US1325031A

US1325031A - Mining-machine

Info

Publication number: US1325031A
Authority: US
Publication date: 1919-12-16
Anticipated expiration: 1936-12-16

Description

E. C, IVIORGAN.I

MlNING MACHINE,

APPLICATION FILED JULY 3. I9I4. RENEWED IULY'KB, 1919.

Patented De@.16,1919,

LSQELSL waTNEssEs 1lil provision of means for cutting a kerf or UNITED sTATEs IPATENT oEEioE.

EDMUND C, MORGAN, OF CHICAGO, ILLINOIS.

MINING-MACHINE.

Specification of Letters Patent. l Patented Dec. 16, 1919.

Application filed July 3, 1914, Serial No. 848,727. Renewed July 8, 1919. Serial No. 309,468.

To all whom it may concern.'

Be it known that I, EDMUND C. MORGAN, a. citizen ofthe United States,l residing Vat Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Mining-Machines, of which the following is a specification.

My invention relates to mining machines, and one of its objects is the provision of improvedl apparatus .for cutting out sections from the mine Wall, breaking up such sections into smaller sections and removing the same away from the mine wall for loading purposes.

Another object of my invention is the kerfs in the mine wall and automatically rcmoving the fine particles of material produced during the kerf cutting operation.

A further object of the invention is the provision of automatic mining apparatus in which a chain cutter cuts out a crescentshapedsection of material from the mine Wall, and such section is broken up into smaller sections and moved onto a platform Without undue friction and into position where a flight conveyer removesvsuch smaller sections to the rearvend of the mining` machine in convenient position for loading into mine cars.

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

Referring tothe accompanying drawings, Figure 1 represents a plan view of my iinproved mining machine in operative position'in a mine; and Fig. 2 is an elevational view, partly in section, of Athe construction shown in Fig. l.

The mining machine shown in the' drawings comprises a main frame 3, and a supple- A mental frame 4 which is pivoted to the main frame at 5 between the vertical standards 6.

The main frame 3. maybe. mounted on the

skids

7, 7 on'the mine floor and may be madeA of such Weight, strength and material as will be suitable. The'mai'n frame is also provided with suitable j ackz 8, 8, which are mounted at the upper ends to `the standards 6. By meansvof these-jacks. the main frame may be irmlyinnchored in4 adjusted position in the mine, particularly to resist 'j swinging of the mainframe or rearward movement thereof.

The supplemental frame 4 comprises upper horizontally extending bracket arms and a lower horizontally extending platform, which serve to support the various parts of the automatic n'iechanisn'i. A motor, preferably'an electric motor, and shown diagrammatically at 9 in Fig. 1, is mounted on the rear end of the platform to one side thereof. The pinion 11 on the shaft of the electric motor 9 meshes with the gear 12 which is keyed to the transverse shaft 13, the ends of which are mounted in the bearings 14, 1l at the upper rear portion of the supplemental frame 4. At the central portion of the shaft 13 is a worm 15 meshing with the horizontal worm gear 16, below which is a sprocket 17 meshing with the sprocket chain 18. This sprocket chain is provided with a plurality of

laterallyextending flights

19, 19, which move over the upper surface of the platform 10. The sprocket chain flight conveyer 18, 19, is endless and its forward portion meshes with a sprocket wheel 20 mounted on a vertical shaft between the platform 10 and the lower end of the forward intermediate connecting frame 21, the upper end ofwhich is connected by means of the stationary bearing 22 to the forward endsof the horizontal bracket arm 23 and 24. These bracket arms extend forwardly from the cross-piece 25 of the supplemental frame and join at their ,outer ends where the bearing 22 is located.

wheel 29 is also mounted in the intermediate frame 21 and carries a sprocket wheel 31,

as shown in Fig. 1. It should be observed that Fig. 2 shows certain portions of the machine in side elevation when the machine is in the position shown in Fig. 1, and that other parts are shown in end elevation.

However, Fig. 2 shows all the parts in side elevation when the chain cutter extends forward in central position.

Meshing with the sprocket Wheel 31 is a sprocket chain 32 extending around the frame 33, which is provided with suitable guideways for said sprocketl chain and is supported by the intermediate frame 21.

' The sprocket chain 32 is provided with cut- -tral portion of the chain cutter frame33.

ters 34, extending laterally or axially relative to the cutter frame 33, as shown 1n Fig.

. 1. The sprocket chain 32 may be tightened or loosened by means of the nuts 35 and 36, which are threaded on the screwthreaded rod 37 extending rearwardly from the cen- It should be observed, however, that the screw threaded rod 37 is fixed to the rectan- 35 is loosened and the nut 36 tightened, the

cutter frame will be moved tothe left, either to make more slack in the chain or to per- -mit the radial length of the cutter to be appreciably changed. If necessary a link may be removed in order to prevent the chain from becoming too slack when the desired change in the radial length or range of the cutter' is obtained. By loosening the nut 36 and tightening the nut the cutter frame may be moved outwardly relatively to the upright axis of rotation and thus slack may be taken out of the chain or the radial cutting range increased. If desired an extra link may be inserted in order to secure the propel' increase in the cutting range without causing the chainl to' become too tight.- After the desired adjustments have been made and one or more links inserted or withdrawn, the nuts -35 and 36 are both tightened tolhold the cutter frame rmly in adjusted position relatively to the-axial frame21. f

In order `to control the operation of the chain cutter I have provided a clutch 38, which may be of any suitable or well known construction, provided 'with a groove 39 to' be engaged by an operating lever. When the current to the electric motor 9 is turned on in the proper direction, motion will be l'transmitted to the transverse shaft 13 and thence through the worm 15 and worm gear 16 to the vertical shaft 40, the upper end of which is journaled in the bearing 41 at the rear end of the horizontal bracket arm 42 attached to the cross-piece 25 of the supplemental frame. The rotation of the vertical shaft imparts motion to the sprocket 17, which in turn actuates the

endless flight conveyer

18, 19 and imparts motion to the s rocket wheel 20, the pinion 26, the gear 27, the worm 28, the worm wheel 29, the sprocket wheel 31 and the chain cutter 32. vThe arrow 43 indicates the direction of movement of the flight conveyer, and the arrow 44 indicates the direction of movement of the chain cutter.

yThe entire chain cutter is also advanced Y laterally over approximately a semi-circular path during the cutting operation. lThe means for advancing the cutter chain laterally comprises a peripherally grooved wheel 45 connected to the upper end of the intermediate frame 21, so as to rotate therewith on the bearing 22 and onF the bearing in the platform 10 providedfor the sprocket wheel 20. To the wheel 45 at 46 is secured one end of a rope 47 the other end of 'which is se` cured to a grooved wheel 48, mounted on a vertical shaft carrying the worm Wheel 49. It should be observed, however, that the worm wheel 49 is mounted loosely von the shaft 50 and that a clutch 51 is provided for connecting the worm wheel 49 to the @wheel 48 so as to transmit motion tothe lat- `ter from the shaft ,50. This may be done by suitable means engaging the groove 52 of the movable member of the clutch 51 in Aa well known manner. The upper end of the shaft 50 is journaled in the lrear end of the bracket arm 23, and the lower end of the shaft 50 is journaled in the bracket arm 53 extending from a portion of the supplemental frame.

Meshing with the worm wheel 49 is a worm 54 on the transverse shaft 13. Therefore, when the electric motor 9 is operated inthe proper direction, motion will be transmitted to the worm gear 49 so as to rotate the same in anti-clockwise direction. When the clutch 51 is thrown in, motion will be transmitted through the wheel 48, the rope 47, and the lwheel 45 to the intermediate frame 21, thereby swinging the cutter frame laterally from right to left looking forward orV in an anti -clockwise direction when viewed in plan. Although I have shown a jaw clutch 51, any other suitable and well known vclutch may be used if desired. The sameY is true with respect to the other clutches shown. l

' When the cutter frame is in initial position, it is diametrically opposite the position shown in full lines in Fig. 1. The chain cutter loops the section of material in whic the kerfs are' cut, and when the chain cutter is in substantially central position the shape of the section being cut out will be in crosssection as indicated by the dotted lines 55 in Fig. 2. l/Vhen a complete semi-circle is made the complete section of material out out will be crescent shaped in plan view as shown in Fig. 1. section of material cut out is too large for the conveyor to handle,A it is desirable to Inasmuch as this entirel break up the same into smaller sections. In order to accomplish this result, I provide,-

rautomatic locking mechanism for holding the cutter frame in its final position and con-v` nect to the cutter frame mechanism to exerta bending force on the crescent-shaped section at one end thereof to break up the same into smaller sections as indicated by the irregular dotted

lines

56, 5,7, 58,. In order to lock the cutter frame against being retracted, I provide on the upper surface of the wheel a catch 59, which presents a vertical face toward the cutter frame and an inclined face in the opposite direction. Between the outer ends of the bracket arm 23 and 24 is pivoted a latch lever 60, which will be lifted by the inclined surface of the catch 59 when the wheel 45` approaches the position shown in full lines in Fig. 1. The latch bar I6() being pivoted to the supplemental frame at 6l, is free to drop of its own weight when the catch 59 passes under and beyond the same. The vertical face of the catch 59 will then engage the latch bar 60 and prevent the cutter frame from being retracted if it is attempted to do so.- In some instances it may be desirable to continue the lateral advancing movement of the cutter frame, and it is therefore preferred to provide an additional catch 62 on the upper surface of the wheel 45, so that' the cutter frame may be locked by the catch 62: engaging the latch bar 60. The latch G2 is also provided with an inclined surface over that portion which is visible in plan View. Therefore, when the wheel 45 rotates a suflicient distanceanti-clockwise the

catches

59 and 62 will lift the latch bar 60, but when it is attempted to rotate the wheel 45 in a clockwise direction, the latch bar 60 coacting with eitherl the latch 62 or the catch 59 will act as a locking mechanism to -prevent such return movement. TheI locking mechanism may be released, however, by lifting manually the latch bar 60 a sufficient dis- Y tance.

A flat rope or metal belt 64 is connected pivotally at 63 to the front end of the cutter frame 33 opposite the cutters 34. Thisrrope or belt extends around .the crescent-shaped section of material cut out and thence tnward the rear where it is secured to the drum 65 mounted on the shaft GG, bearings for which are provided on the platform 10 and in the cross piece 25. Loosely mounted on the vertical shaft 6G is a worm wheel 67, which meshes with the worm 68 on the transverse driving shaft 13. When the electric motor 9 is operated, motion will be transmitted to the worm wheel 67 to rotate the same in an anti-clockwise direction. When the clutch 69 is thrown in7 motion will be transmitted to the vertical shaft 66 and the drum 65 to exert a pulling force on the belt 64. Now when the locking mechanism comprising the latch bar 60 and the catch 59 1s in locking position, the cutter frame 33 will not be retracted when such'pull is exerted on the belt 64. The belt will be moved toward the 4dotted line position thereof broken up into smaller sections it is moved wholly or partially over onto the forward arcuate end of the platform 10. The forward edge of the platform is indicated by the full line 70 in Fig. 1.

Extending radially from the intermediate frame 21 are the arms 71, which constitute a spider having the intermediate frame '21 as its hub. The outer ends of the arms 71 each carry vertical shafts, to the upper and lower ends of which are connected the rollers 7:2, 72. These rollers are provided with

ang'cs

73, 73, and hold between them a cylinder 74, which is free to rotate on the rollers 7:2. lVhen the belt or rope 64 is pulled while the cutter frame 33 is held stationary the forward central portion of the spider frame acts as a fulcrum to secure the necessary bending force for breaking up the crescent-shaped section of material into smaller sections. It will be observed that the spider arms 71 may be so located or arranged with respect to the cutter frame that when the latter is locked in position one of the radial arms 71 will project directly forward as shown in Fig. y1. However, the cylindrical drum 74 may itself be made of sufficient strength to act as a fulcrum on which to break up the crescent-shaped section into'smaller sections.

Inorder to move the material onto thev platform into such position that the conveyer flights 19 will move the materialtoward the rear, the lever 60 is lifted after substantially half of the crescent-shaped material has been wrapped around the drum 74, as shownA in Fig. 1. When the locking mechanism is released by the lifting of the lever 6() and the rotation of the drum 65 continued, the lcutter frame 33 will be gradually pulled around to initial position. As this occurs the cylindrical drum 74 will be free to rotate and therefore its rotation will not be dependent upon thel rate of return movement of the cutter frame. The

smaller sections of material will be held inl jecting flights 19 toward the rear ofthe platform. Aguide plate 76 may beproterial away from the drum 74, and into lit proper position withrespect'to lthe Hight conveyor.

In practice I prefer to design and operate the machine 1n such a manner that two sections of crescent-shaped material between the roof and the floor of the mine will be suiiicient before the machine must be moved forwardly to a new position. I prefer also to slice out the upper section first, in order that the bottom of the horizontal kerf may act as a shelf for the line particles of coal produced 'by the cutters. When these cuttings are ejected the forward lips of the platform should be in position to receive the same. The chain being operated in the direction of the arrow 44, will cause the cut tings to be moved over the inclined surface 77 onto the platform from which they can be readily scraped into the trough to be acted upon by the conveyer flights 19.

It should be observed that the forward lip 70 is adjustable longitudinally because it in reality forms a part of a supplemental platform-10, fitting-in suitable' grooves or guideways in the main platform 10. By means of a lever 78, pivoted to the supplemental frame at 79 and having a pin-andslot connection 80 to the supplemental platform 10 the latter may be moved forwardly or backwardly at will. y In this manner the position of the lip 70 may be adjusted with respect to the mine wall and the lower horizontal kerf.

In order to adjust the cutter frame to the proper inclination for making a loop cut across the mine wall `I provide mechanism for lifting and lowering the supplemental frame. connectedv rigidly to one of the vertical standards 6 is a` forwardly-extending bracket 81, the forward end of which is Aprovided with an opening through which extends a screw-threaded rod 82, the lower end of which is pivoted at 83 to a bracket fixed to the platform 10 and extending laterallytherefrom as indicated at 84.

Now by turning the' wheel 85 which is screw-threaded onto the rod 82, the supplemental frame may be tilted on the pivots 5 and the cutter frame can therefore evidently be moved into position for making -a loop cut across the upper portion of the mine wall, or into position for making a loolj cut across the lower portion of the mine wa In order to shorten the width of the mining machine and enable the same to pass through narrower entries, the supplemental platform 10' may have a section thereof, such as that indicated by the reference charlacter 10 provided with hinges 86, 86, which will enable the section 10 to be folded upwardly and over against the cylinder 74.

At one side of the main frame and In the operation of the machine, the cutter frame is adjusted to its proper inclination for the production of a loop cut across the mine wall, this being effected by the operation of the Wheel 85. Before the cutting operation is begun the cutter frame 33 should be extended diametrically opposite to the position shown in Fig. l. When the cutter frame is in initial .position the entire machine may be moved forward into its new position and held in such adjusted position by means of the 'acks 8, 8. During the normal operation of the machine, the

cutter frame 33 will be in initial position at the time when-the cutter frame is to be readjusted vertically or both vertically and forwardly. Inasmuch as the cutter frame 33 may have sufficient width to act as a shelf or carrier for the material cut out it will hold up its end of the cutout material until ready to be broken into smaller sections and moved onto the platform 10. If any material remains on the inner lower surface of the cutter frame 33, it will be forced ofi' the same and onto the platform 10 inside of the belt 64 as soon asa new cut is begun. When the machine is in readiness for the cutting to begin, the clutch 38 is thrown in to effect the operation of a Hight conveyer and of the gears` 26, :27, 28 and 29 to effectl the rotation of the sprocket wheel 31 and the chain cutter 32 in the direction of the arrow 44. lAt the same time .or immediately thereafter, the clutchy 51 is thrown in to effect a pull on the rope 47 and the gradual feeding forward of the cutter frame through an arc of about 180 degrees. When the cutter frame reaches its limiting position it will be automatically locked against retraction by the latch mechamsm comprising the leverc60.

An entire crescent-shaped loop cut havin been made across the mine wall, the clutc 511 is thrown out and the clutch 69 thrown in.

The pull on the belt 64 will then be exerted to break up into smaller pieces the section just cut away from the mine wall. In doing this the smaller sections of material will be moved partially or, wholly onto the platform 10 and wrapped around the drum 74. When this occurs, the lever 60 is lifted to release the latch mechanism, whereupon the pull onthe belt 64 willstart the cutter frame 33 on its return path to restore the same to initial position. During the retraction of the cutter fr ame 33 the remaining portion of the crescent-shaped section of material will be broken into smaller pieces and substantially all of the material will be carried into position to bc acted upon by the flights 19.

During the retraction of the cutter frame lthe spider frame with the cylindrical drum for the material to slip on the periphery of the drum 7 l while being pressed against it,

the drum 7.4 will be free to rotate independently of the spider and the cutter frame, Aand therefore resistance against movement of the material toward the convey'er will be' avoided.

B making a crescent-shaped sectional cut at tie upper portion ot'v the nine wall first and then a similar cut immediately below the same, advantage may be taken of the lower surface of the horizontal kerf as a ledge or shelf from which the -cuttings may be scraped by the chain onto the 'platform 10 from which they may be moved by the belt 64 yand the {

iight conveyer

18, 19. Whenever desired, the forward lip 70 of the supplemental platform 10 may be adjusted in position by operating the lever 7 8.

By providing an additional notch 87 inclined on its upper surface. and having a. vertical face to prevent retraction of the cutter frame, and locating this additional catch in the position indicated in Fig. 1, the entire section of blocked-out mater1al1 may be moved through a short arc. This may be done by releasing the lever from the catch 59 when the clutch 69 'is first thrown in to exert a pull on the belt 64. As soon as the lever 60 is released from the latch 59 it may be allowed to engage the catch 87 as soon as the latter has rotated a suicient distance. The catch 87 will then be relied upon to holdthe cutter frame 33 stationary while the pull .on the belt 64 continues and while it is being moved toward the dotted line position shown direction.

in Fig. l to break up the crescent-shaped section into smaller sections.

It should be understood that that portion of the mining machine shown in the drawings as operating in the mine Wall may be Iregarded as the front of the mining machine. The operator may control all the operations from the rear of the mining machine, because vdevices well known in the art may be provided for operating the lever 76, the wheel 85, the llever 60, and the electric switches for controlling the motor 9, from a suitable location back of the mining machine.

Obviously those skilledv in the art may maire various changes in the details and arrangement of parts without departing from the spirit andscope of my invention as defined by the claims herein.

By providing the flange at the lower por tion of the drum 65 with a series of notches 88, this drum may be held from rotation by the pawl 89, which is pivoted at 90 to the supplemental frame. in this way the drum 65 may be locked against rotation in either' Vhen the clutch 69 is released and the aaavl moved intoA one "bf the notches Sii, tric drum 65 will be lockedvwhile the other end of the belt 64 may continue to move with the cutter frame.v The continuedl movement of the cutter frame may, there# fore, be relied upon, when desired, for breaking up the section cut out even before thesame is entirely severed from the mine wall. If the drum 65 is locked at the proper time, the belt 64 will reach the dotted line.

fvancing, will increase the efficiency ofthe apparatus by enabling the cutting mechanism to be restored to initial position sooner after it makes a 'complete stroke.

It should be noted that the cutter frame when in adjusted position is rigidly connected to the frame 21 which constitutes an upright axle having an vupright aXis. When the wheel 85 is rotated to tilt the core-cutter on the horizontal axis 5, the v'ertical aXis of swinging movement of' the core-cutter will be tilted so as to incline from the lower forward portion upwardly and rearwardly. In this position the core-cutter is enabled to make an arch-shaped cut along the mine roof. This arching of the mine roof is important as it forms a support for the roof and enables the chamber to be cut without the use of props. ln this way a self-supporting chamber having an arch-shaped roof which remainsintact for a long period of time is produced. This arching of the roof is particularly desirable when there are strata of foreign material in the-vein of coal somewhere between the floor and roof of the mine chamber.

Having thus fully disclosed my invention, by describing and illustrating one embodiment thereof, what l claim and desire to secure by Letters Patent ofl the United States, is: v

1. In a mining machine, the combination with a frame, of mechanism having an unobstructed core opening therethrough and mounted on said frame for entirely cutting from a mine wall a crescent-shaped section of material in a general horizontal direction, and automatic means mounted on said frame neaif said cuttingmechanism for effecting mechanically the transfer of the material in its solid state in large biocks 'from its cut position in the mine wall toward loading position.

2. A mining and loading machine comprising core cutting mechanism for cutting from a mine wail a. block of material while retaining the same intact, and means for movi'ng the severed block of material intact horizontally back from the mine Wall between the iioor and roof of a mine chamber in a mine andA independently of the movement of the machine.

prising a supporting frame, aY loop chain core cutter mounted on said frame, means for operating said loop chain core cutter to cut a core of material in a mine Wall, and

automatic means mounted on said frameand extending therefrom into position for acting on the material in its cut position at the mine wall to move it directl from along said frame towar tion.

4. A mining and loading machine comloading posiprising a supporting frame, a loop chain core cutter mounted thereon, mea-ns fdr operating said cutter to cut a core of material in its native bed, and power mechanism mounted on said frame and extending into position for taking substantially all of the cut material from the place assumed thereby after being cut and moving the same back from the unmined mass along said frame toward loading position.

5. A mining and loading machine comprising hert-cutting mechanism for cutting from a mine wall a predetermined mass of material, and means operable in a mine chamber. between the floor and roof thereof for moving the entire mass of the severed section intact from the upright mine `wall in a general horizontal direction along such mine chamber toward loading position.

6. A mining and loading machine comprising a suppoi'ting-fi'aiiie, a loop chain core cutter mounted on said frame to extend out from the same, means for'operating said .cutter to cut a core in.a mine wall, and power mechanism mo.. iited on said frame to follow said core cutter in position to act on the material in wliatever position it assumes of itself immediately after being cut, to take substantially all of it from such position along said frame toward loading position.

7. A mining and loading machine comprising a supporting frame, a loop chain core cutter mounted thereon and extending out therefrom, means for operating said cutter to cut a core in an upright mine wall, and automatic means mounted on said frame to follow said core cutter and extending out from said frame in position for acting on the mass of the core of material in the mine wall in whatever position it. assumes of itself immediately after bein cut by said loop chain core cutter, to targsubstantially all of said material from sinchfpositiori along said frame toward loading position.

8. A mining and loading machine comprising a frame, mechanism mounted thereon for entirely cutting a solid core of maaway thereterial .from an upright mine Wall While l maintaining the core body of substantially the same dimensions as when in its native l bed, means for operating said cutting mechl anism, power mechanism also mounted on 70 3. A mining and loading machine comsaid frame for moving the said solid core of. material back from the mine Wall in a en-l eral horizontal direction between the oor aii`d"roof of the mine chamber, and conveyer mechanism connected to said frame for mov- A ing said block of material into position for loading.

9.1A mining and loading machine comprising a supporting frame, core cutting mechanism having an, unobstructed core opening therethrough and mounted on said frame and movable relatively thereto, and dislodging mechanism also movable relatively to said frame for acting on the material in its cut position in the mine wall and moving it directly therefrom toward loading position. "T10. A mining and loading machine cornprisiiig a supporting frame, mechanism A mounted on said frame forcutting a core by cutting on both sides of a body of material in a mine wall and at the back thereof, and manually controlled power mechanism mounte on said frame adjacent said core cutting mechanism for effecting mechani- 96 cally the transfer of the cut material from its cut position in the mine Wall toward loading position independently of the operation of said core cutting mechanism.

1l. A mining and loading machine comlo@ prising a supporting frame, means for cutting a4 core of material in its native bed in a mine by cutting on both sides of the core and at the back thereof, conveyer mechanism connected to said frame and movable there- 105 With to be continuousl in `position for loading the r,materiah andy intermediate mechanism mounted on said frame ahead of the receiving portion of the conveyer mechanism and adjacent thereto for effecting meohanically the transfer of the cut material di,-A rectly from its cut position in a mine Wall to said conveyer mechanism. l2. A 'mining and loading machine comprising a supporting frame, core cutting H5' mechanism mountedon said frame and extending therefrom, means for operating Said core cutting mechanism to cut on both sides and at the back .of the core in a mine Wall, a

conveyer mounted on said :trame inV osition 12? mounted thereon for severing a crescent -kerfs in a mine Wall above 'shaped section of material from its native bed in a general horizontal direction, means also mounted on said frame in position for moving the severed section bodily away from its severed position While maintaining the material in comparatively large pieces, said means being movable bodily with said frame and always in position for moving cut material awa-y from the unmined mass, and mechnism for operating said moving means to move the cut material 'relatively to said frame toward loading position.

14. A mining and loading machine comprising a supporting iframe, an endless chain cutter, a chain-cutter frame for said cutter and inclosing an open space bounded in front and at the top and bottom by said chaincutter to y guide the latter, means mounted on said frame for operating saidchain cutter by actuating the same relatively to said guide frame and moving the latter to feed said chain cutter transversely to the plane of said guide frame to produce and below and at the back of a body of material while the latter remains in its native position, means mounted on said frame and extending therefrom for breaking up the material extending through said guide frame, mechanism mounted on said .supporting frame for removing the broken up material from the mine Wall, and means for swingingl the chain-cutter in an upright plane to adjust the same to various heights for a given stationary position of said supporting frame.

15. In a coal mining machine, the combination with a supporting frame, of a chain coal cutter, a cutter frame having a portion for guiding said chain-cutter for producing a plane kerf along said portion, means for driving said chain-cutter to cause the same to travel along said chain-cuttery frame, means for feeding said chain-cutter by moving said cutter-frame to canse a core of coal to extend through the same, and means for adjusting the position of the entire chaincutter frame with the chain-cutter carried thereby, relatively to said supporting frame to vary the path of travel of said chain-cutter for different cuts of coal from the mine wall.

16. In a coal mining machine, the combination with a main frame, of a supplemental frame pivoted to said main frame, an upright chain-cutter carried by said supplemental frame and having upper and lower portions rectilinear in elevation, means for operating said chain-cutter including feeding movement thereof laterally relatively to said supplemental frame during the cutting operation to produce a core having upper and lower flat surfaces along such rectilinear ortions of said cutter, and means forv ad- `justing the inclination of said supplemental framereiatively to said main frame to move the chain-cutter including said rectilinear portions to various heights.

17. A mining and loading machine comprising a supporting frame, means mounted thereon for cutting spaced apart kerfs and a back intermediate kerf bounding a core of material in a mine wall, conveyer mechanism mounted on said frame to have a predetermined relation thereto and to said cutting means, and mechanism mounted on said frame intermediate the cutting means and said conveyer mechanism, for taking the dislodged material at various heights directly from the space originally occupied thereby in its native bed, and moving such material onto said conveyer mechanism.

18. ln a mining machine, the combination With a supporting frame, of loop chain corecutting mechanism mounted to swing on an upright axis on the forward portion of said frame, means for operating said core-cutting mechanism thereof on said upright axis relatively to the supporting frame While the latter remains stationary, and means for adjusting the elevation of the entire core-cutting including the swinging mechanism including said upright axis to 'a single core of material during each operation, mechanism for adjusting said operating means to cut a'core at another-elevation during another operation, and means acting on the material in its cut position at various heights for taking the same from its cut position and moving it in a general horiand an additional con- I zontal direction back from the mine wall toward loading position.

20. In a mining machine, the combination with a loop chain core-cutter having top and bottom runs rectilinear said core-cutter having an unobstructed core-opening therethrough, means for o e'rating said loop chain core-cutter includin y the feed thereof laterally, and means for a justing the position of the entire chain-cutter including such rectilinear portions to enable successive cuts to be made across the mine wall at various elevations in a coal mine.

21. A mining and loading machine comprising mechanism for cutting spaced apart kerfs and rentrant kerfs extending back of the cut body of material, to cut'a core, dislodging mechanism projecting into the reentrant lrerfs, means for operating said cutting mechanism to cut a core approximately horizontally across the mine wall, a frame for supportingsaid core cutting mechanism -m elevation,

and said dislodging mechanism, and means for adjusting the height of said cutting mechanism and said dislodging mechanism relatively to said supporting frame to effect the cutting and dislodgment of cores successively at superposed positions.

In a mining machine, the combination with a main supporting frame, of a supplemental frame adjustably mounted on said main frame, core-cutting mechanism mounted on said supplemental frame to swing on an upright axis relatively thereto in feeding direction, means for operating said core-cutting mechanism including swinging movement thereof on such upright axis to cut a core bounded by spacedapart kerfs, a back connecting kerf and the face of the mine wall adjacent the forward end of said supplemental frame, and means for adjusting the position of said supplemental frame, together with said upright axis to varythe elevation of the core-cutting mechanism. K

23. In a mining machine, the combination with a main. frame, of a supplemental frame adfjustably mounted on said main frame, a hub mounted on said supplemental frame having an upright axis of rotation, a cutterframe extending radially from said huband having an unobstructed core-opening at its vouter portion, an endless loop chain-cutter mounted on said cutter-frame, iheans for operating said chain-cutter including the feed thereof by lateral movement together with said hub on the upright axis of the latter, and means for adjusting the elevation of said supplemental frame relatively to said main frame to vary the height of said hub togetherwith said cutter-frame and said cutter.

24. In a mining machine, the combination with a supporting frame, of' a hub mounted on bearings on said framefa cutterframe rigidly connected to said hub and extending radially therefrom and having an unobstructed core-opening at its outer portion, a loop chain core-cutter mounted on said cutter-frame to travel along the same,

.means for partially rotating said hub together With said cutter-frame t effect feeding of said chain-cutter, means for actuating said chain-cutter to cause the same to travel along said cutter-frame transversely to the direction of the feed thereof, and means for adjusting the elevation of said hub together with said "cutter-frame and said chaincutter.

25. A mining and loading machine capable of alternately cutting and loading cores of material each successively below the 4preceding core comprising a supporting frame, core-cutting mechanism mounted on said frame, means for operating said corecutting mechanism, means for adjusting the elevation,A of said core-cutting mechanism,

and means mounted on said frame for moving the cores back from the mine Wall from the path originally occupied in the mine Wall by such cores and transferring such cores to loading position while remaining substantially intact.

26. A mining and loading machine comprising mechanism for cutting out from' a mine Wall a block of material byA cutting kerfs simultaneously at the top, bottom and back of such block and leavin it in the space occupied thereby in its native bed, and loading apparatus for effecting the transfer of such block from various elevations at an upright mine Wall between the floor and roof of a mine chamber mechanically hack from such positions in a general horizontal direc'- tion along such chamber toward loading position.

27. In a mining machine, the combination With a main supporting frame, of a supplemental frame, a cutter-frame mounted on said supplemental frame in a substantially vertical plane and having -an unobstructed core opening therethrough, cutter chain guideways on said cutter-frame including straight top and bottom runs for the chain, an endless loop chain cutter mounted on said cutter-frame to travel along saidfguideways including said straight top and bottom runs to cut a U-shaped kerf in a mine wall including upper and lower plane kerfs, means for operating said chain-cutter including the actuation thereof along said guideways and the feed of said cutter-frame in a direction transverse to its substantially vertical plane, and means for tilting said supplemental frame to adjust the elevation of said cutter-frame and the chain-cutter thereon.

28. In a mining machine, the combination With a main frame, of a supplemental frame adjustably mounted on said main frame, a hub having end bearing portions mounted on said supplemental frame, a cutter-frame rigidly connected to said hub and extending radially therefrom and having an unobstructed core-opening at its outer portion, a chain-cutter mounted on saidA cutter-frame and extending from one side thereof, means foroperating said chain-cutter including partial rotation of said hub and swinging movement of said cutter-frame to effect the feed of said chain-cuttertransversely to the direction of its cutting travel, and means for tilting the supplemental frame together with said hub, cutter-frame and chain-cutter to adjust the elevation the same.

29. In a mining machine, the combination with a supporting frame, of a hub mounted in bearings on said frame, a cutter-frame connected to said huh to move therewith, an endless chain-cutter mounted on said cutterframe and extending around an unobstructed core-opening in said cutter-frame, means for operating said chain-cutter inthe thereof by partial rotation cludin d hub relatively to said supporting of sai frame, guides for said chain-cutter on said cutterlframe including a straight run, and

means for moving the chaincutter as a Whole in its own plane to adJust it to various cutting positions.

'30. In a mining machine, the combination withl a supporting frame, of. mechanism mounted thereon for cutting cores of material at variousl elevations across the mine wall .each successively below a preceding core, means for operatingsaid rmecl'ianism for cutting each core by a. single feeding movement across the mine Wall, conveyer ymechanism mounted on said frame and .ex-

tending longitudinally thereof, and inter- `v mediate mechanism mounted von said4 frame for dislod'ging. tliecut material and moving itonto said conveyer mechanism-for transfer toward loading position. f ,v

30'.' VIn a min-ing machine, the combination with a supporting frame, of a chain-cuttei f frame mounted on said supporting framefor arcuate movements relatively thereto, a iieXible traveling chain cutter mounted on said cutter-frame, guideways on said cutterframe for saidichain-cutter, said guideways iincludingnpper and lower vportions fior B0 guiding. said chain-cutter to produce upper and lower plane kerfs, 'said cutter-frame having an unobstructed core-opening therethrough for thepassage of the core cut by said chain-cutter, .means for operatinv saidchain-cutter' including actuation thereof along said vguideways transverse to the direction of feed and including the swinging of said cutter-frame in an arc on said supporting frame transverse to the path of travel of said chain-cutteralong said guide` Ways, aiid means for adjusting the elevation of said cutter-frame to edect the cuttin out successively of a plurality of cores one a ove the other While the supporting frame remains substantially in the same position.

32. A mining and loading machine conib wall irrespective of its height from the floor of the mine chamber for niovingsuch ma'- terial toward loading position.

A mining and loading machine comvpi'ising a supporting frame, .meansI for holding said frame. stationary, core-'cutting mechanism mounted on said frame foi,y

- 34. A mining and loading mabhine 'comf bodily movement relativelyV theretofmeans for operating said core-cutting" mechanism' including the feed thereof to, completely detach a single core of material from its native bed4 and leave it substantially in the 70 l space originally occupied thereby,'conveyer mechanism mounted on-said4 frame in fixed relation thereto and extending'I longitudinally-thereof, and mechanism on said frame intermediate said conveyer mechanism andl said core-cutting mechanism for: taking the material from the position assumed thereby after being cut' irrespective of its fheight from the mine floor and movingthe same onto said conveyer mechanism.

pris'ing a supporting frame, a loop chain' core cutting' having an unobstructedcore opening therethrough, and mounted on said frame to yextend outwardlyl therefrom, con- 3 5 veyer mechanism mounted "on said frame'.

With its receiving portion spaped back from' A theouter portion of said core cutter, and

intermediate mechanism' mounted on said -f frame to take substantially-all the material' 4m)- from the' position. assumed thereby after* -being cut by said core cutter, irrespective"` of the elevation of the cut position of such material above themine floor, and move such'n material onto the receiving portion of said conveyer mechanism. v 1 j 35. In a mining machine, the combination with a main frame, of a supplemental frame mounted for oscillation on a horizontal axis on` said main frame, cutting mechanism '100 mounted on said supplemental frame, means mounted on said main frame for Swingin said supplemental frame' together with sai cutting mechanism on said horizontal axis lto adjust said cutting mechanism to various 1 051;`

heights, means foijoperatingr. said cutting mechanism 'including the feed vthereof on an upright axis to cuta solid core of material 'in its native bed, and loading apparatus mounted on said supplemental frame in pol sition relatively to said cutting mechanism forV removing the material from the' mine Wall after being cut by said cutting mechanism.

36, In a mining machine, the combination 11.5l with a frame having spaced-apart eisten-v sions Witli spaced-apartl bearings on the latter, of a hub between' said spaced-apart extensions and mounted on said spaced apart bearings, a loop chain core-cutter having an unobstructed core opening therethrough and connected to said hub to in ove 'as a Whole `with said hub, means for operating said chain-cutter including the' feed thereof by jpartial rotation of saidhub, and mechanism 125 for effecting adjustnient'of the height of said hub to varv the lieivflit of said core-cutter.

U. c 37.- A mining and loadiii machine coinb prising a supporting frame, a loop chain core cutter comprising an open frame hav- 139 .140 with, said frame hiawin ing an unobstructed core receiving opening extending therethrough, said cutter being vmounted on said frame for bodily movement therewith, means for operating said loop 5 chain core cutter to cnt a solid core of material in an upright mine wall, and means 'mounted on said frame to operate relatively thereto to act on the cut material to carry the same back from thergmine wall directly from the position assumed thereby after being cut, irrespective of the height of such cut material from thel floor oi' the mine chamber.

if A mi in g machine comprising loop' `l6 gchain kerf,cutting-mechanism, a main frame,'.u

a supplemental' frame on which said' cutting mechanism 4is mounted to s ling 4in feedingl partial rotation of said hub to effect feedingr of said cutting\mechanism, and mechanism for elevating said supplemental frame to adjust the height of said hub and the height `of said cutting mechanism connected to said Befhub'. 40. In mining apparatus, the combination with a' frame, of 'an upright hub mounted in-A bearings on said'frame, a cutter frame connected toy said'hub to move.bodily therean unobstructed core-opening therethroug an endless chainciitter moiinted oii said cutterframe and extending laterally therefrom in feeding direction, means for operating said chain-cut- A 46 ter by partially rotating said hub to swing L saidcutterfframe transversely tothe direction Iof cutting travel of said cutter and actuating said chain-cutter to cause it to tra-vel along. ,said cutter-frame, and means 'Sgr-'for adjusting the height` of\ said hub to- 'i gether with said cutter-frame and said chain-cutter. A

4 1; In. mining apparatus, the combination .i with a main frame,- of \a supplemental frame l 6,5pivoted to said mainframe on a substantiallyhorizontal axisz an upright hub havy ing end bearing portions connected to said supplemental frame, a cutterfframemonnected toithe central portion of said hub and extending radially therefrom and having an unobstructed ,core-openinglatits outer portion, an endless chain-cutter mounted on said --cutter-franie and entending'to an actuating osition near the axis of said hub, and means or 'cperating chainecutter including -feed thereof by partially rotating said hub to swing said cutter-frame arcuately ielai tively to said supplemental frame, and means for-holding the supplemental frame y at adjusted elevation relatively to said Amain frame to predetermine the elevation of the core cut across the mine wall.

42. -In a mining machine, the combination with a frame, of a loop chain cutter mounted thereon, means for opera-ting said chain cutter to cutl sections of material, means for feeding said cha-in vcutter during the cutting operation substantially at right angles to the plane of said chain cutter, and power mechanism mounted on said frame for breaking up the cut sections of material and movin the same back from the mine wall. 43. mining and loading machine comprising a' supporting frame, core cutting mechanism mounted thereon, and conveyer fmecl'ianism mounted on said frame to operate in a plane substantially at right angles to the plane of said cutting mechanism irrespective of the position of said cutting mechanism relatively to said frame' or -rela- 90 tively to said conveyer mechanism.

44. A mining and loading machine comprisinga supporting frame, a loop chain core cutter mounted on said frame in an upright plane, means for operating said loop 95 chain core cutter including fee ng movement thereof relativelyto `said frame, and conveyer mechanism mounted on said frame to operate approximately in the plane of the lower portion of said loop chain core iy cutter and. in a plane at right angles to the plane of said loop chain core cutter irre, 'spective of the position ofthe latter relatively to s aid frame. 1

45. 1n a mining machine, the combination 105 with a supporting frame, of core-cutting mechanism mounted thereon and including a guiding'- frame having an unobstructed core-opening therethrough, and upper and lower rims rectilinear in elevation with the space between them substantially less than the longitudinal length of said cutter-frame projecting forwardly from said supporting frame, means for adjusting the elevation of the forward portion of said cutter frame to predetermine the elevation of the core to be cut from a mine wall between the floor and I the roof of a mine chamber, and means for operating said core+ ciitter in an of its adjusted positions including the eed thereof 120 A in a direction transverse to the actuating path to cut upper and lower substantially flat surfaces, and a'core projectin through said unobstructed core-opening o said cut` ter-frame. I 1

`'46. A mining and loading machine comprising an upright loop chain core-cutter, a frame on which said loop chain core-cutter is mounted while being held in an upright position througlgit its range of movement,

horizontally back from the mine wall along such chaniber to draw the cut material with it forbreaking loose such cut'materi'al and cutter, and a conveyer` mounted on said frame in a plane transverse to the plane of said loop chain core-cutter, the plane of said conveyer extending through substantially the lower'inost length of said loop chain core-cutter.

47. A mining machine comprisinga loop chain cutter, a frame for guiding said loop chain cutter, said frame having an unobstructed core opening therethrough, means forfeeding said chain cutter transversely to the plane thereof on an axis of rotation, .i means vfor actuating said chain cutter, and

mechanism for adjusting the radial length "of said'frarne relatively to said axis of rotation. 48. In a mining machine,

the lcombinatioii with a loop chain cutter, of a pivoted vec frame for supporting and guiding said loop chain cutter, said :trame having an unobstructedcore opening therethrough, means `for swinging said chain and cutter to secure Vfeeding movementof said cutter, means for 4actuating said cutter during said feeding movement, and means for adjusting the ra- ,l dial length of said frame.

49. A mining and loading machine comi prisinga supporting frame,` of core-cutting mechanism-mounted on said frame and having an unobstructed core-opening therethrough, means for operating said'core-cutting mechanism including arcuate feed thereof 'relatively to said. frame, and mechanism mounted on said frame to ac t on the core inthe space occupied thereby in its native bed for moving `such core directly back from such position along said frame towardl loading position.

50. A. mining and 'loading machine prising a supporting frame, a vloop chain core-cutter mounted on said frame, means foioperatmg said core-cutter including feed thereof by swinging it lin an arc, and positive means mounted on said frame for acting on the material cut by said cutter and taking it directly from its native position Yback from the mine Wall along said frame into loading position.

'prising mechanism for cutting a solid core 51. A mining and loading machine comof material in its native bed between the ioor and roof of a mine chambensaid cut'.-

'l ting mechanism having an unobstructed core "'kerf to form a columnin amine wall, means opening therethrough, and means movable moving it toward loading position.

52. A mining machine comprising a main supportin frame, core-cutting mechanism `mounted t iereon for simultaneously cutting spaced-apart kerfs and aback connecting for'operating said cutting mechanism inand means mounted on said frame and movable relatively thereto for breaking off pieces of said column and moving the same toward loading position.

53. In a mining machine, the .combination with a supporting frame, of means for holding said frame stationary between the ioor and the roof of'a mine chamber, a supplemental frame pivotally mounted ony said supporting frame, core cutting mechanism mounted at the forward end of said supplemental frame, means for swinging said core cutting mechanism in a general horizontal direction on an upright axis on said supplemental frame Aand means mountedon said supplemental frame for acting on the cut material to move the same toward loading position.

54. A mining and loading machine vcomprising a supporting frame, of a loop chain core-cutter mounted on said frame, means for operating said core-cutter including feeding movement thereof relatively to said relatively to said frame toward loading position.

5,5. A mining and loading machine comprising a supporting frame, a. loop chainv core-cutter comprising a cutter-frame having an unobstructed core-opening therethrough for guiding the chain around the core cut by said cutter, means for operating said cutter including arcuate feed thereoiE to cut an arcuate core, and means mounted on said frame for moving the cut core of material in an arcuate path away from a mine wall immediately after being cut by said cutter.

, 56. ln a mining machine, the combination with core cutting mechanism, of arcuate feeding means for said core cutting mechanism, and means for removing the ,cutmaterial along a path concentric with the arcuate feed of said cutting mechanism.

57. A mining and loading 'machine comprising a supporting frame, means mounted thereon for severinga crescent-shaped block of materia-l iii its native bed adjacent said frame, and mechanismA mounted on said frame and movable' relatively thereto for moving the severed blocl bodily away from its severed position in an arcuate path of travell immediately after being severed.

58. A mining and loadingilmachine comprising a frame, loop chain core-cutting mechanism mounted on said Jframe and having an unobstructed core-opening' therethrough for the passage of out material,l`

means for operating said cutting mechanism including arcuate feed thereof 'relatively to said frame, and power mechanism mounted on said frame for moving thev cut material back from the mine wall relatively to said frame, over anarcuate path of travel.

59. In a mining machine, the combination with loop chain cutting mechanism of means for operating the-same to cut a core of material in its native-"bed, and means for removing the cut material along the line of core cutting feeding movement of said cutting mechanism.

60. In a mining machine, the combination with a supporting frame, of loop chain core cutting mechanism mounted thereon, and power mechanism movable relatively to said supporting frame for removing the cut material along the line of movement of said loop chain cutting mechanism but in reverse direction from such movement.

l6l. In a mining machine, the combination of kerf cutting mechanism for cutting a core in a mine wall, meansfor feeding said cuttingmechanism on a curved line to entirely sever a block of material, and means i for removing said block of material along said curved line.A

62. A mining machine comprising core cutting mechanism having an unobstructed core-opening therethrough, means for feeding said cutting mechanism over an arcuate path of travel, and means operating in the korf produced by said cutting mechanism to move the cut material away from the mine wall independent of thefeed of said cutting mechanism.

. 63. In a mining machine, the combination with a loop chain cutter having an unobstructed core openin therethrough, of means for feeding said loop chain cutter over an arcuate path of travel to'sever a Crescent-shaped block of material from a mine wall, and means for moving the severed section of material in an arcuate path from the mine wall and moving the said chain cutter to initial position preparatory for another cut.

64. In a mining machine, the combination of means for severing a section of material in its native bed and leaving it substantially in the space occupied thereby, and mecha'- nism for moving the severed material from the mine wall and moving the cutting mechanism to initial position preparatory for another cut.

65. In a mining machine, the combination with a loop chain cutter having an unobstructed core opening therethrough, of means for feeding said loop chain cutter over an arcuate path of travel for entirely severing a crescent-shaped ,mass of material in its native bed, and means for-bodily moving the entire severed mass toward loading position by the restoration of the chain cutter to initial position preparatory for an- A,

other cut.

66. In a mining'machine, the combination with a loop chain core cutter, of means for v operating the same, and meansfor automatically loading the coreout by said cutter lby restoring said cutter to initial posltion preparatory for another cut. i.

67. A mining and loading machine comprising a supporting frame, cutting mecha'- nism mounted on said trame and adapted to sever` a block of material intact .in the. mine wall, means mounted on said frame .for

moving said block of material bodily away from the mine wall, mechanism on said frame for coacting with said moving means to break up saidblockl of 4mlaterial into smaller sections, and loading apparatus mounted on said frame toextend rearwardly .for moving the smaller sections of material toward loading position.

68. In mining apparatus 4the combination l the position assumed thereby after beingl cut.

69. In a mining machine,the combination with a loop chain cutter, of a frame guiding the same, means for operating said 'loop chain cutter to cut a core of material in atv its native bed, and means connected to said frame for effecting mechanically the trans- 1 fer of cut material from the mine wall toward loading position.

70. A mining and loading machine comprising a supportirg''frame, core-cutting mechanism having an unobstructed` 'core' opening therethrough, means for operating said core-cutting mechanismjincluding arcuatefeed` thereof relatively to said frame, and means mounted on said Jtrame and extending therefrom for breaking the core of material from its native position in "a mine wall and moving it toward loading position.

71. A mining and loading machine comprising a`Y supporting frame, a loop chain cutter having an unobstructed' core-opening therethrough, means for operating said cutter including the feed thereof to cut' a core in a mine wall while remaining integral therewith at one end of such core, and mechanism mounted on. said frame to project therefrom back of the core-cutter in -position to break ofi' pieces from said core and move such pieces toward loading position.

72. A mining and loading machine comprising a supporting frame, loop chain corecutting mechanism having an unobstructed core-opening 'therethrough and mounted on --10 chain core cutting mechanism having an unobstructed core-opening therethrough, a

Supporting frame, and means for intermittently moving successive cores against each other over said frame.

74. A mining and loading machine-comy prising loop chain core cutting mechanism,

apparatus capable of being extended into a kerf spaced backy from the face of a mine 4wall at any height between the -fioor and 20 therro'of of the mine chamber, and meansl for operating said spaced apparatus forl moving the material from its cut position -1n the mine wall to'ward loading position.

75. AA mining and loading machine comprising a supporting frame, loop-chain corecutting mechanism mounted on said frame for making a U-shaped kerf in a lmine wall horizontally across the same, means mounted 'on said fram-eJ and extending therefrom .30:l to operate in the Saidfkerf to break down a` section severed and pull such section away from the unmined mass, and means o said frame in position toreceive the dis odged material and convey it away. f

76. A mining and loading machine comprising a supporting frame, lo'op chain coi-e- 'cutting mechanism mounted thereonv for cutting a single core of material in a mingJ wall and leaving it substantially in the space I 40 occupied thereby, and means mounted on said frameJ and extending therefrom in position for insertion back of the material irrespective 'ot its elevation within predetermined limits to engage such material and 4.5 move it back fromA the mine wall.

77. `A'Inining machine comprising mechanism for cutting a plurality of spaced-apart kerfs and an inten-connecting back kerf simultaneously across the mine wall of a mine .chamber in a lateral direction, )breaking `means arranged to follow immediately in the path ot said cutting mechanism, a conveyer, and, means for adjusting the height of said conveyer to correspond with the height of the laterally movable cutting mechanism, and to the height of said following breaking means.

78. 'A mining machine comprising cutting means for simultaneously making. a plu- -rality of kerfs Iacross the wall of a mine chamber in a general horizontal direction, simultaneously operating breaking Ameans following immediately in the path of the -cutting means to break downgthe section 55 bounded-by said kerfs,'simtil,tatneously op- -l ing element for receiving' thel dislodged maerating loading means comprising a conveyer in position to receive the material dislodged by. said breaking means, and moved thereon by the latter, and means for adjusting the elevationof-both the cutting means and said conveyer to maintain the same in coperative relation with said dislodging mechanism for all such elevations. v 79. A mining machine `comprising cutting means for making a, :plurality of kerfs simultaneously in a mine wall in a gen- `eral horizontal direction, simultaneously operating breaking means following immediately'in the path of said cutting means to break down the material bounded 'by said kerfs, simultaneously operating loading means comprising a conveyer in position' to receive the material dislodged by said 'breaking means, and means for adjusting the elevation of said cutting means and said breaking means, and the forward end of said loading means.

80.-A mining and loading machine comprising -a supporting frame, means Amounted thereon in position for cutting a core in a ,y

mine wa'll adjacent said frame, dislodging mechanism mounted on said frame to follow the cuttinV meansto act on the material vsubstantial y in the space originally occupied thereby and while restingzon the shelf produced by `the cutting of such core, and loading apparatus mounted `on said frame to extend to. sugli shelf adjacent the bottom of the core to receive the dislod ed material directly from its cut position w en dislodged from the mine wall. v

81. A mining machine comprising a fiexie ble traveling cutter-carrying element, a guide vframe therefor having anunobstructed opening therethrough, dislodging mechanism, and means cooperatively related to said dislodging mechanism in close'proximity to the lowermost reach of said cutter-carry.-

terial. y

'82. In a mining machine; ithe'combin tion with a supporting frame, of core-cutV`l ting mechanism mounted thereon, means for giving' said cutting mechanism an arcuate feeding movement on an axis of rotation on said frame, an arcuate `fitlcrum on said frame.spaced from said axis of rotation, and means mounted on said frame to coact with said arcuate fulcrum to break the core of material into smaller sections.

S3. A mining and loading machinec-omprising asupporting frame, core-cutting mechanism mounted on said frame, means for operating said core-cutting mechanism including arcuate feeding movement thereof 125 relatively to said supporting frame, andv means mounted onsaid frame in position to extend in. front of and in back of the core cut by said cutting mechanism to coperate to remove suchcore from the minewall. 130

ioo

85. In a mining machine, the combination with loop chain core cutting mechanism, of a iexible device connectedto said cutting mechanism to enter a kerf produced thereby, and means for exerting a pull on saidflexible device to restore said cutting mechanism to initial position.

86. In a mining machine, thecombination y with cutting mechanism for producingl a U- exerting a pull on said Flexible device to reshaped kerf in a mine wall, of afiexible de-A vice connected to said cutting mechanism to enter a lieri" produced thereby and embrace the cut-section of material, and means for store said cutting mechanism to initial position.

87. n mining apparatus, the combination with kerl cutting mechanism, of a flexible device connected to the front end thereof, and means for exerting a pull on said ilexible device to restore said cutting mechanism to initial position. l

88. In mining apparatus, the combination with kerl cutting meclianism,` of a flexible device, means for extending said flexible device into the kerf produced by said kerf cutting mechanism to4 enibrace the body of the cut section back ot' the same, means for holding one end of said iexible device, and mechanism 'for pulling the other end of said ilexible device to dislodge the material from the mine wall.

89. ln a mining machine, theJ combination with a flexible device, of means for moving said exible device into a kerf in a mine 'rennes1 .l

mounted thereon, an additional frame lmofunted on Asaid supporting Jframe, and

means mounted on said supporting frame in position to be spaced `from said additional frame to coact with the latter for breaking up the core cut out by said cutting mechanism. y

92. A mining machine comprising cutting mechanism, a frame, and means for breaking `up the material cut out by' said cutting mechanism by forcing said'material against said frame directly from the mine Wall.

93. A mining machine comprising cutting imeclianism, a frame, a cylinder mounted on l a pull on said flexiblel device to etl'ect the Wall back of the body of the material boundtherewith to break up the material cut out by said cutting mechanism by moving said material, directly 'from its cut position A against said drum.

91t A. mining machine comprising a suppcvirting` frame,j. core-cutting mechanism breaking up of said material on said frame.

y95. In mining apparatus, the combination with a flexible device, of means for exerting a pull on one end of said flexible device to pull the same into a kerf in a mine wall, and means for exerting a pull on the other end of said iiexible device to move material away from the mine Wall.

96. ln mining apparatus, the combinalholding said arm in a predetermined position, and mechanism for exerting a pull on said rope when th same is extended into a kerf in a mine wal..

98. ln mining apparatus, the combination with a chaincutlter, of a drum interldbping said chain cutter, and mechanism coperatiiig with said drinn for breaking up the material cut out by said chain cutter.

99. ln mining apparatus, the combination with a chain cutter, of a freely rotatable cylindrical drum interlooping said chain cutter, and mechanism coperating'ivitli said drum for breaking up the material cut o t by said chain cutter.I

100. In a mining machine, the combina-- tion with a supporting frame, of a flexible device movable relatively to said supporting frame to penetrate a mine well in an arcuate iio ` 1 path, and means for operating said flexible device toinsert the same in a lie-rf back of the material in a mine Wall to engage the same and move it away from the mine Wall.

101. A mining and loading machine comprising means for producing a kerf extending in an arc back from the mine Wall and spacedl therefrom, a belt, and means for inserting said belt in said kerf for engaging the cut material to break it froimthe lunmined `mass and move it back therefrom.

. for exerting a pull on said rope, a conveyer,

and mechanism cooperating With said rope to ibreak up cutout material and move the same onto said conveyer.

104:. In` mining apparatus, the combinationvvith a flexible device, of means for.ex'

tending said flexible device into a kerf in a mine Wall, loading apparatus, means for exerting a pull on said flexible device, and

mechanism cooperating with said ilexible device to breakthe material away from the mine Wall and move it onto said loadingapparatus when the pull on said flexible device is exerted.

105. In a mining4 machine, the combination with cutting mechanism, of means for voperating the same including the feeding thereof, dislodging apparatus comprising a lexible lbelt connectedto said cutting mechanism, and means for locking the cutting `mechanism against retrograde movement during the operation of said dislodging apparatus.

106. In a mining machine, the combina-v tion With a supporting frame, of a cutter frame mounted thereon, anendless chain. core-cutter mounted on said cutter-frame,

means for actuating said endless chain corecutter by causing the same to travel along said cutter-frame, the latter having an unobstructed core-opening therethrough, means for giving said cutter-iframe and said core-' cutter a swinging movement to feed vthe latter, dislodging mechanism mounted on said supporting frame and connected to said cutter-frame, means for holding said cutterrame against return movement, and mechanism for operating .said dislodging mechanism While its connection with said cutterframe is being held against return movement. 107. In a mining machine, the combination `with kerf cutting mechanism, of means for operating the same, a belt connected to said kerf cutting mechanism, means forautomaticallypreventing the return movement oi?` said cutting mechanism, and means for exerting a pull on said belt to dislodge cut material.

108: In a mining machine, the combin'ation With a supporting frameof a supplemental frame movab-ly mounted thereon', a flexible. device connected to said supplemental frame to enter a kerf vin a mine Wall, automatic mechanism for permitting movement of said supplemental .frame in said kei-f in one direction but preventing movement in the opposite direction and means for exerting a .pull on said Hex ble device to move material engaged by a portion'thereo intermediate its ends.

109. In a mining machine, the combination with asupporting frame, ofa supplemental' frame movable thereon, means for actuating said supplemental frame, a belt connected yto the front end of said supplemental frame to embrace material, means for automatically preventing return movement of said supplemental frame, and means for exerting a pull on said# elt'. to move material engaged thereby. y 110. In a mining machine, the combination -With a supporting frame, offa supplemine Wall, a belt connected yto the front end of said supplemental frame, Winding mechanism for the other end of said belt, means for moving said sup lemental frame topull the belt from the Winding mechanism, and means on the .Winding mechanism t'ohold. it from turning when the pull is exertedon said belt by movement of said supplemental frame. Y l

111. In a mining machine, the combination with a swinging frame, of a flexible' device connected' thereto, means for locking said Vframe in a' predetermined'position, and mechanism for exerting a ,pull on said flexi- 119 blel device to cause the latter to engage material over an intermediate portion of said device to effect th removal of material v*from a mine Wall transersely with respect 'to said device.

112. In mining apparatus, the combination With a swinging arm, of a ropeconnected to said arm,` of means for operating said arm to move said rope into a vkert in the mine Wall, a locking device for holding said 120 arm ina predetermined position, and means for exerting a pull on said'rope to pry the material away from the mine Wall.

113. In mining apparatus, the combination with a frame, of an arm pivoted to said liframe, a flexible device 1 connected to the Outer end of said arm, means for swinging said arm to extend lsaid flexible device into a i kerffin a mine Wall, locking mechaisin'for holding saidarm vin a predeterminedposi-'lSO 95 y mental framev adapted to enter a kerf in'a tion, and winding mechanismfor exerting a pull on said flexible device to move material from vthe mine wall andbreak up the same. v Y

114:. In .a mining machine, the "combination with a main frame comprising lateral upright supporting standards, of a supplemental frame pivoted to said upright standards for tilting movement between the same,

a forwardly extending bracket at' the upper portion of said supplemental frame to form a supportingfork with the lower portion of saidsupplemental frame, oorefcutting mech- `anism pivotally mounted between the arms v 115. A mining and loading machine ccm- V .prising a supporting frame, loop chain corecutting mechanism mounted on said frame, said loop chain core-cutting mechanism having an unobstructed core-opening vtherethrough, means operating relatively to said frame v(and back of the core to dislodge the latter, said dislodging means being mounted --on said frame and extending out therefrom,

and'means in position on said frame for receiving' the dislodged material directly from the space occupied thereby in its native bed. l 116. A mining machine comprising a l platform, al radial frame pivotally mounted at Y ed core-opening therethrough,

J'mechanism mounted on said radial frame,

and having an unobstructon said platform core cutting dislodging ymechanism connected to said `tion with loop chain cutting mechanism,

frame, and loading apparatus mounted on 404 said platform.

-117Q ln mining apparatus, thel combinameans for feeding said cutting mechanism over a predetermined arc of a` circle, and an v arc-shaped receiving platform having a cui'- vature at is forward end substantially the same as 'the predetermined arc of movement-v of said cutting mechanism, and occupying f mine wall, mechanism frame for cutting al single core of material? 'a position close to the mine wall throughout its' maximum arcuate periphery during. the cuttingoperation.

11S. In miiiiiig apparatus,

vthe farthermost reach of said severing-means f and to the contour of the severed mass. @il

119. A mining and loading machine comprising a frame having a platform'for receiving dislodged material directly from a mounted on said in the mine wal l by producing a continuous the combina-A tion of means for severing a section of inaj kerf therein entering and emerging from the mine wall at spaced-apart' locations, Asaid cutting 'mechanism having an unobstructed core-opening therethrough, means for operating said cutting mechanism including feeding movement thereof relatively to said frame, means mounted on said frame for.

moving lthe cut material directly from itscut position onto said platform and along the same towardloading position, and means for adjusting the elevation of said platform for-varying the positionl thereof in accordance with the height'of the cut material.

120. A mining apparatus comprising a loop chain cutter, a platform having its forward edge adjacent the lo'wermost length of "said chain cutter, and automatic means for moving the cut material from its natural ledge below the body of the cut material onto said platform.

121. A mining and loading machine comprising a movable platform, a -radial frame pivotally mounted on said platform in a plane transverse to the plane of said platform having an unobstructed core opening therethrough, endless chain cuttin mechan ism guided on said frame, dislodging mechanism connected to said frame, and loading mechanism for receiving material from said. dislodging mechanism.

122. A mining machine 'comprising aloop chain cutter, a platform in close proximity to the lower length of said cutter, said platform being in a plane transverse to the plane of said'chain cutter, and means for 'operating said chain cutter to cut a core of material in a mine wall along the forward ed e of said platform and in close proximity t ereto throughout its length.

123. A miningy machne comprising cutting mechanism mounted in anupright plane and having an vunobstructed core-opening therethrough, a platform in a plane transverse to the plane of said cutting mechanism and in position vto receive the cuttings from said. cutting mechanism during the entingV mechanism including the feed'thereof,

fand mechanism for adjusting the height of both vthe cutting mechanism and said platformwhile retaining the relation between them substantially the same.

f 124. ln a mining machine, the combination with cutting mechanism mounted in an upright plane and having a single unobstructed core-opening therethrough, of a platform having its upper surface in substantially the same plane as the lower surface of the cut produced by said cutting mechanism, and means for dislodging the cut material directly from the mine wall ontol said platform. v .125,111 a miningmachine, the combina- ,tion with core cutting .mechanism having portion emerging from the mine wall dur' ing operation, of o platform extending to a position close to the mine wall and in close proximity to the place where said lcutting mechanism emerges from the mine wall,

means for adjusting the elevation of said platform together with 'Said cutting mechanism, and means for dislodgng the out material onto said platform.

1.26. A niining'maohine comprising a supporting frame, a platform on said frame and extending to a position adjacent the upright face of aiuine wall, corecutting mechanism mounted on said frame and extending therefrom in position to cut a core in the mine wall beyond the forward end of said platforni, and automa-tic means for dislodging to, means for cut material from the mine wall beyond the forward end of said platform and moving Such dislodged material from the mine wall onto said platform.

127. In a mining machine, .the combination With a main frame,'of a supplemental frame mounted for vertical adjustment on said main frame, means on the supplemental' frame for simultaneously cutting connecting lierfs to produce a core of material in its native bed, a platform onsaid supplemental frame having a predetermined relation to said cutting means, means for adjusting the position of said cutting means together with said platform, and means for removing said cut material from the mine wall and sliding the same over -said platform.

128. In a mining machine, the combination with core cutting mechanism, of a platform having a predetermined relation thereadjusting the elevation of said platform together with said Acore cutting mechanism without changing the relative relation between the same, said platform being always in position to receive the dislodged material directly from the positionI occupied thereby in its native bed irrespective of the height thereof from the'mine floor within predetermined limits, and means for sliding the dislodged material over said platform toward loading position.

129. lA mining machine comprising loop chain core cutting mechanism, means for supportingthe saine pivotally in a radial plane, means for operating said chain cutter to cut a core of material in its native bed, a

platform in a plane at right angles to the plane of said core cutting mechanism, a flightv conveyer arranged approximately' in the plane of said platform, and means for removing the cut material from the mine wall over said platform onto said convey'er.

130. In a mining machine, the combina'- tion with loop chainI core cutting mechanism occupying an upright plane, a supporting frame comprising a platform having an arcuate forward edge, means for swinging the loop chain core cutter along the arcuate forward edge of said platform, and means for actuating said loop chain core cutter to emerge from the mine wall adjacent said arcuate edge to scrape the cuttings from the kei-f onto said platform forward edge thereof.

131. In a mining machine, the combination with core cutting mechanism, of a platform for receiving the core, a belt for dis. lodging the core from the mine wall onto said platform, a conveyer for moving the said dislodged material toward loading position, and mechanism coperating with said belt to move the material oft1 said platform onto said conveyer.

132. A mining machine comprising a loop chain core cutter, a platform to receive the material cut by said loop cutter, a. belt, means for operating said belt to move the cut material onto said platform, a conveyer for moving the material into position for loading into mine cars, and means coperating with said belt to guide the cut material onto said conveyer.

133. In mining apparatus, the combination with core-cutting mechanism for severing a section of material from a mine wall, of a platform having a forward edge corresponding to the contourof the cut produced by said cutting mechanism, and means for adjusting the position of said platform.

134:. In mining apparatus, the combination with a loo chain core cutter, of means for feeding sai, cutter over -an arcuate path of travel2 an arc-sliaped device for collecting the cuttings from said chain cutter, and means for adjusting the position of said collecting device.

135. In mining apparatus, the combination with a frame, of a loop chain cutter mounted on said frame, means for operating said cutter in Aan arcuate path, and means continually adjacent said chain cutter for receiving substantially all of the cuttings directly therefrom.

136. In mining apparatus, the combination with loop chain core cuttin mechanism, of means for operating t e same, means for feeding said cutting mechanism in an 'arcuate path, and an extensible platform having its forward edge adjacent the mine wall and corresponding in curvature to the arcuatepath of said cutting mecha@ nism, and adjustable in position to receive loop chain core cutting from the mine wal at I said ycore cutting mechanism including'the feeding thereof 11i an arcuatev path across the minewall, and an extensible platform having an arcuate forward edge to receive "the cuttings from the chain cutter as the latter emerges from the mine wall and adjustable to compensate for the tilting movements of said supplemental frame.

138. In a mining machine, the combination with core cutting mechanism, of means for operating the same including arcuate vfeed thereof, a'pl'atform for receiving material I directly from its cut position in the mine wall throughout the arcuatepath of travel l5 of said cutting inechanisimsaid platform being sectional and foldable'laterally to diminish the width of the mining machine during transportation: i I

139. In a mining machine, the combination with core cutting mechanism, of means I for operating the same including arcuate feed thereof, a supportin frame, a platform slidably connected to said supporting frame and injposition to receive material directly from its cut position in the mine Wallv throughout the arcuate travel of said 4cutting mechanism, and means for adjusting the position of said platform relatively to f said supporting' frame.

140. In a mining machine', the combination with a supporting frame, of an extensible platform mounted thereon and comprising relatively movable sections with the forward section adjacent the mine wall,

mean lfor adjusting the platform with its forwfrd end in receiving positions at various eleva ions adjacent the mine wall between the floor and' roof of the mine chamber, and means mounted on said frame and extending 40 therefrom in position to take material from the mine'wall directly above the forward end of the platform irrespective of the elevation thereof between such floor and roof,

and sliding such material from its position in'the mine wall directly onto the upper surface if said platform.

141. In a miningwmacbine, the combination with cutting mechanism for cutting a core in one operation, 'of means for operating' the same including arcuate feeding thereof, a conveyer, and means in position throughout a range of approximately 180 degrees for guiding cuttings directly from the mine wall and said cutting mechanism onto said conveyer.

In a'mining machine, the combination with` loop chain core cutting mechanism, of means for swingingA the same including the feed thereof, in an arcuate path,

a conveyer,ifaV platform having an arcuate forward p'ortion to coliform to the arcuate feeding path of said cutting mechanism, and a semi-circular beveled guide for directing cuttings from said cutting mechanism onto said conveyer.

143. In a mining machine, the combination with cutting mechanism, of a flat frame,

'a flight conveyer mounted on the upper surface thereof, and an inclined approach 'for the forward portion of said frame to said conveyer, said cutting mechanism moving material over said approach. onto said conveyer.

144. In a mining machine, the combination with a frame having a longitudinalrecess, a flight chain conveyer in said recess,

cutting mechanism for'producing a core in one operation, and means for guiding the cuttings from said cutting mechanism into' said recess for various positions of saidcutting mechanism.

145. In mining apparatus, the combination with cutting mechanism, of a platform for receiving the cuttings fromsaid cutting mechanism, a conveyer, and a belt mounted vertically on said platformfor moving said cuttings from said receiving device onto said conveyer. v 4

146. In mining apparatus, the combination with a loop chain cutter, of a conveyer,

a platform for receiving the cuttings from said chain cutter, means for adjusting the position of said platform relatively to said chain cutter, and a vertical belt for moving the cuttings onto said conveyer.

147.,In miningl apparatus, the combination with a swinging arm, of a flexible device connected to said arm, means for oving said arm to extend said` flexible device into a lerf in a mine Wall, a winding drum for exerting a pull on said flexible device,

andmeans for holding said winding drum in a predetermined position.

148I'n mining apparatus, the combination'witli a chain cutter and means for operating the same, of rope `drum gearing for 'advancing the chain cutter while the same means for exerting a pull on said flexible device to act on the material in .its cut posi- ,tion in a mine wall to break said material and slide the same over said platform onto said conveyer while said flexible device continues to extend above the plane of said platform.

150. A mining machine comprising a drum, and power mechanism for taking material directly from its position in a mine Wall and movingit against said drum to 'break said materlal.

, 151. A mining machine comprising a drum, and ymeans spaced apart from said drum but 'c operating therewith for taking material directly from amine wall and breakin .up the same. i

-152. mining machine comprising a frame, a cylinder mounted on said frame formovement clrcumferentially, and means cooperating with said frame and cylinder for taking material ldirectly from a mine wall and breaking up the same. 153. A mining machine comprising a su'p-` porting frame, of a Swinginl frame pivoted thereto, and'having a spi er arm hub, a flexible device connected to said lswinging frame, and means for operating said flexible 2 0 deviceby taking material directly from its native position 1n a mine wall and pressing it against said hub to break up said material. 154. In mining apparatus, the combinaltion with'a supportingl frame, of cutting 2:5 mechanism mounted thereon, a flexible device mountedon said frame, a conveyor ha vinlgla recelvmg portion Iabove the plane 1n w A'ch the flexible de vlce extends, means for kerting a pull on said flexible device to act `S0 i n. the material in its cutposition in a mine .Wall tol break said material from themme Ml wall, and means coperating with said flexi- ,fl lble device for directing the broken material l onto said receiving portion of said conveyer. i 85 I "tion-with cuttin mechanism, mounted on a frame, axflexib e device connected to 4the vouter end of said frame,`locl iing mechanism .for holding said frame ina predetermined position, a winding drum for said flexible device, means for operatin said winding 'drumto exert a pull o n sai flexible device when said frame. is locked in the said predetermined position, and loading apparatus 45 for movingthe material back away from the mine wall. y

j 156. In -mining apparatus, the combina'- tion with a chain cutter, of a frame for caring said chain cutter having an opening r. 59 therethrough to permit the chain cutter to -extend around thematerial cut from the minewall, means for swinging said frame 'and chain cutter laterally to advance the same during the cutting operation, a flexible device. connected to the outer end of said frame, latchimechanism for locking the lframe and vchain cutter against being re- 1 tracted after the chain cutter reaches the limit of travel,-a winding drinn,` a platform, "'og'means for operating said winding drum to exert a pull on said flexible device to break up the material out from the mine' wall by.

Said chain cutter and move said material ntc said platform, a lever for releasing said '66 latch mechamsm, a cylmdrlcal drum carried '1 55. In mining apparatus, the combina.

' loading position.

by said chain cutter frame and movable therewith during retraction thereof to direct the broken up material toward the rear of said platform, and a conveyer for receiving the broken vdown material as :it is moved toward the rear and for moving said material farther toward the rear for the purpose of loading into mine cars.

157. In mining apparatus, the combination with a loop chain core cutter, of means for operating the same to dislodge a crescent-shaped block of material from a mine wall, means for bodily moving said block of material from its cut position in the mine wall, a cylindrical drum coperating with said moving means for breaking upsaid block of material into smaller sections, and

means for receivingsaid smaller sections of operating with said flexible device for breaking up said block of material into" smaller sections and directing the same to-said loading apparatus.

159. A mining and loading machine comprising a supporting frame, a loop chain Acore-cutter mounted thereon, means for operating said core-cutter by swinging the sameY relatively to s aid frame, and power mechanism mounted on said frame and extending therefrom in position to act on the core immediately after beingcut to dislodge the Same and take the dislodged material directly from the space originally occupied thereby in the mine wall and move it toward 160. In mining apparatus, the combination with a loop chain cutter, of a platform,

a conveyor, and means. including a vertical belt for dislodging the material from the mine Wall breaking up the material, and moving it over said platform onto said conveyer.

161. In mining apparatus, thecombination with a chain cutter, of means for operating the same, means for feeding said chain cutter substantially at right angles to the plane thereof to cut a core of material in a mine wall, power mechanism connected to said chain cutter for breaking up the material out thereby, and automatic mechanism