US1427119A - Edmund c - Google Patents

Description

E. C. MORGAN.

MINING AND LOADING MACHINE. APPLICATION FILED JULY 15.1915. RENEWED OCT. 30,1920.

Patented Aug. 29,

n SHEETS-SHEET "1.

| IIFAI E. C. MORGAN.

NHN'NG AND LOADING MACHINE- APPLICATION FILED lULY 15,1915. RENEWED OCT. 30,1920.

m Q W m %n .1 a Am We m id m R E. c. MORGAN. MINING AND LOADING MACHINE.

A PPLIIIATION FILED JULY 15,1915. RENEWED OCT. 30, I920.

Patented Aug. 29, 1922.

I I SHEETS-SHEET 3.

i n g E.-C. MORGAN.

MINING AND LOADING MACHINE.

APPLICATION FILEDJULY I5, I9I5. RENEWED OCT. 30. I920.

1 ,427, 1 1 9. t t d Aug. 29, 1922,.

l I SHEETS-SHEET 4.

E. C. MORGAN.

MINING AND LOADING MACHINE.

APPLKCATION men JULY 15.1915. RENEWED OCT. 20. I920. IAQZIIQ,

Patented Aug. 29, 1922.

ll SHEETSSHEET 5- E. C. MORGAN.

MINING AND LOADING MACHINE.

APPLICATION FILED JULY I5 I915. RENEWED OCT. 30, I920.

1 42?, 1 1 9 Patented Aug. 29, 1922.

1? SHEETS-SHEET 6.

Ja ZZZ? mild/2d aflgrqmb a t v 5,0. MORGAN. MINING AND LOADING MACHINE. APPLI CATION FILED JULY 15,1915- RENEWED OCT. 30,1920.

Patented Aug. 29, 1922.

II SHEETS-SHED I.

E. C. MORGAN. Mmme AND LOADING MACHINE. APPLICATION FI LED JULY 15,1915. RENEWED OCT- 30,1920.

H SHEETS-SHEET 8.

Patented Aug. 29., 1922.

7/ ZZ/6)ZZ5// I fdmzazmyflz E. C. MURGAN.

MINING AND LOADING MACHINE.

APPLICATION FILED JULY15,1915. RENEWED 001.30.1920.

Patented Aug. 29, 1922.

H SHEETSSHEET 9.

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E. C. MORGAN.

MINING AND LOADING MACHINE.

APPLICATION FILED JULY 15.1915. RENEWED OCT. 30.1920.

Patented Aug. 29, 1922.

I I SHEETS-SHEET I0- III E C. MORGAN.

MINING AND LOADING MACHINE.

APPLICATION FILED JULY 15.1915. RENEWED o'cT. 30.1920.

1 ,427, 11 9 Patented Aug. 29, 1922.

H SHEETS-SHEEI I I.

E N W y fi I 4 5 7052%? ELM EDMUND O. MORGAN; OF NEW YORK, N. Y.

lVIINIIilG AND LOADING MZACHIN Specification-of Letters latent. Pg -t H-Q Q fl g. 29

Application filed. July 15, 1915, Serial N0. 39,986. Renewed October 30, Serial 1\To. 420,821.

ing apparatus whereby inaterial is com pletely severed from a mine wall and then moved back from the mine wall into position for loading. One of the-objects of my invention is to provide improvements on the mining and loading machine disclosed in my 'copending application Ser. No. 864-,21 1, filed Sept. 30, 1914 for an improvement in mining and loading machines, and also has certain features in common with the subjectmatter disclosed in my copending application Ser. No. 8%,727, filed July 3, 1914:, for

an improvement in mining machines.

Other objects of the invention'will appear hereinafter the novel combinations and features being set forth in the appended claims.

Referring to the accompanying drawinge- Fig. 1 is a view in side elevation of a mining machine embodying certain of my and 2 the conveyormechanism being shown in vertical section; I

Fig, 6 is front sectional elevation taken on the line 6-6 of Fig. 1 with certain parts omitted and a guide pulley shown inelevation instead of in section;

7 is a plan view of the extension of the conveyor mechanism from the reaiportion .of the. construction shown in l. and E2;

Fig. 8 is aside elevational view of Fig. 7,

being broken away at the right to indicate the continuation of the broken away portion. at the left of Figs. 1 and 2;

Fig. 9 is a sectional. elevational view or Y t t he construction shownfin Fig. 8 taken on he line 9 9 of Fig. .7 F1g. 10 is a cross-sectional elevation of Fig. 7 on the line 101O thereof look-mg in the direction ofthe arrows, with the rope and its attachment to the conveyer belt nisin for connecting the loop cutter with the conveying belt;

Fig. 12 is an enlarged sectional elevation of spring pressed'devices associated with the conveyor belt shown in Fig. for engaging'the mined material when being moved to loading position;

.ig. 13 is a plan view partly in section of the loop chain cutter mechanism;

Fig. 1a is a side elevation of a portion of the loop chain cutter to show the alternate positions of individual successive cutters;

Fig. 15 is a cross sectional View of the chaincutter and aportion. of the mechanism for holding and guidinothe same;

of the upper right hand portion of the construction shown in Fig. 4

Fig. 1'? is an enlarged front elevation of the upper right hand portion of Fig. at to more clearly show the mechanism for trans- I mitting power to the loop chaiiicutter;

F 18 a plan view of Fig. 17 to show the spur and bevel gearing indicated by the dotted circles in Fig. 17;

l ig. 19 is .a sectional view of Fig. 1'7 on the line 19-19 and looking in the direction of the arrows; and p lfig. 20 is a sectional elevation of Fig 18 on'the line 20--20 and looking in the direction oftl ie airows.-

The operating parts of the mining and loading machine shown in the drawing are mountedupon a frame. 21 which may be of open-workconstruction and rectangular in.

form; as illustrated in Figs. 1 and 3. This main frame of the machine is preferably made of structural steel to facilitate its construction and reduce its weight to a miniminn without detracting from its strength. The lOiver side longitudinal members 22, 22 are rigidly connected together by the crosspieces 23, and 25, as shown in Figs. 2 and 3. Extendingupwardly from each corner of the rectangular base frame thus constructed, are uprights 26,26 and 27 27,

'. 16 is a sideelevational view of a part 1* 1g. 11 is an enlarged plan view of niecha- I as shown in Figs. 1 and 3. The upper ends of these corner uprights are connected by crosspieces 28 and 29 and by the longitudinal members 30, 30, as shown in Figs. 1 and 3. As shown in the drawings, the various longitudinal and cross members of the frame 21 are preferably constructed of angle-beams or structural steel l.-shaped in cross section. This main frame forms avery solid and substantial structure which may be braced and strengthened as desired, as by means of cross members of the loading apparatus hereinafter described, and by means of the crosspiece 31 (Figs. 1 and 3), which also supports a bILLCrCQiJ 32 for the guide pulley 33. It will be evident that the structural frame-work comprising strengthening members L-shaped in cross section, afiords a ready means for efiiciently supporting the various operating parts directly as well as in its entirety.

Pivoted to the upper ends of the forward uprights 27, 27 of the main frame, at 3 1, 3% respectively (Figs. 1 and 3) is a supplemental frame 35 extending entirely across the machine, as shown in Fig. 2. This supplemental frame 35 is provided with two forwardly extending arms one, 36, near the central portion of the supplemental frame, and the other, 37, near one end thereof. The forwardly extending arms 36 and 37 are provided with journal bearings 38 and 39 for the transverse shaft 40, which is also provided with the journal bearings 41 and 42 for supporting the chain cutter frame 13.

It should be noted that while the transverse shaft eO extends into the journal bearing 42, it serves merely as a support for the cutter frame 13, so far as that portion thereof adjacent the journal bearing 12 is concerned. The journal bearing 12 is rigidly connected to the vertical plate a l which is rigidly connected, as indicated at 45, to the upper surface of the chain cutter frame 13. Rigidly connected to the vertical plate 14, is an additional vertical plate 16 grooved on its upper peripheral portion for receiving the rope 56, its lower edges having the contour indicated at d8 in Fig. 1. The segmental plate 16 is'connected rigidly to the vertical plate 44L by the intermediate support 49, so as to space the segmental plate from the plate 14; and provide an intermediate space for the pulley which is pivotally mounted on the vertical plate tt, as by means of the bolt 51, which may be held in adjusted position by the nut 52. Another pulley 53 is mounted on a bolt pivot 5 1- which is held in adjusted position by the nut 55. The pulleys 50 and 53 are preferably mounted in the same plane and the upper groove in the segmental plate 46 so arranged as to be in direct alinement with the peripherial groove of the pulley 53 adj acent the same. Both the pulleys 50 and 53,

as well as the upper portion of the segmental plate 16, are grooved to receive the feeding rope 56 which extends downwardly from the segmental plate 16 into the groove of the pulley 57 which is pivoted at 58 to an extension 59 of the main frame.

The mechanism for transmitting power to the feed rope 56 comprises a grooved drum G0 on which it is wound, as shown in Fig. 2. This winding drum 60 is secured to a shaft (31 supported on an extension of the main frame, as shown in Figs. 1, 2 and To the shaft 61 of the winding drum 60, is secured a large gear wheel 63 which meshes with a pinion 6 1. To the shaft 65 to which the pinion 64: is secured, is secured a large gear wheel 66 which meshes with a pinion 67, as shown in Fig. 2. The gear 66 may be held by the collar 68 and set screw 69 in proper position.

.Vhile the shafts 61 and 65 may be rotatable, I prefer to secure them rigidly in position by means of the nuts 71 between the plates G2 and 62'. In such event the winding drum. (30 is rigidly secured to the large gear 63 and both are mounted loosely on the shaft 61. In the same manner, the pinion (3% is rigidly connected to the large gear 66 and both mounted to rotate loosely on the shaft 65. The pinion 67 is connected rigidly to the sprocket wheel 72 by means of the sleeve 73 mounted loosely on the reduced portion 65 of the shaft 61. An endless sprocket chain 74 is connected between the large sprocket wheel 72 and a driving sprocket 75 mounted loosely on the transverse shaft 76, which is journalled in bearings 7'4 and 78, as shown in 5. The bearings 77 and 78, as shown in Fig. 5, are respectively carried by the brackets 79 and 80 rigidly secured to the lower longitudinal members 22 and 22 of the main frame.

The mechanism for transmitting power to the transverse shaft 76 comprises sprocket gearing 81 connected between the shaft 76 and the shaft 82. I prefer to rigidly connect the shaft 82 to the bracket 83 on top of the electric motor frame 84. The sprocket gearing 31, shown in Fig. 3, comprises an endless sprocket chain 81 meshing with a large sprocket wheel 85, keyed to the shaft 76 and also meshing with a small sprocket wheel 86. mounted loosely on the shaft 82 but rigidly connected by the sleeve 87 (F 2) to the large gear wheel 88 which meshes with the pinion 89 on the motor shaft 90 of the electric motor 84:.

The electric motor 84 is supported by the cross angle-beams 23 and 2-1, as shown in Fig. 3, and may be held securely in place on the main frame by means of the bolts 91, 91 and nuts 92, 92 engaging the retaining strip 93 at the forward portion of the motor,

'as shown in Figs. 2 and 5. Extending from the rear end of the frame of the electric motor, is a small bracket 94 provided with an opening 95 (Fig. 2) to receive the bolt' 96, the lower end of which is connected at 97 to the cross-beam 23, as shown in Fig. 3,Whereas its upperend is 'providedwith a nut98.

The controller 99 for the electric motor -84 may be mounted on the upper surface ot the motor frame and provided with a suitable manual operating lever 100 for actuating the usual and well-known rev( "ngswitch and rheostat mechanism for stating, stopping and reversing the electric motor wheneverdesired. f

Whenever the electric motor operated, motion is transmitted to the transverse shaft 76 through the gears 88 and 89 and the sprocket gearing 81. The sprockctwheel 75 being mounted loosely on the shaft 76,110 motion will be transmitted to the-gearingconnected to the winding drum untilthe clutch 101 is operated by means ot the lever 102, which is pivotedat 103 to bracket attached to the vertical portion of the cross angle-beam 24, as shown in Fig. 2. When the electric motor 8 1 is operated in the proper direction, and the clutch 101 is thrown inby means of the lever 102, motion will betransmitted through the sprocket 7 through gears 07, 66. 64 and 63 to the winding drum 60. It should be noted that this gearing is reduction gearing. so as to secure a slow rotation of the winding drum 60 and thus obtain a feeding motionot the rope 56 hecause it is this rope which, upon being pulled slowly,teeds the chain cutter .trame 4-3 from its initial cutting'position a short distance back of that' shown in Fig. 1.. up wardly approximately through asennircle. As shown-in Fig; 1, the teed rope ex- I tends forwardly from the under surtace ot the windingdrum 60 to the pulley'TiT over which it is directed upwardly into the groove 1041 4t) of? the segn'rental franc 4%, which is rigidly attached to the chain cutter frame The rope 56 then extends around the groove 105 (Fig. 4-.) of the pulley (Fig. 1) and thence upwardly intothe peripheral. groove of the pulley 50 iiORrWhlfJli the rope 56 extends downwardly into a e'roove 106 (Fig. in the rearward eXtension 107, supported near the'outer end of; the chain cutter :tranie 4153. The rope 50 tends t ansyersely from the extension 10? with repect to the main fl'EUILG, and is guides around the curved strip 108 to'the attachment 109. Where the rope is doubled on'its ltt and firmly connected to the conveyor belt, 110, as shown in Fig. 11. Not only is that portion 0t the rope/56 that s doubled on itselt securely riveted by the attachment 109 l to the belt 110, but it is also riveted. to the rectangular plates 111, which act as stopsior limiting the inovement eat the belt 110 to\ d the triangular plates 112 and .113. as shown in Figs. 3 and 11. The plates 112 and 113 cutter frame 43 (Figs. 3 and 11). It should be noted that the curved strips 108 and-109,

particularly thatdesignated 108, are of such thickness to space the plates 112 and 113 apart sufficiently to allow the rope 56 to slip freely between said plates. Therefore, what ever position the belt 110 may occupy at the time that thewinding drum 60 is rotated in clock-wise direction, asviewed in Fig. 1, the belt 110 will be moved until it occupies the position shown in 11, where the abut .ment 1.11. will strike ag,

vinst the pl: es 112, 118 and prevent further movement of the belt relatively to such plates. Further motion of the rope 56 around the extension 107 and around the pulleys 50 and 53 over the grooveoif the segmental plate 41-6, will thereby be prevented, and when the winding drum a 60 is eontinued in its rotation in the mill 11101 stated, the chain cutter trains will benioved' on is pivotal supports 41 and 42 in an anti clockwise direction, as viewed in Fig. 1, toward the mine wall. I

In order to adjust the position oi the chain cutter frame, I provide an adjustable supportfor the supplemental frame Thissupplemental frame 35 being pivoted at 34, 3 1 ,as shown in Figs. 1 and 3 is movable up or down, andfwhen such motion is effected the chain cutter frame is carried with it. Pivoted at 120. to the upright 2-7, as shown in Fig. 1, is a U-shaped support 121 through tl'ie'arnr122 of which extends a screw-threaded rod 12?; which ispivoted: at its upper end other side of the supplemental frame, 1 preter to pivot at a diagonal bracing bar 126 which is slotted at 127 at its lower end portion to receive the belt 128 extendinglaterally 'lt'rom thenprip ht 2?", so that by means or the nut .129 the bracing bar 126 may be secured firmly in adiusted position.

hen it is desired to adjust the elevation of the chain cutter frame 13, the nut 129 is loosened to tree the bracing bar 126 at one side of the machine' The nut 130 at the other side of the machine is loosened Whether the chain cutter frame is to be lifted or lowered. By means otthe nut 131, either by turning the same back or tightening up on the same, the chain cutter frame may be* moved as desired. It the nut 131. after the nut 130has been turned back, is itself moved in the opposite direction, the weight of the parts suspended from the supplemental frame35 will immediately lower the same so that the nut 131 always remains in contact With the arm 122. -By tightening up on the nut 131, the supplemental frame 35 is lifted and with it the chain cutter frame 43, until the desired position is reached. The nut is then again brought against the arm 122 to act as a lock nut, so far as holdagainst the brace bar 126 on the other side of the machine, to firmly brace the supplemental frame in both directions during operation of the chain cutter, and restoring the same to initial position. While I prefer the brace bar 126 at one side of the machine, it should be understood that the adjusting mechanism shown in Fig. 1, connected between the pivotal points 120 and 124, may be duplicated on the other side of the machine;

The loop chain cutter 132 is mounted on the chain cutter frame 43 as shown in Fi z 4 and is guided at the outer and lateral.

edges of the frame 43 and around the outer corners thereof in the manner shown in Figs. 3 and 15, wherein the U-shaped frame 133 is provided with grooves 134 for receiving the links 135, the outer links 136 being greater in width and bearing against the forward edges of the plates 133 and 137. These plates 133 and 137 engage the chain cutter frame 43, as indicated in Fig. 3 and may be secured in position in any desired manner. It should also be observed that the cutters 138 and 139 may be of different sizes and ex tend in various directions toward the center of the chain and laterally therefrom. Preferably the cutters are provided with angular extension plates 140 engaged by plates 141 and held in position by the nuts 142 threaded on the bolts 143 which extend through the links 136, 144 and 134 and are provided with heads 145 at their opposite ends and cross slots 146 for receiving a screwdriver. I prefer to provide the laterally extending cutters 139 so as to produce a kerf of sufiicient width to permit the cutter frame 43 to freely pass into the kerf as .it is produced; (See Fig. 3.) As shown in Fig. 4, a curved guide 147 is provided for the'upperleft hand corner of the chain cutter. This curved guide 147 serves to lift the slack portion of the chain upwardly from the trough 148 and direct it into the guideways shown in Figs. 3 and 15.

As shown at the upper right hand por tion of Fig. 4, a sprocket wheel 149 meshes with the sprocket chain 132 and is pivoted at 150 for driving rotation in an anti-clockwise direction. As shown in Fig. 19, the sprocket wheel 149 is secured to a gear 151 which meshes with an intermediate gear 152, as shown in Fig. 20. The bearing shaft 150 is mounted between a portion of the frame 43 and a bracket 153 which is bolted at 154 to the arc-shaped trough148. The shaft 150 is in reality a bolt provided with a head 155 fitting against the frame 43 and having a screw threaded portion 156 at its other end for receiving the clamping nut 157.

As shown in Fii g. 20, the intermediate gear 152 meshes with the gear 158 which is rigidly connected to the bevel gear 159, the latter meshing with the bevel gear 160, as shown in Fig. 18.

The bevel gear 160 is'keyed tothe shaft 161 which is mounted in a bearing 162 bolted at 163, 163 to the auxiliary frame 43 which is securely fastened at 164 and 165 to the circular trough 148. The shaft 161, as shown in Figs. 4 and 17, extends laterally to receive the large sprocket wheel 166 WfilCll is connected by a sprocket chain 167 directly to a sprocket wheel 168 on the shaft 90 of the electric motor 84. It is therefore evident that when the electric motor is operated, power will be transmitted throughthe sprocket chain 167 and the gears 16.), 159, 158, 152 and 151 to the sprocket wheel 149, which in turn actuates the loop chain cutter 132. It should be observed that although the shafts 161 and 40 are in alignment with each other, e as viewed in Figs. 2 and 4, said shafts are independently mounted. The shaft 40 is preferably held rigidly in position with respect to the arms 36 and 37 by the clamping members 33 and 39, so that the ends of the shaft 40 will serve as bearing supports for the bearings 41 and 42 from which the cutter frame-is suspended. The shaft 161 is mounted in the long bearing 162, as shown in Figs. 18 and 19, independently of the shaft 40,'so that the loop chain cutter 132 may be operated at any time, irrespective of the position of the chain cutter frame or whether it is moving or not.

As shown in Figs. 4 and 18, the auxiliary frame 43 is rigidly connected to the bearing support 41'so that the sprocket wheel 149, being mounted in the auxiliary frame 43, always retains the same relative distance from the supplemental frame That portion of the chain cutter frame: which guides the chain cutter during the cutting operation, is adjustable with respect to the supporting bearings 41 and 42. This adj ustment is secured by providing the chain cutter frame 43 with iiat plate extensions 169, 169 as shown in Figs. 3, 4, 16 and 17. At the right hand portion of the machine, as shown in Fig. 4, the extension plate 169' fits into a rectangular recess in the frame 43 and is held in adjusted position by bolting the plate 170 against the same, as shown in Figs. 16, 17 and 18. In order to strengthen the guides for the plates 169, 169 additional hit At the upper left hand portion of Fig. 4-

the vertical extension plate 169 niay be secured in adjusted position bythe bolts 17 2, 172; if desired, however,the bolts 51 and 54, as shown. in Figs. land 2, may be used to secure the vertical plates 171 and 169 firmly in adjusted position, but in such event the pulleys 50 and 53 will become fixed and will necessitate the rope 56 slipping around the same as it does around the-segmental plate 46.

The mechanism for adjusting the radial length of the chain cutter frame from its pivotal axis, is primarily forthe purpose of adjusting the radius of the'kerf to be cut in the mine wall, although such adjusting mechanism may also be used to some extent for taking up the slack inathe chain cutter 132. l l hen the radial length of the chain cutter. frame is to be varied to some extent, one or more links may be taken out or inserted in the chain, as occasion may require. lVhen the chain cutter frame, is to be lengthened, the same may. first be moved forward from its ,initial position a short distance and then the fastening mechanism for the plates 169, 169" loosened to permit the latter to slide to a lower-position, or until-the frame meets the floor of the mine. It may be preferred, however, both for lengthening and shortening the cutter frame, to provide, a' plurality of manually operated screwjaclis suitably located beneath the lower horizontal portion of the cutter frame. Assuming the chain cutter frame to be entirely clear of the mine floor when in. initial position. and when moved into the mine, it is evident that by looseuinn the adjusting; mechanism for the plates 169, 169, the nuts 130 and 181 maybe so operated as to lift or lower the supplemental frame .on its pivots 3a and 341 so as to move theshaft 10 approximately midway between the roof-and floor of the mine cham her. In this way, the floor of the anine will take the weight of the chain cutter frame 43, while the pivot shaft 410 and the parts carried thereby may be moved up or down while the fastening mechanism for the platesllll), 1G9 is in released position. lt is also obvious that in this 'manner the radial length of the chain cutter frame may be readily varied, links of the .chainlcutter beinginserted or removed as may be necessary.

After the shaft lO has been located approximately midway between the floor. and the roof of the mine, the-fastening mechanism for the plates 169, 169 may again be operated to securely clamp the parts 169 and 171, and 169', 170 and'171 in fixed relative posiframe 21 as well seolilallianly in position. llllt ruling jack 173 is shown in Figs. 1 and 2 pivoted at 174 to the upper surface of the supplemental frame 35, but by reason of the firmly secured brace 121, 123, it acts on the main as i on the supplemental frame35.

i As shown in Figs. 5 and 6, the lower longitudinal angle beams 22 and 22 may be provided with sliding shoes 175, 1.7 5 to facilitate movement of the mining machine over the mine floor as well as to protect the frame of the mining machine. 1

The loading apparatus comprises an in clined chute 176 which extends entirely across the main frameof the mining machine, as shown in Figs. 1, 2,8 and 6. (The inclined chute 178 is preferably composed 'of side angle strips 177 and 177 and inter- .mediate longitudinal strips 17 8, spaced apart from each other andfromfithe angle strips 177 and 177, as shown in Figs. 2 and 6. The lateral angle plates 177 and 177 and the intermediate strips 178 are held together by a series of transverse strips 17 9 which are.

riveted thereto. The rear end of the chute 176 rests ontlie upper transverse anglei beam '28, as shown in Fig. 3, while the forward portion restson the screw-threaded.rod 180, as shown in Fig. 1. Preferably, this screw threaded, rod 180 is solocated as to engage one of the transverse angle strips 179. -The rod 180 passes through an open ing in the bracket 181 which. is. securely fastened to the upright 27 of the main frame. By means of the nuts 182 and 183,

the position of the screw threaded rod 180 may be adjusted and consequently the lower portion of thechutc 176 may be lifted or lowered as desired. As shown in Fig. 2, the ad usting devices, comprising the screwtln'eaded rods 180 and 180" are located on 187 are held in adjusted position by the nuts 188, 189 and 188, 189 which are threaded on opposite sides of the beams on the screw-threaded rods .190, 190 respectively pivoted at 191 and 191 to brackets 192 and'192 securely fastened tothe uprights-27 and 27" as shown in Figs. 1 and 3. Obviouslyby operating the nuts 188, 189'and'188,189, the walking beams 187 and-187v maybe varied in position as desired, that is to say, lifted or lowered on the pivotal supports 186 and 186.

shown' in Figs. 8 and 9, the walking tudinal angle strips 196 and 196.

21.6 and 215, 216.

beams 187 and 187 extend toward the rear from their pivotal supports 186 and 186 a distance approximately equal. to the forward extensions shown in F igs. 1 and 3. The rearward extensions serve as supports for the transverse Z-beanis 193 19 2,10 which is riveted the chute 195, as shown in Fig. 7. This chute 195 is a rear continuation of the chute 176 and is similarly constructed, being provided with longitudinal lateral angle strips 196, 196 and intermediate strips 197 spaced apart from each other and from the angle strips 196 and 196 and held together by the transverse strips198 and 199.

The cross strip 199 is the one at the rear end of the chute 195, as shown'in 7, and is provided with rearwardly extending brackets 200, 200 which serve as bearings for the shaft 201, which also extends through the bearings in the brackets 202 and 202 extending rearwardly from the longi- The shaft 201 carries three drums, 203, 20 1,, and 205 which serve as direction pulleys for the flexible belt 110 when the latter is pulled around the same. The middle drum, 204C, acts also as a direction pulley for the driving rope 206 which is securely fastenedat 207 to the rear end of the flexible belt 110., as shown in Figs. 7 and 9. v 7

As shown in Figs. 7 and 8 the lateral rear portions of the chute 195 are provided with adjustable jacks for engaging the lateral faces of the mine wall, as shown by the dotted line position of one of the jacks in Fig. 10. These chute jacks are preferably constructed to have loops or ti -shaped rods 208, 208, the ends of which are slidable in sockets 209, 210 and 209, 210' and held in adjusted position by means of the set screws 211, 212 and 211, 212C The sockets 209, 210 and 209, 210 are provided with right angle extensions 213, 214 and 213', 214K extending in opposite directions, as shown in Figs. 7 and 8, and fitting in bearings 215, Set screws 217, 218 and 217", may also be provided for holding thojaclis in laterally extending position or in. any otherposition. By adjusting the lengths of the chute jacks so, asto be somewhat less than the 'idth of the mine chamher, the jacks will act as buffers to minimize the blows of the same against the mine wall as the entire mining and loading machine is moved forward for continued mining operations. The chief function. however, of

the chute jacks is to steady the rear chute section 195 by holding, it against lateral ibration during the loading operation.

In addition to the forward aclr 1Y3, ceiling jacks 219, 219 (Fig. 5)rmay be pivotally mounted at 186, 186 in common with the walking beams 187and 187, although having a pivotal movement independently thereof. It will thus be seen that by means of the ceiling jacks 173, 219v and 219, the main and supplemental frames may be securely held in position during the mining and loading operations; and during the loadin operation the wall jacks 208 and 203 may be relied upon to brace the rear chute 195 against lateral vibration. When the ceiling acks are released and the rear chute jacks swung downwardly partially or entirely, the entire mining machine may be pusned forwardly into position for making a new cut in the mine wall. lVhen the macnine is to be moved baclr from the mine wall connection for the pulling chain may be made at the handle or eye 220 at the rear lower portion of the main frame, as shown in Figs. 1, 2 and 3.

After all the parts have been properly ad justed and the ceiling jacks operated to secure the machine firmly in position, the con troller 99 may be operated to secure rotation of the electric motor in the proper direction to rotate the sprocket wheel 1 19 in the direction to move the chain cutter in cutting direction. hen the electric motor is started, the chain cutter begins to operate immediately,but it will not be swung upwardly from the position shown in Fig. 1 until the clutch 101 (Fig. 2') is thrown in. When this isdone, the winding drum (50 is slowly rotated to gradually move the cutter chain forward and make a U-shaped lrerf in the mine wall in order to completely sever therefrom a crescent shaped or semicylindrical shaped piece f material. As the loop chain cutter is gradually moved forward, it pulls vith it the lower end ofthe conveyor belt 110. As shown in Fi 11, there are pivotal connections at 118 and 118 between the on ter frame 13 and the triangular plates 112 and 113 (Fig. 3), and flexible connections by reason of the rope 56 between the plates 112, 113'and the belt 1.10. The dimension of the triangular-plates in alignment with the belt is such as to not interfere with the free movement thereof into the curved kerf 221 (Fig. produced in the mine wall. The belt 110 being flexible may also enter the lrerf 221 freely. As hereinbefore explained, when the stop 111 fastened to the rope engages the plates'112,

113, and the pull on the rope 56 is continued, the chain cutter and its frame will be swung forwardly while being pivotally supported by its shaft 4-0 in the bearings 38 and 39 at the forward ends of the arms 36 and 37 respectively of the supplemental frame 35 (Fig. So far as this operation. is concerned, the swinging motion is the same as if the rope 56 were fastened securely to the right hand end of the se mental plate 16 (Fig. 1). I

At that end of the belt 110 adjacent the chain cutter frame/ 13, I prefer to locate a plurality of pawls as shown in Figs. 2,

r 3, 4 and 11. The connection of each of these block 227 is firmlysecured to the cross plate 228, which in turn is connected to the rear end of the belt 110 by the clamping plate 229 which may be held in the position shown in Fig. 12 by the screws 230. means of this construction, the connections between the belt 110 and thechain cutter frame may be entirely of metal, including the rope 56, whereas the belt 110- may be made of leather, rubber, or woven-fabric, where greater flexibility is desired, although I prefer to use sheet metal for the belt 110 on account'of its greater strength and durability. The upwardly projecting pawls 222 do not interfere with theentrance ofthe belt or the connections between the same that as soon as themotionof-tlie chain cutter frame is reversed, the pawls will grip the material and carry the same baclr with the belt. 'When the clutch- 101 is thrown into released position by the action of the lever 102 2) the chain cutter frame .1-3, together with the piece of material severed I from the mine wall, is free to descend.

In order to secure the return U'lOYGIIlGIllJ or the belt 110 together with the material held on the same by the spring pressed )awls 222. newer is transmitted to the windl ing drum 231, which. is mounted loosely on the transverse shaft 76, as shown in Fig.

2. When the electric motor 84: is in operation, the shaft 76 is being rotated through the sprocket 81 (Figs. 2 and 3). Pivoted at 232 on a bracket 233 extending forwardly from the electric motor frame, is a manual, lever 234-. the short arm ofwhich is arranged to operate the clutch 235 into driving engagement with. the winding drum 231 so as to transmit. motion from the shaft "Z6 to said drum.

the rope 206 which extends around the drum 204: at the rear end of the rearchute 195,to the connection 207. This connection may be similar totha-t of the forward end of the belt on which the pawls 222 are mounted, but having a transverse metallic is rotated in theproper direction, the belt 110 will be pulled up the chute176 and l pawls 222.

hen the drum 2.31 is thus 1 ositively rotated, a pull'is exerted on has beenbrought to rest.

along-the rear chute 195 while the severed material is being held on the belt by the At the same time, the chain cutter frame is being restored to initial position. While the severed semi-cylindrical or crescent shaped block of material cut from the mine wall may be divided by breaking into various pieces due to itsown "weight, I contemplate removing the material by the loading apparatus in large blocks. It} should alsobe observed that although themachine is capable of severing the material entirely from the mine wall before it is loaded, the cutting operation may be discontinued before the block of material is completely severedand the spring pressed pawls relied on to break the cut' material from the mine wall when the drum 231 is actuated to exert astrong pull on the rope 206 andthrough the belt and its connec-- tioris, to thechain cutter frame, to move the same back toward initial position. For instance, hali: of asemi-oyhndrical or crescent shaped block of material may be out out and removed, first by making a cut sub- I stantially halfway toward the ceiling and and the chaincutter frame' The springs 2263 press the pawls constantly upward, so

breakin awai the cut out aortion and loading it, and then completingthe operation by by the paw1s'222, the number of which may be increased as desired.

VVhile' I prefer to use the'pawls 222, they may be omitted where the inclined chute 176 may be arranged so that the angle or repose will always keep the, material on thebelt and not permit it to slide back.

The spring pressed pawls are also preferable to assure theripping of the material from the mine wall, or its complete severance therefrom, so that when the belt is started baclgthe material will go with it.

It is evident that after the block of material has been severed from a mine wall and the chain cutter brought back to the positionshown in Fig. 3, the material in engagement with-the pawls has not as yet been moved a sufficient distance back from themine wall. lt-herefore provide means for continuing the rearward motion of the belt 1.10 even after the chain cutter frame In order to limit the rearward motion ofthe chain cutter frame, the lower longitudinal. angle-beams 22 and 22 may. be extended forward into such position as to. be engaged by the lower portions oflthechain cutter frame 43. 'If desired, however, limit buffers may be extended forward from the uprights 27 and 27to engage the edges of the plates 171 and 171".

I When the chain cutter frame is held from further baclrwardg movement in the manner indicated, continued pull 0111-116" rope 206 and on the belt will exert a pull on the rope 56 and cause it to slide around the curved plate 108 and along the plate 1'71 (Fig. 1) around the pulleys 50 and 53 and around the segmental place 46, assuming that the drum 60 is free to rotate by the release of the clutch 101.

In order to assure that the the clutch 101 wi l be in released position when the pull on the rope 56 from the belt 110 is exerted, I have provided a mechanical interlocking connection between the operating levers 102 and 23 1- of the clutches 101 and 235 respectively. This interlocking connection, as shown in F 2, comprises an interconnecting rod pivoted at 240 to the short arm of the lever 234 for the clutch 235. The other end 241 of the rod 239 extends to a position where it slides through a fixed braclzet 242 and is obstructed by the hub portion 103 of the operating lever 102 for the clutch 101, except when the clutch 101 is in released position, when the hole 243 in the hub 103 registers with the opening in the bracket 242. When this occurs, the rod 239 can be moved into the opening 243. It will thus be seen that not until the clutch 101 is fully released can the lever 234 be operated to throw in the clutch 235, and when the latter clutch is thrown in the clutch 101 is locked against being thrown in. Therefore, before the belt can be operated to restore the cutting mechanism to initial position, the clutch 101 must be fully released and after it is once released it cannot be again thrown in so long the drum 231 is operatin to exert a pull on the rope 206, the belt 110 and the rope it is therefore evident that whenever pull is exert-ed on the rope 56 tonnwind the same from the drum 60, the latter is always free, without any danger of having power transmitted thereto from the shaft in the opposite direction. The continued rearward motion of the belt 110 will take the material out of the inclined chute 17 6 onto the rear chute 195 and over the rear end thereof to dump the same into irine cars immediately below the rear chute. In this way the middle drum 204 will cooperate with the drums 203 and 205 to maintain the belt 110 in properforin, even after the belt has the rope 206 with the drum 231 which is mounted directly on the shaft 76, with no reduction gearing intervening.

After the operation of severing a block of material from the mine wall and of loading the same into a mine car has been performed, it is necessary to return the belt 110 to initialposition preparatory to producing another cut in the mine wall. In order to restore the parts to initial position rapidly, I provide a clutch 244 opposite that designated 100 on the shaft 76, so that after the clutch 235 is released, the lever 102 may be operated to efiect transmission of power from the shaft 76to' the sprocket 245, as shown in Figs. 1 and 5. This sprocket- 245 is geared by a sprocket chain 246 directly to the drum 60 without the intervention of the reduction gearing 63, 64, 66 and 67 shown in Fig. 2. As soon as the belt approaches the chain cutter frame, the clutch 243 may be thrown to released position and then the clutch 100 thrown in by proper movement of the manual lever 102 2), whereupon the motion of the belt will be continued but at a much slower rate of speed, until the stop 111 strikes against the plates 112, 113, whereupon further motion of the rope 56 relatively to the pulleys 50, 53 and segmental plate 46 will be dis continued, but further pull on the rope 56 will start feeding the chain cutter forward again. At such time the chain cutter is always operating, because whenever the electric motor operates the chain cutter is also operated through the sprocket 149. liurthormore, in order to assure that the chain cutter will always be operated in the proper direction, I prefer to omit from the controller box 99 a reversing switch, although one may be provided for initial connection of the motor to the supply means in the proper direction and thereafter a controller comprising the usual starting rheostat relied upon to alwaysstart up the motor in the same direction.

lhoapparatus as shown in Figs. 2 and 5 also makes provision for moving the mining machine laterally in either direction. For this purpose two windlass drums 247 and 248 are keyed to the shaft 76 so as to rotate therewith. Ropes indicated by the dotted lines 249 and 250 may be guided around the pulleys 251 and 252 respectively, which are mounted on brackets 253 and 254 connected to the cross angle-beam 25. The rope 250 may be extended to a suitable anchorage in the mine at one side of the mlning machine and the rope 249 may be extended to a suitthe ropes 24:9 and 250 one or more times about drums 24/7 and 248 respectively, either drum may transmit power to the rope thereon whenever desired. For instance, if the rope 249 is anchored at a suitable dis tance from one side of the mining machine, power may be transmitted to the rope 249 to pull the mining machine laterally when the rear end of the rope 249 is pulled manually to tighten the loops on the drum 247. In a similar manner by pulling back on the rope 250 its loops may be tightened on the drum 248 so that the mining machine may be pulled in the opposite direction. By anchoring the rear ends of either or both ropes 249 and 250 and partly looping the ropes around the drums 2&7 and 2 18, and exerting suitable pulls on the lateral extensions of the ropes, the mining machine may be shifted toward the rear by the elec'- trically operated power mechanism. In or der to shift the mining machine forward, the lateral extensions of the rope may be guided around direction anchorages before being secured to lined anchorages, toward the front of the mining machine. In such case, by properly looping ropes 24:9 and 250 around the drums 247 and 248 IGSPGCtlVGlY, and exerting suitable pulls on the rear portions of the ropes, the entireinining machine may be moved forwardly on the skids 17 5 and 175 by electric power mechanism. As shown in Fig. 1, pulleys 255 and 256 (Fig. 2) may be keyed to a. square ended shaft 257 so that a crank may be applied to turn the pulleys and 256 and thus exert a pull on either rope 249 or 250, as desired, to secure the proper frictional connection between the same and the Windlass drum 24:7 'or 248. Also indicated in Fig. 1, the pulley blocks for the guide pulleys 251 and 252 may be pivoted and located opposite openings 258 in the lower longitudinal beams 22, 22' of the main frame of the mining machine. Individual operation of the drums 255 and 256 may be secured by not perinanently connecting the ropes 24:9 and 251) thereto but relying upon wrapping the ends of such rope around the drum to secure operating connection in a well-known manner.

It should be observed that in some in stances the feeding operation of the loop chain cutting mechanism. may be continued beyond the point where the block of material is entirely severed trom'the mine wall, '50 that the pawls 122 may snap over and above the cut out section of material. This will effect the direct and positive engagement o'l the pawls with the material. so that when the belt 110, together with the cuttingmechanism, is retracted, the material will be drawnbaclc'in a very positivemanner. However, in most instances, it would be preferred to rely on the pawls 122 digging into the out material upon reverse movementthereof so as to oaiisebackward movement of the material from the mine wall.

Obviously,those skilled in the art may make variouschanges in the details and arrangement of parts without departingfrom the spirit and scope of my invention as deti nod hy'the claims hereto appended; 1 de 'e, therefore, not to be restricted tothe f exact construiiition disclosed in the drawings and in the foregoing description.

lVhat I claim, and desire to hare protected. by Letters Patent of the United States:

1. The combination with a main frame, of a supplemental .tramepivoted thereto,

core cutting mechanism having an unob structed core, opening therethrough carried by said supplemental frame, a bracing member pivoted to said main frame, a screw-threaded rod pivoted to said supplemental fra'me,and two nuts on said screwthreaded rod cooperating with said bracing member to adjust the position of said Supplemental frame and hold the same in adjusted position. v

2. The combination with cutting mechanism, of means for operating the same, a'

frame for said cutting mechanism, a rope frictionally connected to said frame, winding apparatus connected to one end of said rope, a conveyor belt connected .to the other end of said rope, and power mechanism conneoted to the other end or said belt.

3. The combination with cutting mocha} nism, of means for operating the same, a frame for said cutting mechanism, a rope :frictionally connected to said frame, means. tor exerting a pull on one end of said rope .rear after said frame reaches its initialposition. t i

4:. T he combinatimi of cutting mechanism having an unobstructed core-opening therethrough, means for operating the same to cut a core, a frame for said cutting mechanism, power mechanism for operating said frame to feed said cutting mechanism, a clutch for effecting the operation of said feeding mechanism, mechanism for restoring'said cutting mechanism to initial position, a clutch for effecting the operation of said restoring mechanism, and an interlock between said clutches to prevent both from being thrown in simultaneously. 2

5. The combination with cutting mechanism having an unobstructed core-opening theretlirough, of means for operating the Same t0 cut-a core, means for feeding said

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