US1424113A - Mining- machine - Google Patents

Description

E. C. MORGAN.

MINING MACHINE.

APPLICATION FILED JUNE 27, I910. RENEWED .*-1AY18.1916.

1,424, 1 1 3.. I Patented J uly 25, 1922.

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E. C. MORGAN;

MINING MACHINE. APPLICATION man JUNE 21. mo.- RENEWED MAY 1a. 1916.

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E. C. MORGAN.

MINING MACHINE.

APPLICATION FILED JUNE 2?. 1910. RENEWED MAY 18,1916.

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h z'tnesses.

E. C. MORGAN. MINING MACHINE.

APPLICATION FILED JUNE 27, IQIO. RENEWED MAY 18, 1916.

Patented July 25, 1922.

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I DZVzlfnesse-s I E. C. MORGAN MINING MACHINE. APPLICATIONIHLEDJUNEZT,1910. RENEWED MAY 18,1916.

Patented July 25, 19 22.

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E. C. MORGAN.

Patented July 25, 1922.

.7 SHEETSSHEET 6- fitness; 5 'c Inve tor A: torney E. C. MORGAN.

MINING MACHINE. APPLICATION FILED JUNE 27. 1910. RENEWED MAY 18,1916. 1,424,113.

Patented July 25, 1922.

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Inventor- W77 Attorney ll z'tnesses @FFIQE.

EDll/IUND' IIIORGAN, F MORGAN PARK, ILLINOIS.

MINING IvIACHINE.

Specification of Letters Patent.

Patented July 25, 1922.

Application filed June 27', 1916, Serial No. 569,173. Renewed May 18, 1916. Serial No. 98,438.

To all who-m it may concern:

Be it known that l, l lmaorm c. hicnoax, a citizen of the United States, residing at Morgan Park, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Mining lilachines, of which the following is a specification.

This invention relates to minin' n1achinery and has for its primary object to provide an improved construction, combination and arrangement of parts in a mining machine. r

One of the objects of the present invention is to provide an improved mining machine constructed in sections.

Another object of my invention is the provision of means for producing transverse lrerfs in amine wall while an under kerf is being cut, and intermittently moving crosscutting mechanism to new positions while the undercutting mechanism continues in operation.

Another object of the invention is to provide cross-cutting mechanism above an undercut in a mine wall and combining there with dislodging and loading apparatus.

A further object of the invention is to provide in a machine adapted to move su stantially .parallelto a coal face, the combination of an undercutting means and a breaking down device adapted to attack the coal wall located behind the undercutting means and in a plane transverse and substantially perpendicular to the main face of the coal.

Other and further objects will appear in the specification and be more specifically pointed out in the appended claims, reference being had to the accompanying draw-- iugs which exemplify the invention and in which- Figure 1 is a plan view of ti e front end of a mining machine constructed in accord ance with the principles of this invention.

Figure 1 is a plan View of the rear end of the same machine.

Figure 2 is a side elevation of the front end of the same machine.

Figure 2 is a side elevation of the rear end of the same machine.

Figure 3 is a front elevation of the same machine. v

Figure 1 is a rear elevation of the ma chine.

Figure 5 is a Section on the line V-V Fig, 1.

Figure 6 is a section on the line VI-Vl Fig 1 Figure "7 is a fragmentary sectional view taken on the line 7-7 of Fig. 1 looking in. the direction of the arrows, a portion of the bracket and of the circular movable pin, and the vertical shaft, being shown in elevation.

Referring more particularly to the drawings, the frame work of the machine comprises a forward slidabl'e base member 1 and a rear slidable base member 2, said base members being adjustably connected together preferably by a slide and guide connection shown on the drawings as a bar 3 mounted within a rearwardly extending portion 4. of the forward base member 1. For this purpose the slidable member 2 is provided with laterally projecting arms 5 upon the outer ends of which are the collars or sleeves 6 which slidably engage the bar 3. Upon the front end of the forward memher 1, ismount-ed a winding drum 7 pro-' vided with a flexible connection 8 leading to a strut or post 9, which, as shown in Figs. 2 and 3, is imbedded at either end in the upper and lower walls of the gallery. Said strut is provided with an adjustable portion 10 which maybe rotated by a wrench or lever 11 so as to secure it firmly in position or to release it from engagement with the roof. The drum 7 is keyed to a shaft 12 upon which is loosely mounted a spiral gear 13 meshing with a spiral worm 1d secured to the endof a drive shaft 15 which re ceivcs its motion from a motor 16. The gear 13 has rigidlymounted thereon, a clutch element 17 with which cooperates a clutch element. 18 splined on theshaft 12. The clutch element 18 is providedwith a grooved. collar 19 in which engages a forked lever 20 integrally formed with an operating lever 21 provided with a pawl latch 22 engaging the segment ratchet 28. By this means the spiral gear 13 may, whenever desired, be locked to the shaft 12 so that should the motor 1 6 be running, the drum 7 would be rotated to wind 'the cable 8 thereon and thus cause the entire machine to slide over the floor of the mine, or should occasion demand it, the base member 1 can be moved forward with the undercutting tool presently to be described, while the rear section of the machine remains stationary. The drive shaft 15 has keyed thereto a spiral worm 2A which meshes with a worm gear for driving the undercutting tool head 26. A gear 27 on the end of the drive shaft 15 transmits power to a gear 28 keyed to an intermediate shaft 29, said shaft 29 being extended rearwardly and provided by means of a universal coupling 30 with a flexible connection to an extensible shaft 31,, the other end of said extensible shaft 31 being con nected by a universal joint 32 with a short driven shaft 33.

Referring now more especially to Figures 1 and 2*, the shaft 29 is connected by bevel gears 34 and 35 through the interinedium of an extensible shaft 36, with a cutter shaft 37 upon which is carried a rotary crosscutting tool 38. The cross-cutting tool 38, together with the shaft 37, is journaled within a carriage 39, mounted upon the forward member of the base and which carriage may be traversed toward the coal by means of a rack l0 rigidly mounted on said carriage 39. A second rack 4-1, also rigidly mounted on the carriage 39, serves for (the return movement of the carriage. To effect these movements, a vertical spindle Fig. 5 has keyed thereto a worm gear 43 with which inter-meshes a worm d4: keyed to the shaft 37. Upon the lower end of the spindle 42 is loosely journaled a small pinion 45 provided with a clutch element 46. A larger spur gear 47 is loosely journaled upon the spindle 42 above the pinion 45, while between said pinion and gear is a clutch element 48 slidably mounted on the spindle 42 but held against turning thereon by means of a spline 49. A shifting lever 50 operably engaging the clutching element as serves to shift said clutch element into clutch with either of the gears 45 or 47, the pinion 45 being adapted to impart the slow inward movement to the carriage 39 while the larger gear d7 serves to impart the quick return thereto. The carriage 39 is reciprocally mounted in guides or ways 51 which overhang the shaft 29.

In order to bring down the coal which has been channeled by an undercut and. grooved by a crosscut, a picking device (F l) mounted upon the rear base member 2 and preferably comprises a picking tool 52 reciprocally mounted within a housing 53 by means of a plunger 54: having a piston 55 which is adapted to be acted upon by any suitable elastic fluid in the well known manner not specifically concerned in the present invention. The housing 53 is provided with trunnions 54 rotatably mounted under the arms of a bearing fork 55 Said bearing fork 55 is in turn pivotally mounted upon an upright or standard 56 (Fig. 2 to oscillate about a vertical axis. The pick 52 is thus mounted to have a universal movement and the housing 53 is provided with a handle 57 whereby the direction of the picking action may be controlled. After the coal has been brought down by the pick 52, gathering mechanism comprising a finger composed of a horizontal plate 53 and a vertical flange or plate 59 along a portion of one edge of the horizontal plate is adapted to displace the coal laterally by being slidably mounted in a bearing block 60 which is pivotally mounted at 61 in the outer end of an arm 62 rigidly connected to the rear member 2. A pin 63 projecting from the blade of the finger 58 pivotally engages a rotary disk (3-1 keyed to a spindle 65 (see Fig. l) upon which is also keyed a beveled gear 66. A pinion 67 (Fig. 1) meshing with the gear 66 transmits power thereto by means of an extensible shaft 68 which receives its power through a pinion 69 from the bevelec gear 70 which in turn meshes with a gear 71 keyed to the driven shaft 33,hereinbefore referred to. The beveled gear 70 is keyed to a stub shaft 72 upon which is also keyed a sprocket wheel 73 for driving an endless chain 74, said endless chain being provided with outwardly projecting arms or flights 75 into the path of movement of which the coal is moved by means of the finger 58. The flight conveyer, comprising the endless chain T l and the projecting flights or arms 75, is operatively mounted within a chute 7G projecting upwardly and rearwardly from the base member 2. A lateral rail or flange 7 7 of the chute 7 6, serves to confine the coal to the chute. In order to adapt the chute to be readily adjusted in position on the base member 2, said chute is provided adjacent its lower end (see Fig. 6) with a ball and socket joint 7 8 and with a vertically adjustable abutment or support 79 having a threaded connection with a screw 80 upon which it may be raised or lowered by means of a hand wheel 81. A pedestal 82 is connected by link 83 with a loop 84 secured to said chute in such manner as to anchor said chute to limit its movement. The inner lower end of said chute is provided with a projecting scoop portion 85 which is sharpened on its lateral. edge to adapt it to be inserted under the coal which is to be removed thereover. The projecting scoop portion 85 is shown in Figs. l and 6 as constituting a plate adapted to occupy a position at the receiving end of the conveyer in the plane of the under kerf.

In order to adjust the position of the base member 2 relatively to the base member 1 and thus adjust the cross-cutting tool 38 relatively to the undercutting kerf cutter 26, a cable 86 (see Fig. l") is secured to an eye 87 rigidly mounted upon a web 38 on the rearwardly extending portion of the forward member 1. The cable 36 may be wound upon a drum (see Figs. 1 and by causing .19 said drum to be rotated on a vertical spindle 90 to which is keyed a beveled gear 91 meshing with a pinion 92 on the end of a shaft 93, the other end of the shaft 93 being provided with a second beveled pinion 9a which meshes with the beveled. gear 66, hereinbe fore referred to. A shifting lever 95 (Fig, 1) serves to shift a clutch element 96 which is keyed to the spindle 90, into clutching engagement with a clutching surface formed in the drum 89.

The forward base member 1 may, if desired, be provided with a vertically projecting flange 97 so as to maintain the machine accurately in position during the cutting operations, by means of a series of posts 98 vertically disposed at one side of the machine. The fiange 97 may engage the posts 98 to guide the mining and loading machine laterally along a coal face and parallel thereto.

lVith this improved construction, it will be apparent that the rotary undercutting kerf-cutter 26, as shown in Fig. 1, may be continuously advanced along a mine wall during the operation of said kerf-cutter. In order to permit the cross-cutting rotary kerfcutter 38, as shown in Fig. l, to operate during the feeding movement of the undercutter along the mine wall, and in order to permit the cross-cutting tool to be intermittently advanced during the operation of the undercutting tool, the supporting framework of the entire machine is constructed in secions adjustable with respect to each other, the rear sectional frame 2 being slidably mounted on the forward sectional frame 1, as shown in Fig. 1 the cross-cutting kerf cutter has a feeding movement substantially at right angles to the normal upright face of the coal wall, and during the operation of this cross-cutting kerf-cutter the forward sectional frame 1 slides in the brackets 5 ol the rear sectional frame. W hen the cross cutter is to be advanced forwardly to a new position, a pull is exerted on the rope 86 by means of the mechanism shown in Fig. 1 to slide the rear sectional frame 2 forwardly on the forward sectional frame.

I have described and claimedin a co-pend- .ing divisional application, Serial No. 76,- 910, liled February 8, 1916, for an improvement in loading appaiatus, the specilic construction herein disclosed for gathering the broken down coal by moving it into the path of the flight conveyer. 'lhis gathering mechanism described and claimed in said onpending application Serial No. 76,910, comprises the finger 58 having the uprigl'it blade 59 and parts connected thereto for operating the same to effect movement of the dislodged coal onto the receiving end of the flight conveyer.

In my co-pending application, Serial No. 210,796, filed January 7, 1918, as a renewal of Serial No. 569,168, originally filed June chines, I have described and claimed a mining and loading machine comprising mecha- 1910, for an improvement in mining manism for cutting kerfs in a mine wall in intersecting planes, a pick machine, a conveyer, and gathering mechanism for moving material dislodged by the pick machine onto the conveyer, but in that combination a core of material is cut in the mine wall by the kerf-cutting mechanism, while in the present application the plane of the vertical kerfcutter intersects the plane of the undercutter without cutting such a core and. fur thermore, in Serial No. 210,796 the pick machine acts substantially at right angles to the normal upright face of the coal wall, whereas, in the present application the pick machine is adapted to operate on an advancing coal face in vertical planes sub stantially at right angles to the normal coal. face parallel to which the mining machine is moved during the feed of the undercutter. I therefore wish to claim more broadly in the present application such combinations with the intersecting kerf-cutting mechanism as are common to the two applications, retaining in Serial No. 210,796, claims directed to subject-matter disclosed therein and not disclosed in the present application, while the claims in Serial No. 76,910 are directed to the gathering mechanism per se and the combination of the gathering mechanism and dislodging mechanism.

'lVhat I claim is:

1. In a mining machine, the combination with a supporting frame, of cutting mechanism mounted thereon and movable bodily therewith into positions to cut horizontal kerfs, an additional supporting frame connected to said first-named supporting frame in fixed relation thereto but movable relatively'thereto, cutting mechanism mounted onsaid additional frame and movable bodily therewith into positions to cut uprightkerfs transverse to the coal face, and means for operating said cutting mechanisms.

2. In a mining machine, the combination with a supporting frame, of cutting mechanism mounted on said supporting frame in position to cut a horizontal kerf, an additional supporting frame permanently mounted on said first named frame for movement relatively thereto and in fixed relation to said first named frame, cutting mechanism mounted on said additional frame and movable bodily therewith into positions to cut transversely of the coal face,

andmeans for operating both of said cutting mechanisms from a single source of power during the various positions of said additional frame relatively to said first named frame. I

3. In a mining machine, the combination with supporting framework comprising relatively slidable sections, a kerf cutter mounted on one sectionand morable bodily therewith in position to cut a substantially hori- Zontal kerf m an upright mine wall, an additional lrerf cutter mounted on the other section in posit-ion to cut an upright kerf in said upright mine wall, means for driving said kerf cutters, and separate means for feeding said kerf cutters.

4-. In a mining machine, the combination with a frame, of kerf cutting mechanism mounted thereon, means for operating said kerf cutting mechanism including the feed thereof by movement of said frame, a re ciprocable coal-breaking device, means for supporting said coal-breaking device on said frame for movement relatively thereto, and means for operating said device during the operation of said cutting mechanism including the feed of the latter.

5. In a coal mining machine, the combination of a forward base member having a rotary cutter operating in a horizontal plane adjacent the floor of a mine, a rear base member movable toward and away from the forward base member and having a vertically disposed rotary cutter operating in a plane transverse to that in which the other cutter operates, a motor mounted on one of t 1e base members, and means for operatively connecting each cutter to said motor.

6. In a coal mining machine, the combination of a forward base member having a rotary cutter operating in a horizontal plane adjacent the floor of a mine, a rear base member movable toward and away from the forward base member and having a vertically disposed rotary cutter opera ing in a plane transverse to that in which the other cutter operates, a motor mounted on one of the base members, means for operatively connecting each cutter to said motor, and means mounted on the forward base member and operably connected to said motor for drawing the machine on the floor of the mine.

7. In a coal mining machine, the combination of a forward base member having a rotary cutter operating in a horizontal plane adjacent the floor of a mine, a rear base member movable toward and away from the forward base member and having a vertically disposed rotary cutter operating in a plane transverse to that in which the other cutter operates, a motor mounted on one of the base members, means for operatively connecting each cutter to said motor, a winding drum mounted on the forward base member, and a releasable clutching mechanism geared to said motor and winding drum.

8. In a mining machine, the combination with a main frame, of a kerf cutter mounted on said main frame in position to cut a horizontal kerf in an upright mine wall, a supplemental frame movable on said main frame, an additional kerf cutter mounted on said supplemental frame in position to cut a kerf in said upright mine Wall above the plane of the horizontal kerf, means for moving the main frame to effect the feedof said first named kerf cutter, means for feeding said additional kerf cutter transversely of the upright mine wall, and mechanism for simultaneously driving both of said kerf cutters during the respective feeds thereof and while said main frame moves along said upright mine wall relatively to said supplemental frame.

9. In a mining machine, the combination with a main frame, of a kerf cutter mounted on said main frame for operation in approximately a horizontal plane, a supplemental frame carried by said main frame, an additional kerf cutter mounted on said supplemental frame for operation in a substantially vertical plane, means for feeding the said vertical cutter transversely of said supplemental frame, and means for feeding the main frame forward longitudinally together with the horizontal cutter mounted thereon while said supplemental frame is being held substantially stationary while the vertical cutter operates on the mine wall.

10. in a mining machine, the combination with a main frame, of a horizontal kerf cutter mounted thereon, a supplemental frame movably mounted on said main frame, a vertical kerf cutter mounted on said supplemental frame, means for feeding said vertical kerf cutter transversely of said supplemental frame, mechanism for feeding forward the main frame together with the horizontal kerf cutter mounted thereon, and apparatus for moving the supplemental frame relatively to the main frame to adjust the position of the vertical kerf cutter.

11. In a long wall mining machine, the combination with a main frame, of an undercutter mounted on said main frame, means for feeding said main frame together with the under cutter thereon along the mine wall while said under cutter is in operation, a supplementary frame slidably mounted on said main frame, a vertical cross cutter mounted on said supplemental frame, means for feeding said cross cutter transversely of said supplemental frame and at substantially right angles to the mine wall during the operation of said cross-cutter, means for simultaneously operating said under cutter, and mechanism operable at will to shift said supplemental frame longitudinally relatively to said main frame to adjust the cross cutter to a new forward position for operation against the mine wall.

12. In a mining machine, the combination with a main frame, of a cutter mounted on said main frameand operating in asubstantially horizontal plane, means for feeding said main frame forward while said outter is in operation, a supplemental frame movably mounted on said main frame, an additional cutter mounted on said supplemental frame for operation in a substantially vertical plane, means for feeding said vertical cutter transversely of said supplemental frame while said vertical cutter is in operation, apparatus for simultaneously operating both the horizontal cutter and the vertical cutter, means for vaiying the position of the supplemental f lie on said main frame to adjust the position of said vertical cutter, and means for breaking down the s L duced by said horizontal and vertical cutters.

13. In a mining machine, the combination with supporting framework, of a kerf cut.- ter mounted on said framework in position to cut a kerf along'a mine wall in a plane substantially perpendicular thereto, an additional kerf cutter mounted on said framework in position to cut as kerlj' substantially at right angles to the mine wall but inter secting the kerf cut by said first-named kerf cutter so as to cut a body of material adjacent said framew rk in intersecting planes, means for adjusting t 1e position of said transverse kerf cutter on said framework relatively to the other kerf cutter, and a universally mounted pick machine mounted. on said framework in position to dislodge the said body of material bounded by the intersecting ke'rfs produced by said kerf cutters.

. l. a mining machine, the combination with a cutter rotatable in one plane, of a second cutter rotatable in a plane transverse thereto, means for feedingeach of said cutters into an upright mine wall to cut in planes extending transversely of such uprigl'it mine wall ano each in the plane of its rotation, and means for adjusting one of said. cutters relatively to the other in a direction intersecting the plane of action of said adjustable cutter.

15. in mining machine, the combination with a cutter rotatable in one plane, of a secoiu'l cutter rotatable in a plane transverse thereto, means for feeding each of said cutters into an upright mine wall to cut in planes extending;- traosversel y of such upright mine wall and each in the plane of its rota ion, means for adjusting one ofsaid cutters relatively tr the other in a direction intersecting the plane of action of said adjustalrlc cutter, means for driving one of said cutters, and. means for ooerably connecting the other cutter with the driving mechanism for the first cutter.

M3. in a mining: machine, the combination with a cutter rotatable in onev plane, of a second cutter rotatable in a plane trans verse thereto, means for feeding; each of said cutters into an upright mine wall to oper ate in planes transversely of such upright mine wall and each in the plane of its ro tation, means for adjusting one of said cutters relatively to the other in a direction in tersecting the plane of action of said adjustable cutter, means for driving one of said cutters, and means for operably connecting the other cutter with the driving mechanism for the first cutter, said. connecting means being flexible and extensihie.

17. In a mining machine, the combination with supporting framework, of a kerf cutter mountel thereon in position to undercut a wall of coal in an approximately hori zontal plane, a second cutter mounted on said framework in position to cut a kerf in a plane transverse to the plane of said firstnamed kerf cutter, said transverse kerl cutter being initially out of engagement with the coal wall, means for driving both of said kerf cutters from the same source of power, means for simultaneously feeding both of said kerf cutters, and means individual to the said kerf cutters for controlling their feeding movements.

1.8. In a mining machine, the combination with supporting frameworlgof a kerf cutter mounted on said framework in. position to undercut a wall of coal in an approximately horizontal plane, a second kerf cutter mounted on said framework in position to be initially out of engagement with the coal,

wall but capable of cutting a kerf in the mine wall in a plane transversely of the plane of the first-named kerf, means for driving both of said lcrf cutters from the same source of power, means for feeding the undercutting kerf cutter, means for feeding the second-named kerf cutter into the mine. wall transversely of the plane of the kerf produced by the first-named kerf cutter, means individual to said kerf cutters for controlling the feeding movements thereof, and mechanism coacting with the feeding mechanism of the second-named kerf cutter for effecting a quick return of the latter to initial position after such t 'ansverse kerf has been cut thereby.

19. In a mining machine, the combination with supporting; framework, of a cutter mounted on said framework in position to undercut a body of coal, a second. cutter mounted on said framework in position to cut such a body of coal transversely of the plane of the said undercut, said second cutter being" initially out of engagement with the coal, means for operating said cutters including: the feed of each, and means mounted on said framework for moving' the second cutter bodily along the minewall to new positions relatively to the firstcutter and at intervals.

20. In a mining machine, the combination with an undercutting tool operating adjacent the floor of the mine, of a second cutter operable transversely to the first said cutter, means for drivi'n said cutters, a feeding mechanism for the second cutter,

means for effecting the operation of the feeding mechanism intermittently, a pick for bringing down the coal cut by said outters, and framework for supporting said pick in fixed relation with said second cutter.

21. In a mining machine, the combination with an undercutting tool operating adjacent the floor of the mine, of a second cutter operable transversely to the first said cutter, means for driving said cutters, a feeding mechanism for the second cutter, means for effecting the operation of the feeding mechanism intermittently, a pick for bringing down the coal cut by said outters, a support for said pick, a universal connection between the pick and its support, and framework for supporting said cutters and said pick in fixed relation to each other.

22. In a mining machine, the combination with a supporting frame, of kerf cutting mechanism mounted thereon and movable bodily therewith, a supplemental frame con nected to said main frame and movable bodily therewith, said supplemental frame being guided on said main frame for a predetermined limited movement relatively to said main frame and in fixed relation to the latter, additional kerf cutting mechanism mounted on said supplemental frame and movable bodily therewith, said kerf cutting mechanisms being mounted for operation in intersecting planes, means for driving said cutting mechanisms, means for moving said main frame to effect feeding of said first named cutting mechanism, means for feeding said additional cutting mechanism rel atively to both of said frames, means for moving said supplemental frame relatively to said main frame to adjust the position of said additional cutting mechanism, and means mounted on said supplemental frame and movable bodily therewith, said breaking down means being in position to dislodge the material cut by said cutting mechanisms.

23. In a machine of the character described, the combination with a forward base member having an undercutting tool mounted thereon and means for feeding said member along a. wall of coal, of a rear base member, a transverse cutter mounted on the rear member, means for feeding the last cutter into and ont of the coal wall, a motor operably connectedv with each of said outters, feeding mechanism, and means for imparting relative movement to said base members.

24. In a mining machine, the combination with a forward base member, of a motor mounted thereon, an undercutting tool driven by said motor, a rear base member slidably connected with said forward base member, a driven shaft carried by the rear base member and operatively connected with saic motor, a cross-cutting tool mounted on the rear base member and operatively connected to said motor, and a winding drum mounted on the rear base member and operatively connected to said driven shaft said winding drum being provided with a flexible connection secured to the forward base member.

25. In a coal mining machine, the combination with supporting framework comprising base sections movable relatively to each other but having a fixed relative relation with the relative movement limited, a cutting tool mounted on one of said base sections, and movable bodily therewith to cut a horizontal kerf in an upright mine wall, an additional cutting tool mounted on the other section and movable bodily therewith to positions for cutting upright kerfs in such mine wall, and means mounted on said framework common to both of said cutting tools for operating them simultaneously, including the feed thereof,

26. In a coal mining machine, the combination with supporting framework, comprising base sections having limited relative movement and permanently connected together in fixed relation, a. cutting tool mounted on one section and mov ble bodily therewith, another cutting tool mounted on the other section and movable bodily therewith, means common to the cutting tools for.

operating them simultaneously in the various relative positions of said sections to cut kerfs in an upright mine wall, and means individual to the cutting tool on one section for controlling the feed thereof independ ently of the feed. of the cutting tool on the other section.

27. In a mining machine, the combination with an under-cutting kerf cutter, of a second cutter disposed in a plane trans verse to the plane of said under-cutting kerf cutter, means for feeding said undercutting kerf cutter along a mine wall, means for feeding said second kerf cutter into the mine wall while the said under-cutting kerf cutter is operating to produce an under cut, and means for advancing said kerf cutter to a new position during the operation of said under cutter.

28. In a mining machine, the combima tion with framework, of two cutters mounted thereon in predetermined spaced r lation, means for operating said cutters, means individual to said cutters for controlling the feeding, movements thereof, and means on said framew rk for breaking down the material bounded by the cuts made by said cutters.

29. In a mining machine, the combination with kerf cutter for making an under out along a mine wall, of a second kerf cutter for making a cut in the mine wall-substantially at right angles to the face thereof, means for feeding the under cutter along the mine wall, means for sinniltaneously with two feeding the second. kerf cutter into the mine wall, and mechanism for effecting intermittent advancement of the second cutter along the mine wall to new positions.

30. In a mining machine, the combination with supporting framework comprising two sections having limited relative movement and connected together in fixed relation, of an undercutting kerf cutter mounted on the forward section, means for operating said kerf cutter, a second kerf cutter mounted on the other section of said framework for producing a kerf in the mine wall in a plane substantially at right angles to the plane of said undercutting :erf cutter, means for operating said second kerf cutter to cut a kerf extending above the under-kerf and substantially at right angles thereto, means for controlling said last-named operating means independently of the operation said under-cutting l-Lerf cutter, and means advancing the sectioncarrying said second kerf cutter to a new position along the other section while said under-cutting kerf cutter continues in operation.

31, I mining machine, the combination relatively movable interconnected frames, of an under-cutting kerf cutter on the ward frame, a transverse kerf cutter on the rear frame, means for operating said. c itters, means for controlling the op erations of said kerf cutters independently of each other, means for controlling the ad\ t ice of ;he transverse kerf cutter intermittently to new positions, means on the rear fra for breaking down the material. above the under cut and back of the transverse cut, and loading apparatus also mounted on the rear frame andextending to a position adjacent the rear of the transverse cut- In mining machine, the combination two connected. but relatively movable .fwjnes, of an under cutter on the forward frame, a right angle cutter on the rear fi mo, means for operating said cutters, means for controlling sucn operation independently of each other, means for advancf, 'ihc roa frame relatively to the forward frame to move the right angle cutter to a new i :itiou, and means nioi'zntcd on the rear frame for break! down the material above the under cut and back of the right angle cut.

ln mining machine, the coml'iination with framework comprising two relatively movable interconnected sections, of an undercutting kerf cutter on the forward section, a-transverse kerf cutter on the rear section, means for operating said kerf cutters, means for controlling the transverse cutter independently of the under cutter, means for effecting the advance of the transverse cutter at will. to intermittently adjust the same to new cutting positions, a

pick machine mounted on the rear section to break down the material above the under cut and back of the transverse cut, conveying mechanism on the rear section and extending to a position between said pick machine and said transverse kerf cutter, and mechanism for automatically moving the broken down material into position to be acted on by said conveying mechanism, said cutters, pick machine and conveying mechanism being mounted on said framework to constitute a unitary mining and loading machine.

34. In a machine for undercutting, breaking down and loading coal, the combination with framework movable along a path substantially parallel to a coal face, of a lowdown laterally projecting horizontal kerf cutter on the framework for undercutting coal to be removed, means for engaging the frame and causing it to move in a fixed path, a blow-striking coal-breaking pick behind said cutter on said framework for breaking down the coal, and means on said framework for removing the broken down coal, said breaking down and renaming means performing their respective functions as the said cutter is advanced to form the kerf.

35. In apparatus of the character set forth, the combination of a frame adapted to travel along a coal face, cutter mechanism mounted on said frame and adapted to cut vertical kerfs in the coal transverse to the face thereof, and an impact breaking device mounted on the frame to swing horizontally for the purpose of effectively attacking the body of coal between such kerfs,

- and to move up and down for the purpose of breaking down and loading coal, the combi-' nation with supporting framework movable along a path substantially parallel to a coal face, of a low-down laterally projecting horizontal kerf cutter mounted on said framework in position for undercutting the coal to be removed, means for mov+ ing said framework in a fired path, a reci n'ocable coal-breaking pick on said framework behind said cutter for breaking down the coal, and an endless conveyor mounted on said framework in position for engaging the broken down coal and removing it, said breaking down pick and said conveyor performing their respective functions as the said cutter is advanced to form a kerf.

2-37. In a mining machine the combination with framework comprising relatively movable sections, of means mounted on one section for cutting a horizontal groove in the material to be mined, means mounted on the other section for cutting a vertical groove in said material, and picking means mounted on said last-named section in post tion to act transversely of the vertical groove to break down the material above the horizontal groove and back of the vertical groove.

38. In a mining machine, the combina tion with framework comprising two base sections each adapted to rest on the floor of a mine chamber adjacent an upright mine wall, of means on the forward section for guiding the rear section along the same path of travel as the forward section, cutting mechanism mounted on the forward section, means for driving said cutting mechanism, means for moving said forward section along the mine wall to effect the feeding of said cutting mechanism, dislodging mech anism mounted on the rear section, means for operating said dislodging mechanism while said rear section remains stationary on the floor of the mine chamber and the forward section is moving forwardly, and mechanism for moving the rear section along the forward section to adjust the said dislodging mechanism to a new position.

39. In a mining machine, the combination with a main frame, of a supplemental frame slidably connected thereto, cutting mechanism carried by said main frame, means for operating said cutting mechanism, dislodging mechanism carried by said supplemental frame, means for operating said dislodging mechanism, and rope winding mechanism connected between said frames for effecting the movement of said supplemental frame together with said dislodging mechanism at intervals along said main frame toward said cutting mechanism on said main frame.

40. In a mining machine, the combination with a movable frame, of a kerf cutter mounted thereon, means for driving said kerf cutter, means for moving said frame to feed said kerf cutter, a breaking device slidably connected to said frame, means for operating said breaking device during the feed of said kerf cutter, and means for returning said breaking device to its initial position relative to said frame.

-11. In a mining machine, the combination with a frame, of a kerf cutter mounted thereon, means for driving said kerf cutter, means for moving said frame to feed said kerf cutter, a rod rigidly connected to said frame to extend backwardly therefrom, dislodging mechanism mounted on said rod and slidable along the same relatively to said frame, means for operating said breaking device to break down material adjacent the kerf cut by said kerf cutter, and means for moving the breaking device bodily along said rod relatively to said frame and toward said kerf cutter to restore the breaking device to an initial position relative to said frame.

I 42. In apparatus of the character set forth, the combination of a frame adapted to travel along a coal face, cutter mechanism mounted on said frame and adapted to cut vertical kerfs in the coal transverse to the face thereof, a reciprocable coalbreaking device mounted on the frame, means for adjusting said breaking device horizontally and vertically for the purpose of attacking the coal between the planes of such vertical kerfs at different heights as may be required, and mechanism for actuating said breaking device.

43. In a coal mining mechanism adapted to travel continuously along the normal front face of a coal bed and to form a relatively shallow horizontal kerf and to remove the coal positioned in the vertical lines by a blow-striking action, the combination of a frame adapted to be moved continuously along said normal front face, a cutter carried by the frame for forming a single relatively shallow horizontal kerf which is continously lengthened while the machine is in operation, and a blow-striking coal-breaking pick movable bodily on lines parallel to the lines of advance of the kerf cutter and arranged to break down the coal in the vertical lines of said kerf and separated from the overlying material and also separated from its native bed on the innermost vertical lines of the kerf, said pick being adapted to form a transversely advancing face intersecting the planes of the front face by imparting blows in optionally varied directions at points distributed over said transversely advancing face.

41 in a mining machine, the combination with kerf cutting mechanism, of framework for supporting the same, dislodging mechanism mounted on said framework to follow said cutting mechanism at intervals, means for operating said dislodging mechanism during the stopping periods thereof and while said kerf cutting mechanism is moving forward, and means for moving the dislodging mechanism forward at intervals alternating with such stopping periods.

l5. In a mining machine, the combination with supporting framework, of a kerf cutter mounted thereon, means for driving said kerf cutter, means for moving a portion of said framework to feed said kerf cutter, dislodging mechanism mounted on another portion of said framework adapted to be held stationary during the feed of said kerf cutter, means for operating said dislodging mechanism during the stopping periods thereof and while said kerf cutter is being fed, and means for restoring the dislodging mechanism to its initial position relative to said kerf cutter at intervals alternating with the stopping periods and after the dislodging mechanism has broken away matetoward said kerf ni sm, a supplemental frame s'lidaibly coning mechanism mounted on said supplenected to said first-named frame and adapted to follow the latter at intervals, dislodgmental frame, means for operating said dislodgin mechanism during the continuous forward feed of said kerf cutting mechanism, and means for effectin intermittent forward. movement "of said supplemental frame together with the dislodging mechanism mounted thereon toward said kerf cut ting mechanism for new positions of dislodging operations.

4-7. In a mining apparatus of the class described, the combination of a frame adapted to be moved while in operation along the normal front face of a nativecoal bed,

. means engaging said frame to hold it to predetermined lines of travel along said face,.a horizontal kerf cutter carriedby said frame, and a blowstriking coal-breaking pick movable bodily on lines parallel to-the lines of advance of the kerf cutter and. arranged to break down the under cut coal and form a transversely advancing face positioned in vertical planes intersecting theplanes of the front coal face and to optionally apply blows in different directions at points distributed over the said transverselyadvancing face.

48. In a mining apparatus ofthe class described, the combination of. a frame adapted to be moved along and close to the front face of a native coal bed, means engaging said. frame to hold it to predetermined lines of travel, a horizontal kerf cutter carried by said frame, a tool holder movable bodily on lines parallel to the lines of advance of the kerf cutter, and a blow-striking coal-breaking pick mounted on said holder and arranged to break down the coal behind the kerf cutter and form a chamber with a transversely advancing wall extending vertically from the horizontal kerf, said pick being adapted to impart blows in optionally varied directions at points distributed over said transversely advancing face.

49. In a mining apparatus of the class described, the combination of a frame adapted to be positioned close, and to be moved parallel, to the normal front face-of a native coal bed, means to hold the frame to predetermined lines while advancing along the face, an inward projecting horizontal kerf cutter carried by said frame, a tool holder mounted to travel bodily simultaneously with the coal cutter along said front face, a

blow-striking coal-breaking ick mounted on said tool h olderand arranged to break down the coal behind said cutter and form a chamber with a transversely advancing wall, said pick being arranged tov impart blowsto said transversely advancing wall at points distributed vertically and horizontally over its face, and pow'er-actuated feeding means arranged to exert draft on said frame and the pick mounted thereon.

50. Ina coal mining apparatus adapted to be moved bodily, while operating, on

lines close and parallel to the normal front face of a native coal bed, the combination of means for cutting a horizontal kerf in the coal, a conveyer havin its forward lower end positioned relative y behind the kerf cutter to receive broken down coah'a power actuated blow-striking coal-breakin picklike tool positioned to extend for operation to break down the coal adjacent the receiving end of said conveyer, to form a gradually advancing wall with a vertical face in planes intersecting the vertical planes of the normal front faceof the coal, said pick being inversely adjustable and adapted to strike blows at points distributed over the face of said transversely advancing wall,

means supporting the kerf cutter and-the 95 pick, means connecting their supports together, and means for advancing them together bodily along the front face of coal.

51. In a machine for undercutting, breaking down and loading coal, the combination with framework movable in a path substantially parallel to a coal face, of a low-down laterally projecting horizontal kerf cutter on said framework for undercutting the coal to be removed, means for, driving said kerf cutter,means for moving said framework to effect feed of said kerf cutter, a blow-striking coal-breaking pick behind said kerf cutter and adjustably spaced therefrom on said framework, and means for removing the broken down coal, said breaking down and moving means performing their respective functions as the kerf cutter isadvanced to form the kerf.

52. In a mining machine, the combination with asupporting frame adapted to have a rectilinear path of travel, of cutting mechanism mounted thereon and movable bodily therewith, said cutting mechanism extending from one side of said supporting frame in position to act on an upright mine wall along a path of travel parallel to the path of travel of said supporting frame, means path of travel as said first-named frame, means for limiting the forward and backward movements of said additional frame along said first-named frame, and restrict ing the relative movements of said additional frame within predetermined limits relatively to said first-named frame, cutting mechanism mounted on said additional frame and'extending from the side thereof above the path of travel ofsaid first-named cutting mechanism, means for driving the cutting mechanism on said additional frame, and mechanism for moving said additional frame together with the cutting mechanism carried thereby forward step by step.

53. In a mining machine, the combination with supporting framework, of an undercutting kerf-cutter mounted on the forward portion of said framework and extending laterally therefrom, an upright kerf-cutter mounted on said framework and extending laterally from said framework to cut a kerf in an upright mine wall above the underkerf, a pick machine mounted on said framework in a positionto act on the cut body of material above the under-kerf and back of the upright kerf from the floor to the roof of the mine chamber todislodge the cut body of material, and loading apparatus extending diagonally across the said framework toward loading position from a receiving position adjacent the floor of the mine chamber back of the upright kerf-cutter and below the range of action of said pick machine.

54. In a mining and loading machine, the combination with supporting framework, of

an under-cutting kerf-cutter mounted thereon, a transverse kerf-cutter mounted on said framework in position to cut an upright kerf above the under-kerf, a pick machine mounted on said framework in position to act on the body of cut material back of the upright kerf and above the under-kerf up to the roof. of the mine chamber and to the depth of the transverse kerf, and loading apparatus mounted on said framework and extending toward that side thereof remote from the mine wall from a receiving position adjacent the floor of the mine chamber back of the upright kerf-cutter and below the range of ing a stopping period of said framework, means for driving said transverse kerf-cutter during such feed thereof, means for controlling the starting and stopping of said framework, means mounted on said framework in position to act on the out body of material above the under-kerf and back of the transverse kerf to dislodge such cut material, andloading apparatus mounted on said framework and extending toward loading position from a receiving position back of the transverse kerf and below the range of action of said dislodging means.

56, In a mining and loading machine, the combination with supporting framework, of a single horizontal kerf-cutter mounted on said framework, means for driving said kerfcutter, propelling mechanism for said framework to secure feed of said horizontal kerf-cutter, a single upright transverse kerfcutter, means for operatin said transverse XGI'f-Ctlttel' relatively to said framework to cut an upright kerf above the under-kerf, a pick machine mounted on said framework in position to act on the cut body of material to dislodge the same above the under-kerf and back of the upright kerfyand loading apparatus mounted on said framework in position to extend toward loading position from a receiving position adjacent the floor of the mine chamber back of the upright kerf and approximately below the range of action of said pick machine.

57. In a mining and loading machine, the combination with supporting framework, of an undercutting kerf-cutter mounted on said framework, an upright transverse kerf-cutter mounted on said framework, means for operating said kerf-cutters to cut a body of material remaining integral with the unmined mass at its upper and rear ends, a pick machin mounted on said framework in position to dislodge such cut body of ma terial from said unmined mass up to the roof of the mine chamber and back to the depth of the upright kerf, and loading apparatus mounted on said framework in position to automatically receive the dislodged material and convey it toward loading position.

58. In a mining and loading machine, the combination with supporting framework, of an undercutting kerf-cutter extending laterally from said framework in position to cut a kerf approximately in the plane of the floor of the mine chamber, an upright transverse kerf-cutter mounted on said framework in position to cut a kerf above the underkerf, means for operating said kerf-cutters to cause the first-kerf-cutter to cut a kerf in advance of the transverse kerfs, and to cause the transverse kerfs to be cut at intervals in spaced-apart positions along the mine wall, a pick machine; mounted on said framework in position to dislodge the material above the undenkerf and back of the upright transverse kerf up to the roof of the mine chamber and to the depth of said upright kerf, endless flight conveyer mechanism mounted on said framework in a position toextend toward an elevated loading position from a receiving position adjacent the floor of the mine chamber, and a device mounted on said framework in position to move over the smooth floor formed by said under-kerf-cutter and move the dislodged material into the receiving end of said endless conveyer mechanism from the place where it falls upon being dislodged by said pick machine.

59. In a coal mining machine, the combination with supporting framework comprising two sections relatively movable but confined to predetermined relative limiting positions, of a cutting tool mounted on one of said sections and movable bodily therewith, dislodging mechanism mounted on the other section and movable bodily therewith, means for operating said cutting tool including the continuous forward feed thereof,and means for controlling the forward movements of the said other section relatively to the forward section to secure stoppingperiods at intervals for operation of said dislodging mechanism.

60. In a coal mining machine, the combination with supporting framework, comprising two sections having limited relative movement but permanently connected together in fixed relation with the relative limiting positions predetermined, of 'kerfcutting mechanism mounted on the forward section and movable bodily therewith, means for operating said kerf-cutting mechanism including feed thereof by continuous forward movement of said forward section, dislodging mechanism on the rear section, means for moving the rear section forward relatively to the forward section, said rear section having stopping periods at intervals while said forward section continues its forward movement, and means for operating the dislodging mechanism during the stopping periods. I

61. In a miningmachine, the combination with supporting framework, of a. cutter mounted on said framework in position to under-cut a body of coal, a second cutter mounted on said framework in position to out such body of coal transversely of the plane of the undercut and transversely of the face of the mine wall, said second cutter being initially out of engagement with the coal, means for operating said cutters including the feed of each, and means for moving the said framework along the mine 'wall'to effect the feed of the under-cutter and to move the transverse cutter to newpositions at intervals along the mine wall.

4. A machine for under-cutting, break ing-down andloading coal, the combination with framework movable along a path substantially parallel to a coal face, of a laterally projecting horizontal kerf-cutter on the framework to cut an under-kerf the bottom of which is approximately in the plane of the floor of the. mine chamber, means for moving said framework along a predetermined path, a pick machine behind said cutter on said framework acting by percussive blows to break down the coal at the mine wall above said under-kerf, and loading apparatus extending toward an elevated loading position from a receiving position on said framework adjacent the plane of the under-kerf back of the under-cutting kerfcutter and below the range of actionv of said breaking-down means.

63. In a mining mechanism adapted to travel continuously along the normal front face of a coal bed and to form a relatively shallow horizontal kerf which extends on longitudinal lines inward from the front face and on transverse lines along said face and to also form a chamber which widens vertically from the horizontal kerf and is gradually elongated transversely along the face and has at its forward end a trans versely advancing vertical wall in planes intersecting the walls of the normal front face of the coal, the combination of a frame movable continuously along said normal front face, an inward projecting horizontal rerf cutter carried by the frame, a tool holder carried by said frame, a blow-striking coal-breaking pick mounted on said holder and adjustable as set forth to impart blows to the coal at optionally selected points distributed vertically and longitudinally over the said transversely advancing longitudinal face.

64C. in a mining mechanism adapted to tavel continuously along the front face of a coal bed and form a single relatively shallow horizontal kerf and to dislodge the coal remaining in the vertical lines of said l-rerf and form parallel to the face a gradually elongating transverse chamber by inter mitting coal dislodging blows which sepa- 'ate the undercut coal by cleavage from the overlying material and by cleavage separate itfrom the solid mass beyond it, t 1e combination of a. frame, means for moving it along said normal front face, a cutting meclr anism carried by the frame which forms a single relatively shallow horizontal kerf, a blow-striking coal-breaking pick arranged to impart blows to the coal and form behind the kerf cutter a chamber with a gradually advancing forward wall and to break the coal above the kerf from the solid material above it and also break it from the solid native coal behind it, said coal breaking pick Home and adjustable and operable indeocndent of the kerf cutter, a bearin ad- L D stable on said frame and having means i the sliding of said breaking mec iism for actuating the latter, and a conveyer on the frame for on gaging and removing the broken-down coal. 66. The combination in a coal cutting and breakingdown machine, of a main frame adapted to be moved parallel with a coal face, a kert cutter mounted on said frame 'ng kerfs in the coal at an angle to the front face thereof in different places along the face of the coal according to the g'iosition of the machine, a reciprocable breaking down device mounted on said main frame and adjustrl'ile and operable independent of the kerf cutter, a bearing for supporting and guiding the breaking-down device, said bearing being adjustable on said frame to shift the axis of the breaking-down device in vertical and in horizontal planes, and mechanism for actuating the breakingdown device.

(37. 'ilhe combination in a coal cutting and lu'eal-dng-doivn machine, of a main frame adapted to be moved parallel with a coal face, a kerf cutter mounted on said frame for cutting a he f in the coal at an angle to the front face thereof, a reciprocable breaking-down device mounted on said main frame above said kerf cutter and adjustable and ope able independent of the kerf cutter, a bearing adjustable on said frame and having means for guicing the sliding of said breaking-down devi e, mechanism for actuating the la ter, and a conveyor on the frame for engaging and removing the broken-down coal.

68. The combination in a coal. cutting and breaking down machine, of a main frame adapted to be moved parallel with a coal face, a kerf cutter mounted on said frame for cutting kerfs in the coal at an angle to the direction of movement of said frame in different places along the face of the coal according to the position of the machine, a reciprocable breaking down device mounted on a universal pivotal support, and a support for said pivotal support on said main frame and adjustable relative to said kerf cutter.

69. In apparatus of the character set between such planes at various heights as may be required.

70. In a mining and loading machine, the combination with a frame, of core-cutting mechanism connected thereto, means for operating said core-cutting mechanism includfeeding movement thereof, a conveyer connected to said frame in position to receive dislodged material and capable of operating in initial position at the floor of the mine chamber, and means for moving the conveyor along the feeding path of travel of said core-cutting mechanism.

71. The combination of a main frame movable along a coal face, a horizontally projecting cutter to undercut the coal, a receiving plate occupying a position in the plane of the kerf beneath the undercut coal, a conveyor extending from said receiving plate away from the coal face and mounted on said frame to follow the lines of travel of said undercutter, motor and power mechanism on said frame in advance of said conveyor, and means for breaking down the -oal adapted to attack the coal above the conveyor and on vertical planes at an angle to the front face of the coal.

72. The combination of a main frame movable laterally along a coal face, cutting apparatus projecting from said frame in position to undercut the coal, means on said frame outside the bounding lines of the coal face for moving the frame and cutting apparatus along the face of the coal, and a coal-breaking pick carried by said frame and arranged to impart blows on the coal on upright planes approximately at right angles to the front face of the coal.

78. The combination of a main frame movable laterally along a coal' face, cutting apparatus projecting from said frame and comprising means to undercut the coal, means on the frame outside the boundary lines of the coal face for moving t e frame and the undercutting means along the face of the coal, an extension from said frame to a receiving position in the plane of the undercut, an endless conveyor mounted on said frame and movable bodily therewith, means for operating said conveyor to transfer dislodged material from said receiving extension toward loading position, and a coalbreaking pick carried by said frame and adapted to form a free face on the coal inside of and at an angle to its normal front face and said pick being arranged to impart blows to such a free face while bodily advancing with the cutting apparatus.

74. In a machine of the character described, the combination with a frame, of means movable relatively thereto for cutting a horizontal kerf in the material to be mined, means for cutting a vertical lrerf, and picking means operating from the ma chine and acting transversely to the vertical kerf for breaking down the material.

75. In a mining machine, the combination with a traveling base member, of a horizontal' rotary cutter, a vertical rotary cutter, and picking means acting transversely to said vertical cutter for breaking down the material.

76. A mining and loading machine comprising a supporting frame, kerf-cutting mechanism mounted thereon, means independent of the movement of said frame for dislodging the material adjacent the kerfs produced by said kerf-cutting mechanism, and mechanism mounted on said frame for automatically sliding the dislodged material over the floor of the mine toward loading position.

77. In a mining and loading machine, the combination with mechanism for dislodging material from a mine wall comprising means for producing an under kerf, of a frame for supporting said dislodging mechanism, loading apparatus connected to said frame, and a device mounted on said frame in spacedapart relation to said dislodging mechanism in position to extend from said frame toward the mine wall to operate in the plane of the under kerf for moving dislodged material onto said loading apparatus from the position assumed by said material after being dislodged.

78. In a mining and loading machine, the combination with supporting framework, of mechanism mounted thereon for producing kerfs in intersecting planes in a mine wall, means mounted on said framework and extending rearwardly therefrom for breaking down. the material bounded by said kerfs,

and apparatus comprising an endless traveling conveyer for automatically taking the dislodged material from the floor of the mine chamber and transferring it toward loading position.

79. A mining and loading machine comprising a supporting frame, of mechanism mounted thereon for producing kerfs in intersecting planes in a mine wall, means for dislodging material bound by said kerfs,a conveyor mounted on said frame and extend ing to a receiving position near the floor of the mine chamber, and automatic means for taking the dislodged material from the floor of the mine chamber and moving it onto said conveyer.

80, A mining and loading machine com prising a supporting frame, kerf-Cutting mechanism mounted thereon, a pick machine mounted on said frame for breaking the cut material to dislodge the same onto the floor of a mine chamber adjacent said frame, a conveyer mounted on said frame, and means mounted on said frame for mechanically transferring onto said conveyer the said ma terial on the floor.

81. A mining and loading machine comprising a supporting frame, kerf-cutting mechanism mounted thereon, means mounted on said frame near said kerf-cutting mechanism for dislodging the material adjacent the kerfs produced by said kerfcutting mechanism, a conveyor mounted on said frame and extending to a. receiving position near the floor of the mine chamber and adjacent said f aims, and means on said frame for automatically transferring the dislodged material from the floor onto said conveyer.

82. A mini and loading machine comprising a supporting frame, kerf-cutting mechanism thereon, a pick machine mounted on said frame near said kerfarutting mechanism to break down the cut material onto the floor adjacent said frame, and loading apparatus mounted on said frame for taking the broken down material off the floor and moving it toward loading position.

83. A mining and loading machine comprising a supporting frame, kerf-cutting mechanism mounted thereon, means independent of the movement of said frame for dislodging the material adjacent the kerfs produced by said kerf-cutting mechanism, and mechanism mounted on said frame for automatically sliding the dislodged material over the floor of the mine along the mine wall toward loading position.

84. A mining and loading machine comprising a supporting frame, kerf-cutting mechanism mounted thereon, mechanism mounted on said frame near said kerf-cutting mechanism to dislodge the cut material onto the floor of the mine chamber adjacent said frame, a conveyor on said frame extending to a receiving position substantially at the floor of the mine chamber, and means mounted on said frame for sweeping the dislodged material from the floor onto said conveyer.

85. A mining and loading machine comprising a frame, kerf-cut-ting mechanism mounted on said frame, means for moving said frame and said cutting mechanism bodily to effect feeding of said cutting mechanism, means for actuating said cutting mechanism during the forward feed of the latter, breaking mechanism connected to said frame and movable bodily therewith during the forward feed thereof to act on the material extending back from said cutting mechanism, mechanism for effecting intermittent operation of Said breaking mechanism auto-

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