 1916 6 Sheets-Sheet 4 1,474,000 E. C. MORGAN MINING MACHINE File'd May 22, 1916 6 Sheets-611ee' 5 s. n H a d 0 O o G ma. O N V W Nm Nw En 9N. mwN a o f "nl o a @E O o o O o o um, Y NW WNN..N\ w wm \mm NNN ,wm NNN l.. N Wm, m,

ParentedNQv. is, 1923. lgi'dtltl UNI-TED STATE PATENT QFFCE.

EDMUND C. MORGAN. OF CHICGG, ILLINOIS; QLIVE EUGENE MORGAN EXECTRIX F SAID EDMUND C. MORGAN, DEGEASED.

NING MACHIEE.

Application le. May 22. 1916. Serial No. 99,015.

T0 @ZZ whom t may concern.'

Be it known that I, Erinnern C. MORGAN. a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Mining'liachines. of which the following is a specification.

to secure the mining machine in position. ylie socket member 22 may be provided with extensions 25. as shown in Fig. l. when the machine is operated in a chamber having a high roof. Pivotallv supported on the pedestals 2l by bolts 26 is a pair of rack segments 27 provided with rack This invention relates to machines for teeth 28 and with supporting arms 29 which mining coal and similar material. and has carry pivot bearings at their outer ends. for its object the provision of a machine of The rack segments 27, as shown in Figs. 3 the class mentioned which shall be of imand 4, extend below their pivotal supports proved construction and more eihcient and 26 and are provided at their lower ends economicalV in operation than machines of with openings through which holte 31 may the same character heretofore known. The pass. The pedestals 2l are provided with invention is exemplified by the combinationy a pluralityT of openings 32 which may be and arrangement,- of parts shown in the acmade to register with the openings in the companying' drawings and described in the lower end of the rack segments. in order to following specification, and it is n'iore parreceive therbolts 3l and to hold the segments ticnlarly point-ed out in the appended claims. in adjusted positions. B v changing the conn the drawings-Fig. l is a side eleva nection of the rack segments vwith the vation of a mining` machine embodying` tinl rions 'opening-s 32. the pivotal supports 3o present invention; Fig. 2 is. a top plan view may be moved verticali;y into different adof the machine shown in 1 Fig. 3 is a jnsted positions. vertical sectional view on line 3 3 of Fig. The framework which ciu-ries the operat- 2; Figi'. el is an elevational view of the ma-V ing` mechanism of the machine. comprises a chine looking` at the side opposite that shown main base plate having` a downwardly exin Fig, l, and showing the machine in a lowtending: reinforcing: tlanae 3G extending ered position; F 5 is a fragmentar;y rear around the periphery thereof. The plate 35 elevational view showinggv the position in is provided with laterally extending pivot 30 which the machine rests on the mine floor. men'ibers 3T. one on ea .h side of the mining and other features; Fig. 6 is a fragimmtar).1 .'nachine in. position to enter the pivotal snphorizontal sectional view on line 6-6 of ports 30 carried hf. the arms Bv this F ig. 3; Fig. 7 is a fragmentary vertical secmechanism. the rear portion of the mining tional view on line 7-7 of Figi. 6; F in. 8 is machine frame is provided with a vertically a fragmentary view showing; a detail of conadjustable pivotal support'.l .lournalled in struction; F in'. 9 is a fragmentary horizon the ribs 36 near the central portion of the tal sectional view on iine 9 9 of Fig. machine. is a shaft 3S proi'ided with pinions F ig. l0 is a vertical sectional view online l0-10 of Fig. 2; Fig. 1 1. is a. fragmentarj.7 Vvertical sectionai view on line ll-ll of Fig. 2; 12 is a fragrnentarjvY vertical sectional'view on line ylf2-l2 of Fig. 9:' Fig. 13 is a sectional elevation of certain brake mechanism; and Fig. 1st' is a plan sectional view on the line lt-l-iof Fit.; 13.

The mining machine const-ittrtin; r the present i vention. is providedwvith a supporting; base plate 2t' having* upstandinp; pedestals 2l at each sid-c thereof. rlhe 1 iedestals 2l are provided at their upper ends with socket members 22 which are arranged to receive threaded anchor hars23 pointed at l their ripper ends and provided with hand thereto b v a clutch 47 having an operating wheels 24- by which thev mavljie forced into handle et-8 (F 2). The shaft is pro cont-act v'with the roof of a mine cham'hei" vided with a gear e9 which meshes with a sition to mesh with the teeth on the rack segments 27. Then the shaft 3S is rotated b v mechanisinto he described. vthe machine will be adjusted about the 'pivots 37 to raise and Ylower the forward or cuttinf,T portion of the machine. The shaft 3S carries a worm liv a shaft mounted in beariinrs and 43 and provided with a Vspur gear fili. The shaft 38 is prevented from rotation under the weight of the miningT machine b v this worm gearing. rlhe gear wheel ist meshes with a pinion e115 (Figs. l and 2) carried on a shaft 46 and arranged to be clutched at opposite ends thereof arranged in powheel meshing' with a worm 4i vcarried erated. the motor pinion 50 secured to the armature shaft ot a motor 51. lVhen the clutch lever 4S is op- 51 will he connected through the gearing described with the worm 41 and the pinons 39 to rotate the pinions in mesh with the rack teeth Q8. and thus adjust the position ot the mining` niachine traine.

' LThemain hase plate B5 constitutes a hed plate .tor a conrever chain havingl a pluralit)T ot horizontal flights 56 which travel over the plate Extendinp;V longjitudinall'j.Y alongT the center ot the plate 35 ie an up- Astanding ridge or guide 577 about which. the

chain travels. an heat Shown in Figa. 2f and 10. The chain is driven hv a Sprocket wheel 58 iournalled in the plate at the rear end thereof. as shown in Fin'. 2l and connected with a. worm wheel 59 meshingr with a worm 60 carried on the Shatt 61. The shaft 61 is provided with a. hevelled pinion 02 meshing.r with a cori'efnwndinrY pinion 61% secured to a traneverae ahatt G4. The shaft (i4 carries a clutch 65 arranged to he operated hv a clutch operating; handle 06 and arranged to connect with a clutch 'tace (i7 carried liv :i Situd eliatt. (35;. The tud Shaft (i8 is connected by pinions 09 and 70 (Fig. 1). vertical eliatt (Si and lievelled ninioneV 72 and 73. with the shaft 46. lVhen t-he handle G6 is operated to connect the Shafts G4 and 60. the conve/ver 55 will he driven through the mechanism descrihed hv means ot the motor 51 operatingv through the shaft 46.

(The run ot the conveyer shown at the right. in Fig. 10, and at the bottom in Fig. 2. is the carryingl run and travels toward the rear ot the machine. To protect the rear run ot the convever` a casting 75 'is nrovided which rents; upon the chain guide 57 at one eide and upon an upatandingr vthingie 7G at the outer edge of the plate The caetingr 75. ehr vn in Fig'. 10. slopes upwardly7 trom the central portion ot the convevcr trough and is provided with an upetanding: wall 77 at the outer edge ot the trough. A corresponding wall T9 projects upwardlv from the edge ot the hase plate 3S on the eide ot the conveyor trough adjacent the carryingy run ot the chain. Bv this arrange ment it will `he Seen that material in the convever trough termed hv the plate andv cestino; will tend to grravitate to the Side of the convever trough in which the carrying run of the chain travels; and the return run ot the chain will he entirel;1 protected troni contact. with material in the convevcr trough. rThe casting 75 ig pro- .vided with supporting lai-achete 79 for snpcontinued at lits bottoni portion to form a hase plate 80 on which the motor 51 is mounted.

The main base plate 35 at the forward end ie extended laterally to form the support for the. cutter head. r'he laterally extended portion of the plate is provided centrallv with a hearing 81 in which an upright. ahatt 82 is jonrnalled for rotation. The iii'fper end ot the shaft. S2 ie journalled in a hearingr 83 carried at the end ot' an arni 84 secured to an upright bracket formed integral with the plate 80'ot the casting 75 (Figs. 1 and .10). A Spacer 86 is arranged between the lower surface ot the plate 80 and. the upper surface of the main hase plate 35 to hold the plate 80 in proper po` eition relative to the operating' parts oit the machine and in spaced relation with the hase plate to permit operation ot the chain between the hase plate and the Supporting plate 80. The shatt S2 is provided with a ratchet lwheel S7 rigidly Secured to the Shatt at a point just helow the hearingr S3. A lever RS is pivotally mounted at 99 on the lower aide ot the arm S4 and carries a detent arranged to cooperate with the teeth 91 et the ratchet wheel 87 (see also Fig. f2). Bv means ot' the detent 90. the ratchet wheel S7 and shaft S2 may he held from rotation in the

hearings

81 and, 83. The lower end oi the shattv 89- has a spur gear 92 secured thereto. the upper surface of the spur gear beingprovided with a circular huh on which is journalled tor ro tation the bottom plate 94 of the cutter head. The plate 94 forms a part ot a skeleton framework or casting on which the operating mechanism for the cutter chain is mounted. The casting' is cylindrical in Shape and is provided with an upright plate 05 at the rear portion thereof and a heavy upright aupiiorting bar or standard 96 at the forward side thereof. shown best in' Figs. 3 and (-3. A cover plate 97 is provided tor the casting secured in place by lag screws 98 (Fig. 2) and provided with covered openingsV 100 through which access inav he had to the enclosed machinery. The cutter head casting is provided at its lower edge ith a peripheral flange 101 (Fig.

VSi).

which Supports for rotation ahont the cutter hea..r a hollow cylindrical drnm102. The drum 102 is.' provided with rack teeth 103 extending around the outer portion thereof. ne Shown in Fins. 1. 2 and 3. liv means ot which the drum inav he rota-ted relative to the cutter head. The outer surface of the crlindrical drum is provided with eorrufrations 1.04 Jfor a purpose to he exiilained. A motor 105 is mounted on the plate 94 and is held in place bv lag4 Screws 100. The armature shaft ot the motor carries a pinion l0? which meehee` with a gear 108 Secured to a Shaft 109 mounted in hearings 110 (Fig. 6)

' the sleeve 125 has a gear wheel 120 secured- L the gear 108, a worin to be clutched to the shaft by a clutch 11% oraclret supported on the upright portion 96 of the inain casting. The shaft 109 carries sprocket wheel 112 over which cutter caain 1.3 passes and'by means of which 'the cutter chain. is driven. The cutter chain, as shown in Fig. 3. is guided over the upper and ends of the upright portion 96 of the cutter head casting. and thence passes into cooperatiif'eV relation with asleep-shaped cutter chain guide 115 which is held rigidly connected with the member 96 by lag screws 116. As shown in 1, when the clutch. is in released position. the cylinder with the eorrugations 1.04 thereon is 'free te rotate by reason of the nature of the gearing connections. Therefore the friction between the drum and the corrugated cylinder tend? to hold the -follower 175 in the position. shown in Fig'. 2. ft-1s as the core has been complet-ely cut, the clutch 100 thrown. in by means ot the lever shown in Fig. 1. and the iiollower tated in a clockwise directie* as viewed. in Figi. 2, together with the corrugated cylinder, independentl.v of the operation oi the cuttingr mechanism because the 'follower ce. he moved through the cutter traine. ever the core material may be uioved alajaiust the corrugated cylinder. the latter will assist by lrictional engagement with the inaterial to nio-ve the latter toward loadingy position. In other words. after the core has been cut and while it is resting on the arcuate platform. it may be moved against the corrugated cylinder in an;7 desired manner.

and when this is done the corrugations will assist the platform in loading` material.

The shaft- 109 carries at the end opposite 111 rllig. (3) arranged operated by Ya lever 119 positioned in depression 120 2) in the cutter head top plate 97. The worm 117 is arranged to drive a, train or" gearingY liest shown in Flog. l'. A bearing plate 12 is secured by bolts 122, 6) to inner side olf the periphery of the cutter head casting and is held in spaced relation with the bottoni plate 0eot the casting. in upright shaft 1.23 is journalledin thev ber-.ringV member 121 and carries at its lower end a pinion 124 hav-` infg upwardly extending sleeve which passes through the base plate 94 and is journalled toriotation therein. The pinion 124 is .free to rotate on the shai''t 12.2% and through and keyed to'rotate with the pinion second upright shaft 127 is jonrnalled in the bearing` member .1.JA and the )ase plate 9&1-, and carries wheels 12d and 120 rigidly secured ther The gear whee 129'ineshes with the 126 and the o 'i wheel 128 meshes with a pinion 1R!) formed integral witl ower a durinl a cutting` operation. i

worin wheel 131 which meshes with the worin 117. By this arrangement, a reduction gear train is proidec. by means of which the pinion 1211 driven from the worin 117 atagreatly reduced speed. The pinion 124e meshes with the gear carried at the lower end oi' the shaft lt will loe apparent that when the clutch 118 connects the shaft 109 with the nie-tor 105, the pinion 1211 will be caused to travel around the periphery ot the gear 02 and thus rotate the cutter head about the shalt 82, provided the shaft is held from rotation by sans oi the detent 90. By this means the cutter hear. is rotated to feed the cutter chain 113 and traine 115 through an arcuate path to sever a crescent-shaped eection oli material indicated. at 132 (Fig. 2) frein the face of a mine vein.

The inward run ot the cutter chain 113. as shown in Fig. 3, extends over the forward end et the conveyer chain 55, so that the cuttings o1 the chain 113 drawn inwardly and discharged into position to be carried bach by the flights 56 over the inain 'traine bed plate. The forward end' et. the

vchain passes around an idler sprocket 135 journalled ou the shat't 82 just below the `gear wheel 92. The sprocket 135 and the front portion ofthe conyeyer chain rest on a plate 1236 (Fito-s. 3 and 0) which is proif'ided with an upstandingcentral portion which acts as a guide 1for the conveyor chain. The plate 135 is secured by lap` screws 138 (Fig. 3) to the main frame bed plate 35. The plate 186 provided at its forward edge with an upstandinff flange 192 which retains the cuttings discharged by the chain' cutter 11.3 on theiront portion or' the plate 136.y and prevents their beingy pushed oil by the centrifugal action of the flights 56.

fis shown in Figs. Il. 9, 11 and 12. the main traine bed plate is provided at its jforward .nd with a circumferential portion 140 which o t downwardly and supports an ad- 4, l

i I .s able extension plate 141. The rear pou o he plate 14-1 is provided with a se- .es ol' openings '1l-L which mesh with the teeth of portions oll material that may be severed The rear edao ot the plate L1 on the side ol' the machine over which the severed coal is transferred. e?S ends bafclvsarrlli' into a recess 14:6 'formed in the 'troni' ed ot' the main l'ranic bed plate 255 as show n in Figs. 9 and 12. A proing carried beneath the casting 75.

jecting ledge 147 overlnings the recess 146 and extends over the rear edge of the plate 1111. The forward vportion oi the ledge 1417 is bevelled. as indicated at 148. so that material will pass treely from the plate 111 onto the plate 35. A series of openings. 149. extend through the downwardly offset portion 140 of the bed plate 35 in the rear of the plate 141. to permit escape ot any particles or"` material that may be imprisoned behind the plate 141. As vill be seen from Figs. 11 and 12. the upper surface of the plate 141 is lower than the upper sui-.tace of the main portion of the bed plate 35. and the plate 136 over which the :forward end ot the chain 55 passes. This provides a depression or l slideway between the front edge of the plate 35 and the periphery of the plate 136. In this slideway a follower or receiving table 150 (Figs. 2. 6 and 9) is arranged to slide. '.Ihereceiving table 150 is arcuate in shape and has its forward end connected hy a hinge 151 to a. rearwardly extending portion 152 ot the lower arm of the cutter frame 115. As the cutter Jrame is moved to sever a section of material 'from the mine wall. the receivingplate 15() is drawn in the rear ot the cutter trame into the lower hert torined thereby. the receiving plate being o." sufficient length to extend troni the rear of the cutter frame to the forward edge oi the plate when the cutter trame has moved to the extreme limit. in a cutting operation. A pivoted stop 1.35 is hinged at 156 and 157 to the upstanding chain guides 137 and 57 respectively. as shown best in Figs. 9 and 11. This stop bridges the space between the front end of the guide 57 and the rear end of the guide 137. and prevents coal from be- The pivoted stop is arranged to swing upwardly into the recess between the two runs of the chain 55. and to permit the passage of the receiving table 150 beneath the chain when, the table is forced lnickwardly by the return movement of' the cutter traine. The rear edge of the table 150 is bevelled at 158 so that it will pass easily beneath the edge ot the pivoted stop 155, automatically torcing the stop upwardly ont ot' its way.

Connected with the rear edge ot' the upright arm of the cutter frame 115. as shown in Figs. 2, 6 and 8, by means of a hinge connection 159. is a belt or apron 1.60 arranged to be drawn into the kerf formed by the upright arm of the cutter frame when the cutter head is rotated during a severing operation. The rear end of the apron 160 is secured to a drinn 161 carried by brackets 162f secured to the wall 78 (Fig. et) ot the main iframe in the rear ot the cutter head. The drum 161 provided with a hevclled gear 163 at its lower end which meshes with a pinion 161i carried on :i sha't't 165. The shaft 165 is provided with a clutch 166 (see provided with a triction brake 173 (Fig.

3) arranged to be operated by a lever 171A (Fig. 1) hy means ot which the drum 161 may he held trom rotation.

It is noted thatl the lever 174C .is connected through the lower transverse shaft 193 to a brake lever 19st, as shown in Figs. 13 and 141.. The rock shaft 193 journaled in the bracket 195 is keyed not only to the operating .lever 174 but also to the brake lever 191. shown in Fig. 13. a brake band 196 extends around the pulley 173 and is connected at its ends to the ends ot the lever V191 or to the outer end of the lever 191 at one end and to a projecting portion ot the shaft 19? at its other end. as shown in Fig. 1-1. Therefore. when the lever 1711 is moved to one side or the other, the brake band 196 will 'be brought into iirni trictional engagement with the pulley 173 which is feyed to the 'transverse shaitt 1i the drinn is thus restraineil during the forward movement of the cutter head. it will be apparent that the apron 16() will be drawn taut, thus causing a portion ot the crescentshaped section of material 132 to he broken from its connection with the mine wall. 1n this way the material may be broken up it' desired during the cutting operation.

To assist in forcing' the coal from the position it occupies when disconnected from the mine vein. a follower 175 is secured to the outer portion of' the hollow drum 102. as shown in Figs. 1 and 2, and may be rotated with the drum 102 to torce the material from the severed position. The rotation of the drum 102 and the follower 175 is acco1necsl plished by means ot' the teeth 103 which mesh with a pinion 176 carried on an upright shaft 177. The shatt 177 is provided with a gear 17 8 meshing `with a pinion 179 carried on the shaft 46 which is driven by the motor 51, shown in Fig. 2. The gear 178 may he secured for rotation with the shaft 177 by a clutch 180 having` (Fig. 1) an operating handle 181. ln this way, the drinn 102 and the follower 175'may be driven by the motor 51 to rotate about th cutter head.

For adjusting the position oit the machine in the mine chamber, the main base plate 20 has a motor 185 (Fig. 3) mounted thereon which connected by worm gearing to a drum 186 on which a pair of cables 187 y Ul ceY

and 188 are wound. The cahles 187 and. 18S pass over pullejs 189 at opposite edges 0i? the machine trame, and are secured at their ends to anchors 190 which may he located in proper position in the mine chamber to accomplish desired movements otthe inachine trame. Y

Durinpv operation the hase plate rests on the floor of the mine chamber, 'as shown in Fig. 5. Because of the nature oi' the cut made hy the loop cutter, the floor of the chamber willhe lower its center than it is at the sides, hence the central portion o't' the trame will 'he spacedV some distano. ij'rom the iioor ot' the mine chamber. vit the outer edges ot the iframe the ridges formed by the series ot' cuts will he somewhat hrohen down, as indicated at 191 in Fig. 5, hy the weight ot' the machine. When aout is about to he made, the machin-e will he moved into position with the forward end l of the main hase plate adjacent the surface formed hy the last ,preceding cut. lr" .al thich vein is to he operated, the pivotal support- 37 will be adjusted into an elevated position, so that the lcutter head maybe swunpr to an extreme upper position, as indicated in Fig'. 1. lt a comparatively thin vein, lilre that shown in full lines in vr"ig: 3, is to loe worhed, the pivotal support- 37 will he adjusted to ay lower position. ln mahing these adjustments jachs may be used to change the position ot the machine trame as found necessary, or the adjust-ment may he made hy the use ot' the machines own motor. rl`his would he accomplished hy causing; the cutter head to rest upon the supporting` surface, as shown in Fig. l.

will hen this is done, Ythe holt 31 may he re- A moved andthe motor then operated to roupon the direction of rotation ot the motor and also slii'litinrr the lower end of the rack segment 27 relative to the openings 32. By this operation any desired djustnient ot the pivot 3T may he accomplished. e'tore a cut is started, the extension plate 141 is moved forwardly into contact with the mine wall. 'lhe uiper cnt is preferably made first and in starting' this cnt the cutter 'frame 115 will he placed in its extreme retracted position, that is rotated as far as possible in a clockwise direction, as viewed in Fig'. Q. ln this position the end of the receiving table 150 will extend beneath the overhangingi plate 8O 1) as tar as necessary to permit the cutter -trame to reach its starting' position. The apron 160 will he wound upon the drum 161 and thev follower 175 will occupy the position shown in Fig. 2. Buring` the forward movement of the cutter frame, Vthe drum 1G1'will he permitted to rotate'freely so that the apron 160 may be drawn into the heri1 formed hy the cutter chain. llfiien a cut has been completed, the detent 90 will he Ymoved out of contact with the ratchet ST and A.he entire cutter head will then he tree to move. The return movement is accomplished hy rotating the drum 161 to exert tension on the apron 160.'

it the saine time the follower 175 is driven througijh the pinion 176 and the associated gearing, and in this way thetahle 150, the apron 160 and the follower 1'1" 5 will all cooperate to force the section of severed niatorial hachwar ily into position to he transferred h v the conveyor 'flights 56 Vwhich are simultaneously driven to discharge the material at the rear end ot' the machine. A suitable car or other transporting device, receives the material and trans'ters it to the mouth ot the mine.

l claiinz l. A minino' and loadingr machine comprising' a supporting frame, means mounted thereon Jfor cutting a lil-shaped herl1 in a i ine wall in a general horizontal direction, 3rafneworh adjustable to an elevated posito supp rt said cutting means for cutin the hert at the root' in the plane of the root of the mine chamber, conveyor mechanism in position for receiving the material as -'t is dislodged by said cutting means. and means for operatinG said conveyer mechanism to eilect the transfer ot the dislodged mater-'iai rearwardly toward loading` position.

2. lna miningy mach-ine, means 1for tormingi' a hert in o. mine vein, platform movahle into a portion of said hert 'iior receiving material as it is severed trom its nat've -oositmn. and an apron arranged to he moved into another portion of said hert.

3. ln a mining,Y machine, means tor severinn' a section oit material lrom a mine vein, a receiving` platform'attached to said severing` means ani movable therewith, and an apron secured to said severinrf'means and movahl'e into the hert ,termed thereby.

2l. ln a mining' machine, a loop cutter, means 'for moving said cutter to sever a section of material trom a mine vein, a receiving' plattorm secured to said Cutter and movable therewith into -position beneath the severed material, and an apron secured to said cutter and movable with said Acutter into the heri formed therehv.

ln a mining` machine, av loop cutter,

for moving said cutter to sever a Ill 9 all S section oi' material from a mine vein, a receiving` nlattorm for the severed material secured to the horizontal portion of said cutter, an apron secured to the upright portion oit said cutter andrmovahle into the her-t tormed thereby.

6. ln a. miningl machine, a. loop cutter, means tor rotating` said cutter to sever a section of material from a mine vein, an arcuate receivingr platform secured to said cutter and movable therewith into position beneath the material severed by said cutter, and a flexible apron secured to said cutter and movable into the kert' formed thereby.

7..' In a mining machine` a loop cutter, a receiving platorm secured to said cutter and movable into position beneath the material severed by said cutter, an apron secured to saidcutter and movable into the lac-rt tornicd thereby. and meansV for exertin;Y tension on said apron to remove the material severed by said cutter trom its native position.

S, In a mining machine. a loop cutter, a

receiving' plattform secured to said cutter,

an apron secured to said cutter, and means 'or e'iurrtiimv tension on said apron to move the material severed by said cutter Jfrom the position it occupies when severed.

Y 9. In a mining' machine, the combination with lwVt-cuttinn` mechanism ttor cutting an upright kerl" and a hert extending in a general horizontal direction, ot means for oprrating said lcerlcutting mechanism, means movable into the horizontal kert tor receivinlgi' the cut material, separate means movable along' the upright kert, and mechanism tor moving' said separate means relatively to said receivinoA means to break the cut material while conveyin,g r it to said receiving means.

l0. In a mining machine` a severing device having' means lor forming` a hert havingr a substantially horizontal portion and an upright portion. a receiving' platform secured to said severing device and movable therewith into the horizontal portion of said hert'. and flexible means secured to said cutter for movinr'said cutter and receiving table to transfer the material severed by said cutter from its native position.

ll. InV a mining machine, a severing device arranged to form a kc t having a sabstantiallv horizontal portion and an uprip'ht portion, a receiving table secured to said seveiino' device and movable therewith into the horizontal por-tion ot' said kerl. a 'flexible apron secured to said severing device and .movable therewith into the upright portion ot said kerl?. and means tor exerting tension on said apron to ivitlnilraiv said sevcrine; device and receiving' platform trom thc position into which it is moved While severing material -from a mine vein.

In a mining machine, a loop cutter, means 'for rotating' said cutter about an up right axis `to sever a section ot material from a. mine vein, a receiving 'platform secured to said cutter and movable therewith into position beneath the material severed thereby. a flexible apron secured to said cutter and movable therewith into a position adiacei'it the upright side of the material severed by said cutter, and means for exerting tension on said apron to move said plat'torm with the severed material resting thereon to t'ansfer the material so severed away tron'i its native position.

13. A miningr and loadingr mach-ine comprising mechanism li'or dislodging' a section of material trom a mine vein, means lor operating' said dislodging mechanism, a Vdevice adjacent `said dislodginp; mechanism and having an uprightro'ughened surface, and means cooperatingI with said u right roughened suritace bv moving the cislodged material against. the same to assist in removing' the dislodged material from the position which it assumes after being dislodged.

14. In a mining' machine, the combination with a cutter head, otl an abutment carried by said cutter head and having a roughened outer sui-tace, means mounted upon said cutter head tor severing a section ot material 'from a mine vein. and means-for moving said almtment while in contact with said severed material to move the latter away from. its native position.

l5. In a mining machine, the combination with a. supportingr frame, of a device having.r a roughened surface and mounted on said trame, means for dislodging material from a mine Wall, and mechanism for forcingf the enclose the severed material between one surface thereof and said plate to assist in moving said material trom its native position.

157. In a mining and loading' machine, the combination with a device ior severing a section otmaterial from a mine vein, ot' means tor operating said device, movable mechanism opposite three sides ot the cut material While still occupyimer its original position integral with the mine wall, and means tor operating` said movable n'iechanism to withdranr the cut material 'trom the mine wall.

18. .In a miningmachine, a cutter-head having a cutter arranged to sever a section of' material from the tace o't' a mine vein, 'a plate having a rougliened surface, mechanism tor holding' the material severed by said cutter against said surface, and means tor moving said plate'io transfer the severed material trom its native position.

19. In a mining' machine, a cutter-head, a cutter carried by said cutter-head and arranged to sever a section of material from a mine vein, a receiving plate, means for movingF said receiving plate beneath the severed material while the material. remains in its native position, a movable friction plate arranged to contact with the material, andV mechanism for moving said friction plate and receivinf r plate in unison with one another to transfer the material from its native position,

20. In a mining machine, a cutter, means for moving said cutter to sever a section of material from amine vein, a receiving plate for the severed material, means for moving said receiving plate beneath said material while the material is in its native position, a friction plate arranged to engage the eX- posed surface f the severed material, an apron movable into the'lrerf formed by said cutter and arranged to hold the material on said receiving plate in contact with said friction plate, and means for moving` said apron, receiving plate and friction plate to transfer the severed material away from its native position.

Y2l. In a mining machine, a loop cutter, means for moving said cutter to sever a section of material from a mine vein, a receiving plate secured to said cutter and movable therewith beneath the material severed by said cutter while the material remains in its native position, an apron secured to said cutter and movable therewith intothe kerf formed by said cutter at one side of the material being severed, a friction plate arranged to engage the exposed surface of the severed material, and means for moving said receiving plate, apron and friction plate to transfer the severedY material away from its native position.

22. In a mining` machine, a cutter-head, a cutter carried by said cutter-head andarranged to sever a section of material from a mine vein, a plate carried by said cutterhead and having` a roughened surface, an apron, and means for exerting tension on said apron to force the material severed by 't said cutter into contact with said roughened surface and to move said material while thus held away from the position it occupied when severed.

23. In a mining` machine, a cutter, means for moving said cutter to sever a sect-ion of material from a mine vein, a plate having a roughened surface, a receiving plate for the material severed by said cutter, means for moving the receiving plate beneath the severed material while the material remains in its native position`l an apron, means for moving said apron into position to enclose the material severed by said cutter between said apron and said roughened plate, and means for exerting tension on said apron to hold thesevered material into contact with said roughened plate and to move said material while thus held away from its native position.

24. In a mining machine, the combination with cutting mechanism comprising a cutter head, of means for operating said cutting mechanism, projections mounted on said cutter head to form a roughened outer surface, and means for moving` out material against said roughened surface while returning said cutting mechanism to initial position to effect the removal of the cut material from the mine wall and the restoration of said cutting mechanism to initial position.

25. A mining machine comprising cutting mechanism having a cutter head, and a corrugated device movably mountedl on said cutter head in position to be engaged by cut material and move relatively to said cutter head to Ouard the latter. 23

26. A mining machineV comprising cutting mechanism having a cutter head, and a drum movably mounted on said cutter head and having an outer corrugated surface adapted to be engaged by cut material when removed from the mine wall and more with said out material relatively to said cutter head to guard the latter.

27. In a mining machine, the combination with cutting mechanism comprising a cutter head, of a cylinder having a roughened outer surface and niovably mounted on said cutter head, and a contact member carried by said cylinder and movable therewith to transfer material cut by said cutting mechanism.

28. In a miningmachine, the combination with cutting mechanism comprising a cutter head, of a cylinder' movably mounted on said cutter head and having a roughened outer surface, a contact member carried by said cylinder and project-ing outwardly therefrom, and means for rotating said cylinder together with said contact member to transfer ont material away from its native position.

29. In a mining machine, the combination with mechanism for dislodging a section of material from a mine wall, of a receiver for the dislodged material, means for moving such receiver into position beneath said material, a contact member in position to engage an upright surface of a mass of dislodged material, and means for moving said contact member relatively to said receiver for slidingthe dislodged material over said receiver away from the position it occupied when dislodged. i

' 30. In a mining machine,the combination with a supporting frame, of core-cutting mechanism comprising a cutter-frame, and a device additional to the cutter-frame and extending horizontally back from the corecutting mechanism to form a platform below the core tending to support the latter.

3i. In a mining machine, a loop chain core cutter, means for operating said cutter to sever a section of material from a mine vein, a receiver, means for moving said receiver inti') the Vlierf formed by said cutter and beneath the material severed thereby, a follower arranged to Contact with the material severed by said cut-ter, and means for moving said follower and receiver together to transfer the se\.fered material away from its native position.

32. In a mining machine, the combination with lerf-cutting mechanism for cutting spaced-apart kerfs and a communicating lzerfback of a core of material in a mine wall, of means for operating such lerf-cutting mechanism to completely sever a core of material from a mine wall, a platform for supporting the core of material intact until after the entire core is completely severed from the mine wall, and means for operating said supporting platform to move back from the mine wall said core of material in its entirety.

33. In a mining machine, the combination `sith cutting mechanism, of means for operating said cutting mechanism to entirely cut out from a mine wall a section of material, a platform following said cutting mechanism to extend under a section of material as it is being cut in position for receiving the cut material from above, and means for operating said receiving` platform to cause the same to carry into loading position the section of material resting freely by gravity thereon.

34. In a mining machine, a cutter arranged to sever a section of material from a mine vein, a receiver movable into position beneath the severed material, an apron movable into the lerf formed by said cutter at one side of the severed material, a follower for forcing the severed material away from its native position, and means for loving said receiver, apron and follower together to transfer the severed material.

35. In a mining machine, a loop cutter arranged to form a kerf having a substantially horizontal portion and an upright portion, a receiver movable into the horizontal portion of said kerf, an apron movable into the upright portion of said lierf, a contact member for forcing the severed material away from its native position, and means for moving said apron, receiver and contact member in unison with one. another.

36. In a mining machine, the combination with mechanism for entirely cutting out a section of material from the wall of a mine, of means extending under the core in position to receive the severed section of material directly from its original position in the mine wall, and apparatus for moving said receiving means horizontally to carry the material thereon horizontally back from the mine wall toward loading position.

37. In a mining'machine, the combination with loop chain core-cutting mechanism, of

a platform approximately in the plane of the lower run of said loop chain core-cutting mechanism in position for receiving the cut material from the mine wall, means for adj ustiiig the height of said core-cutting mechanism and said platform while said platform is maintained approximately in the plane of the lower run of said core-cutting mechanism, means for operating said corecutting mechanism to cut. a plurality of cores across the mine wall one above another at the various heights to which said loop chain core-cutting mechanism is adjusted, and apparatus for moving said platform to cause the same to carry the material received thereby baci: from the mine wall.

38. In a miningmachine, the combination with cutting mechanism, of means for operating said cutting mechanism to dislodge a section of material from a mine vein, a supporting frame for said cutting mechanism, a contact member movable relatively to said supporting frame, means for moving said contact member along the path of movement of said cutting mechanism to force material dislodged thereby away from its native position, a supporting plate movable'beneath the material dislodged, and means for confining the dislodged material at the front and rear sides thereof.

39. In a mining machine, the combination with a supporting frame, of loop chain corecutting mechanism carried thereby swinging movement on an upright axis, a platform carried by said frame approximately in the plane of the lower run of said loop chain core-cutting mechanism in position for receiving material directly from the reine wall as dislodged by such cutting mechanism, said cutting mechanism and said platform being adjustable to various heights to enable said cutting mechanism to out cores one above another, and means for operating said platform to cause the same to carry the dislodged material back from the mine wall.

L10. In a mining machine, a loop cutter, means for rotating said cutter tofsever a section of material from a mine vein, a contact member, means for rotating said contact member to force the material severed by saidL cutter away from its native position, a supporting plate arranged beneath said material during the movement thereof by said contact member, an apron arranged to enclose said material at one side thereof during said movement, and a guard wall arranged to enclose said material at the side thereof opposite said apron during said movement,

fil. A mining machine comprising a supporting frame, loop chain core-cutting mechanism for entirely cutting out from a mine wall adjacent said frame a crescentshaped core of material, means for operatfor `ing said loop chain core-cutting mechanism,

a platform connected to said frame for receiving all of said core direct-ly from its cut position in the mine Wall, and means for 5 moving said platform together with the core thereon back from the mine Wall.

42. In a mining machine, means for severing a section of materia from its native bed, a rigid plate arranged to contact with 10 one surface of the material so severed, a

flexible member Varranged 'to contact with another surface thereof, a plate for supportingl said material, means for moving said supporting plate and iiexible member in unison With one another to transfer said material. from its'native position, and a folloiver movable in the rear of said material during said transfer. 43. In a mining machine, a circular cutterhead, a loop cutter carried by said cutter- .head and extending` outwardly therefrom, a guard plate connected to said cutter-head and having aroughened external surface, flexible apron carried by said cutter at the outer portion thereof and movable into the lrerf formed thereby, and means for exerting tension on said apron to cause said apron to squeeze the material severed by said cutter into Contact with said roughened surface.

sie. ln a mining machine, a cutter-head, a guard plateconnected to said cutter-head and having a roughened outer surface, a loop cutter carried by said cutter-head and projecting outwardly therefrom, a flexible apron secured to said cutter at the outer 'portion thereof and movable into the .korf formed thereby, a receiving plate for the material severed by said cutter aranged to be moved into the korf formed by said cutter beneath said material, and means for exertingtension on said apron to squeeze the material severed by said .cutter` and supported' by said receiving plate into contact with said roughened surface, i

15in a mining machine, a cutter-head having a roughened outer surface, a loop cutter carried by said cutter-head and project-ing outwardly therefrom, an apron, means ,for movingr said apron .into the kerf formed by the outer portion of said cutter, a receiving plate, means for moving said receiving pla te into the korf formed by said cutter beneath the material severed thereby, means for exerting` tension on said apron to squeeze the material severed by said critter and supported by said receiving plate into Contact with said roughened surface, and means for moving said receiving plate, apron and cutter-head in unison With one another to transfer thematerial held thereby away from its native position.

e6. ln a mining machine, a cutter-head having a curved roughened outer surface, a loop cutter carried by said euttenhead and projecting outwardly tlerefrom, a dexible apron, means for moving said apron into the lie-rf formed by said loop cutter, a receiving plate, means for mo Ting said receiving plate into the hert formed by said cutter beneath the material severed thereby, means for exerting tension on said apron to squeeze the material on said receiving plate into contact with the surface of said cutter-head and to rotate said cutter-head and receiving plate in unison with said apron to transfer the material severed thereby away from its native position, and a follower arranged to Contact with said material in the rear thereof during said movement to assist in the transfer of said material. l

4:7, The combination with a mining machine comprising a movable frame, of a supporting frame adapted to occupy a stationary position during the opera-tion of said mining machine, a supplemental frame pivotally connected to the rear end of said movable frame and also pivotally connected to said supporting `frame for' adjustment relatively thereto, means for holding said supplemental frame in adjusted position relative to said supporting frame, and means intermediate the ends of said movable frame and co-acting With said supplemental trame for adjusting the position of said movable frame in an arc on a radiusl approximately equal to the length of said movable frame.

e8. rllhe eoinbination -with a mining machine comprising a. movable frame, of a supporting frame adapted to occupy a stationary positionA in a mine chamber during the operation of said mining` machine, a supplemental frame pivotally connected to said supporting frame for adjustment relatively thereto and also pivot-ally connected to the rear portion of said movable frame of said mining machine, said supplemental frame .being` adjustable relatively to said suporting frame to var)Y the elevation of the pivotal. connection between said supplemental frame and the rear portion of said movable frame. and means for holding said supplemental frame in adjustedfposition on said supporting frame.

a9. ln a. mining` machine, the combination with a supporting base, of an arm pivotally carried by said hase .and extending` rear- .vardly therefrom, means for holdiiia said arm in adjusted position on saidbase, a mining machine frame, means comprising` a pivotal connection between the rear end of said arm andthe rear end of said mining machine frame for supporting said mining machine frame, and mechanism for adjustvthe position of said mining machine frame on its .pivot-al connection -to said arm.

. 50. lna mining machine, the combination with f frame` ot cuttir-Ql mechanism mountJ il ed at the forward end of said frame, means 1 pivotally connected to the rear end ot said trame for supporting the latter', mechanisn'i for adjusting the elevation ot said pivotal support, and means associated with said adjusting mechanism for tilting said cuttingl mechanism up and down on a horizontal axis at said pivotal support to secure adjustment in elevation of said cutting mechanism along an arc having a radius approximately equal to the length of said frame, said adjusting mechanism and tilting means assisting said pivotal support in supporting said frameand said cutting mechanism at adjusted elevation during the operation ot said cutting mechanism.

51. In a mining machine, the combination with a supporting base, ot a pair ot' rearwardly extending spact-id-apart arms pivotally supported on said base, means for holding said arms in adjusted positions on said base, a mining machine frame pivotally connected to said arms, and means for adjusting the position oi said mining machine trame about its pivotal connection to said arms. Y

In a mining machine, the combination with a supporting frame, ot a supplemental trame mounted on said supporting trame tor adjustment relatively7 thereto and comprising an arcuate rack and an arm rigid therewith, a mining machine frame pivotally connected at its rear end to the rear end of said arm, means for positively holding said supplemental yframe in adjusted position relatively to said supporting trame by holding said supplemental frame rigidly connected to said supporting trame against movement relativel)7 thereto in any direction, and means comprising ay gear carried by said mining machine frame in position to mesh with said arcuate racl: to adjust said mining machine trame about its pivotal connection with said arm to secure adjustment in eleva,- tion of the forward end of said mining machine on a radius approximately equal to the length oi the mining machine trame.

53. In. a mining machine, the combination with a supporting frame, of a supplemental trame comprising an upright arcuate rack and an arm rigidly secured to said rack and extending rearwardly therefrom, a pivotal connection between said supporting frame and said supplemental frame intermediate the ends of said upright arcuate racli, a mining machine frame pivotally connected at its rear end to the rear end ot said arm, means at the lower end of said upright arcuaterack for holdinf said supplemental frame in adjusted position relative to said supporting frame by rigidly connecting said supplemental tramey to said supporting trame and preventing relative movement in any direction.v and mechanism comprising a gear carried by said mining machine frame in posi.-

mining machine trame about its pivotal connection to said arm on a radius approximately equal to the length of said mining machine trame.

In a mining and loading machine, the combination with a supporting frame, of cutting mechanism mounted thereon, a conveyor mounted on said iframe for transferring material severed by said cutting mechanism, a plate extending over one run of said conveyor and adapted to support an operator, means for operating said cutting mechanism and said conveyor', and mechanism comprising controlling levers within the reach oit said operator for controlling the operation oit said cutting mechanism and ot said conveyor.

55. In a mining and loading machine, the combination with a supporting trame, of cutting mechanism mounted thereon, mea-ns comprising a conveyor for transferring dislodged material toward loading position, said conveyer having its opposite runs in the same horizontal plane, a plate extending over the return run of said conveyer and mechanism within reach of an operator on said plate tor controlling said cutting mechanism and said transferring means.

56. In a mining and loading machine, the combination with a supporting frame, ot mechanism mounted thereon for dislodging material from a mine wall, means for trans- `terring the dislodged material along said trame toward loading position, said transferring means comprising a conveyor, and mechanism associated with said transferring means and inclined toward the operating portion of said conveyor to receive` from said transferring means the dislodged material and direct it onto said operating portion of said conveyer. i

In a mining machine, the combiiiiation with a supportiugtrame, of upright loop chain core-cutting mechanism mounted thereon for arcuate. feeding movement relatively thereto on an upright axis, means for operating said core-cutting mechanism including swinging feeding movement thereot on. such upright axis, means on said iframe adjacent said core-cutting mechanism in position. to receive cuttings-3 therefrom, a

conveyor ior transferring said cuttings toward loading position, an extension for said frame to close the gap between saidV frame and the. face of the mine Wall to assure. the transfer ol said cuttings from the, mine wall to said conveyer, and mechanism connected to such extension inspaced-apart sitions to secure equalized rectilinear vforward and rearward movement of such extension relatively to, said frame.

58. combination with av supporting frame, of core-cutting mechanism mounted thereon, a @earner .mounted en Said fraaie. sa ,Xter- In a miningand loading machine, the.

sion for said frame to close the gap between said frame and the base, of the mine wall to assure the passage of cuttings from said core-cutting mechanism to said conveyer,

and `means comprising spaced-apart rackand pinion mechanism for securing rectilinear forward and rearward movement of said extension relatively to said frame.

59. In a mining machine, the combination with a frame comprising a bed plate, of a extension plate for closing the gap at the mine wall and preventing the escape of such cuttings.

60. In a mining machine, the combination with a frame vcomprising a bed plate, of a chain core-cutter arranged to discharge the cuttings formed thereby onto said hed plate, a conveyor in position on said bed plate to transfer toward loading posit-ions the euttings from the positions where deposited by said core-cutter, apparatus for transfer'- ring the cut core material through said conveyer for transfer by thelatter toward loading position, and a double geared lextension plate to prevent escape of the cuttings at the mine wall.

6l. In a mining machine,.a frame comprising a lateral bed plate, a conveyor having flights movable over the surface of said hed plate, an upright chain core cutter arranged to discharge the cuttings formed thereby onto the forward end of said bed plate, and a rib extending upwardly from said bed plate adjacent the path of movement of said flights and the forward end of` said conveyor to prevent escape of the cuttings formed by said chain out of the path of movement of said flights.

62. In a mining machine, the combination with cutting mechanism comprising a frame, of a plate, a hinged connection bctween said plate and said frame, and means for 'operating said cutting mechanism including feeding movement thereof while moving said plate into position beneath the cut material.

' G3. In a mining machine, loo-p cutter, a plate secured to the lower portion of said cutter and movable into the lierf formed.

thereby, and a. hinge-d connection .between said cutter and said plate.

Get. In a mining machine, a loop cutter, means for rotating said cuter about an upright axis, an arcuate plate secured to the lower portion of said cutter and movable therewith into the lierf formed thereby, and a hinged connection between said cutter and said plate. Y

65. In a mining machine, a cutter-head movable in an arcuate path, a base plate on which said head is mounted, a cutter carried by said head and rotatable on said base plate, an arcuate receiver plate secured to said cutter and movable therewith beneath the material severed thereby, and a hinged connection between said cutter and said receiver plate.

In a mining and loading machine, the combination with a supporting frame, of cutting mechanism mounted thereon, means for operating said cutting machanism including feeding movement thereof relatively to said supporting frame, a movable plate for receiving material severed by said cutting mechanism, and a deliector movably mounted on said frame to permit movement of said plate relatively to said frame in a direction to transfer material from the mine wall toward loading position and arranged to deflect material from said plate during suc-h movement thereof.

G7. il mining and loading machine coinprising a supporting` frame, means mounted thereon for severing material from a mine wall, a. conveyer for transferring dislodged material toward loading position, a plate for receiving dislodged material from said severing means and transferring it to said conveyor, and means arranged to intercept the movement of material with said plate beyond a predetermined position but permitting the plate to be moved past said 68. A mining and loading machine comprising a supporting frame, means mounted thereon for severing material from a mine vein, a conveyer mounted on said frame in position to transfer material toward loadingposition, means for moving said plate to transfer material thereon to said conveyer, a slideway on said frame for said plate, and a stop arranged to close said slideway against movement of the material beyond a predetermined positionV relative to said conveyer but permitting said plate to move past said predetermined position.

G9. A mining and loading machine comprising a 'supporting frame, a mechanism mounted thereon for dislodging material from a mine wall, a conveyer having an operating run extending toward loa-ding position, a plate for receiving the material from said dislodging mechanism, a slideway onsaid frame in which said plate is arranged to move, and a pivoted stop for closing said slideway adjacent the opera ting run of said conveyer to prevent the material from moving past the operating run of said conveyer but permitting said plate to move beyond said operating'run.

Y70. In a mining machine, the combination with cutting mechanism,y of means for operating said cutting mechanism including arcuate feed thereof on an uprighta-Xis, an arcuate plate movable with said cutting Cil mechanism in position to Vreceive. material severed thereby, means for moving said plate in the reverse direction to carry the material thereon away from the mine wall, and a device arranged to permit such reverse movement of said plate but blocking the movement of material carried thereby beyond a predetermined position.

7l. In a mining machine, the combination with a supporting frame, of a loop chain core-cutter having an unobstructed tore-opening and mounted on said frame for arcuate feeding movement on an upright axis, means for rotating said core-cutter, said rotating means comprising a pair of cooperating gears, one being mounted for rotation on the axis of said core-cutter, and releasable means for holding the concentric gear stationary during the rotation of the other to cause rotation of said core-cutter, said last-named means being releasable to permit rotation of said core-cutter independently of said gears.

72. In a mining machine, a cutter-head, means for rotating said cutter-head comprising a rack, a pinion arranged to mesh with said rack, gearing for driving saidpinion, and means for holding said rack stationary to cause the rotation of said cutter-head, said holding means being releasable to permit rotation of said cutter-head independently of said gearing.

7 3. In a mining machine, a frame, a shaft carried bysaid frame, a cutter-head rotatably mounted on said shaftA` a gear secured to said shaft, gearing carried by said cutterhead arranged to mesh with the gear on said shaft, Vmeans for holding said shaft. stationary, means for driving the gearing on said cutter-head to cause said cutter-head to rotate about said shaft, and means for releasing said holding means to permit rotation of said cutter-head independently of said gearing. Y

7 4, In a mining machine, a frame, a shaft carried by said frame, a cutter-head mounted on said frame and arranged to rotate about said shaft, a'gear secured to said shaft, gearing carried by said cutter-head comprising a worm drive, and meshing with the gear onl said shaft, means for holding said shaft stationary to cause rotation of said cutterhead when the gearing carried thereby is operated, said holding means being releasable to permit rotation of said cutter-head independently of said gearing.

7 5. In a mining and loading marhine, the combination withl a supporting frame, of core-cutting mechanism mounted thereon and having an upper run horizontal in` elevation, means for operating said core-cntting mechanism including arcuate Yfeeding movement thereof relatively to said supporting Yframe, means mounted on said frame in position tolextend under. the core` cut by said,

cutting mechanism to receive a core and move 1t from the mine wall.I and means for adjustably supporting said frame in oleva-ted position with the upper run of said` upper run straight in elevation, of means for operating said loop chain core-cutter including the feed thereof, framework Jfor supporting said core-cutter at various elevations, andmeans for adjustably supporting said framework to cause said core-cutter to cut a kerf at the roof in `continuation of the plane of the roof of the mine chamber.

77. In a mining and loading machine, the combination with a loop chain core-cutter having an upper run straight in elevation, of means for operating said loop chain corecutter including feed thereof arcuately on an upright axis, framework for supporting said core-cutter for operation at various elevations, and means for adjusting the position of said framework to support the corecutter so that its upper run will cut a kerf approximately in the plane of the roof of the mine chamber.

7S. In a mining and loading machine, the combination with a chain cutter, of means for operating said chain. cutter to sever a section of material from a mine vein by forming a kerf in said material, a conveyer, means for supporting said chain cutter in lsuch position as to cause the same to discharge its cuttings into the path of movement of said conveyer, means for moving the material severed by said chain'cutter into position to be transferred by said conveyer toward loading position` and means for controlling the movement of said conveye at the will of the operator. c

79. The combination with a mining inachine, of a main supporting frame, a sup-- plemental frame pivotally connected to said main frame, means for rigidly holding said supplemental frame in adjusted position relative to said main frame, apivotal connection between the rear end of said mining machine and the rear end of said supple mental frame, and means connected between an intermediate part of said mining machine and the forward end of said supplemental. frame for effecting the support of said mining machine at various elevations and at various inclinations.

S0. The combination with a mining machine, of a pair of arms pivoted to the rear portion of said mining machine, one on one side. thereof, and the other on the opposite side` thereof, armain frame for pivotallysupporting said arms on4 a horizontal airis, and mechanism connected between an intermediate portion. 0f. Seid mining machine and Cil said arms for varying the inclination of said mining machine.

8l. The combination with a mining machine, of framework comprising spaced apart arms pivoted to said mining machine on opposite sides thereof, a pair of roof jacks for holding said framework in stationary position while providing a. free and unobstructed space for up and down tilting movement of said mining machine, and mechanism connected between said mining` machine and said arms for tilting said mining machine on its pivotal connections to said arms.

82. The combination with a mining machine, of framework comprising a main frame and a pair of spaced-apart arms pivotally connected to said main frame and eX- tending rearwardly to pivotal connectionsl between said arms and said mining machine on opposite sides of the latter, 'means for rigidly holding said arms to said main frame in adjusted positions, and mechanism connected between the forward portions of said arms and said miningmachine intermediate the ends of the latter to vary the inclination of said mining machine on its pivotal connections with said arms.

The combination with a mining machine, of a. pair of arms connected at their rear ends to the rear end of said mining machine on opposite sidesv thereof, a main frame for pivotally supporting said pair of arms while the latter Yextend rearwardly from said main frame and while said mining machine extends forwardly from the pivotal connection between the rear ends of said arms, and means for rigidly holding said arms in adjusted position on said main frame for holding` the mining machine at various inclinations and the forward portion of said mining machine at various elevations.

S4. The combination with a mining machine, of supporting framework to which said mining machine is pivotally connected, spaced-apart ceiling jacks on opposite sides of said mining machine for holding said framework stationary, and mechanism connected between said mining machine and said framework for varying the inclination of said mining machine on its pivotal connection with said framework and for holding the mining machine rigidly in adjusted postion against movement up or down rela.- tively to said framework during the operation of said mining machine.

S5. The combination with a mining machine, of a main frame, spaced apart roof jacks on opposite sides of said mining machine for holding said main frame stationary, spaced apart arms pivotally connected to said frame and extending rearwardly7 to pivotal connections to the rear end portion of said mining machine, means for holding said arms in adjusted. positions4 on their pivotal connections to said main frame, and

mechanism connected between an intermediate portion of said mining machine and said arms for lifting and lowering the forward portion of said mining machine on its rear pivotal connections to saidarms.

86. ln a mining machine, the combination with core cutting mechanism having an unobstructed core opening therethrough, of means for operating said core cutting mechanism, an upright abutment having an outer friction surface, means for moving core material from the mine wall against said upright friction surface, and mechanism for moving said abutment to continue 'the movement of said core material from the mine wall toward loading position.

87. In a mining machine, the combination with core-cutting mechanism for cutting a core in one operation along a mine wall, of means for operating the same, receiving means, movable with said core-cutting mechanism beneath the core cnt by the latter, a movable friction device engaged bv the core, and apparatus for moving the said friction device and said receiving` means in unison with each other to transfer the cut core from its native position toward loading position.

88. ln a mining machine, the combination with a receiving plate, of means for movingl said receiving plate beneath cut material while the latter retains its native position, an'iovable friction device, and means for moving the said material into Contact with said friction device and moving said plate with the material thereon toward loading position.

S9. In a mining machine, the combination with loop chain core-cutting mechanism having an unobstructed core-opening therethrough, of a receiving device extending rearwardly from the lower run of said core-y cntting mechanism and movable bodily therewith, i sans for adjnstably supporting said loop chain core-cutting mechanism and said receiving device at various elevations, and mechanism for operating said core-.cutting mechanism including lateral feed thereof at various elevations to cnt a plurality of cores one above another.

90. In a mining machine, the combination with a loop chain cutter, of mechanism for operating the same to entirely sever from the mine wall a crescent-shaped section of material, a segmental platform following said loop chain cutter and movable therewith to receive the said crescent-shaped' sec" tion of material, and means for moving said segmental platform to cause the same to carry said section of material back from the mine wall.

91. In a mining machine, the combination with a main frame, of a supplemental frame rotatably mounted on said main frame, cutting mechanism carried by said supplemenllt) tal frame, means for operating said cutting mechanism, a platform carried by said supplemental frame for receiving the material cut from a mine wall by said cutting mechanism, and means for moving said' supplemental frame to cause said platform to carry the cut material back from the mine wall.

92. In a mining machine, the combination with loop chain core-cutting mechanism having an unobstructed' core-opening therethrough, of means for operating said corecuttin'g mechanism including lateral arcuate feeding movement thereof on an upright axis, and a hollow cylindrical drum for enclosing and guarding said operating means.

93. In a mining machine, the combination with cutting mechanism, of means for operating the same, a rotatable cylinder surrounding said operating means, mechanism for holding said cylinder from rotation during the forward feed' of said cutting mechanism, and means for moving cut material against the outer surface of said drum and for rotating said drum while restoring said cuttin mechanism toward initial position.

94. n a mining machine, the combination with a supporting frame, of a supplemental frame mounted thereon, cutting mechanism mounted on said supplemental frame, a cylinder rotatably mountedv on said supplemental frame and having a corrugated outer surface, and means for operating said cutting mechanism including feed of said supplemental frame.

95.v In a mining machine, the combination with a supporting frame, of cutting mechanism mounted on said frame, means for operating said cutting mechanism, an adjustable extension at the forward end of said supporting frame in position to close the gap between the forward end of said supporting frame and the upright mine wall on which said cutting mechanism adapted to operate, and means comprising spacedapart engaging devices between said supporting frame and said extension to move Said extension relatively to said frame to adjust the position of said extension.

96. In a mining machine, the combination with-a main frame, of a supplemental frame rotatably mounted on said main frame, a loop chain cutter, a motor mounted on said supplementalV frame, operating connections between Vsaid motor and said loop chain cutter, a platform mounted on said supplemental frame to follow said loop chain cutter and move therewith to receive the material cut from a mine Wall by said loop chain cutter, and means for moving said platform to cause the same to carry the severed section of material back from the mine wall. Y

97. In a mining machine, the combination with a main frame, of a supplemental frame rotatably mounted on said main frame, a loop chain cutter carried by said supplemental frame, means carried by, said supplemental frame for operating said chain outter to sever a section of material from the mine Wall, a segmental extension of said supplemental frame to form a platform to receive and support the severedV section of material, and means for moving said platform to carry said section of material back from the .mine Wall.

98. In a mining machine, the combination with a supporting frame, of loop chain corecutting mechanism having an unobstructed core-opening therethrough and mounted for lateral movement on. said supporting frame, means for operating said loop chain corecutting mechanism including lateral feed thereof relatively to said supporting frame and across a mine wall to out a core of material in one feeding operation, receiving mechanism following said core-cutting mechanism approximately in the plane ofthe lower run thereof so as to extend under the core of material, and means for operating said receiving mechanism to carry the cut material of said core thereonback from the mine wall toward loading position.

99. In a mining machine, the combination with a frame, vof loop Vchain core-cutting mechanism mounted thereon, means for operating'said loop chain core-cutting mechanism to cut a core in a mine wall in one feeding operation in a general horizontal direction across said mine wall, a platform extending rearwardly from said loop chain core-cutting mechanism and movable bodily therewith in positionfor receiving cut material immediately as dislodged, and mechanism for effecting the transfer of such dislodged 'niaterial toward loading position.

100. In a mining machine, the combination with a supporting frame having a platform with its forward'edge arcuate to approximately fit an arcuate mine wall, of

loop chain core-cutting mechanism mounted on said frame for swinging feeding movement relatively thereto on an upright axis, means for operating said loop chain corecutting mechanism, mechanism for adjusting the elevation of said core-cutting mechanism, an extension plate at the forward end of said platform adjustable to positions to fill the gap between the forward end of said platform and the mine wall at various elevations of said core-cutting mechanism, and means comprising spaced-apart rack and pinion devices between said frame and said extension plate to move the latter rectilinearly and relatively to said frame to adjust the position of said extension late between the forward end of ysaid plat orm and the upright arcuate mine wall.

101. In a mining and-loading machine, the combination With cutting mechanism, of