US2027456A - Mining machine - Google Patents

Description

Jan, 14, 1936. W, SLQANE MINING MACHINE Original Filed March 3, 1953 6 Sheets-Sheet l Jan, 14, 1936. w W. SLOANE MINING MACHINE Original Filed. March 3, 1933 .6 Sheets-Sheet 2 smANE MINING MACHINE Original Filed March 3, 1933 6 Sheets-Sheet 4 W. W. SLOANE MINING MACHINE Original Filed March 3, 1933 6 Sheets-Sheet 5 Jan. 14,-1936. w, w, SLOANE MINING MACHINE Original Filed March 3, 1933 6 Sheets-Sheet 6 Patented Jan. 14, 1936 NITED STATES PATENT OFFICE MINING MACHINE Application March 3, 1933, Serial No. 659,522 Renewed April 25, 1935 21 Claims.

This invention relates to improvements in mining machines of the track mounted type adapted to out a kerf adjacent the mine roof or mine floor or at various intermediate positions with respect thereto and has among other objects to provide a new and improved mining machine of the class described constructed with a view towards utmost efficiency and ease of operation, compactness, ruggedness, and adaptability to varying mining conditions.

My invention may be more clearly understood with reference to the accompanying drawings wherein:

Figure 1 is a top plan view of one embodiment of my invention with parts broken away and in section;

Figure 2 is an enlarged longitudinal section of the forward portion of the device shown in Figure 1 showing several of the details of my invention;

Figure 3 is an enlarged plan view of the device shown in Figure l with the gear covers removed and certain parts shown in a horizontal section;

Figure 4 is an enlarged plan view of the forward portion of the device illustrated in Figure 1, showing certain parts in horizontal section not shown in Figure 3;

Figure 5 is a sectional view taken substantially along line 5-5 of Figure l;

Figure 6 is an enlarged vertical section showing certain details of the cutting mechanism not shown in Figure 2;

Figure 'l is a fragmentary sectional view taken substantially along line 'l'! of Figure 6; and

Figures 8 and 9 are diagrammatic views of the mining machine showing the cutter bar positioned for cutting kerfs in the mine wall at varying elevations with respect to the mine bottom.

Like reference characters refer to like parts throughout the various figures.

Referring now in particular to the drawings, the embodiment of my invention illustrated includes a main frame or truck It carried on track wheels ii and axles ii. A turntable I3 is provided on the forward portion of the truck Ill and forms a support means for a cutting element, generally indicated by reference character M.

The cutting element 14 is supported on the turntable E3 in a pair of widely spaced upstanding parallel guides it for vertical adjustment with respect to said turntable in a manner which will hereinafter be more fully described. The cutting element M includes a motor E6 of an ordinary electrical typesecured to an elevator frame ll extending forwardly therefrom and adjustably supported by the parallel spaced guides IS. A cutter frame I8 is carried forwardly of the elevator frame I? for rotational movement with respect thereto about an axis disposed longitudinally thereof. A cutter head is is supportedby the cutter frame I8 for movement towards and away from said cutter frame and carries a projecting cutter bar 26. The cutter bar 20 is supported by a cutter bar support member 2| in a usual manner, which cutter bar support member is journaled within the cutter head 19 for pivotal movement with respect thereto in a suitable manner. Suitable locking means (not shown in detail) are provided for locking the cutter bar 20 in various fixed positions of angular adjustment with respect to the cutter head I9 in a manner well known to those skilled in the art.

The truck I0 is carried on the axles l2, l2 for adjustment about axes extending longitudinally and transversely thereof. Said truck may be propelled at a high speed for moving the mining machine from working place to working place or at a lower feeding speed for sumping the cutter bar 29 into the coal by means of a suitable system of reduction gearing, which will not be herein described in detail since it is no portion of my present invention. The reduction gearing for propelling the truck [0 is actuated by a motor 23 supported on the truck l0 rearwardly of the turntable l3. The motor 23 may also drive a suitable feed drum (not shown) through a suitable system of reduction gearing which may be used as an auxiliary means for sumping the cutter bar 28 into the coal when desired. Said motor also forms a means for turning the turntable it through a suitable gear train, not herein described since it is no portion of my present invention, for feeding the cutter bar 20 across the face of the coal or positioning or holding said turntable and the cutting element It in fixed angular relation with respect to the truck Ill.

Referring now in particular to the details of the cutting element i4 and certain novel features of nrv invention, a pair of parallel spaced shafts 24, 24 are journaled in the elevator frame I! and extend longitudinally thereof. Pinions 25, 25 are keyed to the shafts 24, 24 adjacent opposite ends thereof and mesh with vertical racks 26, 26 secured to the parallel spaced guides I5, l5. Guide portions 21, 21, formed integral with the elevator frame ll, abut the inner faces and ends of the parallel spaced guides I5, l5. Retaining strips 28, 28 are secured to said guide portions and abut suitable shouldered portions formed in the outer sides of the parallel spaced guides l5, l5 for hold- 55 ing the pinions 25, in mesh with the racks 26, 26 and permitting adjustable movement of the elevator frame |1 along said guides. A worm gear 29 is keyed to each shaft 24. The worm gears 29, 29 are meshed with and driven from worms 30, 30 keyed adjacent opposite ends of a transversely extending shaft 3| journaled in the elevator frame H in a suitable manner. The worms 30, 36 and worm gears 29, 29 are of the self-locking type for holding the elevator frame H in any desired position of adjustment along the parallel spaced guides |5, |5.

The transversely extending shaft 3| has a pair of oppositely facing bevel gears 32, 32 freely mounted thereon adjacent the central portion thereof. The bevel gears 32, 32 are meshed with and driven in opposite directions by a bevel pinion 36 freely mounted on a stud shaft 34 carried in the elevator frame H in a suitable manner. A friction clutch member 35, of an ordinary construction, is feathered on the transversely extending shaft 3| and has oppositely disposed frusto-conical friction faces adapted to engage suitable friction faces, herein preferably shown as being formed internally of the bevel gears 32, 32 for driving the shaft 3| from either of said bevel gears and thus forming a reversible drive connection for said shaft. A spur gear 36 is keyed on the hub of the bevel pinion 33 and is meshed with and driven from a spur pinion 31 keyed on a longitudinally extending shaft 39. The longitudinally extending shaft 39 is journaled in the elevator frame H in a suitable manner and has a spur pinion 49 keyed on its rearward end which is meshed with and driven from an armature pinion 4|.

The forward portion of the elevator frame H is enlarged and extends beneath the turntable |3 and forms a bearing support for the cutter frame l8 (see Figures 2, 3, 4, and 5). A shouldered portion 43, formed in the inner periphery of a neck 44 extending rearwardly of the cutter frame I8, is adapted to engage and have bearing support with the enlarged forward portion'of the elevator frame. l1. Segments 45, 45 of an annular ring abut the rearward end of the neck 44 adjacent opposite sides of the elevator frame I1 and are secured to said neck in a suitable manner, such as cap screws 46, 46. The segments 45, 45 abut a shouldered portion 41 formed in the enlarged portion of the elevator frame H for securing the cutter frame |8 to said elevator frame for rotational movement with respect thereto about an axis extending longitudinally thereof.

Suitable means are provided for locking the cutter frame I8 in various fixed positions with respect to the elevator frame H which may be of any type well known to those skilled in the art but which, as herein shown, comprise a spring pressed pin 49 carried in the enlarged forward portion of the elevator frame l1 and adapted to engage any one of a plurality of apertures 56, 50 formed in the segments 45, 45. The spring pressed pin 49 is disengaged from any of the apertures 59 by means of suitable lever mechanism, generally indicated by reference character 5| in a usual manner.

The cutter head H1 is supported for slidable movement towards or away from the cutter frame I 8 in a manner similar to that shown in an application filed by William T. McCullough, October 25, 1929, Serial No. 402,505, which issued as Patent No. 1,938,850, on December 12, 1933; that is, a pair of parallel spaced guides 53, 53 extend from the cutter frame I8 and are adapted to be registered with a pair of parallel spaced guides 54, 54 extending from the cutter head |9. A suitable retaining member 55 is secured to each parallel spaced guide 53 and abuts the forward face of each parallel spaced guide 54 for holding the parallel spaced guides 54 in registered engagement with the parallel spaced guides 53 and permitting slidable movement of the cutter head H) with respect to the cutter frame |8.

A threaded member 56 is pivotally secured to the cutter head l9 adjacent its forward end. The threaded member 56 is adapted to be threaded within a sleeve 51. The sleeve 51 is externally threaded and is threaded within a sleeve 58, which sleeve forms the hub of a helical gear 59 journaled within the cutter frame l8 and held from thrusting movement with respect thereto. The helical gear 59 is meshed with and driven from a helical gear 60 on the forward end of a longitudinally extending shaft 6|. The shaft 6| is journaled within the cutter frame |8 in a suitable manner and has a spur gear 63 secured to its rearward end. Said spur gear is adapted to be selectively driven from the motor I6 in reverse directions without reversal thereof, in a manner which will hereinafter be more fully described, for moving the cutter head l9 towards and away from the cutter frame l8 and adjusting the position of the cutter bar 29 with respect to the mine bottom.

With reference now in particular to the mechanism for rotating the cutter frame |8 about an axis extending longitudinally of the cutting element l4 and positioning the cutter bar 20 for adjustment for cutting in various planes beneath the level of the truck l9 including planes adjacent the mine bottom below the level of the track and in an inverted position above the level of the truck IO for cutting in various elevated horizontal planes including planes adjacent the mine roof as is illustrated in Figures 8 and 9, a sleeve member 64 is journaled in the elevator frame |1. Said sleeve member is disposed coaxially with but spaced from the longitudinally extending shaft 39 for rotation with respect to said shaft independently thereof. A worm gear 65 is keyed adjacent the rearward end of the sleeve member 64 and is meshed with and driven from a worm 66 keyed intermediate the ends of a transversely extending shaft 61 journaled in the elevator frame H in a suitable manner. The worm 66 and worm gear 65 are of the self-locking type for locking the sleeve member 64 from rotation when not driven by said worm and worm gear.

Friction clutch members 68, 68 are carried on the shaft 61 adjacent opposite ends of the worm 66 for free rotation with respect thereto and have spur gears 69, 69 keyed thereto. Said spur gears are meshed with spur gears 19, 10 keyed to the hubs of the bevel gears 32, 32. Friction clutch members 1|, 1| are feathered adjacent each end of the transversely extending shaft 61 and are adapted to selectively engage the friction clutch members 66, 68 for driving the shaft 61 from either of the spur gears 69, 69. The friction clutch members 1|, 1| are shifted by suitable shifting mechanism (not shown) and may be interlocked so that only one clutch may be engaged at a time. Thus a reverse frictionally controlled drive connection has been provided for the transversely extending shaft 61 and sleeve member 64.

A sleeve 13 is feathered on the sleeve member 64 for slidable movement with respect thereto and has a spur gear 14 thereon, said spur gear herein preferably being shown as formed integral with said sleeve. The spur gear 14 is adapted to be selectively meshed with the spur gear 63 on the rearward end of the longitudinally extending shaft 6| for driving said shaft.

A spur pinion I is formed integral with the forward end of the sleeve 13 and is adapted to be selectively meshed with planetary pinions it, it carried in a cage TI. The cage 71 is in turn secured to the cutter frame l8 in a suitable manner; as, for instance, pins l8, 18. 'The planetary pinions l6, 76 are meshed with an internal gear l9 secured to the inner periphery of the enlarged forward portion of the elevator frame ll.

When the spur pinion is meshed with the planetary pinions 16, 16 and driven from the motor l6 in one direction or another, said planetary pinions will rotate within the internal gear l9 which is held in a fixed position with respect to the elevator frame ll. This will cause rotation of the cage T! which will in turn rotate the cutter frame l8 about the axis of rotation of the sleeve member 64.

The sleeve 13 may be shifted along the sleeve member 64 in a suitable manner for engaging the spur pinion l5 with the planetary pinions iii and simultaneously disengaging the spur gear it from the spur gear 63 and vice versa. As herein shown, the shifting means for the sleeve 13 comprise a clutch yoke carried in a suitable grooved portion formed'in the sleeve i3 and adapted to be actuated by a clutch fork ti pivoted on a rock shaft 82 disposed beneath said sleeve. The clutch fork 8| has an operating link t3 pivotally connected to one side thereof and adapted to extend upwardly and rearwardly therefrom which is pivotally connected adjacent its rearward end to a crank 84 secured to a ro'ck shaft 85 extending transversely of the elevator frame ll. The operating link 83 is so formed as to permit said member to clear the rock shaft 35 when the crank 84 is pivotally moved from one side of said shaft to the other. A hand lever 36 is provided on the end of the rock shaft 35 for actuating said rock shaft. When the crank 84 and operating link 83 are in a dead center position, as is indicated in Figure 6, the spur gear id is meshed with the spur gear 63 for driving the longitudinally extending shaft 6!, and said gears are locked in a meshed position by said crank operating link and the clutch fork 8| in an obvious manner. When the crank 84 and operating link 83 are in an opposite dead center position, the spur gear 14 is disengaged from the spur gear 63 and the spur pinion i5 is meshed with the planetary pinio'ns 16, 16 for rotatably moving the cutter frame i8 and cutter bar 28. Said spur pinion is held in such relation by means of said crank operating link and the clutch fork 8!.

It may thus be seen that a new and improved means, of a simplified and eificient construction, has been provided for rotatably adjusting the cutter bar 26 about a horizontal longitudinal axis at a frictionally controlled speed in opposite directions without reversal of the motor it, for positioning said cutter bar for cutting in various parallel horizontal planes including planes adjacent the mine roof or mine bottom. It may also be seen that inasmuch as the cutter bar 26 is vertically adjustable with respect to the cutter frame It and inasmuch as the entire cutting element i l is vertically adjustable with respect to the turntable is, that the range of cutting of said cutter bar is increased to such an extent that all dead spaces in the mine wall are eliminated so said cutter bar may cut a horizontal kerf in the coal or cut out a dirt band in the mine wall at any position therein from the mine floor to the mine roof.

The longitudinally extending shaft 39 has a bevel pinion 8T keyed to its forward end which meshes with and drives a bevel gear 88 secured to a spider 89, which spider in turn is provided with a hub 90 journaled in the cutter frame l8. The hub 96 is internally splined and is adapted to be engaged by a splined shaft 9|. The opposite end of the splined shaft Si is engageable with a splined sleeve 92, which splined sleeve is jo'ur naled within the cutter bar support member 2%! in a suitable manner and has a cutter chain sprocket 93 keyed thereto. The cutter chain sprocket 93 in turn meshes with a cutter chain 94. for driving said cutter chain about the cutter bar 29 in a closed orbital path. With this arrangement the cutter chain 94 may be driven from the motor it in all positions of adjustment of the cutter bar 20 with respect to said motor and the arrangement for driving said cutter chain and moving said cutter bar towards or away" from the cutter frame 18 is such as to take up a minimum amount of vertical space and permit a maximum amount of vertical adjustment of said cutter bar.

With reference now in particular to Figures 2, 6, and '7, and several other of the novel features of my invention, the cutter frame I8 is so constructed as to form an oil reservoir 95 for retaining oil for the lubrication of the bearings for the hub 93 of the spider 89 and for the lubrication of the bevel gear 88 and bevel pinion 3i. When the cutter bar 28 is in a lowered position, as is shown in Figure 2, it may be seen that the bevel pinion 81 and bevel gear 88 will run in oil and be amply lubricated. Since it is impractical to fill the reservoir 95 to such an extent that the bevel pinion iil and bevel gear 528 may be continuously lubricated when the cutter bar 26 is in an inverted position, a new and improved means has been provided for lubricating said gear and pinion when in such a position. Said means includes a disk 98 of a relatively large diameter secured to the hub 99 of the spider as adjacent the end thereof, which is its lower end, when the cutter bar 20 is in an inverted position. The

disk 96 is provided with a plurality of vanes on its surface, which is its upper surface, when the cutter bar 29 is positioned to cut adjacent the mine roof as is shown in Figure 6. The disk 96 is in alignment with an opening 98 of a passageway 99 formed in the cutter frame it and extending upwardly from said disk to a position disposed above the bevel gear 88 when the cutter bar 2G is in an inverted position. An oil conductor Mt leads from the passageway 99 to a position disposed above the bevel gear 88 for dripping oil thereon. When the cutter bar is positioned as shown in Figure 6, rotation of the rotatable disk 96 will impel oil through the opening 98 of the passageway 95 and effect movement of oil through said passageway to and through the oil conductor Iiiil in an obvious nianner to the bevel gear 88 for lubricating said bevel gear and the bevel pinion 81.

While I have herein shown and described one form in which my invention may be embodied, it

will be understood that the arrangement of the various parts and the construction thereof may be altered or changed without departing from the spirit and scope thereof. Furthermore, I do not wish to be construed as limiting myself to the specific embodiment illustrated, excepting as it may be limited by the appended claims.

I claim as my invention:

1. In a mining machine, a support, cutting mechanism carried thereby including a motor, a frame member disposed forwardly of said motor, a cutter frame carried by said frame member for rotatable movement with respect thereto about an axis disposed longitudinally of said frame member and having a cutter bar projecting therefrom carrying a cutter chain for movement thereabout, means driven by said motor for driving said cutter chain about said cutter bar comprising a shaft extending longitudinally of said frame member, and means driven by said motor for cage having operative connection with said cutter frame, a pinion carried by said cage and meshing with said internal gear, and a gear on said sleeve meshing with said pinion.

2. In a mining machine, a support, cutting mechanism carried thereby including a motor, a frame member disposed forwardly of said motor, a cutter frame carried by said frame member for rotatable movement with respect thereto about an axis disposed longitudinally of said frame member and having a cutter bar projecting therefrom carrying a cutter chain for movement thereabout, means driven by said motor for driving said cutter chain about said cutter bar com prising a shaft extending longitudinally of said frame member, and means driven by said motor for rotating said cutter frame about an axis disposed longitudinally of said frame member comprising a gear driven by said shaft, a sleeve coaxial with and encircling said shaft for a portion of its length and driven by said gear, an internal gear secured to said frame member and held from movement with respect thereto, a cage having operative connection with said cutter frame, a pinion carried by said cage and meshing with said internal gear, and a gear on said sleeve meshing with said pinion, and means for locking said cutter frame in fixed relation with respect to said frame member comprising a pin and aperture lock.

3. In a mining machine, a support, cutting mechanism carried thereby including a motor, a frame member disposed forwardly of said motor, a cutter frame carried by said frame member for rotatable movement with respect thereto about an axis disposed longitudinally thereof and having a cutter bar projecting therefrom carrying a cutter chain for movement thereabout, means driven by said motor for driving said outter chain about said cutter bar comprising a shaft extending longitudinally of said frame member, and means driven by said motor for rotating said cutter frame about an axis disposed longitudinally of said frame member comprising a gear driven by said shaft, a sleeve coaxial with and encircling said shaft for a portion of its length and driven by said gear, an internal gear secured to said frame member and held from movement with respect thereto, a cage having operative connection with said cutter frame, a plurality of pinions carried by said cage and meshing with said internal gear, and a gear on said sleeve adapted, to be. selectively meshed with said pinions.

4.. In a mining machine, a support, cutting mechanism carried thereby including a motor, a frame member disposed forwardly of said motor, a cutter frame carried by said frame member for rotatable movement with respect thereto about an axis disposed longitudinally of said frame member and having a cutter bar projecting therefrom carrying a cutter chain for movement thereabout, means driven by said motor for driving said cutter chain about said cutter bar comprising a shaft extending longitudinally of said frame member, and means driven by said motor for rotating said cutter frame about an axis disposed longitudinally of said frame member comprising a gear driven by said shaft, a sleeve coaxial with and encircling said shaft for a portion of its length and driven by said gear, an internal gear secured to said frame member and held from movement with respect thereto, a cage having operative connection with said cutter frame, a plurality of pinions carried by said cage and meshing with said internal gear and a gear on said sleeve adapted to be selectively meshed with said pinions, and means for locking said cutter frame in fixed relation with respect to said frame member comprising a pin and aperture lock.

5. In a mining machine, a motor, a frame, a

carried by said cutter frame, and means driven by a said motor for selectively moving said cutter frame about said longitudinal axis of said support comprising a shaft driven by said motor, a sleeve disposed coaxially of and encircling said shaft for a portion of its length, a geared connection between said sleeve and shaft and a reducing drive connection between said sleeve and cutter frame comprising an internal gear secured to said frame and held from rotation with respect thereto, a cage having operative connection with said cutter frame, a pinion carried by said cage and meshing with said internal gear, and a gear on said sleeve adapted to mesh with said pinion.

6. In a mining machine, a motor, a frame, a 1

cutter frame carried by said frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar having a cutter chain movable thereabout carried by said cutter frame, and means driven by said motor for selectively moving said cutter frame about said longitudinal axis of said support comprising a shaft driven by said motor, a sleeve disposed coaxially of and encircling said shaft for a portion of its length, a geared connection between said sleeve and shaft and a reducing drive connection between said sleeve and cutter frame comprising an internal gear secured to said frame and held from rotation with respect thereto, a cage having operative connection with said cutter frame, a plurality of pinions carried by said cage meshing with said internal gear, and a gear on said sleeve adapted to be selectively meshed with said pinions.

7. In a mining machine, a motor, a frame, a

cutter frame carried by said frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar having a cutter chain movable thereabout carried by saidcutter frame, and means iii) shaft extending transversely of said elevator frame,

driven by said motor for selectively moving said cutter frame about said longitudinal axis of said support comprising a shaft driven by said motor, a sleeve disposed coaxially of and encircling said shaft for a portion of its length, a geared connection between said sleeve and shaft including "reverse gearing and a reducing drive connection between said sleeve and cutter frame comprising :an internal gear secured to said frame and held :from rotation with respect thereto, a cage having operative connection with said cutter frame, a pinion carried by said cage and meshing with said internal gear, and a gear on said sleeve adapted to mesh with said pinion.

8. In a mining machine, a motor, a frame, a cutter frame carried by said frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar having a cutter chain movable thereabout carried by said cutter frame, and means driven by said motor for selectively moving said cutter frame about said longitudinal axis of said support comprising a shaft driven-by said motor, a sleeve disposed coaxially of and encircling said shaft for a portion of its length, a geared connection between said sleeve and shaft including reverse gearing and a geared connection between said sleeve and cutter frame comprising an internal gear secured to said frame and held from rotation with respect thereto, a cage having operative connection with said cutter frame, a plurality of pinions carried by said cage meshing with said internal gear, and a gear on said sleeve adapted to be selectively meshed with said pinions.

9. In a mining machine, a motor, a frame, a cutter frame carried by said frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar having a cutter chain movable thereabout carried by said cutter frame, and means driven by said motor for selectively moving said cutter frame about said longitudinal axis of said support comprising a shaft driven by said motor, a sleeve disposed coaxially of and encircling said shaft for a portion of its length, a geared connection between said sleeve and shaft including reverse gearing and a reduction drive connection between said sleeve and cutter frame comprising an internal gear secured to said frame and held from rotation with respect thereto, a cage having operative connection with said cutter frame, a plurality of pinions carried by said cage meshing with said internal gear, a gear on said sleeve adapted to be selectively meshed with said pinions, and means for selectively locking said cutter frame in fixed relation with respect to said frame comprising a pin and aperture lock.

10. In a track mounted mining machine, a truck, a turntable thereon, a plurality of parallel spaced vertically extending guide members supported on said turntable, a cutting element supported thereby for vertical adjustment with respect to said turntable, said cutting element including a motor, an elevator frame, a cutter frame carried by said elevator frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar carried by said cutter frame, and drive connections from said motor for elevating said cutting element in said guides and independently rotating said cutter frame comprising a shaft extending longitudinally of said elevator frame, a

a selective geared connection between said longitudinal and transverse shafts, self-locking drive means associated with said transverse shaft for elevating said cutting element in said guides, a shaft disposed in parallel relation with respect to said transversely extending shaft, a selective geared drive connection between the means for driving said transverse shaft and said longitudinal shaft for driving said parallel shaft in reverse directions without reversal of said motor, a sleeve coaxial with said longitudinal shaft, a geared connection between said parallel shaft and sleeve and a selective reducing drive connection between said sleeve and cutter frame for selectively rotating said cutter frame in reverse directions without reversal of said motor.

11. Inatrackmounted mining machine, a truck, a turntable thereon, a plurality of parallel spaced Vertically extending guide members supported on said turntable, a cutting element supported thereby for vertical adjustment with respect to said turntable, said cutting element including a motor, an elevator frame, a cutter frame carried by said elevator frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar carried by said cutter frame, and drive connections from said motor for elevating said cutting element in said guides and independently rotating said outter frame comprising a shaft extending longitudinally of said elevator frame, a shaft extend ing transversely of said elevator frame, a selective geared connection between said longitudinal and transverse shafts, self-locking drive means associated with said transverse shaft for elevating said cutting element in said guides, a shaft disposed in parallel relation with respect to said transversely extending shaft, a selective geared drive connection between the means for driving said transverse and said longitudinal shafts for driving said parallel shaft in reverse directions without reversal of said motor, a sleeve coaxial with said longitudinal shaft, a geared connection between said parallel shaft and sleeve and a selective geared connection between said sleeve and cutter frame for selectively rotating said cutter frame in reverse directions without reversal of said motor comprising an internal gear secured to said frame, a cage having operative connection with said cutter frame, a pinion carried by said cage and meshing with said internal gear, and a gear on said sleeve adapted to mesh with said pinion.

12. In a track mounted mining machine, a truck, a turntable thereon, a plurality of parallel spaced vertically extending guide members supported on said turntable, a cutting element supported thereby for vertical adjustment with respect to said turntable, said cutting element including a motor, an elevator frame, a cutter frame carried by said elevator frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar carried by said cutter frame, and drive connections from said motor for elevating said cutting element in said guides and independently rotating said cutter frame comprising a shaft extending longitudinally of said elevator frame, a shaft extending transversely of said elevator frame, a selective geared connection between said longitudinal and transverse shafts, self-locking drive means associated with said transverse shaft for elevating said cutting element in said guides, a shaft disposed in parallel relation with respect to said transversely extending shaft, a selective geared drive connection between the means for driving said transverse and said longitudinal shafts for driving said parallel shaft in reverse directions without reversal of said motor, a sleeve coaxial with said longitudinal shaft, a geared connection between said parallel shaft and sleeve and a selective geared connection between said sleeve and cutter frame for selectively rotating said cutter frame in reverse directions without reversal of said motor comprising an internal gear secured to said frame, a cage having operative connection with said cutter frame, a plurality of pinions carried by said cage meshing with said internal gear, and a gear on said sleeve adapted to be selectively meshed withsaid pinions.

13. In a track mounted mining machine, a track mounted truck, a turntable thereon, a plurality of parallel spaced vertically extending guide members supported on said turntable, a cutting element supported thereby for vertical adjustment with respect to said turntable, said cutting element including a motor, an elevator frame, a cutter frame carried by said elevator frame for pivotal movement with respect thereto about an axis disposed longitudinally thereof, a projecting cutter bar carried by said cutter frame, and drive connectionsfrom said motor for elevating said cutting element in said guides and independently rotating said cutter frame comprising a shaft extending longitudinally of said elevator frame, a shaft extending transversely of said elevator frame, a selective geared connection between said longitudinal and transverse shafts, self-locking drive means associated with said transverse shaft for elevating said cutting element in said guides, a shaft disposed in parallel relation with respect to said transversely extending shaft, a selective geared drive connection between the means for driving said transverse and longitudinal shafts for driving said parallel shaft in reverse directions without reversal of said motor, a sleeve coaxial with said longitudinal shaft, a geared connection between said parallel shaft and sleeve and a selective geared connection between said sleeve and cutter frame for selectively rotating said cutter frame in reverse directions without reversal of said motor comprising an internal gear secured to said frame, a cage having operative connection with said cutter frame, a plurality of pinions carriedby said cage meshing with said internal gear, a gear on said sleeve adapted to be selectively meshed with said pinions, and means for selectively locking said outter frame in fixed relation with respect to said frame comprising a pin and aperture lock.

14. In a track mounted mining machine, a truck, a turntable thereon, a cutting element supported on said turntable comprising a motor, a frame extending forwardly therefrom, a cutter frame carried by said frame for rotation with respect thereto about an axis disposed longitudinally of said cutting element, a cutter head carried by said cutter frame for movement towards and away from said cutter frame, a projecting chain carrying cutter bar carried by said cutter head, and selective drive connections from said motor to said cutter frame and cutter head for rotating said cutter frame and moving said cutter head towards and away from said cutter frame comprising a longitudinal shaft, a sleeve coaxial aerewith, a geared connection from said shaft to said sleeve, a pair of spaced gears carried by said sleeve 'for slidable movement therealong, a cage, a planetary pinion carried thereby, a connection between said cage and cutter frame, an internal gear carried by said frame and meshed with said planetary pinion, said planetary pinion being adapted to be meshed with one of said gears on said sleeve, a longitudinal shaft carried by said cutter frame and extending through said cage, a gear on one end of said shaft, another shaft disposed perpendicularly to said shaft and adapted to be translationally moved with respect to said cutter frame through a suitable drive connection driven by said last-mentioned gear, a connection between said shaft and cutter head, and another gear on the opposite end of said shaft adapted to be meshed with one of said slidable gears on said sleeve.

15. In a track mounted mining machine, a truck, a turntable thereon, a cutting element on said turntable comprising a motor, a frame extending forwardly therefrom, a cutter frame carried by said frame for rotation with respect thereto about an axis disposed longitudinally of said cutting element, a cutter head carried by said cutter frame for movement towards and away from said cutter frame, a cutter bar carried by said cutter head having a cutter chain movable thereabout, a shaft for driving said cutter chain about said cutter bar, a threaded shaft disposed forwardly of said cutter chain drive shaft having connection with said cutter head and being translationally movable with respect to said cutter frame, and means driven by said motor for translationally moving said threaded shaft with respect to said cutter frame, driving said cutter chain drive shaft and rotating said cutter head comprising a shaft extending longitudinally of said cutter frame, a sleeve coaxial with said shaft, a selective reverse geared drive connection from said shaft to said sleeve, a drive connection from the forward end of said shaft to said cutter chain, a selective drive connection from the forward end of said sleeve for moving said cutter bar towards or away from said cutter frame including a shaft spaced from and parallel to said sleeve and adapted to be selectively connected therewith, a sleeve driven from the forward end of said shaft, a threaded shaft carried thereby and having connection with said cutter head and another drive connection from the forward end of said sleeve for rotating said cutter head comprising a gear carried for slidable movement with respect thereto, a pinion adapted to mesh therewith, a cage having operative connection with said cutter frame carrying said pinion and an internal gear secured to said frame member and meshing with said pinion.

16. In combination with a mining machine, a

frame, a cutter frame carried thereby for rotatable movement with respect thereto, a cutter bar carried by said cutter frame having a cutter chain movable thereabout, means for driving said cutter chain about said cutter bar comprising a shaft having operative connection with a cutter chain drive sprocket, a gear for driving said shaft, another gear for driving said first-mentioned gear, said cutter frame being so formed that it forms an oil reservoir for lubricating said gears when said cutter bar is positioned in a downward horizontal position with respect to said frame for cutting adjacent the mine bottom, and means for lubricating said gears when said outter bar is in an inverted horizontal position with respect to said frame for cutting adjacent the mine top comprising a rotatable disk coaxial with said shaft and an oil passageway leading from the rim of said disk to said gears.

17. In combination with a mining machine, a

frame, a cutter frame carried thereby for rotatable movement with respect thereto, a cutter bar carried by said cutter frame having a cutter chain movable thereabout, means for driving said cutter chain about said cutter bar comprising a shaft carrying a cutter chain drive sprocket, a gear on said shaft, another gear positioned for rotation about an axis coaxial with the axis of rotation of said cutter frame for driving said first-mentioned gear, said cutter frame being so constructed as to form an oil reservoir for lubricating said gear and pinion when said cutter bar is positioned in a downward horizontal position with respect to said frame, and means for lubricating said gears when said cutter bar is in an upward horizontal position with respect to said frame comprising a disk disposed adjacent the lower portion of said cutter frame when said cutter bar is positioned for top cutting and driven from said first-mentioned gear, and an oil passageway leading from said disk upwardly to said gears.

18. In combination with a mining machine, a frame, a cutter frame carried thereby for rotatable movement with respect thereto, a cutter bar carried by said cutter frame having a cutter chain movable thereabout, means for driving said cutter chain about said cutter bar comprising a shaft carrying a cutter chain drive sprocket, a bevel gear on said shaft, a bevel pinion positioned for rotation about an axis coaxial with the axis of rotation of said cutter frame for driving said first-mentioned gear, said cutter frame being so formed that it forms an oil reservoir for lubricating the bearings for said shaft and bevel gear and pinion when said cutter bar is positioned in a downward horizontal position with respect to said frame and means for lubricating said, bevel gear and pinion when said cutter bar is in an upward horizontal position with respect to said frame comprising a passageway leading from the lowermost inner portion of said cutter frame to said bevel gear and pinion and a disk coaxial and rotatable with said shaft and disposed in alignment with one entrance of said passageway.

19. In an apparatus of the class described, a frame, a second frame rotatably mounted on said frame, a shaft in said second frame, means for driving said shaft including a gear thereon, said second frame having a lower portion thereof forming an oil reservoir in which said gear runs when said shaft is in one position with respect to said first frame, and means for lubricating said gear when said frame has been rotated so that said shaft is in an inverted position and said gear 10 out of said reservoir comprising a rotatable disk on an end of said shaft opposite said gear and an oil passageway leading fro-m the rim of said disk to said gear.

20. In an apparatus of the class described, a frame, a second frame rotatably mounted on said first-mentioned frame, cutting mechanism carried by said second frame, means for driving said cutting mechanism comprising a shaft and reduction gearing for driving said shaft including a gear mounted on said shaft, said second frame having a lower portion thereof forming an oil reservoir for lubricating said reduction gearing when in one position with respect to said firstmentioned frame, and means for lubricating said reduction gearingwhen in an inverted position with respect to said first-mentioned frame comprising a rotatable disk on said shaft and an oil passageway leading from the rim of said disk to said reduction gearing.

21. In a mining machine, a frame, a cutter frame rotatably movable with respect to said frame, cutting mechanism carried by said cutter frame including a projecting cutter bar, means for driving said cutter mechanism comprising a shaft and reduction gearing for driving said shaft, said cutter frame forming an oil reservoir for lubricating said gears when in one position with respect to said frame, and means for lubricating said gears when said cutter frame .is turned so said gears are out of said reservoir comprising a rotatable disk on said shaft and an oil passageway leading froin the rim of said disk to said gears.

WILLIAM W. SLOANE.

CERTIFICATE OF CORRECTION.

Patent No. 2,027,456. January 14, 1936.

WILLIAM W. SLOANE.

ertified that error appears in the printed specification of g correction as follows: Page '7, second and that the said 10, claim 19, after the Word "gear" insert is;

e read with this correction therein that the same may 1' the case in the Patent Office.

s 3rd day March, A. D. 1936.

It is hereby c the above numbered patent requirin column, line Letters Patent should b conform to the record 0 Signed and sealed thi Leslie Frazer (Seal) Acting Commissioner of Patents.

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