US1489583A - Mining machine - Google Patents

Description

E. c. MORGAN I MINING MACHINE April 8 1924.-

Filed Sept. 5, 1914 5 Sheets-Sheet? 1 April 8 1924. 1,489,583

c. MORGAN MINING MACHINE Filed Sept. 5. 1914 5 Sheets-Sheet 3 566C769 Edna/ad April 8 1924. 1,489,583

E. c. MORGAN MINING MACHINE Filed Sept. 5, 1914 5 Sheets-Sheet 5 IZWMWWWWWW Patented Apr. 8, 1924.

UNITED STATES 1,489,583 PATENT OFFICE.

EDMUND C. MORGAN, OF CHICAGO, ILLINOIS; OLIVE EUGENIE MORGAN EXECUTRIX OF SAID EDMUND C.

MORGAN, DECEASED.

MINING- MACHINE.

Application filed September 5, 1914. Serial No. 860,369.

T 0 all whom it may concern:

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

My invention relates to mining machines and has more particular reference to improvements in mining machines of the type which sever or cut complete blocks or sections from the wall of a mine.

One of the objects of my invention is to provide an improved machineof this character which will be simple, durable and reliable in construction and effective, efiicient and rapid in operation. Other objects of my invention Wlll appear hereinafter.

Referring to the accompanying drawings;

Fig. 1 illustrates in top plan view a mining machine embodying my invention, said machine being in. the act of cutting a section of coal from a wall of a mine.

Fig. 2 is a view in side elevation of said machine.

Fig. 3 is a longitudinal sectional view substantially on the line 3-3 of Fig. 1.

Fig. 4c is a view inrear elevation of said machine.

Fig. 5 is a transverse view partly in section 011 the line 5-5 of F i 1.

Fig. 6 is a detail vertica section of the I adjustable of Fig. 1.

Fig. 7 is a partial top plan view of a modification of my invention involving means for breaking the severed section into smaller sections; and

Fig. 8 is a detail view part1 in section substantially on the line 88 o Fig. 7.

The machine shown in the drawings is designed to completely out or sever a sec tion, preferably a crescent shaped section, of coal from thewall of a mine in one operation and carry the said severed section beyond or away from the wall in position to be broken' into smaller sections and dispedestal support on the line 6-6 charged from the machine or otherwise disposed of according to the particular circumstances. supported upon a base'or frame A. This base has two upstanding arms or members 1 at its rear end which carry jacks B by which the machine may be anchored or secured against rearward movement while the This machine in general is cutting operations are going on. These jacks or anchoring means may be of any suitable type. In the drawings they are shown in the form of threaded members 2 pivoted at 3 on the arms 1 and having members 4 telescoped therewith. The upper ends 5 of these members 4 are sharpened to bite into the wall of a mine and the adjustment thereof is obtained by means of hand wheels 6 threaded onto the member 2. Near its forward end this base also has a central upstanding pedestal 7 which supports the entire machine. This pedestal is shown curved in Figs. 2 and 3 on an arc the center of which coincides with substantially the rear end of the machine so that the cutting mechanism and other parts may be bodily swung or moved about the said point as a center by means of ordinary portable jacks for the purpose of increasing the cutting range of the machine. This curvature of the pedestal is clearly shown in Fig. 3. Referrin to Figs. 6 and 7 which show a modification provided with means for moving the cutting mechanism on a vertical pedestal 7' it will be seen that the sides of the pedestal are grooved andthat a sleeve member 8 surrounds this pedestal and is provided with suitable curved guideways conforming to the pedestal so that the sleeve may slide vertically on the pedestal. In one of the grooves of the pedestal the sleeve 8 has an instanding elongated lug 9 which is threaded and through which a vertical threaded screw or rod 10 passes. This rod has a bearing at its upper end in a lug 11 on the pedestal and its lower end has a sprocket wheel 12 which is driven from the rear end of the frame (see Figs. 1 and 2) by means of another sprocket 13 and a chain 14. This rear sprocket 13 has a bevel gear which meshes with and is driven by another bevel gear 15 mounted on ashort shaft 16. The shaft 16 is constructed in any simple way so that power may be applied to it to drive the chain and hence rotate the rod or threaded shaft 10. By this means the sleeve 8' and hence the entire cutting machine may be raisedand lowered on the pedestal.- A compression spring 17'. is positioned in the other groove of the pedestal and is interposed between the base A and a lug 18 on the sleeve 8. This spring acts as a counter balance and serves to take a great deal of the weight of the machine from the the spring 17 being engaged by the cross piece 18 which is fixed to the sleeve 8 in the manner shown in Fig. 6 and extends into one of the lateral grooves of the arcuate guide 7, the inner wall of the groove being shown in elevation. Surrounding this sleeve 8' and rotatable thereon is another sleeve 20 which rests upon a bearing ring 21 at its lower end. This bearing ring is flanged and is supported by a flange 22 surrounding the.

lower end of the vertically movable sleeve 8.

The sleeve 20 which forms a part of the rotatable frame of the machine has a large platform 23 which it supports at its lower end and this platform, for substantially an arc of slightly less than 180, is extended to a greater diameter to form a segmental platform or support 24 for the sections of coal after they'have been severed from the mine wall and broken. This platform is of course rotatable with the sleeve 20 and also forms a conveyor or carrier for the sections after they have been severed from the mine wall. A vertical rib or flange 25 concentric with the center of rotation rises from the edge of the platform 23 and serves to prevent the co from entering the o crating parts. On the upper end of the s eeve' 20 and rotatable on the sleeve 8 is a large head 26 which has a frame member 27 extending rearwardly therefrom. This frame spreads at its rear end to substantially the width of the base A and has two depending portions 28 which suspend at their lower ends a horizontal fixed platform 29. The inner edge of this fixed platform 29, as clearly shown in Fig. 1, is curved to conform to the curvature of the segmental rotary support 24 and is flush with the surface thereof so as to form, in a sense, a fixed continuation of said segment upon which the sections of coal may be moved as they leave the support or platform 24. This platform 29. and the frame 27 and head 26 do not rotate since the platform is substantially of a width to fit between the two upstanding arms 1 of the base. This effectively holds said platform 29 from rotating and still permits vertical movement when the machine is adjusted on the pedestal. On the platform 23 is a driving motor 30, preferably an electric motor, the shaft of which carries a worm 31 enclosed in a suitable casing 32 for protect-ion against grit and dirt. This worm drives a worm wheel 33 (Fig. 5) also enclosed in a suitable casing. The worm wheel is carried on a transverse shaft 34 mounted in suitable journals on the frame platform 23 and this shaft has a worm 35 at its other end which drives a worm wheel 36 which is loose upon a vertical shaft 37 Itis adapted to be connected with the shaft or disconnected therefrom by means of any suitable clutch mechanism. In the drawings I have shown a simple form of clutch comprising a member 38 keyed to but slidable on the shaft 37. One side 39 of this clutch member (Figs. 2 and 4) is in the -form of a cone which cooperates with a correspondingly shaped socket in the face of the worm gear 36 so as to form a simple cone clutch. Thus when the clutch member 38 is shifted from a neutral position int engagement with the worm gear 36 it connects the worm gear 36 with the shaft 37. The shaft 37 carries a spur gear 40 at its upper end which meshes with a gear 41 carried by the head 26. In this manner the platform 23 may be bodily rotated about the pedestal as a center. This train of driving connections from the shaft 34 constitutes the higher speed drive which is used preferably to uickly rotate the platform 24 and carry t e severed sections C of coalaway from the mine wall after the sections have been severed. During the cutting operation it is desirable that the platform 24 as well as the cutting mechanisms be rotated at a slower rate of speed and for this reason I provide a second train of con nections between the shafts 34 and 37. This train of connections comprises a worm 43 on the shaft 34 which drives a worm gear 44 on a shaft 45. This shaft 45 is journaled in an upstanding bearing standard 46 on the platform 23 and also carries a worm 48 which meshes with and drives a worm gear 49 loose on vthe shaft 37 This worm gear 49 is also adapted to be connected with or disconnected from the shaft 37 by means of the clutch member 38 and I pre fer that in this case the clutch member 38 should operate to connect the gear 49 in a more positive manner than by means of the cone clutch previously described; For this reason I provide cooperating teeth 50 on the adjacent faces of the clutch member 38 and the worm gear 49 and when the clutch member 38 is shifted into engagement with the gear 49 it drives the shaft 37 and gear 40 at a lower rate of speed. In order that the clutch member 38 may be conveniently shifted into its neutral or other two positions I provide'a hand lever 51 for this purpose. This lever is pivoted at 52 on an upstanding arm on the platform 23 and one of its ends cooperates with the clutch member 38 for shifting it. In the present structure I prefer to use a cutting mechanism which will in one operation completely out or sever a section from the wall of a mine. This cutting mechanism is supported by the platform 23 and sleeve 20 and hence rotatable therewith about the same center. This cutting mechanism is in the form of a continuous 100p chain having a series of bits or cutting knives56 projecting from its edge and adapted to travel around the edge of an open rectangular frame 57. The sides of this frame around which the chain travels are slightly less in thickness than the kerf cut by the chain so that the frame will properly enter the kerf and at the same time sup ort the cutting chain as shown clearly in igs. 1, 2 and 3. This chain also travels around a sprocket 58 by which it is driven and the sprocket 58 is loosely mounted on a shaft 34 (Fig. 5). It isadapted to be connected with or disconnected from said shaft for the purpose of starting and stopping the chain, by means of any Suitable clutch mechanism.

In the drawings I have shown a clutch member 59 keyed to but slidable on the shaft 34 and having teeth adapted to engage corresponding teeth on the face of the sprocket 58. This clutch is shifted by means of a hand lever 60 pivoted on an outstanding lug 61. The lug 61 is in this case formed on a grooved or channelled member 62 outstanding from the sleeve 20 of the frame. The member 62 serves as a support for the cutting mechanism frame 57. The cutting mechanism frame 57 has an offset tongue or extension 63 which is slidably supported in the grooved or channelled member 62. This arrangement perm-its the chain to be tightened or loosened or links removed or replaced as desired. In order that this adjustment may be conveniently secured the tongue 63 carries an outstanding lug 64 through which a bolt 65 passes. The inner end of the bolt is fastened to the sleeve 20 in any desired manner. Nuts ,66 are positioned on either side of the lug 64 for fastening the frame in its adjusted position.

' The machine shown in the drawings is tion of coal from the machine.

adapted to rotate in one continuous direction and cut a crescent shaped section or block from the wall of the mine. The plat form or support 24 follows the cutting mechanism and supports the section as it is being cut. After the section is cut the continued rotation of the cutting mechanism and platform 24 in the same direction but preferably at a greater speed, carries the cutting mechanism around to begin the next cutting operation and also positions the severed section in the rear of the machine away from the mine wall. Here the machine may be stopped long enough to remove the see- In order to facilitate the removal of the coal from the machine, I provide mechanism which breaks or divides the section into a lurality of smaller sections capable of being handled more easily and in themselves occupying less room. In the present case this breaking mechanism is in the form of a ram Dw adapted to press outwardly against the section of coal and break it. As shown in Fig. 7 the platform 24 carries the crescent shaped section around to the position where the two depending members 28 of the frame 27 are in position to engage and hold the section adjacent its end portions. Midway or intermediate of these points at which the section is held the ram D applies pressure outwardly and breaks the coal. This ram in the present structure is in the form of a ramming head v carried on the end of a. bar 71. The bar 71 is pivotally connected at one end of an arm 72. This arm is fastened to a vertical shaft 73 which carries at its upper end a short arm 74. The arm 74 has a roller 75 on its end which, when the platform 24 has carried the section of coal around to about the position'where it is to be broken, is adapted to engage the depending end 76 of a rock shaft 77 on the frame 27. A further rotary movement of the machine frame causes the arm 72 to be rocked until the ram has been withdrawn to about the position shown in dotted lines. At this point the end of the arm 74 snaps, so to speak, past the end 76 of the rock shaft and frees the ram. A powerful tension spring 88 is connected between the end of the arm 72 and a fixed point on the platform. This is placed under tension by the rotation of the arm 72 and when the'arm 74 is released the spring acts upon the ram and causes it to impart a powerful blow to the section of coal. The rock shaft 77 is provided with a spring 78 normally keeping its end 76 in position to engage the arm 74. This rock shaft has an upturned end 7 9 by which its tripping end 76 may be rotated out of the path of the arm 74 when it is not desired to use the breaking mechanism.

At the end of the platform 24 is an extension member 85 which is substantially flush with the surface of the platform 24. This section is are-shaped and its edges fit in suitable grooves which serve to guide it. The end of this section has an upstanding crosspiece 86 which extends inwardly to a point above the platform portion 23 and this inner end of the member 86 is connected to a spring 87. The other end of the spring 87 is anchored on the platform 23 so that the extension 85 and end member 86 will be yieldingly held normally in its non-extended position. This arrangement provides a suitable support for the end portion of the section of coal.v In the event that the end of the section should project beyond the end of the platform 24, the extensible section 85 will thus accommodate itself to the amount which the section of coal projects beyond the platform and in addition the end member 86 of this section serves to abut the end of the section of coal and insureits lltl Cal

remaining on the platform while the platform is rotating into the position where the coal is to be removed.

I claim:

1. In a mining machine, the combination with a frame, of cutting apparatus mounted on said frame for cutting a core of material in its native bed, means on said frame and extending under the core for carrying such core from the position assumed thereby after being dislodged into a predetermined position away from its original position, and means on said frame for breaking said core into smaller sections in such predetermined position.

2. In a mining machine, the combination with an arcuate standard, of supporting framework, core-outing mechanism mounted thereon for swinging movement on an upright axis and having an unobstructed coreopening therethrough, means mounted on said frame-work and movable relatively thereto under the core of cut material in position to receive the severed section directly from its original position in the mine wall and carry the dislodged material thereon 1 away from the mine wall when said receiving means is moved relatively to said framework away from the mine wall, means for operating said core-cutting mechanism including the feed thereof, and means for effecting bodily arcuate adjustment up and down of said framework together with said core'cutting mechanism along said standard.

3. In a mining machine, the combination with a supporting frame, of cutting mechanism mounted on said frame, means for operating said cutting mechanism including arcuat feed thereof for severing a block of material from a mine wall adjacent said supporting frame, rotatable mechanism mounted on said frame in position to follow said cutting mechanism for receiving the block of material intact and remove the same in an arcuate path from the mine wall along said frame toward the rear portion thereof, and means mounted on said frame in position to operate on the block of material after being removed back from the mine wall for breaking such block of material into smaller )arts. I 4. The combination of rotary cutting mechanism for dislodging a block of material from the wall of a mine, rotary mechanism following said cutting mechanism for removing the severed section in a circular path, means operable after the section is removed for breaking the section into smaller parts, and means for bodily adjusting said mechanisms and breaking means with respect to the mine wall, and a frame for supporting the aforesaid parts in co -operation in a unitary structure. I

5. The combination of rotary cutting mechanism for severing a section from the wall of a mine, rotary mechanism following said cutting mechanism for receiving the material from said cutting mechanism and for removing the severed section in a circular path to a predetermined position, and ramming mechanism for breaking the section into smaller sections while in such pre determined position.

6. In a mining machine, the combination with core-cutting mechanism rotatable in one direction for cutting a core in the wall of a mine, of rotary supporting mechanism for the core following the cutting mechanism and adapted to carry the severed core away from its native position in the mine wall, and mechanism comprising a ram in position to act on said core after being moved away from the mine wall to break said core into smaller sections.

7 The combination of cutting mechanism for severing a section from the wall of a mine, rotar supporting mechanism for the section fol owing the cutting mechanism and adapted to carry the severed section away from the mine wall to a predetermined position, a ram operable against the section in such predetermined position for breaking the section into smaller sections, a common supporting standard for said mechanisms about which said mechanisms rotate as a center, and means for raising and lowering said mechanisms on said standard.

8. The combination of a rotary cutting mechanism arranged to entirely sever a crescent-shaped section from the wall of a mine, a rotary support for the section following said cutting mechanism and movable in a. circular path and adapted to carry the section away from the mine wall, means for holding the section at se a-rated points, and a ram adapted to apply pressure to the section intermediate said separated points to break the section.

9. The combination of cutting mechanism rotatable in one continuous direction and operable to sever a crescentshaped section from the wall of a mine, a supporting platform rotatable therewith following said cutting mechanism and adapted to carry the severed section away froin the mine wall, a common supporting standard for supporting said platform and cutting mechanism at their centers of rotation, and a yielding abutment at the rear end of said platform.

10. The combination of cutting mechanism rotatable in one continuous direction and operable to sever a crescent-shaped section from the wall of a mine, a supporting platform rotatable therewith following said cutting mechanism and adapted to carry the severed section away from the mine wall, and means for arcuately adjusting said cutting mechanism in elevation.

11. In a mining machine, the combination with a base frame, of a supporting frame,

an upright core-cutter pivotally mounted on said frame for arcuate feeding movement across a mine wall in a general horizontal direction, a supporting platform pivotally mounted on said frame for rotation about substantially the same center as the center of rotation of said core-cutter, means for operating the supporting platform by moving the same arcuately relatively to said frame to carry the core in an arc approximately horizontally back from the mine wall, and means for arcuately adjusting the elevation of the mining machine as a whole including said core-cutter while retaining the rear portion of said supporting frame at substantially the same elevation relative to said base frame.

12. In a mining machine, the combination with cutting mechanism, of a support for the dislodged material, a main support for said cutting mechanism and for said firstnamed support, means for moving said firstnamed support in an arc concentric with the feed of said cutting mechanism and following the latter in such arcuate path, and means for guiding said cutting mechanism and said first-named support as a Whole arcuately in elevation on said main support when the height of the cutting mechanism is adjusted.

13. In a mining machine, the combination with cutting mechanism having a horizontal cutting stroke and a support for the severed section of mine wall rotatable about a common center, of a pedestal supporting said cutting mechanism and said support at their center of rotation, said cutting mechanism and said support being bodily movable on said pedestal along van upright arc, and means for operating said cutting mechanism and support for dislodging sections of material from a mine wall and carrying them back from the mine wall at various heights between the floor and roof of the mine chamber in accordance with the adjustments on said pedestal.

14. In a mining machine, the combination with a main frame, of a supplemental frame guided on said main frame, cutting mechanism bodily rotatable on said supplemental frame, means for operating said cutting mechanism including feed thereof in a general horizontal direction to sever a section of material from the wall of a mine, and counter-balancing mechanism connected to said supplemental frame adjacent the cutting mechanism for facilitating the adjustments of said supplemental frame and said cutting mechanism relatively to said main frame to various heights.

15. In a mining machine, the combination with a main frame, of a supplemental frame mounted on said main frame for arcuate movement to various elevations, cutting mechanism mounted on said supplemental frame for movement in an arc in a general horizontal direction relatively to said supplemental frame to sever a section from the wall of a mine, a support for the severed section in its entirety following said cutting mechanism and bodily movable therewith to extend under the severed section, and a yielding abutment at the rear end of said support.

16. The combination of a cutting mechanism bodily rotatable and arranged to sever a section from the wall of a mine, a support for said cutting mechanism, means for bodily moving said cutting mechanism on said support in an arc the plane of which is transverse to the plane of rotation of said cutting mechanism, a support for the severed section following said cutting mechanism and bodily movable therewith, and an arc-shaped pedestal supporting said cutting mechanism and support at their center of rotation and serving as a guide for the bodily movement thereof.

17. The combination of a frame, an arcshaped pedestal supporting said frame and on which the frame is bodily movable in an arcuate path, means for rotating said frame about said pedestal as a center in a plane transverse to that in which the frame bodily moves, a cutting mechanism on said frame rotatable therewith and arranged to sever a crescent-shaped section from the wall of a mine, and a curved platform on said frame rotatable therewith and disposed to follow the cutting mechanism to support the severed section and carry it away from the mine wall.

18. The combination of a frame, an areshaped pedestal supporting said frame and on which the frame is bodily movable in an arcuate path, means for rotating said frame about said pedestal as a center in a plane transverse to that in which the frame bodily moves. a cutting mechanism on said frame rotatable therewith and arranged to sever a crescent-shaped section from the wall of a mine, a curved platform on said frame rotatable therewith and disposed to follow the cutting mechanism to support the severed section and carry it away from the mine wall, and ramming mechanism operable against the section while resting on said curved platform after it has been removed from the mine wall for breaking the section into parts.

19. In a mining machine, the combination with a supporting frame, of cutting mechanism mounted thereon for completely cutting out from a mine wall a section of material, means for operating said cutting mechanism, means movable relatively to said frame and extending under the cut material and into position for moving the section of material intact entirely away from the mine wall, and apparatus mounted on said frame in position for breaking up the section of material after being entirely removed from the mine wall.

20. In a mining machine, the combination with a base frame having an arcuate standard, of a supporting frame mounted thereon for arcuate adjustment in elevation on said standard, core-cutting mechanism mounted on said supporting frame, means for operating said core-cutting mechanism to cut a core in a mine wall in one operation in a general horizontal direction across said mine wall, a platform following and moving with said core-cutting mechanism for receiving material cut from the mine wall by said cutting mechanism as soon as dislodged, means mounted on said frame for moving said platform relatively to said frame to cause the same to carry the dislodged material back from the mine wall, and means, for arcuately adjusting said core-cutting mechanism in elevation.

21. A mining machine comprising a base frame having an arcuate standard, a supporting frame, cutting mechanism mounted on said supporting frame, a segmental platform for receiving the material cut by said cutting mechanism, means for moving said platform to the rear portion of said frame spaced from the mine wall, to carry the dislodged material from the mine wall to the rear end of said frame, and means for arcuately moving the supporting frame in elevation along said standard relatively to said base frame.

22. In a mining machine, the combination with loop chain core-cutting mechanism, of a platform approximately in the plane of the lower run of sad loop chain core-cutting mechanism in position for receiving the cut material from the mine wall, means for arcuately adjusting the height of the whole mining machine including said core-cutting mechanism and said platform while said platform is maintained approximately in the plane of the lower run of said core-cutting mechanism, means for operating said core-cutting mechanism to cut a plurality of cores across the mine wall one above another at the various heights to which said loop chain core-cutting mechanism is adjusted, and apparatus for moving said platform to cause the same to carry the material received thereby back from the mine wall.

23. In a mining machine, the combination with an arcuate standard, of a supporting frame, loop chain core-cutting mechanism carried thereb for swinging movement on an upright axls, a platform carried by said frame approximately in the plane of the lower run of said loop chain core-cutting mechanism in position for receiving material directly from the mine wall as dislodged by such cutting mechanism, said cuttlng mechanism and said platform being arcuately adjustable along said standard to various heights to enable said cutting mechanism to cut cores one above another, and

means for operating said platform to cause the same to carry the dislodged material back from the mine wall.

24. A mining machine comprising an arcuate standard, a supporting frame, loop chain core-cutting mechanism for entirely cutting out from a mine wall adjacent said frame a crescent-shaped core of material, means for operating said loop chain corecutting mechanism, a platform connected to said frame for receiving all of said core directly from its out position in the mine wall, means for moving said platform together with the core thereon back from the mine wall, and means for arcuately adjusting the elevation of said core-cutting mechanism along said standard.

'25. In a mining machine, the combination with an arcuate standard, of ker'f-cutting mechanism for cutting spaced-apart kerfs and a communicating kerf back of a core of material in a mine wall, means for operating such kerf-cuttin mechanism to com.- pletely sever a core of material from a mine wall, a platform for supporting the core of material intact until after the entire core is completely severed from the mine wall, means for operating said supporting platform to move back from the mine wall said core of material in its entirety, and means for arcuatel adjusting the elevation of said cutting mec anism along said standard.

26. In a mining machine, the combination with an arcuate standard, of cutting mechanism, means for operating said cutting mechanism to entirely cut out from a mine wall a section of material, a platform following said cutting mechanism to extend under a section of material as it is being cut in position for receiving the cut material from above, means for effecting movement of said receiving platform to cause the same to carry into loading position the section of material resting freely by -avity thereon, and means for arcuately ad usting the elevation of said cutting mechanism.

27. The combination with core-cutting mechanism, of a platform followingthe same and movable therewith to receive the core of material cut from the mine wall by, said core-cutting mechanism, means for arcuately adjusting the whole machine bodily including said core-cutting mechanism in elevation, and means for simultaneously restoring said cutting mechanism to initial position preparatory for another out and moving said platform to cause the same to carry the core of material intact back from the. mine wall.

28. In a minin machine, the combination with cutting mec anism, of means for actuating said cutting mechanism, mechanism for slowly feeding said cutting mechanism forward during its actuation, a device for receiving the material cut from the mine wall by said cutting mechanism, and apparatus for effecting the quick return of said cutting mechanism to initial position and at the same time returning said receiving device to move the material thereon back from the mine wall.

29. In a mining machine, the combination with an arcuate standard, of aloop chain cutter, mechanism for operating the same to entirely sever from the mine wall a crescentshaped section of material, a segmental platform following said loop chain cutter and movable therewith to receive the said crescent-shaped section of material, means for moving said segmental platform to cause the same to carry said section of material back from the mine wall, and means for arcuately adjusting in elevation with said outter and said platform along said standard.

30. In a mining machine, the combination with a loop chain cutter, of means for op.- erating the same to cut from a mine wall a crescent-shaped section of material, a segmental platform following and movable with said loop chain cutter to receive the said section of material and support the same, a segment-a1 guiding strip carried by the inner portion of said platform, means for moving said platform together with said guiding strip to carry said section of material back from the mine wall to a predetermined position, and a yielding abutment at the rear end of said platform.

31. In a mining machine, the combination with cutting mechanism, of means for operating said cutting mechanism to entirely sever a section of material from a mine wall, a platform for receiving said section of material directly from the mine wall, and a cushioned abutment for one end of said section of material and carried by said platform.

32. In a mining machine, the combination with a loop chain cutter, of means for operating the same to cut out from the mine wall a crescent shaped section of material, a platform for receiving said section of material from its out position in the mine wall, a resilient abutment on said platform for one end of said section of material, and means for removing said platform to carry the said1 section of material back from the mine wal 33. In a mining machine, the combination with a main frame, of a supplemental frame mounted for its sole support on the forward portion of said main frame, cutting mechanism carried by said supplemental frame, means for operating said cutting mechanism, a platform carried by said supplemental frame for receiving the material cut from a mine wall by said cutting mechanism, means for moving said. supplemental frame to cause said platform to carry the cut material back from the mine wall, and means for arcuately adjusting the elevation of said cutting mechanism.

34. In a mining machine, the combination with a main frame, of a supplemental frame mounted for its sole support on the forward portion of said main frame for adjustment relative thereto on a horizontal axis, a loop chain cutter, a motor mounted on said supplemental frame, operatingconneotions between said motor and said loop chain cutter, a platform mounted on said supplemental frame to follow said loop chain cutter and move therewith to receive the material cut from a mine wall by said loop chain cutter, and means for moving said platform to cause the same to carry the severed section of material back from the mine wall.

35. In a mining machine, the combination with a main frame, of cutting mechanism for entirely severing from a mine wall a section of material, a supplemental frame pivotally moimted on said main frame on a horizontal axis and having a circular platform nism, means for actuating said cutting mechanism, mechanism for feeding the cutting mechanism forward together with said platform, and apparatus for returning said cutting mechanism to initial position while moving said platform to cause the same to carry the severed section of material back from the mine wall.

36. In a mining machine, the combination with a main frame, of a supplemental frame mounted for its sole support on the forward portion of said main frame, a loop chain cut-- ter carried by said supplemental frame, means-carried by said supplemental frame for operating said chain cutter to sever a section of material from the mine wall, a segmental extension of said supplemental frame to form a platform to receive and support the severed section of material, and means for moving said platform to carry saidl section of material back from the mine wa 37. In a mining machine, the combination with a portable frame, of a supplemental frame mounted on said portable frame for up and down adjustment relatively thereon, core-cutting mechanism mounted on said supplemental frame, means for operating said core-cutting mechanism including aroua-te feed thereof relatively to said supplemental frame, and yielda-ble supporting mechanism between said supplemental frame and said portable frame back of the corecutting mechanism.

38. In a mining machine, the combination with a portable frame, of a supplemental frame guided on an upright pedestal in up and down directions on said portable frame, core-cutting mechanism. mounted on said supplemental frame, means for operating said core-cutting mechanism including arouate feed thereof in a general horizontal di-- rection at the various heights of said supplemental frame on said portable frame, and a yieldable mounting between said supplemental frame and said portable frame and adjacent said pedestal.

39. In a mining machine, the combination with two frames relatively movable, of cutting mechanism mounted on one of said frames, means for operating said cutting mechanism, guiding mechanism between said frames, and an adjustable yieldable supporting connection between said frames and associated with said guiding mechanism.

40. The combination with a frame, of a second frame, cutting mechanism mounted on said second frame, means for operating said cutting mechanism, a guide post on said first named frame and connected to said second frame to prevent lateral movement thereof without interfering with upward and downward adjustment thereof, and means for adjusting the height of the forward portion of said second frame, and a yieldable support for said second frame associated directly with said guide post.

41. In a mining machine, the combination with core-cutting mechanism, of means for operating the same including arcuate. feed thereof, a frame for supporting said cutting means and said operating means, an additional frame, a curved post extending from said additional frame through said supporting frame, and means for adjusting the position of said supporting frame on said post to vary the height of said core-cutting mechanism.

42. In a mining machine, the combination with a main frame, of a supplemental frame mounted on said main frame for up and downar'ljustment relatively thereto, a loop chain core-cutter, an auxiliary frame for said core-cutter and rotatably mounted on said supplemental frame, means for operating said loop chain core-cutter including its actuation and the partial rotation of said auxiliary frame on said supplemental frame, a guiding post on said main frame and connected to said supplemental frame, means for adjusting the height of said corecutter by varying the height of said supplemental frame on said post, and a spring extending along said post in position to serve as a yielding assistant-support for said supplemental frame on said main frame.

43. In a mining machine, the combination with cutting mechanism, of means for operating the same, a frame for supporting said cutting mechanism and said operating means, an additional frame, a guide post extending from said additional frame and connected to said supporting frame, a rod mounted onsaid additional frame and said guide post and screw-threaded through a threaded opening in said supporting frame, and means extending to a position at the rear of said additional frame for rotating said rod to adjust the height'of said supporting frame together with the cutting mechanism mounted thereon.

14. In a mining machine, the combination with cutting mechanism, of means for operating the same, a supporting frame, an additional frame, a spring connected between said additional frame and said supporting frame, a guide post between said frames, a screw-threaded rod connected between said frames, and means for operating said screw-threaded rod to adjust the height of said supporting frame and said cutting mechanism while the weight of said supporting frame and the parts carried thereby is relieved by said spring. Y 45. In a mining machine, the combination with kerf-cutting mechanism, of means for operating the same, a portable main frame, means for holding said portable framein fixed position between the floor and roof of a mine chamber, a supplemental frame, an upright guiding post mounted on said portable frame and extending through said sup plemental frame, a spring between said portable frame and said supplemental frame, mechanism associated with said portable frame and said post for adjusting the height of said kerf-cutting mechanism, and means for operating said adjusting mechanism from the rear of said portable frame.

46. A mining machine comprising a frame, core-cutting mechanism mounted on said frame and extending into position forsevering a crescent-shaped section of material from a mine wall adjacent said frame, means mounted on said frame in position for mow ing the crescent-shaped core of material in its entirety back from the mine wall along said frame, and mechanism mounted on said frame in position to act independently of said moving means for breaking up said section of material after being moved back from the mine wall and while still supported by said frame.

47. A mining machine comprising a supporting frame, cutting mechanism mounted thereon. means for operating said cutting mechanism including feed thereof relatively to said frame to entirely out from a mine wall a section of material, power operated mechanism. mounted on said frame and movable relatively thereto for receiving said section of material substantially from its native position in the mine wall and moving 1,4.s9,uas

from the mine wall said section of material from the position originally occupied thereby, and ramming mechanism mounted on said frame for breaking said section into smaller sections after it has been moved back from the mine wall.

49. A mining machine comprising a supporting frame, cutting mechanism mounted thereon, a device on said frame for receiving the cut material, and mechanism mounted on said frame in position for striking the material a hammer-blow to break it into pieces.

50. A mining machine comprising a supporting frame, cutting mechanism mounted on said frame for severing a section of ma terial from a mine wall adjacent said frame, means mounted on said frame and extending therefrom into position for moving back said section of material from substantially its native position in the mine wall along said frame, and a device mounted on said frame in position for striking the material a hammer-blow to break it into a number of smaller sections.

51. A mining machine comprising a supporting frame, cutting mechanism mounted on said frame in position for cutting a section of material from a mine wall adjacent said frame, means rotatable relatively to said frame for receiving the section of material from its cut position in the mine wall, mechanism carried by said receiving means for striking the section of material a hammer blow substantially in the middle of such section, and mechanism for effecting the operation of said striking mechanism.

52. The combination with mechanism for cutting a block of material from the mine wall. of means for operating the same, a rotary support for said cutting mechanism, means for carrying said block of material back from the mine wall, mechanism set by movement of said rotary support for striking the said block of material a hammer blow to breakit into a smaller number of pieces. and means for releasing said ham- Iner blow mechanism.

53. A mining machine comprising a supporting frame, of cutting mechanism mounted on said frame for cutting a core of material in a mine wall adjacent said frame, a reciprocating breaking device mounted on said frame in position to exert a hammer blow on the cut material, and means on said frame for operating said breaking device to reduce the cores into smaller sections.

54. A mining machine comprising a supporting frame, of cutting mechanism mounted on said frame in position for cutting a section of material from a mine wall adjacent said frame, a reciprocable striking tool mounted on said frame in a position spaced back from the mine wall, a spring connected to said tool, means for moving said tool to initial position against the action of said spring, a receiving device mounted on said frame for carrying the cut section of material from the mine wall to a position adjacent said striking tool, and releasing mechanism to cause said spring to actuate said striking tool against the cut section of material to break it into smaller sec tions.

55. A mining machine comprising a supporting frame, cutting mechanism mounted thereon in position for severing a section of material from a mine wall adjacent said cutting mechanism, a reciprocating breaking device mounted on said frame in a position spaced back from the mine wall, a spring for operating said breaking device, means for setting said breaking device, means for moving the cut section of material back from the mine wall into position adjacent said breaking device, and means for releasing said breaking device to cause said spring to actuate the same with a hammer blow against the cut section of material after being moved back from the mine wall to its position adjacent said breaking device.

56. A mining machine comprising a supporting frame, cutting mechanism mounted thereon for severing a section of material from a mine wall adjacent said frame, a reciprocable tool mounted on said frame in a position spaced back from the face of the mine wall, a spring connected to said tool, an arcuately oscillatory platfrom for receiving the cut section of material, means for operating said platform to carry the cut section of material from the mine wall to a position adjacent said reciprocable tool, and means operable upon the movement of said platform to a predetermined position to set said tool in initial position against the action of said spring and automatically releasing said setting means to cause said spring to actuate said tool with a hammer blow on said section of material while carried by said platform.

57. In a mining machine, the combination with a base frame, of a supporting frame, loop chain core-cutting mechanism having an unobstructed core-opening therethrough and mounted for lateral movement on said supporting frame, means for operating said loop chain core-cutting mechanism including lateral feed thereof relatively to said supporting frame and across a mine wall to cut a core of material in one feeding operation, means connected solely to the forward portion of said base frame for arcuately adjusting the elevation of said corecutting mechanism, receiving mechanism following said core-cutting mechanism approximately in the plane of the lower run thereof so as to extend under the core of material, and means for operating said receiving mechanism to carr the out material of said core thereon bac. from the mine wall toward loading position.

58. In a mining machine, the combination with a supporting frame, of loop chain core-cutting mechanism, means for operating said loop chain core-cutting mechanism including lateral feed thereof, and means extending solely from the bottom of said frame for arcuately adjusting the elevation of said loop chain core-cutting mechanism to effect the cutting of a plurality of cores one above another between the floor and roof of the mine chamber leaving the surfaces of such floor and roof substantially horizontal, the lower and upper runs of said loop chain core-cutting mechanism being rectilinear in elevation and respectively in approximate horizontal planes when at the floor and at the roof.

59. In a mining machine, the combination with a main frame, of a supplemental frame, loop chain core-cutting mechanism mounted on said supplemental frame for arcuate movement laterally across a mine wall, an arcuate platform connected to the lower run of said core-cutting mechanism to move therewith under the core of material produced thereby to receive the core of material when dislodged, means for operating said loop chain core-cutting mechanism including arcuate feed thereof while movin said platform under the core of materia produced by the operation of said loop chain core-cutting mechanism, means for effecting the reversal of movement of said core-cutting mechanism to restore the same to initial position and move said arcua-te platform with the dislodged material thereon to the rear portion of said supplemental frame, breaking mechanism mounted on said platform approximately midway between said cutting mechanism and the rear end of said platform, means for guiding said arcuate platform in an are on said supplemental frame, mechanism mounted on the rear portion of said supplemental frame for setting and automatically tripping said breaking device when said core of material extends across the rear portion of said supplemental frame while resting on said platform, a cushioned abutment at the rear end of said platform in position to engage the rear end of thecore, a pedestal on said main frame for guiding said supplemental frame in the up and down adjustments of said loop chain core-cutting mechanism, mechanism operable from the rear of said main frame for adjusting the height of said supplemental frame and said 100 chain core-cutting mechanism together with said platform, and a spring associated with said pedestal tending to counterbalance the weight of said supplemental frame and the parts mounted thereon to relieve the strain of such weight on said adjusting mechanism to facilitate operation thereof.

60. In a mining machine, the combination with a main frame, of an upright pedestal on the forward portion of said main frame, a drum mounted on said pedestal for up and down movement relatively thereto but-prevented from rotary movement relatively thereto, an annular flange at the lower end of said drum, means for supporting said drum at adjusted elevations relativel to said main frame, a ring-bearing mounte on said annular flange, a sleeve resting on said annular bearing and fitting the intermediate portion of said drum for rotation relatively thereto, an arcuate plate carried by the lower end of said sleeve in an approximately horizontal position, loop chain core-cutting mechanism including actuating mechanism therefor carried by said sleeve and rotatable bodily therewith, an arcuate platform connected to the lower run of the loop chain core-cutting mechanism and extending backwardly therefrom around said arcuate plate, a supplemental frame having a. gear fixed to its upper forward portion and secured to the upper end of said drum, the rear portion of said supplemental frame having a fixed platform in substantially the same plane as the said arcuate platform, and feeding mechanism comprising gearing on said loop chain core-cutting mechanism meshing with the fixed gear on said supplemental frame.

61. A mining machine comprising a frame, loop chain core-cutting mechanism mounted for arcua-te lateral movement on the forward portion of said frame, means for operating said core-cutting mechanism to cut a core from a mine wall in one feeding movement across the same, a platform following said core-cutting mechanism to extend under the core to receive the same when dislodged, means for moving said plat form to carry the core of material back from the mine wall to the rear portion of said frame, and breaking mechanism for acting on the core of material after it reaches a position at the rear portion of said frame.

62. A mining'machine comprising a supporting frame, mechanism mounted on the forward portion of said frame for dislodging a large block of material from a mine wall in advance of said frame, means for receiving such'large block of material from its position in the mine wall and movin it to the rear portion of said frame, an

mechanism in position to act on the material when it reaches the rear rtion of said frame for breaking such lock into smaller sections.

63. A mining machine comprising a supporting frame, core-cutting mechanism extending from said frame for cutting a core of material in a mine wall adjacent said frame, reciprocating-breaking mechanism mounted on said frame in position to act on the cut material, and means for confining the operation of said reciprocating-breaking mechanism to the same position relatively to said frame for all positions of the mining machine.

64. In a mining machine, the combination with a base frame, of a supporting frame slidable up and down arcuately thereon, loop chain core-cutting mechanism, means for operating said loop chain core-cutting mechanism to cut a core in a mine wall in one feeding operation in a general horizontal direction across said mine wall, a platform extending rearwardly from said loop chain core-cutting mechanism and movable bodily therewith in position for receiving cut material immediately as dislodged, mechanism for effecting the transfer of such dislodged material toward loading position, and means for arcuately adjusting the elevation of the core-cutting mechanism while retaining the rear portion of said supplemental frame at substantially the same elevation.

65. In a mining machine, the combination with loop chain core-cutting mechanism having an unobstructed core-opening therethrough, of a receiving device extending rearwardly from the lower run of said corecutting mechanism and movable bodily therewith, means for arcuately adjusting the whole machine including said loop chain corecutting mechanism and said receiving device in elevation, and mechanism for operating said core-cutting mechanism including lateral feed thereof at various elevations to cut a plurality of cores one above another.

66. In a mining machine, the combination with a main frame, of a supplemental frame, core-cutting mechanism mounted on said supplemental frame, receiving means adapted to move under the core of material produced by said core-cutting mechanism to receive the cut material when dislodged, means for operating said core-cutting mechanism including the feed thereof, means for effecting the transfer of the dislodged material toward the rear of said supplemental frame, breaking mechanism in position to act on the dislodged material when at the rear portion of said supplemental frame, a pedestal on said main frame for guiding said supplemental frame in up and down adjustments of said core-cutting mechanism, means for adjusting the height of said supplemental frame and said core-cutting mechanism to' ether with said receiving means, and resihent means to assist in supporting the weight of the said supplemental frame and the parts mounted thereon.

67. In a mining machine, the combination with a supporting frame, of loop chain corecutting mechanism mounted thereon, receiving means following said loop chain corecutting mechanism in position to extend under the cut core for receiving dislodged material and carrying the same thereon, mechanism for operatin said receiving means to transfer the dislodged material thereon back from the mine wall toward loadin position, and breaking mechanism in position to act on the core of material after being cut.

68. In a mining machine, the combination with a base frame, of a supporting frame, loop chain core-cutting mechanism mounted on said supporting frame for feeding movement relatively thereto, means for operating said loop chain core-cutting mechanism, a platform conforming to the contour of the unmined mass for receiving material as it is severed from its native position, means for moving said platform relatively to said supporting frame to carry said dislodged material away from the mine wall toward loading position, and means extending from said supporting frame solely to the forward portion of said base frame for arouately adjustin said core-cutting mechanism in elevation w ile retaining the rear portion of said supporting frameat a predetermined elevation.

69. In a mining machine, the combination with a supporting frame, of core-cutting mechanism mounted thereon, means for operating said core-cutting mechanism, a platform connected to said core-cutting mechanism and extending rearwardly therefrom to receive and carry the core cut by said corecutting mechanism, means for reversing the movement of said core-cutting mechanism and said platform to carry the core rearwardly toward loading position and restore said core-cutting mechanism to initial position, and a yielding abutment at the rear end of said platform for engaging the rear end of said core.

70. In a mining machine, the'combination with a supporting frame comprising an up right cylindrical bearing, of an auxiliary frame mounted on said supporting'frame to rotate on said cylindrical bearing, loop chain core-cutting mechanism mounted on said auxiliary frame, means for operating said loop chain core-cutting mechanism'including lateral arcuate feed thereof by movement of said auxiliary frame on said cylindrical bearing, a flat receiving table mounted on said auxiliary frame and having an arcuate segmental extension in position to receive the core cut in the mine wall in the space originally occupied by said material, and an upright arcuate flange concentric with said 0 lindrical bearing and spaced back from t e outer edge of said receiving table extension.

71. In a mining machine, the combination with supporting framework, of coreutting mechanism having an unobstructe coreopening thcrethrough and mounted on said framework to swing on an upright axis, means mounted on said framework and movable relatively thereto in position .to move under the cut core and receive the same, said receiving means being capable of carrying the dislodged material away from the mine wall toward loading position when said receiving means is moved relatively to said framework, means for operating said core-cutting mechanism including arcuate feeding movement thereof by swing ing the same on'said upright axis relatively to said framework, and means for arcuately adjusting both the same framework and the core-cutting mechanism bodily in elevation.

72. In a mining machine, the combination with. supporting framework, of corecutting mechanism mounted thereon and having an unobstructed core-opening therethrough, a platform mounted on said framework and movable relatively thereto under the core of cut material in position to receive the severed section directly from its original position in the mine wall and carry the disod'ged material thereon away from the mine wall when said receiving platform is moved relatively to said framework away from the mine wall, means for' operating said core-cutting mechanism including the feed thereof, and means for arcuately adjusting the Whole mining machine! including the core-cutting mechanism in elevation while retaining the rear of said framework at substantially the same elevation.

73. In a mining machine, the combination with a main frame, of a supplemental frame,

mining mechanism mounted on said supple-' mental frame, an upright post on said main frame, a screw-threaded rod on said main frame in screw-threaded connection with said supplemental frame to enable the supplemental frame and the mining mechanism mounted thereon to be adjusted in elevation relatively to said main frame and held at adjusted elevation, and counterbalancing mechanism connected between said main and supplemental frames for relieving the weight of the supplemental frame on said screw threaded rod and facilitate rotation of the latter and adjustment in elevation of said mining'mechanismf 74. ha mining machine,"the-combination with-a mainframe, ofan upright guide post thereon, a supplemental frame mounted on said post for support and for movement along the same to various elevations, means comprising a screw-threaded rod extending along said post for adjusting the elevation of said supplemental frame and holding the latter at adjusted elevation, mining mechanism mounted on said supplemental frame, and a spring-extending along said post between said main andsupplemental frames to partially counterbalance the weight of the supplemental frame and the mining mechanism mounted thereon and thereby facilitate the operation of said elevation and adjusting means.

7 5. In a mining machine, the combination with a main frame, of an upright post extending upwardly therefrom, mining mechanism comprising a supporting frame, means for pivotally supporting said supporting frame for rotation about said post, means com risin a screw-threaded rod extending t roug said- 'supporting means to adjust the elevation of-the latter together with said mining mechanism and its supporting frame, and means for rotating said mining mechanism about saidpost.

7 6. In a mining machine, the combination with a main frame, of an upright pedestal extending upwardly therefrom and having upright grooves on opposite sides, an up right 0 lindrical bearing surrounding said pedesta and slidable allon the same but prevented from turning re' atively to said pedestal, a spur gear fixed to the-upper end of said cylindrical bearing,'means com ris-- ing an upright screw-threaded rod extending along one of the grooves'in said pedestal and. having a screw-threaded engagement- With said cylindrical bearing toimpart up and down movements thereto when" said screw-threaded rod is rotated, a spring in the'other groove of said p'edes'tal 'between the main frame and said cylindrical bearing in position to relieve the weight on said screw-threaded rod to facilitate rotation vthereof, mining mechanismi comprising a supporting frame mounted for rotation on acting with said guide post to serve as the sole support for said supplemental frame and the mining mechanism mounted thereon at the adjusted elevation of said supplemental frame relatively to said main frame.

78. In a mining machine, the combination with a supporting frame, of loop chain corecutting mechanism having an unobstructed,

core-opening therethrough and mounted for lateral movement on said supporting frame, means for operating said loop chain corecutting mechanism including lateral feed thereof relatively to said supporting frame and across a mine wall to cut a core of material in one feeding operation, means extending in a general horizontal direction behind the lower run of the core-cutting mechanism in position to receive dislodged material, said receiving means being movable laterally with said core-cutting mechanism, means for moving said receiving means into receiving position, and means for arcuatel adjusting the whole mining machine inc uding the corecutting mech anism in elevation while retaining the rear of said supporting frame at substantially the same elevation.

79. In a mining machine, the combination with a supporting frame, of loop chain corecutting mechanism having an unobstructed core-opening therethrou h and mounted on said supporting frame f or swinging movement on an upright axis, means for operat ing said core-cutting mechanism including swinging thereof on said upright axis to secure the feed thereof, the upper and lower runs of said loop chain core-cutting mechanism being in spaced-apart planes each rectilinear in elevation, and means for arcuately adjusting the elevation of the entire mining machine including said core-cutting mechanism on said supporting frame.

80. In a mining machine, the combination with a base frame, having an arcuate standard of a supporting frame, core-cutting mechanism having an unobstructed core-opening therethrough with upper and lower spaced-apart runs rectilinear in elevation, said core-cutting mechanism being mounted on said supporting frame for swinging movement on an upright axis, means for supporting said core-cutting mechanism for up and down arcuate adjustment along said standard relatively to said base frame while retaining the rear portion of said supporting frame at substantially the same elevation relative to said base frame, and means for operating said corecutting mechanism including arcuate feeding movement thereof to cut arcuate cores from an upright mine wall at various elevations.

81. In a mining machine, the combination with a supporting frame, of loop chain corecutting mechanism having an unobstructed core-opening therethrough and mounted for swinging movement on an upright axis on said frame, receiving means following said core-cutting mechanism in position to extend under the core of material extending through the said unobstructed core-opening and in position for receiving dislodged material and carrying the same thereon, mech-, anism for operating said receiving means relatively to said frame to transfer the dislodged material thereon back from the mine wall toward loading position, and breaking mechanism in position to act on the core material after being out.

82. In a mining machine, the combination with cutting mechanism, of means for operating said cutting mechanism to entire Y cut out from the wall a section of material, a rigid device for said cutting mechanism to extend under a section of material as it is being cut in position for receiving the cut material from above, means for operating said receiving device to cause the same to carry into loading position the section of material resting by gravity thereon, and means for arcuately adjusting the cutting mechanism as a whole in elevation.

83. In a mining machine, the combination with kerf-cutting mechanism for cutting spaced-apart kerfs and a communicating kerf back of a core of material in a mine wall, of means for operating said kerf-cutting mechanism to completely sever the core of material from the mine wall, a rigid device for supporting the core of material intact until after the entire core is completely severed from the mine wall, means for operating said supporting device to move back from the mine wall said core of material in its entirety, and means for arcuate- 1y adjusting the cutting mechanism as a whole in elevation.

84. A mining machine comprising an arcuate standard, a supporting frame, loop chain core-cutting mechanism mounted on said frame for swinging feeding movement upon an upright axis, means for operating said loop chain core-cutting mechanism, a

support connected to said frame for receiving all of said core directly from its out position in a mine wall, means for moving said sup ort together with the core thereon back fiom the mine wall, and means for bodily adjusting the cutting mechanism in elevation along said standard on arcuate lines.

85. In a mining machine, the combination with a supporting frame, of a loop chain I core-cutter having an unobstructed core leading therethrough and mounted on said frame for swinging feeding movement relatively to said frame, meansfor operating said loop chain core-cutter, a supporting plate adapted to occupy a position extending in a general horizontal direction and to move under the core to support and carry the same, means for moving said plate to move the core thereon back from the main wall, and means for arcuately adjusting the core-cutter and supporting frame as a whole in elevation.

86. In a mining machine, the combination with a bed frame comprising spaced-apart upright standards at the rear end thereof, roof jacks connected to said standards for holding said bed frame in a stationary position and to resist movement back from the mine wall, an upright pedestal on said bed frame at the forward portion thereof ahead of said upright standards, a supplemental frame mounted on said pedestal and having no supporting connection with said upright standards but being free to move up and down along said standards and between the same, mining mechanism mounted on the forward portion of said supplemental frame, and means for supporting said supplemental frame at various elevations relatively to said bed frame.

87. In a mining machine, the combination with a bed frame comprising spaced-apart upright standards, roof jacks connectedto said standards for anchoring said bed frame, upright guiding mechanism at the forward portion of said bed frame, a supplemental frame mounted on said guiding mechanism for adjustment in elevation along the same, mining mechanism mounted on said supplemental frame, and means for supporting said supplemental frame and said mining mechanism at various elevations relative to said frame but deriving no support from said standards.

88. In a mining machine, the combination with a bed frame comprising spaced-apart upright standards, of means for anchoring the bed frame, a supplemental frame out of supporting connection with said standards but having a loading platform extendin between said standards and movable up and down relatively to said standards and along the same, mining mechanism mounted on the forward portion of said supplemental frame, means for supporting said supplemental. frame andsaid mining mechanism at various elevations relative to said bed frame, and means for delivering the dislodged material to a position at the rear portion of said supplemental frame for movement over said loading platform.

89. In a mining machine, the combination with a bed frame comprising spaced-apart upright standards at the rear end thereof, an upright pedestal at the central forward portion of said bed frame, a supplemental frame mounted for up and down movement along said pedestal and comprising a rear platform extending between said upright standards and also comprising a cylindrical enace bearingsurrounding said pedestal, an additional frame rotatably mounted on said bearing, core-cutting mechanism having an unobstructed core-opening therethrough and mounted on said additional frame to rotate bodily therewith, means for operating said core-cutting mechanism including rotary movement of said additional frame to secure feed of said core-cutting mechanism to cut a core of material from an upright mine wall inadvance of the aforesaid frames, means for supporting said supplemental frame, said additional frame and said corecutting mechanism at various elevations and solely at said pedestal without support from said upright standards, and means for deliverin dislodged core material to the rear portion of said supplemental frame for movement over said platform.

90. In a mining machine, the combination with supporting framework comprising a rear loading platform having a forward arcuate edge, of dislodging mechanism rotatably mounted on said framework for bodily arcuate movement across the mine wall, an arcuate delivery platform movable along the forward arcuate edge of said loading platform and in position on said frame work to follow said dislodging mechanism to receive the dislodged material, and means for moving said arcuate platform arcuately into a position adjacent said loading platform.

91. In a mining machine, the combination with supporting framework comprising a rear loading platform having a forward arcuate edge and an arcuate space forwardly thereof, of core-cutting mechanism having an unobstructed core-opening there through and rotatably mounted on an upright axis concentric with the forward arcuate edge of said loading platform, an arcuate delivery latform connected to said. core-cutting mec anism to move therewith and extending rearwardly from the lower run of said core-cutting mechanism in position to receive the core, and means for moving said platform arcuately and rearwardly along said arcuate space to deliver the core of material to a position adjacent said loading platform.

92. In a mining machine, the combination with supporting framework comprising a loading platform at its rear portion, of cutting mechanism mounted on said framework for swinging feeding movement on an up right axis, arcuate receivin mechanism movable under the cut material to receive and carry the same, a yielding abutment at the rear end of said receiving mechanism, and means for arcuately and rearwardly moving said arcuate receiving mechanism to deliver the cut material to a position for movement onto said loading platform.

93. A mining machine comprising supname to this specification, in the presence porting framework, means mounted on said of two subscribing witnesses, on this 2d 10 framework for cutting a single core section day of September, A. D. 1914. in a mine vein, and means separate from 5 said first-named cutting means but in'posi- EDMUND tion on said framework for transversely Witnesses: severing said section into separate parts. Cmmms H. SEEM,

In testimony whereof I have signed my EDGAR FRANCIS Bmmmm.

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