US1378359A - Assig-hoe - Google Patents

Description

N. D. LEVIN.

MINING APPARATUS.

APPLICATION FILED FEB. 23. 1915. RENEWED JULY 15. 1920.

Patented May 17,1921.

4 SHEETS-SHEET 1.

QN M $1.11 e A y a. @N MEN m v Witnesses N D. LEVIN.

MINING APPARATUS. APPLICATION FILED FEB. 2a. 1915. RENEWED JULY I5, 1920.

N. n. LEVIN. v MINING APPARATUS, APPLICATION FILED FEB. 23 1915- RENEWED JULY 15. I920.

Patented May 17, 1921.

4 SHEETS--SHEET 3.

/ VENTOR.

wQ fi A TTORNEY.

N. D. LEVIN,

MINING APPARATUS. APPLICATION FI'LED FEB.23, I915. RENEWED JULY 15, 1920.

Patented May 17, 1921.

4 SHEETS-SHEET inrrso srrrs ATENT OFFICE.

NILS JD. LEVIN, 0F COLUMBUS, OHIO, AS$IG-NOR TO THE JEFFREY MANUFACTURING COMPANY, OF COLUMBUS, OHIO, A. CORPORATION OF OHIO.

MINING- APPARATUS.

intense.

Specification of Letters Patent.

Patented May 17, 1921.

Application filed February 23, 1915, Serial No. 9,972. Renewed July 15, 1920. Serial No. 396,590.

T 0 all whom it may cmwam Be it known that I, NILs D. LEVIN, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Uhio, have invented certain new and useful Improvements in Mining Apparatus, of which the following is a specification, reier-- once being had therein to the accompanying drawings.

This invention relates to mining apparatuses of the class in which each comprises a cutting mechanism which is bodily movable transversely across the front of a room while cutting and a wheeled truck for carrying the mechanism from one place of use to another. According to usual earlier practice it has been necessary to unload the cut ting mechanism from the truck and then to move it into cutting position by means of bars, cables, etc; and then, after the completion of the cutting operation, it has been necessary to again move the machine by means of bars, cables, etc, back to the position from which it can be reloaded. riccording to the present invention, the truck is so constructed that the mining machine can be unloaded therefrom into any desired cutting position or reloaded thereonto from any desired cutting position without any intermediate movements being necessary.

The preferred form of machine embodying the invention belongs to that class in which each has the movements of its cutting mechanism guided and largely controlled by means of a wheeled truck which remains on a track throughout the cutting operation and is preferably anchored against movement. rlarlier machines falling within the above given definition have been proposed prior to my present invention, but in these earlier machines dependence was placed largely or entirely on the truck itself for the carrying of the weight of the entire apparatus, including the cutting mechanism, not only during transportation but also during the cutting. With the Weight carried by the truck it was impractical to permlt the cutting mechanism to project beyond the outlines of the base through more than a certain relatively small distance, and consequently the width of the room or entry which could be cut by one of the earlier machines was quite limited.

One object of my invention is to provide an apparatus having the truck parts so arranged and connected that the machine can be loaded directly onto the truck by power from any cutting position Without being first moved along the floor into a predetermined loading position.

Another object of the invention is to provide an apparatus in which the cutting mechanism can be carried on the truck during transportation and in which it is movable horizontally therefrom without breakmg its connection therewith to rest entirely upon the floor and be moved horizontally under the guidance and control of the truck to cut a horizontal kerf from one side to the other of a relatively wide room. Other objects of the invention are to provide certain improved structural and mechanical features whereby the above mentioned objects are carried out to the best advantage. A further object is to provide a mining machine truck adapted to carry a mining machine and having devices permitting loading of a machine from any position and preferably also adapted for guiding and co trolling the machine when it is supported independently of the truck.

In the accompanying drawings I have shown, for purposes of illustratiomone embodiment of the invention, but it will be understood that many changes may be made in the construction shown without departing from the spirit of my invention.

Of the drawings,

Figure 1 is a side View of the complete apparatus, with the cutting mechanism in operative position.

Fig. 2 is a plan view of the machine as shown in Fig. 1.

Fig. 8 is a side view of the apparatus, with the parts so arranged as to be adapted for transportation.

Fig. 4 is a plan view of the main base part of the truck with some of the mechanism carried directly thereby. In this view the swinging supporting and guiding devices for the cutting mechanism are removed.

.Fig. 5 is a plan view of the supporting taken partly in section along the line 77 of Fig 6.

Fig. 8 is a fragmentary side view show' ing the cutting mechanism in one of its intermediate positions.

Fig. 9 is a fragmentary side View taken oppositely to Fig. 3 and showing the means for locking the mining machine to its supporting pan.

Figs. 10 and 11 are fragmentary views showing details of the supporting and guiding devices for the cutting mechanism.

Figs. 12 and 13 are diagrammatic side views showing'the positions which the parts of the apparatus assume during the move ment of the cutting mechanism into 0perative position.

Figs. 14 to 24 are diagrammatic plan views showing the steps incident to the op eration of the machine in the cutting of a kerf across the front of a room.

and 26 are diagrammatic plan views showing the positions which the machine assumes when operated according to another plan.

Referring to the drawings, A represents a track which is preferably laid down along the center of the room or entry, or other space, across the front of which the cutting operations are to be carried on. 13 represents the mining apparatus as a whole, it comprising a cutting mechanisnrC having driving and feeding devices at D, a truck or abutment H mounted on the track A, and devices E, F and G pivotally connected with the truck or abutment H and adapted to be engaged by the cutting mechanism for loading and unloading and preferably also serving to guide the cutting mechanism during its horizontal cutting movements.

The truck H, to which the skid or guide devices E, F and G are connected, has a main body frame consisting of the longitudinal side bars 1, 1 and the cross bars 2, and 41. The body is mounted upon the axles 7 and 8 to the ends of which are secured the track wheels 9, 9 resting upon the rails 10, 10 of the track A. The axles are mounted in bearings 6, 6, which are adjustable longitudinally by means of the screws 6, 6. The two axles are connected together by means of a chain 11, which passes Over sprocket wheels secured to the ends of the axles. At the other end of the rear axle 8 there is secured another sprocket wheel over which passes a chain 12. This chain extends upward and rearward and engages a sprocket wheel 1% loosely mounted on a transverse shaft 12 which extends through a casing 5 mounted on the truckframe. The parts mounted in. the casing 5 and immediately adjacent thereto are preferably the same as those shown in my copending application lormining machine trucks Serial No. 825,369, filed March 17, 1914. A

very brief description of these parts will here be sufi'icient. 15 is a power receiving bevel pinion mounted on a longitudinal shaft 15 at the rear end of which is anolhcr bevel pinion 15'. This bevel pinion 15 meshes with the two bevel pinions l5 and 15 loosely mounted on the said shaft 12'. Between the respective pinions i5" and 15 and the shaft there are provided disk clutches 15 and 15 which can be thrown into engagement alternately by means of the lever 11-. The sproc. .hccl L" can be connected with the sha 1i" by means of the clutch which is enrolled by the swinging lever 123. It will he secn that the gears 15 and 15' together with the clutches l5 and 15 constitute a reversing mechanism whereby the motion of the power receiving gear 15 can be transmitted to the axles and track wheels in cilhcr direction.

The skids or controlling devices for the cutter or cutting mechanism have a connection with the truck or alnitmcnt frame which permit them to move relatively to the truck in a fixed path; and as the cutter is connected vith the skids it also can bc caused to move in a corresponding fixed path. Preferably ihc connection with the truclr is a vertical pivotal one, and this is the construction illustrated. Secured to the fr: no of the truck is a sheet metal plate in near the center of which there is preferably 9. large circular aperture. Dolled or and to the plate 16 below the central part them is a circular spider 17. Around the per cry of the spider thcrc are mounted rolievs 18, 18 rotatable on horizontal radial pivot pins 19, 1.). The spider 17 has spokes Ll. which carry at the center an apcri'urcd huh Q2. 20 is a lint metal plate posilioucd to rest directly upon the rollers is. i and it is provided with a depending flanged ring."

23 firmly riveted in place. i pivot lll 24. is provided which is seated in the up ture in the aforesaid hi'illow hub 22? which closely fits the inner surface oi" the ring ihe pivot ocl; is held in place by means of a hell; i an it is pi'orided at 26 with a flange which engages the ring 23 to hold the plate i'l) and the parts connected with it against movement upward away from toe truck.

The guiding and controlling means is constructed to permit the cutter or mining machine to be supported on the ground (13 floor iiulependcntly of tee truck. As shown. in addition to having a 'vcrli ,al pivoiul con-- nection with the truck frame. it prcfcrahl has two horizontal pivotal joints l) which its element are connected together. The details of the guiding and controlling means will. now be described.

The plate 20 is provided along its sides with reinforcing angle liars 57, 7. these parts constituting the device E mentioned above. At the forward end of the device E and secured to the angle bars 27, 27 are brackets 27", 27 and through apertures in these brackets there extends a transverse pivot pin 27*.

The aforesaid device F comprises two longitudinal side bars 29, 29, a rear trans verse connecting plate 30 and a front transverse connecting plate 30 Secured to the under side of the plate 30 are brackets 30 which. are apertured to receive the aforesaid pivot pin 27". It will be seen that by the construction described the two devices are horizontally pivoted so as to be relatively movable. Riveted to the plate 30 is a tail plate 31 which extends rearward. The plate is recessed or notched to receive the rear part of the said plate 31. Secured to the forward ends of the bars 29 are brackets or shoes 32, 32 to which the aforesaid plate is secured, this plate being curved longitudi ally, as clearly indicated in Figs. 1, 3, 8 and 11.

The aforesaid device G comprises a bottom plate 3% and side angle bars 35, This device G carries the cutter 3'. e. the cut ting mechanism and the driving and feeding devices therefor. The pan Gr is provided at its forward end with shoes 44, i l, which are rounded at their forward ends. At the rear end of the pan G there are provided means for pivotally connecting the pan with the forward end of the device F. Preferably the parts of the guiding and controlling means in addition to having horizontal pivotal joints, also engage one another telescopically so that they can rest one upon another and be supported on the truclr. in the construction shown the pan G is slidable relatively to the devices F and E. At the rear end of the pan are hoolr-lilre castings 45, 4-5, which rest upon and embrace the vertical walls of the angle bars 29, 29, as shown in detail in Figs. 10 and 11. The hooks 45, 45 can slide along the bars 29, 29, but when the pan is in its outermost position, with the hooks lowermost, the extensions 4-6 formed on the hooks will enter sockets 47 provided in the shoes 32, 32, as indicated in Fig. 8, thus providing a horizontal pivotal joint. For holding" the hooks in the sockets suitable pins 18 are provided which can be put in place or removed as desired.

The extension 4.6 on one of the castings 45 (as, for instance, the right hand one) also serves in con iunction with an upright stop to on the bed frame of the truck to prevent movement of he machine about the vertical pivotal axis when the apparatus is adjust-.

any particular sort, but there are many advantages incident to the use of a complete separately operable mining machine which can be connected to the guiding and control ling devices or which can be disconnected from them and used independently. l have shown a standard mining machine of the short wall type although the invention is not limited in this respect. The machine shown is similar to that shown and described in my copending application for mining machines. Serial No. 825,8"?0, filed i l larch 17, 191%. if or details of the construction reference can be had to the said application, and it will be sufiicient here to refer briefly to the more important parts. 37 is the main nine of the mining machine and 38 is the main driving motor which is suitably mounted on the frame. The cutting mechanism indicated, as a whole by 39 it being of the well known chain typo. Power is transmitted to the driving sprocket 39 for the cutter chain through the gears 88 38", 38 and 38v he vertical. shaft on which the sprocket wheel 39 and the 38 mounted also carries a worm 88 which meshes with a worm wheel 38'"- on, a transverse shaft suitably mounted at t. rear of the machine. lioosely mounted on this shaft is a cable drum which can be connected to the shaft by means of the friction clutch lf 2 controlled by the hand wheel 42'. at?) is a cable wound upon ti is drum 4i). and adapt ed to be used in the .ianner to be hereinafter described. d0 is another drum which is mounted on suitable transverse shaft &0. This sh f" driven from the transverse shaft which carries the drum by means of the gears lO ffO and 40. The d0" is loosely mounted on the shaft and can be connected thereto by means of the friction clutch d0 controlled by the hand wheel 40 it will be observe-d that the gearing is such that the two drums 4:9; and 40 will be driven at differs t speeds the di 1 l2 being); driven relatively rapid and the rum 4. 0 relatively slowly. ell is a cable wound upon the drum i0 and adapted to be used in the manner hereinafter described.

lhe pan of sufficient length to support the miuin machine from to end, as clearly shown in 8. lhe mining machine is slidahle alon the pan and its movement outward is l mited by means of the stop shown in K movement inward is limited by the surfaces 45* formed hoolr castings d5. temporarily loclrn the mining machine in its rearmost ion with respect to the pan, for a purpose which will prcsently appear, there is provided a linl 89* connected to the rear part of the machine anti adapted to be slipped over an upwarc jecting lug 39 on the pan. This lug- 39 provided with an aperture 39 into which one of the pins 4.8 can be inserted to hold the link against disengagement from the lug. These parts are clearly shown in Fig. 9.

For locking the machine in the position shown in Fig. 3 there is provided a latch 37 adapted to elite 1. socket 27 on the device It will be seen tlnt the connection between the truck and the cutter or mining;- machine through the devices E, F and G always remains unbroken, and the said dc vices are always ready to guide the machine onto the inch from any position in which it may be independentlz; upported.

t9 is a cable reel cl" sui )lG form mounted on the rear part of the truck .rl. The reel is driven by iii-ans of a rope which passes over the sheave O secu: ed to the she t 12 i and sheave 51 secured to the reel ti The main cable. which is wounr. upoi reel. is indicated by 52, this cable extending outward along the track to'a Ski n oernienent electric conductor to 1 attached. Current is supplied the cable 52 and from the reel to the motor oi the mining machine by means of the long flexible cable 5-3 which permits movements of the mining: machine in the manner to be hereinafter described.

For n riding the cable 1-3, X 'ch is wound upon thedrurn 42. a suitable s vst in of guide As shown this coniprises a sheave 5-4; rotatable about a hori sheaves is provided.

zontel ax s, a sheave 54. which otatable about a horizonal axis and which can swing' bodily around a. vertical axis of the ina chine over either of which the cable (:ULPZKSS according to the position of the sheave. 5%. From one or the other of the sheaves or the cable can be extended :l orwarc its forward end can be secured to one 1; books 56 or 0112 the hoolts 5T, QCQQl' l lllls" to the position of one machine on the su .portine and guioingdevices. of be- Cl'lC-C to one of 53 can l n4. 1 Inbred l atta the cable Figs. 1 the mud \D baclnvard into on the device The rope 41 wound on the drum 4L0 can also be arriet d over the said sheaves 5S and 59 for use in a way to be described.

Fig. 3 shows the machine with the parts arranged for transpof ation from pl c place about the mine. The pow r re -iv1 bevel pinion ot the truck is in n meet with th large bevel gear ot the mining machine. Tl e mining machine 1R0 tor operated and power is transmitted ntral tracl: A therein to a position such of using! as that indicated in Fig. ii. and there it is stopped and the chain 12 is removed. thus inalzi 1g it possible for the mining; machine and the supporting; devices thcreil'or to be swung horizontally about the vertical pi;- otal axis. Then the cable-l3 isu; wound from the drum ei-I'Z and carriei'l iii-mind the sheave: Fl and aid is attached o the booh .id'i and the drum is turned by means of powe from the motor 38 and the machine is drawn "forward a short distance to the position in dieated diagrannnati nllv in Fig. ill. This slight torivaiwl movement of the machine discngagcs it ro1n the stop 4-6 and porn it to be swun about the vertical pivot. soon as the machine is diserugagcd from 1" t is swung so that the )urls lie in V positions indicated in Fig. 53. g )1 the cable is contiruwd and the minul nc, with its pan. is moved outward a position indicated in l iu'. lo. l t wil snow that the link 39" ensue uses the pan G to travel rorward, .vii achinc. it about the time that the o j vitv about the pivotal axis at 27 to t sitious shown U1 Fig". 12. The wind- .r: J.

1c cable 4-? is continued and the pan e machine continue to inn 0 'l' i'warrl. the ward end of the n sliding); along the. ground on the shoes l-l and the rear end oi the par sliding down the inclined section l supported on the castings This movement is continued. the parts moving; throueh the position shown in Fig. 12- and finally reaching: the position shown in Fig); 1?. Then the pins 48, 4-8 are inserted to lock the pan to the guide device F.

ll ben the parts have reached this position, as shown in Fig. 17 the truck is loched in position by blocking the wheels thereof: and by putting in place a jack (3] with its lower end engaging the socket 2'? formed in he pivot blocl; 24-. and with its upper end aging the root.

In this way the truck .1 owever, as the lower end of the jack cuages a non-rotary element there is no interference with the tree swinging movement of the mining machine and the guiding devices therefor. l i ith the parts in the position as shown, the cable 43 is detached from the hook 4-6 and the cable a1 is car ied forward from the drum 40 and is connected to the hoot: 57. The link 39 is removed from the lug-39 and power is applied to rotate the drum ll) and thus draw the machine bodily forward along the pan to the positions indicated in Figs. 18 and 19. it will be understood, course, that in moving forward the cutters are operated and act to make a sumping out into the coal, as indicated. After the cutting mechanism has cut its way into the coal for its entire length the feeding is stopped and the cable 41 is removed from the hook and is car 'ied over the guide sheave 59 and to a jack at the other side of the room, as indicated by 62 in Fig. 20. The winding the cable is again started and the cable now serves to draw the machine transversely across the room, it swinging about the vertical pivotal axis on the truck. Successive positions are shown in Figs. 21 and 22.

After the out has been completed the cable is removed from the sheave 58 and the cable $3 is again brought into use. This cable is carried forward around the same sheave 59 and back into engagement with the hook 60 on thetruck body. This arrangement of the cable is shown diagrammatically in Fig. 23 and in detail in Figs. and The pins 46, as are removed to re lease the pan and the cable is then wound to draw the machine backward. The machine first moves backward along the pan, and then the pan itself, with the machine, slides up the inclined guiding device F. The engagement of the pan with the tail plate 31 causes the lower end of the device F to swing upward and the moving of the pan and machine backward along the device F is continued until finally the center of gravity is so positioned that the device F swings upward and the rear parts of the pan and machine swing downward, so that ultimately the position indicated in Fig. 24 is reached. ..'hen the machine can be swung ?".UQD(l into the position'shown in Fig. 14:

finally moved backward to cause the V s to be locked against swinging. After t as has been done the chain 12 can be again put in place and the whole apparatus is ready for transportation to another place for use.

it will be understood that the two cables and 4:1, with the respective winding d2 uns thereior are provided so as to give dillerent rates of movements for the machine. l' i hen the machine is being moved oil an the truci; and made ready for cutting and when it is being moved backward onto the truck it can be moved relatively rapidly. For eifecting these movements the cable 43 is used, which is wound upon the relatively rapidly rotating drum 42. However, when the machine is being used for cutting coal it must. be fed relatively slowly, and for these slow feeding movements use is made of the cable ll which is wound on the relatively slowly rotating drum 40.

The machine can be used in ways other than that which I have described above. One of these ways is illustrated in Figs. 2-5 and 26. The cutting mechanism is moved from the truck in a way similar to that already described and repetition will not be necessary. However, instead of swinging the machine only slightly to one side, as shown in Fig. 15, it is swung to a position approximately at right angles to the track, as shown in Fig. 25. The cutting mecha nism can be extended to its outermost position before it comes into contact with the coal face. Then, with the parts properly locked, as heretofore described, the cable 41 is carried around the face of the room and is held by suitable jacks 63, 64, and 66. The cable is wound and the machine is forced to swing bodily around its vertical pivotal axis on the truck, the jacks being removed successively as the machine reaches them in its swing. A11 intermediate position of the machine is shown in Fig. 26. When the machine has finally completed a semi-circular cut it can be redrawn onto the truck in the manner already described.

It will be observed that in the use of this apparatus, whether according to the method first described or some other method, the mining machine is always ready for instant reloading onto the truck without any tedious intermediate movements to bring it into loading position. The swinging skids can be swung to any angle so as to accommodate the truck to angular position of the machine relative to the vertical longitudinal axial plane of the truck. In fact, in the preferred embodiment of the invention, the connection between the machine and the truck is never broken and all that is neces sary to el'lect reloading is to properly adjust the cables.

l urthermor, the truck is not depended upon for carrying the weight of the machine during cutting. The machine is supported directly upon the mine floor and is relatively free for movement so as to follow any in regularities. The truck, however, is made use 0t for guiding and controlling the movement or the machine. The guiding devices E, F and G can be considered constituting a radius arm pivoted at one end to the truck and secured at the other end to the mining machine. And this radius arm, while permitting relative movements of the mining machine vertically, nevertheless serves to rigidly hold it up to its work.

Heretofore, in the operation of mining machines of the short wall type, reliance had to be placed upon some specially provided parts anchored externally to the machine itself for holding the machine at the proper angle to the coal face. Sometimes reliance Was placed upon a special track, or its equivalent, parallel to the face, and sometimes upon a system of cables, or their equivalents. By the present invention I have provided a machine which is self-contained and which is held up to its work by its own constituent parts, assisted only by the main central track, which must be provided in any case.

I do not herein claim any of the novel features of construction embodied in the truck part of the apparatus by itself considered, having filed an application as a division hereof, namely, 338,205, on November. 15th, 1919, wherein I present claims relating to some of the features of novelty embodied in the truck part of the apparatus and having also filed an application, 132,682 on November 21, 1916, wherein claims are presented for others of the novel features of structure of the truck. The claims herein pertain to a kerf cutting apparatus arranged to be put in operation, and to be related to its Work, in the manner set forth, and to be taken from the truck to its working points, and to be returned thereto and transported therewith in the manner (escribed.

What I claim is:

1. In a mining apparatus for forming a horizontal kerf in the face of the coal, the combination of a transporting truck element adapted to travel over mine tracks, a kerf cutting element having a cutting mechanism and power drive mechanism and adapted to rest in a predetermined position on the truck and to move off the truck and advance bodily along the coal face to cut a kerf at the floor level, and an intermediate guiding element between the truck and cutting element movable transversely of and relatively to the truck and adapted to be engaged with the cutting element at any of several po sitions along the coal face to guide said element from any of said positions to the predetermined position on the-truck.

2. In a mining apparatus, the combination of a Wheeled truck adapted to travel over mine tracks, a complete separately operable mining machine adapted to be supported on the truck above the floor level or independently thereof at the floor level and having a horizontally projecting kerf cutting mechanism, skids connected to the truck With freedom to swing laterally in relation thereto and adapted to be engaged by the mining machine for guidance off from or onto the truck to or from any of several angular positions at the floor level in which it may be independently supported, and means for moving the machine, while it is independently supported and engaged by the skids, transversely of the truck to cut a, horizontal herf under the coal.

3. In a mining apparatus, the combination of a wheeled truck adapted to travel over nine tracks, a complete separately operable mining machine adapted to he. supported on the truck above the floor level or independently thereof at the floor level and having a horizontally projecting herf cutting nicch anism, skids connected to the truck with freedom to swing laterally in relation ihereto and adapted to be engaged by the mining machine for guidance oil from or onto the truck to or from any of several angular positions at the door level in which it may be independently supported, means for moving the machine. while it is independently supported and engaged by the skid. transversely of the truck to cut a horizontal hcrl. under the coal. and power means for moving the machine along the skids.

i. In a mining apparatus, the combinal ion of a wheeled truck adapted to travel over mine tracks. a complete separately operable. mining machine adapted to be. supported on the truck or independently thereof and having a horizontally projecting kerf cutting mechanism. skid devices conncctml to the truck with freedom to swing laterally in relation thereto and adapted. to be engaged by the mining machine for guidance oil from or onto the truck to or from any of several angular positions in which it may be independently supported. the said devices comprising at least three parts connected to gether by at least two horizontal pivoted joints. and means for movingthe machine. while it is independently supported and engaged by the skids. transversely of the truck to cut a horizontal kerf under the coal.

5. In a mining apparatus. the combination of a. wheeled truck adapted to travel over mine tracks. a complete Separately operable mining machine adapted to be supported on the truck above the floor level or independently thereof at the floor level and h avin $1 a horizontally projecting lcerf cutting mechanism, extensible skid devices connected lo the truck with freeoom to swing laterally in relation thereto and adapted to be engaged by the mining machine for guidance off from or onto the truck to or from any of several angular positions at the floor level in which it may be independently su 'iported. and means for moving the machine. while it is independently supported and engaged by the skids. transversely of the truck to cuta horizontal kerf under the coal.

6. In a mining machine, the combination of a wheeled truck adapted to travel over putting mechanism, means mine tracks, a complete separately operable mining machine adapted to be supported on the truck or independently thereo a 1d having a iorizontalry projecting kerf cutting mechanism, xtensible telescopically engaging skid devices connected to the trucl: with freedom to swing late "ally in relation thereto and adapted to be engaged by the mining machine for guidance of from or onto the truck to or from any of several angul positions in which it may be independently supported, means or moving the mac nine, while it is independent-. supported and engaged by the skids, transversely of the truck to cut a horizontal keri under the coal.

7. in a mining apparatus, the combination of a bodily movable wheel supported ahutmeLt trameadapted to be anrhorel i a fixed position, a complete separately operable mining machine having its weight supported independently of the abutment frame and having a bed frame and a cutting mechanism projecting horizontally therefrom, and means connected with the abutment and engaging; the mining machine bed frame to guide it transversely in a path fixed relatively to the abutment.

lrert 8. In a mining apparatus, the comhination of a bodily movable wheel supported abutment :Erame adapted to be anchored in a fixed position, a complete separately operable mining machine having its weight sup ported independently of the abutment trams and having a relatively fixed horizontally projecting kerf cutting mechanisn, and means connected with the abutment and engaging the mining machine to guide it trans versely in a path fixed relatively to the abutment.

9. ln a mining apparatus, the combinaion of a bodily movable wheel supported abutment irame adapted to be anchored in a fixed position, a complete separately operable mining); machine having its weight an; ported independently of the abutment frame and having; a horizontally projecting l erli connected with the mining; mu-

the abutment and engaging: clnne to guide it transversely in a pat! *elat1vely to the abutmen' to malre mechanism forward relatively to the ing means to make a sumping cut.

1.0. lln a mining apparatus, the mbination a bodily movable wheel supp ea abutment :5 nine adantcd to be anchored H1 ment to make a transverse out, and means for moving the mining machine bodily forward relatively to the guiding means to maize a sumping cut.

ii. in a mining apparatus, the combination oi? an abutm nt frame adapted to be ztllClH red in a l I w en position, complete separately operable mining n achine having itswcigl i- "ndependently oi the and having, hormont ally projecting rerr cutting mechanism. and means givotally connected with the abu ment and engaging the mining machine to "ansversely in an arcuate path guide it fixed relatii ly to the abutmen J i i l with the z gaging the mii .ng machine to gr. no t transversely in an arcuate path lined rela tively to the abutment make a transverse cut, and mean, for moving the cutting; mechaward relatively to the guiding ainsm o means to malre a sinnpingcut.

12- In ing apparatus, he combinan of a wheeled t uclr, a complete separately o mrable mining machine adap" 1 orted on the truck or indepen of and having a lnniaemtally proiecti tort mu ng mechanism, and means co tel with the truck and er gum; the min "0 nmchine while it is int d to guide it transversely ir a p tively to the truck.

14:. ln a mining; apparatus, the combination of a wl eeled nclr, a complete separately operable minin macl'iine adapted to be supported on 4i in :l or independently thereo t and h a v.: i

' ,ri'iontally pro izvtin h V n nccted with t machine lo. .I a mining tron 0 a wheeled r: tely operable in l i as suppo ted on the t1ere,i" and having a horizioir Eng liert u mechanism, an otally coi'inectcd with the W1C! ii the mining macnine 'vhen it 'Zl supported to guide 7 tr-U, a arcuat path lined relatively to 1". in a mining ap nratus, the 0 tion oi" a wheeled tru a, a corny rately operable mining machine adapted to be supported on the truck or independently thereof and having a horizontally projecting lrerit cutting mechanism, extensible devices pivotally connected with the truck and engaging the mining machine to guide it oil? from or onto the truck to or from any of several angular positions in which it may be independently supported, and means adapted to be engaged by the mining machine to cause telescoping of the said devices as the machine is moved off from or onto the trucl'.

17. In a mining apparatus, the combination of a wheeled truck, a complete separately operable mining machine adapted to be supported on the truck or independently thereof and having a horizontally projecting cuttin mechanism, and means pivotally connected with the truck and engaging the mining machine to guide it transversely while independently supported, the said means being also adapted to engage the mining machine to guide it off from or onto the truck to or from any of several. angular positions in which it may be independently supported 18. in a mining apparatus, the combination of a wheeled truck adapted to travel over mine tracks, a keri cutter adapted to be supported on the truck or independently thereof and having a horizontally projecting cutting mechanism, and means formin a connection between the truck and the one ter when the latter is supported either on the truck or independently thereof, the said means having a vertical pivotal connection with the truck and having two horizontal pivotal joints which. are disposed between the truck and the cutter when the latter is independently supported.

1.9. In a mining apparatus, the combinas tion of a wheeled trucl: adapted to travel over mine tracks, a complete separately operable mining machine adapted to be sup ported on the truck or independently thereof and having horizontally projecting cutting mechanism, and means forming a connection between the truck and the mining machine when the latter is supported either on the truck or independently thereof, the said means having a vertical pivotal connection with the truck and having two horizontal pivotal joints which are disposed between the truck and the mining machine when the latter is independently supported.

20. In a mining apparatus, the combination of a wheeled truck, a kerf cutter adapted to be supported on the truck or independently thereof and having a horizontally projecting cutting mechanism, a supporting pan along which the cutter is slidable forward and backward, and guide devices having a vertical pivotal connection with the truck and having two horizontal pivotal joints between the truck and the pan, the said guide devices serving with the pan to guide the cutter transversely when independently supported and also to guide the cutter from or onto the truck to or from any o't several angular positions in which. it may he independently supported.

21. in a mining apparatus, the combination oi a wheeled truck, a complete separately operable mining machine adapted to be supported on the truck or imlependeutly thereof and having a horizontally projecting cutting mechanism, a supporting pan along which the mining machine is slidable forward and backward, and guide devices having a vertical pivotal connection with the truck and having two horizontal pivotal joints between the truck and the pan, the said guide devices serving with the pan to guide the mining machine transversely when independently supported and also to guide said machine from or onto the truck to or from any of several. angular positions in which it may be independently su iiported.

In a mining apparatus, the comhiuution of a wheeled truck, a kerl cutter adapted to be supported on the truck or independently thereof and having a horizontally pro jecting cutting mechanism, a sup porting pan along \YfllCll the cutter slidablc forward and backward, and guide devices having a vertical pivotal connection with the truck and having two horizontal, pivotal joints between the truck and the pan, the said pan being slidable onto and oil from the truck along the said guide devices and the said guide devices serving with the pan to guide the cutter transversely when independently supported.

In a mining ap mratus, the combination of wheeled truck, a lterlf cutter adaptor to be supported on the truck or independently thereoi and having a horizontally projecting cutting mechanism, means pivotally connected with the truck and engaging the cutter when it is independently supported to guide it transversely in an arcuute path fixed relatively to the truclnand anon-rotary element on the truck in the axis of the pivotal connection and adapted to be engaged by a jack for holding the truck against movement.

2i. In a mining apparatus. the combiuation of: a wheeled truck, a liert cutter adapted to be supported on the truck or independently thereof and having a horizontally projecting cutting mechanism, extensible guide devices pivotally connected with the truck and engaging the cutter to guide it tranrversely while independently sup mrtcd, the d devices being adapted to engage the cutter to guide it oil from or onto the truck to or from any of several angular positions in which it may be independently supported,

and means on the truck for transmitting power from the mining machine to the truck wheels when the machine is supported on the truck.

25. In a mining apparatus, the combination of a laterally cutting mining machine, a Wheeled truck adapted to travel over mine tracks, and skid devices pivotally connected to the truck with freedom to swing laterally in relation thereto and adapted to be permanently engaged by a mining machine such as aforesaid for guidance of' from or onto the truck to or from any of several angular positions at the floor level in which it may be independently supported, the said devices comprising at least three parts connected together by at least two horizontal pivotal joints.

26. In a mining apparatus adapted to form an are shaped kerf, the combination of a laterally movable continuously operatin rerf cutting machine, a wheeled truck auaited to travel over mine tracks, a pan adapted to slidably support a kerf-cutting mining machine for movement forward and backward, means for positively holding the lierf ci'itting machine against movement on the pan while the cutter is at work, and guide devices having a vertical pivotal connection with the truck and having two horizontal pivotal joints between the truck and the pan, the said devices erving with the pan to guide the mining. machine transversely in relation to the truck on curved iines while supported as aforesaid.

27. In a mining apparatus adapted to form an are shaped out near the floor of the mine, the combination of a laterally movable COl'ltiilliOllSl operating kerf cutting machine; a wheeled truck adapted to travel over mine tracks, a pan adapted to slidably support a kerf-cutting mining machine for movement forward and backward, and guide devices engaging the pan and having 1i vertical pivotal connection with the truck, the said pan being slidable onto and off from the truck along the said guide devices, us for locking the lrerf cutter against .udinal movement on the pan when the f cutting mechanism is operating and the ide devices serving with the pan to ie the mining machine transversely in rt ation to the truck while the pan is oil the truck.

in a mining apparatus for cutting a hori-ziontal undercut transversely of the front face of a mine room, the combination of an abutment, means for holding the abutment against transverse movement, a complete separately operable mining machine having its weight supported independently of the abutment and having a horizontally projecting kerf cutting mechanism, and means pivotally connected with the abutment and engaging the mining machine to guide it transversely.

29. In a mining apparatus for cutting a horizontal undercut transversely of the front face of a mine room, the combination of a wheeled truck adapted to be supported on a longitudinal central track, a complete separately 0 Jerable mining machine adapted to be supported on the truck or independently thereof and having a horizontally projecting kerf cutting mechanism, and means pivotally connected With the truck and engaging the mining machine While it is independently supported to guide it transversely.

30. in a mining apparatus the combination of a kerf cutter, comprising a bed frame, a cutting apparatus and power transmittlng gearing on said bed frame, the truck, and the guide mechanism permanently engaging with the kerf cutter having a section adapted to lie approximately horizontal on the ground, an inclined section, and second approximately horizontal section on top of the truck along which sections the kerf cutter can successively move bodily while passing from a position above the truck to a posit-ion near the ground.

31. In a mining apparatus the combination of a kerf cutter, comprising a bed frame, a cutting apparatus and power transmitting gearing on said bed frame, the truck, and the guide along Which the kerf cutter can bodily move while remaining permanently in engagementtherewith, said guide being adapted to be put in different angular positions relatively to the truck while the latter remains bodily fixed and having the forward floor supported section, the inclined section and the upper horizontal section supported over the wheel base of the truck.

In a mining apparatus, the combination of the kerf cutter, comprising a bed frame, cutting apparatus and power transmitting gearing on the bed frame, the truck, and the guide with which the kerf cutter constantly engages and along which it can bodily more, said guide having a front section adapted to be supported on the ground, an inclined section and a third section supported on the top of the truck, the front section and the inclined section being respectively movable in relation to the section on the truck and the guide as an entirety being movable laterally relatively to the truck.

33. In a mining apparatus the combination of the kerf cutter, comprising a bed frame, a cutting apparatus and power transmitting gearing mounted on said bed frame, the truck, and the guide with which the kerf cutter constantly engages and along which it can bodily move, said guide comprising three sections connected together, the front section being movable longitudinally as to the second and the third sections, the third section being supported on the truck, and the second being hinged relatively to the third.

34. In a mining apparatus, the combination of the kerf cutter, comprising a bed frame, a cutting apparatus and power transmitting gearing mounted on said bed frame, the truck, and the guide with which the kerf cutter constantly engages and along which it can bodily move, said guide being formed in three sections connected together, the first section being adapted to rest upon the ground, the third section being adjustably mounted on the truck, and the second section being adjustably connected to the third and to the first.

In a minin apparatus, the combination of the kerf cutter comprising a bed frame, a cutting apparatus and power transmitting gearing mounted on said bed frame, the truck, and the guide permanently connected to and movable with the keri cutter 'reiativelyto the truck when the cutter is in operation, said guide having a front section adapted to rest upon the ground, a section pivotally connected to the truck and an intermediate section flexibly connected to both of the aforesaid sections to permit it to assume different angular operative positions rel atively to the other said sections.

36. In a mining apparatus, the combination of the kert cutter comprising a bed frame, cutting apparatus and power transmitting gearing mounted on said frame, the truck, and the longitudinally extensible guide permanently connected to the kerf cutter and formed in a series of sections one of which while engaging with the kert cutter is adapted to be superposed upon the other sections while they are all connected together.

87. In a mining apparatus, the combination of a kerf cutter comprising a bed frame, cutting apparatus and power transmitting gearing mounted on said frame, the truck, and the guide adapted to be permanently connected to the kerii cutter and made. in three permanently connected seclions, namely, a front section adapted to rest upon the ground, a section supported on the {Hull and an intermediate section adapted to be inclined relatively to both of the. other seetiens, and the first aforesaid section being longitudinally adjustable to a position where it is superposed upon the other two sections.

In a mining apparatus, the combination of the lzert cutter comprising a bed frame, cutting apparatus and power transmitting gearing mounted on said frame, the truck, and the guide adapted to engage pcrinanently with the lrerti' cutt r and to rotate around the truck while the latter is held stationary, said guide being made in a series oi sertions, each vertically movable with respect to the next and adapted to permit the kerf cutter to take either of several annula positions relatively to the horizontal and either of several angular positions relatii'ehx to the truck.

In testimony whereof, allix in signature, in presence of two witnesses.

NILS D. LEVIN.

ll itnesscs i'lnnnr C. DEAN, Dunner T. Frsrmn.

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