US1785959A - Mining apparatus - Google Patents

Description

Dec. 23, 1930. M. P. HOLMES 1,735,959

MINING APPARATUS Original Filed April 1926 3 Sheets-Sheet v1 Dec. 23, 1930. N l. P. HOLMES 1,785,959 MINING APPARATUS Original Filed April 15; 1926 3 Sheets-Sheet 2 A J 15 .3. 29 Li Z9 1930- M. HOLMES 1,785,959

MINING APPARATUS Original Filed April 13, 1926 3 She ots-Sheet 3 1 Eta/ 721707.- warrwfiffoZmew.

Patented Dec. 23, 1930 UNITED ST PATENT OFFICE MORRIS P. HOLMES, F CLABEMONT, NEW HAMPSHIRE, A SSIGNOR- TO SULLIVAN MA- CHINERY COMPANY, A CORPORATION OF MASSACHUSETTS MINING- APPARATUS Application filed April 13, 1928, Serial This invention relates to mining apparatus and more particularly to mining machines of the shear cutter type adapted to operate from the mine trackway.

An object of this invention is to provide an improved. mining I machine of the, wheel mounted type wherein the mining machine is adapted to insert a shear cut in the. coal face while guided on the mine trackway. Still another object of this invention is to provide an improved shearing machine adapted to cut kerfs in a vertical plane in the face of the coal. Still another object of this invention is to provide an improved wheel mounted shearingmachine of thepivoted cutter bar type having improved means for swinging the cutter bar, and improved means for looking the cutter bar in its adjusted position. Astill further object of this invention is to :0 provide an improved shearing machine of the self-propelled truck mounted type wherein improved means are provided for propelling the truck along the mine trackway during the cutting and transport operations. These and other objects of my invention will, however, subsequently more fully appear.

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

, In-these drawings,

Fig; 1 is a side elevation of the improved shearing machine, parts being broken away to facilitate illustration.

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

- Fig. 3 is a transverse horizontal sectional View takenjsubstantially on line 3.-3 of Fig. 1.

Fig. 4. is a developed sectional. view taken substantially on line Hot Fig. 1.

Fig. 5 is a detail sectional view of the reversible ratchet mechanism for operating the cutter bar lock the view being taken on line 55 or Fig. 4, a i Fig. 6- is a transverse horizontalsectional view illustrating. the improved reversible truck driving mechanism and {the truck drive controlling"friction, the view' being taken substantially on line 6-6 ofFig. 1. y i V Fig. 7 is a diagrammatic'view' illustrating No. 191,816. Renewed. June 18,1929.

the operating positionsof the machine during cutting.

Inthis illustrative embodiment of my invention Thave shown a truck framel mounted on wheels 2 adapted to move relative to a mine trackway 3 in the usual manner. The truck frame 1 comprises parallel. longitudi na lly extending angle members at which have fixed. thereupon a self-contained mining machine generally designated 5, herein preferably of the so-called long wall type normally slidable on its own bottom on a mine bottom and having a generally rectangular elongated machine frame (idisposed on its edge or side with its bottom plate 7 disposed in a vertical plane. The mining machine 5 is rigidly secured to the truck frame 1 by means of angle members 8 secured as by screws respectively to the angle members 4 and the machine frame. Further, the machine is provided with an elongated plane cutter bar 9 about which a cutter bit carrying cutter chain 10 adaptedv to be circulated, the cutter chain being driven by means of a usual drive sprocket 11 as clearly shown in Fig; 4. The cutter chain drive sprocket 11 is disposed at the front end of the machineframe 6 and is rotatable about a: horizontal axis extending transversely of the machine frame in a well known manner. As shown, the cutter bar 9 is pivoted, as at 12, on an axis coincident with the axis of the cutter chain sprocket 11 and is journaled on a bearing member 13 secured as by rivets 14 to the vertical plate 7. A usual electric cable reel 15 is suitably'supported on the rear end of a truck frame 1 and power medium is adapted to be transmitted to the motor of the miningmachine through conductor cables 16 and 17 leading respectively to the reel and the mining machine driving motor, not shown. The motor is herein preferably of the usual reversible electric type andthis'motor is adapted to drive the cutter chain sprocket 1'1, theimproved means for swingingthe bar about; its pivot, and the improved means for drivingthe truck wheels as hereinafter more fully described.

In specifically describing the improved mechanism itwill herein be observed that the rear end, of the; horizontally disposed longi-.

tndinally extendingarmature shaft 18 of the driving motor has secured thereto a spur pinion 19 (see Fig. 3) which meshes with a larger spur gear 20 rotatable on a parallel axis and disposed in the same horizontal plane the a. of the pinion 19. As shown, this gear 20 turn has suitably secured thereto a bevel pinion 21 which meshes with a larger bevel gear 22 rotatable in a vertical plane, and this gear is suitably secured by a spline 28 to a main driving shaft 24 disposed on a horizontal axis extending transversely of the machine. The shaft 24 is adapted to drive suitable gearing substantially similar to that described in my prior Patent No. 1,470,570, patented Oct. 9, 1923, and which includes a suitable friction (not shown) and a spur gear 25 suitably secured to a sleeve 26 jourualed upon a stud 27, the latter being disposed on a horizontal axis extending transversely of the machine frame and disposed parallel with and in the rear of the main driving shaft 24. The sleeve 26 has secured thereto a chain feed sprocket 28 rotatable in a vertical plane and this feed sprocket is adapted to be driven through the transmission means, clearly described in the patentmentioned above, at a fast speed in one direction or at a slow speed in the opposite direction under the control of means including suitable manually operable levers 29 and 29 in the usual manner, as is likewise described in the above mentioned patent. In accordance with this invention the chain sprocket 28 cooperates with an endless flexible feed or drive member 30 herein preferably in the form of a loose link chain. Suitable guide sheaves or sprockets 31, 32 and 33 are provided which are rotatable-oil spaced horizontal axes parallel with the axis of the chain sprocl-ict 28 and these sheaves guide the chain 30 relative to the drive sprocket 28. As illustrated, the chain 30 passes upwardly around the sprocket 28 and around the upper tinide sheave 31 and then forwardly longitnuina'ly of the machine and around a guide sheave or sprocket 34 rotatable on a horizontal traiisversely extending pin 35 carried by a radially extending arm 36, in turn carried by a member 37, the latter being rotatably mounted, as at 38, on a bearing sleeve secured as by the rivets 14 to the plate 7. The member 37 is preferably composed of two parts rigidly secured together by screws 4-0 and one of these parts is bent outwardly. as 41, at its forward end and is secured as by bolts 42 to a lateral projection formed integral with the cutter bar 9 (see Fig. 4). The chain 30 passes around the guide sprocket 84 and then extends rearwardly around a driving sprocket 44 (see Fig. 3) disposed co axially with and journaled on the main drivingshaft 24. The sprocket-44 isv adapted to be driven from the chain sprocket 28 in an improved manner to be hereinafter described.

The chain 30 passes from beneath the sprocket 44 forwardly around a guide sprocket 45, similar to the sprocket 34, rotatable on a transversely disposed horizontal pin 46 like wise carried by a radial arm formed on the two-part member 37 and this pin 46 is diametrically disposed with respect to the pin 35 and the bar pivot 12. The chain 80 then passes rearwardly beneath the axles of the truck wheels 2 and around the lower guide sheave 33 and hence upwardly around the central guide sheave 32, the chain 30 extending from the guide sheave 32 below and around the chain sprocket28. From the foregoing description it will be evident that when the drive sprocket 28 is driven in one direction the cutter bar 9 may be swung upwardly about its pivot 12 ata fast speed and that when the direction of the drive sprocket 28 is reversed the cutter bar may be swung (lOWll.- wardly at a slow or cutting speed, the swinging movement of the bar being effected by means of the endless chain 30 and suitable connections hereinafter described.

The main driving shaft 24 is provided with a reduced extension 47 projecting laterally from the machine frame 5 (see Fig. and this extension has secured thereto as by a spline 48 a clutch member 49 having suitable jaw clutch teeth 50. The chain sprocket 44 is likewise provided with suitable j aw clutch teeth 51 oppositely disposed with respect to the jaw clutch teeth 50. In thisinstance journalcd on a sleeve 52 supported on the extension 47 is a chain sprocket 53 splined, as at 54, to oppositely disposed clutch members or sleeves 55 and 56. lVIoreover, the clutch members 55 and. 56 are provided with suitable jaw clutch teeth which are adapted to selectively cooperate with the teeth 51 and formed on the sprocket 44 and the clutch member 49 respectively. It will herein be observed that a shipper member 57 cooperates with the radial flanges of the sleeves 21114, 56 and this shipper member is suitably secured as by a pin 58 to a horizontally disposed transversely extending operating shaft or rod the latter being splined, as at 60, in operative sliding relation with a combined bracket and chain guard 61, the latter being secured by screws 62 to the plate 7. As illustrated, the outer end of the non-rotatable shaft or rod 59 is provided with a. suitable grasping handle 63 which is adapted to he held in a plurality of operative posit-ions by means of a spring pressed plunger 64, the latter being adapted to cooperate with spaced apertures 65 formed in a portion of the bracket 61. A chain 66 cooperates with the sprocket 53 and a similar sprocket 67 (see Fig. 6) splined, as at 68, to a transversely extending horizontal shaft 69v journaled at one end in roller. bearings 70 suitably carlOO ried by oneof the angle members 4 and at the other end thereof in ball bearings 71 carried within a. suitable supporting bracket 72 secured, as by screws 7 3, to the side of a gear casing 74, the latter being suitably supported at the rear end oi" the truck frame 1. Secured as by a key 75 to the inner end of the shaft 69 is a bevel gear 7 6 rotatablein a vertical plane and meshing with this bevel gear is an intermediate bevel pinion or idler 77 journa led on a bearing sleeve carried by a stub shaft 78 rigidly secured, as by a bolt connection 79, to the gear easing 7 Meshing with the bevel pinion 77 is a bevel gear 80 similar to the bevel gear 76 butrotatable in an opposite direction. The bevel gear 80 is journaled on a bearing sleeve 81 supported by a sleeve-like portion 82 formed integral with a; clutch housing 88, the latter being suitably journaled on a shaft 8% disposed coaxially with the shaft '69 and journaled at its outer end in roller bearings 85 carried by one of the angle members t and journaled at its inner end in a bearing sleeve 86 suitably carried within the shaft 69. As shown, the shafts 69 and 84 areheld. against axial separation by means of a suitable interlocking connection 87 and a cooperating bolt 88 extending coaxially through the shaft 69 and having at its outer end an adjustable nut. In accordance with this invention cooperating with the inner periphery of the clutch housing83 are trictionally lined clutch shoes89 connected through toggle links 90 to an axinliy movable actuating member 91 slidably mounted on the shaft 84;. Cooperating with the member 91 is a clutch actuating member 92 with which a shipper lever 93 of suitable form cooperates. The shipper lever 93 is adapted to be operatedby means of a suitable actuating rod 9% (see Fig. 2) ope'ratively con nected to a pivoted operating lever 95. Inv a 'ain referring to Figure 6 it will be observed. that splined, as at 96, to the shaft 8 1 is a spider member 97 having suitable radially extending arms 98 which are interlocked with the clutch shoes 89 in a well known manner. It will be evident that when the operator suitably manipulates the lever 95, the member 92 and consequently themember 91 may be slid axially of the shaft 8 1, thus causing the toggie links 90 to radially expand the clutch shoes 89, thereby irictionally connecting the clutch housing 83 with the member 97 and thereby eti'ecting rotation. of the shaft 8%. It will also be evident that upon suitable slippage of the clutch slices 89 the speed of rotation of the shaft 8% may be varied will. As shown, splined as at 99 to tl'ie or. 2r end of the shaft 8 1 is a sprocket 100 which in turn drives, through chain and sprocket connections 101 and 102, the truck wheels 2. Splinedas at 103 to the sleeve like portion 82 of the clutch housing 83 is an axially slidabic clutch element 10 1 having oppositely disposed clutch teeth which are adapted to se lectively engageapertures 105,106 formed .being adapted to cooperate with en respectively in the reverse bevels 76 and 89. Cooperating with the'clutch member 10 1- is a shipper yoke 107 keyed to a vertically disposed shaft 108 suitably journaled u thin the gear housing 7 a. Suitably secured to the upper end of the shaft 108 is an operating lever 109' and this lever is adapted to be held in its different adjusted positions by means of a spring pressed plunger 10, the i spaced apertures formed within an neut 111 suitably secured to the truck frame 1. T he clutch housing 83 is externally grooved, as at 112, and cooperating with the groove is a belt connection 1.13 which is connected to a pulley 114 secured to the cable reel 15 and this belt constitutes a driving connection for the latter during truck movement. From the foregoing description it will be evident that by throwing the clutch shipper 57 and consequently the jaw clutch teeth formed on the sleeve member 55 into engagement with the jaw clutch teeth 51 formed on the chain sprocket 14, the sprocket and hence the reverse bevels 76 and '80 may be driven, by means of the chain 30 and the chain sprocket 28, at a slow speed in one direction and at a fast speedin the opposite direction. Further, by throwing the shipper 57 in opposite direction and consequently the clutch teeth formed on the sleeve member 56 into engagement with the jaw clutch teeth 50 formed on the clutch member 19, the sprocket 53 and consequently the reverse bevels 76 and 80 may be d -iven directly from the shaft 2 1 at a still faster speed. It will also be evident that when the clutch member 19% is suitably actuated and when the clutch including the housing 83 is applied the truck wheels 2 may be driven in opposite directions at a slow speed, at a fast speed, or at a higher or transport speed.

In specifically describing the improved bar locking means, it will be noted that formed on the pin 35 and carried by the radial arm 36 is a threaded extension 115 with which a threaded nut 116 cooperates. The nut 116 engages at its inner end a disk 117 having serrations formed on its inner face and this disk is adapted to engage a link 118 pivotally connected, as at 119, to a siutiporting bracket 120" suitably secured to the plate 7 of the machine frame.- As shown. the link 118 is centrally slotted, as-at 121, throughout a substantial portion'of itslength and the extension 115 of the, pin 35 extends through this slot as clearly shown in F f1. lln'iproved means are provided for rotating the nut 116 and such means comprises a ratchet member 122 splined, as at 123, to the nut 116. Cooperating with the ratchct'member 122 is a reversible pawl 124; suitably keyed to a shaft 125, the outer end of which has suitably secured thereto an operating lever 126. The shaft 125' is rota-tably mounted on an elonill gated lever 127. It will therefore be evident that when the lever is swung back and forth the ill-cs, iet member 122 and consequently the nu" 116 mav be rotated in one .1 u c 1, 1 oirection, aneieuy car i; too disk 111 to positively eugige the link 1 18 to lock the arm 36 and consequently the cut-t *1 bar 9 against t in 'lol "A" 1061*" #10 7. mo\ cmen icn an e (,1 s is sw n.1,, up wardl the position o'i the pawl 12 1 is reversed and when the le er 1 27 is again actuated, the ratchet member 124 and consequently the nut 116 rotated in an opposite a direction and the COHDLQE'iOIl between the disk 117 and he link 1118 is released, thereby permitting the cutter bar to be freely swung about its pivot.

It will herein be noted that the rear axle of the truck wheels 2 has suitably secured thereto a friction braking device generally designated. 128 which is adapted to be op erated through suitable connections 129 and 130 by means of a lever 131 pivoted in a suitable manner upon the truck frame 1'. This braking device 128 is adapted to control the movement of the machine at certain times during the cutting operation and the movement of the machine relative to the trackway of a steep gradient.

In the operation of this improved shearing machine, it will herein be noted that when the machine moving about the mine at a fast or transport speed, the sprocket 53 is thrown into driving relation with the clutch member 4-9 secureo to the extension 17 of the main driving shaft 2 1, it being understood that the clutch member 104; is connected to the bevel gear 76 and that the clutch shoes are in tigut frictional engagement with the clutch housing 83. hen the clutch member 104- shifted into engagement with the reverse bevel gear 80, it is obvious that the truck may be driven at a fast or transport waved in the opposite direction. When the machine is disposed adjacent the coal face, the driving sprocket 53 is engaged with the chain sprocl l. min the clutch member 10 1 is tl rown into engagement with the bevel gear 76, the clutch shoes 89 tightly applied, and the braking device 128 is set, thereby preventing rotation of the truck wheels and consequently the sprocket 14:. The drive sprocket 28 is rotated at a fast speed in a countercloelnvise direction under the control of the lever 2?), drawing in the chain 30 between the sprocket 28 and the sprocket 44, which is prevented from rotating, and the "utter bar is swung upwardly, by the pull oi the cl-ain 30 on the upper radial arm 36 carried i the cutter bar, from the full line po tion shown in Fig. 1 to the full. line position as at A, as shown in 7, the serrated locking disk 117 being released at this time. After the cutter bar assumes the position indicated by A in Fig. 7, the pcrater moves the lever 127 back and forth,

consequently eflecting rotation of the nut 116 and rigidly locking the serrated disk 11.7 to the slotted link 118, thereby holding the cutter bar rigidly in position. The sprocket 28 is then driven at a slow speed in the reverse direction, causing the chain 30 to drive the sprocket 44;, it being understood that the clutch 1 has engaged the bevel gear 80, and the truck wheels 2 are moved along the trackway to effect sumping at a slow or cutting speed until the bar assumes a position indicated by Bin Fig. 7, it being also understood that the braking device 128 is released at this time. The cutter bar locking disk 117 is then released and the braking device is then again set, preventing rotation of the sprocketand upon continued rotation of the sprocket 28 the bar is swung downwardly by the pull of the chain on the lower radial. arm carried by the cutter bar from the position B in Fig. 7 to the lower dotted line position (l at a slow or cutting speed. The cutter bar is then again locked in position by the locking 7 The braking device 128 1. released and the clutch member 10-4; is shifted into engagement with the bevel gear 76 and upon continued rotation of the sprocket 28 the truck wheels are driven in a reverse direction at a slow or cutting speed and the cutter be r *ithdrawn from the face of the coal to th position indicated at D in Fig. 7. The locking disk 117 is then released and the tracking device 128 is then again set and upon reverse-rotation of the sprocket 28 the cutter bar is swung rapidly upwardly to the full line position shown. in Fig. 1 and is locked in this position. The braking device 128 is then released, the sprocket 53 connected to the clutch member 49, the clutch 10-1 shifted into engagement with bevel gear 80, and the truck is driven rearwardly from the face at a fasttransport speed relative to the trackway, the cable reel 15 winding in the cable 16 at this time in the usual manner. These and other operations of this improved mining machine will be clearly apparent to those skilled in the artv lVhile I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form has been shown for purposes of illustration and that the invention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

Vl t l claii new and desire t l l. i i

tluire ui including a relaspeed reduction and, driven by 'ing, a common transmission element for lriviugthe wheels of said truck at a cutting speed in opposite directions without reversal of-said'motor and for moving said cutter rbar relativeitorsaid truckat a cutting speed, and separate members engaging said transmission element, one of said members constituting a driving member for the tru avheels while the other member constitutes a mcmheriior uno-ving said cutter bar.

2. In ;a mining apparatus, a wheeled truck, cutting (mechanism thereon including a relatively movable cutter bar and a motor, and means driveniby said motor including a flexible transmission element for driving the wheels of said-truck ata cutting speed in opposite directions without reversal of said met or and tor moving.- said' cutter bar relative to 'said truclnat acutting-speed, said flexible element being operatively connected to said truck wheels and to saidcutter bar atzs'paced points along its length.

3. Inamining apparatus, a wheeled truck, cutting mechanism mounted thereon including a pivoted cutter bar movable relative to said truck in ai -vertical plane and a motor, means drive-n by said motor including gearing providing a substantial speed reduction and, driven by-said gearing,-acommontransmission element [for swinging .saidcutter bar about its pivot and lordriving the wheels-of said truck at a cutting speed in opposite directions without reversalofsaid motor,-and

separate membersengagingsaidtransmission element, one of-said members constituting a driving imember for the truck wheels avhile the other rmember constitutes a :member for swinging said cutterlbar. 1

4. In aminingapparatus, a wheeled truck, cutting mechanism mountedwthereon including a pivoted cutter bar movable relative to said truckin a vertical plane and a motor, and means driven by said motor including -a 'iexible transmission element forswi-nging said cutter bar ahoutitmpizvot and for-driving the wheels ofsaidtruclr atia cuttingspeed in opposite directions without reversal of said motor, said flexible element being' operatively connected to =the-trucl wheels and to said pivoted cutter bar atspaced points along its length.

' 5. Ina miningra pparatus,a-wheeledtruol cutting mechanism mounted thereon inciuding a pivoted cutter bar movable relative to said truck in in vertical plane and a motor, andaneans driven by said :motor tor-driving the wheels of said truck at a cutting speed in opposite directions without :reversal of said =mot-o1wand for swinging said bar about its pivot at: a cuttingsp eed including a plurality of selectively operativetruck drivingand bar --swinging imembers andafiemble .drivm g ele- .ment cooperating directly with said members.

6. Ina mining .;apparatus, a wheeledtruck, cutting mechanism mounted thereon including a pivoted 'cutterzloar and a motor, :and

means driven by said motor for swinging said 7 bar about its pivot and for driving the wheels ments movable therealong for cutting a kerf' to admit said. bar, a reversible motor, means driven by said motor and including gearing providing a substantial speed reduction, for moving said cutterbar relative to said truck at a cutting speed, and means associated with said bar moving means and driven through said gearing for e'li ecting rectilinear movementsof said cutting mechanism at acutting speed in opposite directions without reversal of said motor for effecting sumping and withdrawal movements of said cutter bar during cutting. I

8. In a mining apparatus, awheeled truck, cutting mechanism mounted thereon including a cutter bar movable relative to said truck in a vertical planeand having cutting elements movable therealong for cutting a kert to admit said bar, a reversible motor, means driven by said motor and including gearing providing a substantialspeed reduction, for moving said bar relative to said truck at a cutting speed, andmeans associated with said bar moving means and driven through said gearing for driving the wheels of said truck atacutting speed in opposite directions without reversal of said motor for eli'ecting sumping and withdrawal movements of said cutter bar during cutting.

,9. In a mining apparatus, cutting mechanism movable in a vertical plane, a motor, and meansdriven by said motorfor moving said cutting mechanism at a cutting speed truck in a Vertical plane,-a motor, and means ClIlVGIl by said motor mcludmg a flexible transmission element for driving the wheels of said truck at a cutting speed in opposite directions without reversal of said motor and for moving said cutter bar relative to said truck at a .cuttin'gspeed, and separate members engaging said transmission-element, one of said members constituting a driving memliG ber for the truck wheels while the other member constitutes a member for moving said cutter bar.

11. In a mining apparatus, a Wheeled truck, cutting mechanism mounted on said truck including a cutter bar movable relative to said truck in a vertical plane, a motor, and means driven by said motor including a flexible transmission element for driving the wheels of said truck to propel the apparatus bodily at a cutting speed in opposite directions without reversal of said motor and for moving said cutter bar relative to said truck at a slow cutting speed or at a fast speed in opposite directions, and separate members engaging s: id transn'iission element, one of said members constituting a driving member for the truck wheels while the other member constitutes a member for moving said cutter bar.

12. In mining apparatus, a truck, cutting mechanism mounted "hereon including a cutter bar movable rela-ive to said trucl: in a vertical plane, a motor, and means driven by said motor to move said cutter bar relative to said. truck at a cutting speed and to propel said truck bodily at a cutting speed. in opposite directions without reversal of said motor includinga cooperating endless flexible transmission member, said flexible member being operatively connected to said truck propelli .g 1 cans and said cutter bar at spaced. points along its length.

13. In a mining apparatus, a truck, cutting mechanism mounted thereon including a cutter bar movable relative to said truck in a vertical plane, a reversible motor, means driven by said motor for moving said cutter bar relative to said truck at cutting speed and for propelling the apparatus bodily at a cutting speed in opposite directions without reversal of said motor including a driving element carried by said cuttingmechanism and rotatable in a vertical plane, and a cooperating endless flexible member. said flexible member constituting the final transmission member for ettec ing movement of said cutter bar.

14. In a mining apparatus, a truck, cutting mechanism mounted thereon including a cutter bar movable relative to said truck in vertical plane, a motor, and means driven by said motor for moving said cutter bar relative to said truck at a cutting speed and for propelling said truck bodily at a cutting speed in opposite directions without reversal of said motor including a plurality of selectively operative bar moving and truck propelling members, and a flexible member cooperating directly with said members.

1.5. In a mining apparatus, a truck, cutting mechanism mounted thereon including a cut ter bar movable relative to said truck in a vertical plane, a motor, and means driven by said motor for moving said cutter bar relative to sai: truck at a cutting speed or at a fast speed nvsaess and for propelling said truck bodily at a cutting speed in opposite directions without reversal of said motor including a plurality of selectively operative bar moving and truck propelling membe s, and a flexible member cooperating directly with said members.

16. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a driving motor, a horizontally disposed driving shaft having an element there-- on adapted to be driven thereby, a feed open ating me iber coaxial with said element, and means for driving said truck at different speeds including cutting speed in opposite directions without reversal of said motor including a member conncctiblc selectively directly to said feed operating member and sa d element.

17. In a mining apparatus, a v-rheelrnl truck, cutting mechanism mounted thereon including a driving motor, a horizontally disposed driving shaft having an element thereon adapted to be driven thereby, a feed operating member coaxial with said element, and means for driving said truck at a cutting speed in opposite directions without reversal of said motor or at a fast speed including a member connectible selectively dire :tly to said teed operating member and said elemen t.

18. In a mining apparatus, Wheeled truck, cutting mechanism thereon including a driving motor, a horizontally disposed driving shaft having an element thereon adapted to be driven thereby, a feed operating member, and means for driving said truck at different speeds including a cutting speed in opposite directions without reversal of said motor, said driving means including a clutch for selectively connecting said :r'eed operating member and said element in driving relation with the truck wheels, and a flexible element cooperating with and driving said teed operating member. 7

19. In. a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a cutter bar movable relative to said truck in a vertical plane, a reversible motor, and means driven by said motor for driving said truck at a plurality of speeds and in opposite directions at any speed ivithout reversal of said motor including a flexible element, said element being associated with said cutter bar and constituting a final transmission element to effect movement thereof.

20. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a cutter bar movable relative to said truck in a vertical plane, a motor, means driven by said motor for driving said truck at a cutting speed in opposite directions without reversal of said motor or at a higher speed including a flexible element, said flexible element being associated with said cutmamas wheels of said truck at a cutting speed in opposite directions wlthout reversal of sand motor and for moving said bar relative to said truck at a cutting speed including a flexible transmission. element operatively connected to said truck wheelsand'to said cutter bar at different pointsalong its length.

22. In a mining apparatus, a wheeled,

truck, cutting mechanism thereon including a relatively movable cutter bar, a motor, and means driven by said motor for driving the wheels of said truck at a cutting speed in opposite directions without reversal of said motor and for moving'said bar relative to said truck at a cuttingspeed or at a fast speed including a flexible transmission element operatively connected to said truck wheels and to said cutter bar at different points along its length. i

23. In a mining apparatus, a wheeled truck cutting mechanism mounted thereon including a. driving motor and a cutter bar swingable relative to said truck in a vertical plane to cut a kerf to admit said bar, and speed reducing transmission means driven by said motor constantly cooperating with said cutter bar'and connectible at will to drive the truck wheels for swinging said cutter bar in either direction and for effecting rectilinear movements of said cutter bar at a cutting speed in opposite directions for effecting sumping, swinging, and Withdrawal movements of said cutter bar all while said motor rotates continuously in the same'direction.

24. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a driving motor and a cutter bar swingable relative to said truck in a vertical plane to cut a kerf to admit said bar, and speed reducing transmission means driven by said motor constantly cooperating with said cutter bar and connectible at will to drive the truck wheels for swinging said cutter bar in either direction and for propelling said truck in opposite directions at a cutting speed for effecting sumping, swinging, and withdrawal movements of said cutter bar all while said motor rotates continuously in the same direction. I

25. In a mining apparatus, a wheeled truck, cutting mechanism 'mounted thereon including a driving motor anda cutter bar swin'gable relative .to said truckin a vertical plane to cut a kerf to admit said bar, and

speed reducing transmission. meansdriven by said motor constantly cooperating with said cutter bar and connectible at will to drivethe truck wheels for swinging said cutter bar in either direction and for propelling said truck in opposite directions at a cutting speed for effecting sumping, swinging andwithdrawal movements of said cutter bar or for propelling the truck at a higher transport speed,

all while said motor rotates continuously in the same direction.

26. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a driving motor and a cutter bar swlngablerelatlve to said truck in a vertical plane, and speed reducing transmission means drlvenby said motor constantly cooperating. with said bar and connectlble at will to drive the truck wheels for swinging said bar in either direction and for propelling said truck in opposite directions at a cutting speed without reversing said motor, said transmission means including a plurality of independently operable friction controlling devices.

27. In. a .inining apparatus, a wheeled truck, cutting mechanism mounted there-V in including a driving motor and a cutter bar swingable relativeto said truck in a vertical plane, and speed reducing transmission means driven by said motor constantly cooperating with said bar and connectible at willto drive the truck wheels for swinging said barin either direction and for propelling said'truck. in opposite directions at either acutting speed or at a fast speed withoutreversing said motor, said transmission means including a plurality of independently operable friction controlling devices.

' 28. Ina mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a driving motor and'a cutter bar swingable relative to said truck in a verticalplane, and speed reducing transmission means driven bysaid motor constantly cooperating with said bar and connectible at will to drive at a higher transport speed, said transmission means including a plurality of independently operable friction controlling devices.

29. In a mining apparatus, a wheeled truck, a mining machine of. the same general vtype as those normally slidable ontheir bot toms over the mine bottomrestingedgewise oil-said truck and secured thereto and having a cutter bar movable in a vertical plane, motor, and means driven by said motor and constantly cooperating with said cutter bar for moving the same at a cutting speed and for propelling the-apparatus bodily in opposite directions-at a cutting speed without reversal of'sai-d motor.

"30.'In :a mining apparatus, a wheeled truck, a mining machine of the :same general Ejatype as those normally slidable on their bottoms over the mine bottom resting on its edge on said truck and having a pivoted cutter bar movable in a vertical plane, a motor, and means driven by said motor and constantly cooperating with said cutter bar for swing ing the same about its pivot and for propelling the apparatus bodily in opposite directions at a cutting speed without reversal of said motor.

31. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a relatively movable cutter bar, a motor, and means driven by said motor i'or moving said cutter bar relative to sait truck or for driving the wl eels of said truck at a cutting speec in opposite directions without revcr ll of said motor including reduction gearing and a transmission element driven through raid reduction gearing at a relatively slow speed and cooperating vith said bar and truck wheels, separate members cooperating with said transn'iission element, one of said members constituting a driving 3 member for the truck wheels while the othe i in opposite directions without reversal of said motor including an endless flexible transmission element adapted to move said bar and drive the truck wheels, said flexible element being operativelv connected to said truck wheels and said cutter bar at different points along its length, and a reversing mechanism for said track wheels.

3;. In mining apparatus, a wheeled truck, cutting mechanism mounted thereon including pivoted cutter bar swingable in a vertical plane, a. motor, and means driven by said motor for swinging said cutter bar about its pivot in opposite directions and for e'llecting opposite rectilinear movements of said cutter bar at a cutting speed without reversal of sale motor including an endless flexible transmission element constituting a final transmission element for exerting a direct moving force to said bar and a cooperating reversing mechanism.

Zll. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a pivoted cutter bar swingable in a vertical plane, a motor, and means driven by said motor for swinging said cutter bar about its pivot and for driving said truck wheels at a cutting speed in opposite directions without reversal of said motor including a common flexible transmission element operatively connected to said truck wheels and said bar at dili'erent points along its len 'th, and a cooperating reverslng mechanism.

In a mining apparatus, a wheeled truck, cuttin mechanism mounted thereon including a med operating member and a pivoted cutter bar swingable in a vertical plane, a motor, and means driven by said motor for swinging said cutter bar about its pivot and for driving the wheels of said truck at a cutting speed in opposite directions witlmut reversal of said motor including an endless flexible transmission elen'ienl; con'imon to the bar swing and truck wheel drive and cooperating directly with said C((l operating member, said flexible element being opei'atimly connected to the truck wheels, and a -oopcratiug reversing mechamsm.

on. in a mining apparatus. a w

trucln cutting mechanism mouncu including a feed operating member an! oted cutter bar swii g l -tl plane, r and means driven by said motor for lg said cutter bar about its pivot in dirt ions and for driving truck in opposite directioi at a cul- "peed without reversal of said mote-r l1 eluding an endless flexible transni' n elcinent conunon to the bar swing and lllltfh' wheel drive and cooperating directly with said feed operating member, said flexible element being operatively connector to the truck wheels, and a cooperating rmerpinn mechanism. i 7/ 3'7. in a mining apparatus, a wheeled truck, cutting mechanisn'r mounted thereon including a pivoted cutter bar swingable in a vertical plane, a motor, and means driven by said motor for swinging said cutter bar about its pivot in opposite directions at a plurality of speeds and for eliecting rectilinear movements oil said cutter bar at a cutting speed in opposite directions without reversal of said motor, said bar swinging means including meai s for preventing rotation of said trot-l wheels for effecting bar swim);

38. In a mining apparatus, a wheeled truck, cutting mechanism mounted the eon including a pivoted cutter bar swinn'able u: a vertical plane, a motor, and means driven by said motor for swinging said cutter bar about its pivot in opposite directions at a plurality of speeds and for eliecting rectilinear move ments cit said cutter bar at a cutting speed i opposite directions without reversal of said motor, saic bar swinging means in-eludi friction braking device tor preventing relation of said truck wheels for ellecting bar swing. V

In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a pivoted cutter bar swingable in a vertical plane, a motor, and means driven by said motor for swinging said cutter bar about its pivot in opposite directionsand for pro-- pelling the apparatus bodily in opposite directions at a cutting speed without reversal of said motor including a plurality of driving members, a common element constantly coopera with both, of said members, and means Ior preventing rotation of one of said members thereby to effect one of said operations.

40. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a pivoted cutter bar swingable in a vertical plane, a motor, and means driven by said motor for swinging said cutter bar about its pivot and operative to drive the wheels of said truck in opposite directions at a cutting speed without reversal of saidmotor, said driving means including a friction braking device for preventing rotation of said truck wheels for effecting bar swin 41'. In a mining apparatus, a truck movable over a trackway, a modified self-propelled mining machine supported edgewise thereon and secured thereto with its surface which corresponds to the surface normally constituting the supporting bottom of such machines extending vertically, said machine including a forwardly extending cutter bar, a motor, means driven by said motor for driving said truck at a cutting speed in opposite directions without reversing said motor, means forming a pivot for said bar supported by said truck and located above: the latter, and means for swinging said cutter bar about its pivot to insert a vertical kerf' in an upstanding face which is perpendicular to the line of the trackway, said latter means being associated with said truck driving means.

42. In a mining apparatus, a truck mov able over a trackway, a modified self-propelled mining machine disposed edgewise thereon and secured thereto with its surface which corresponds to the surface normally constituting the supporting bottom of such machines extending vertically, said'machine' including a forwardly extending cutter bar supported by said truck and located above the latter, a motor, a self-contained means driven by said motor and constantly cooperating with said bar for swinging the same in opposite directions to insert a vertical lrerf in an upstanding face which is perpendicular to the line of said trackway, said latter means being adapted to effect truck movement in opposite directions at a cutting speed without reversal of said motor.

43. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a cutter bar swingable in a vertical plane, a motor, and means driven by said motor including speed reducing gearing and a. common driving element driven by said gearing and associated with both said truck wheels and said cutting mechanism for driving-the former in opposite directions at a cutting speed or at a higher speed and for swinging said cutter bar during the cutting operation all while said motor rotates continuously in the same direction.

44. In a mining apparatus, a wheeled truck, cutting mechanism mounted thereon including a cutter bar swingable in a vertical plane, a motor, reduction gearing, a driving member driven by said motor through said reduction gearing and rotatable at a predetermined slow speed, transmission means between said member and said cutter bar for swinging the latter at a slow or cutting speed, and means driven by said transmission means to drive the wheels of said truck at a cutting speed in opposite directions without reversing said motor.

45. In a mining apparatus, a machine body, a movable cutter bar mounted thereon, means for moving said bar relative to said body, and means including a member pivotally connected to said body, and a cooperating locking" member carried by and movable with said bar for holding the latter in its adjusted positions. 7

46. In a mining machine, a machine body, a movable cutter bar mounted thereon, means for moving'said bar relative to said body,

and means including a member pivotally connected to said body, and a cooperating manually adjustable clamping member carried by and movable with said bar for looking the latter in its adjusted positions.

47 In a mining apparatus, a machine body, a movable cutter bar mounted thereon, means for moving said cutter bar relative to said body, and means including a slotted link pivotally connected to said body, and a cooperating manually adjustable clamping element'carried by and movable with said bar for locking the latter in its adjusted positions.

48. In a mining apparatus, a machine body, a movable cutter bar mounted thereon, means for moving said bar relative to said body, and means including a slotted link pivotally connected to said body, and a cooperating nut carried by said bar for locking the latter in its adjusted positions, and means for rotating said nut.

49. In a mining apparatus, a machine body, a movable cutter bar mounted thereon, means for moving said bar relative to said body, and means including a slotted link pivotally connected to said body, and a cooperating nut carried by said bar for locking the latter in its adjusted positions, and a ratchet mechanism for rotating said nut.

50. In a mining apparatus, a machine body, a movable cutter bar mounted thereon, means-for moving said bar relative to said body, and means including a slotted link pivotally connected to said body, and a cooperating nut carried by said bar for looking the latter in its adjusted positions, and

a reversible ratchet mechanism for rotating said nut in opposite directions.

51. In a mining apparatus, a machine body, a movable cutter bar mounted thereon, means for moving said cutter bar relative to said body, means for locking said cutter bar in its adjusted positions including a slotted link pivotally connected to said body, a serrated disk carried by said bar, and means for forcing said disk into positive engagement with said link including a rotatable nut, and means for effecting rotation of said nut.

52. In a mining apparatus, a truck having running gear, cutting mechanism thereon including the cutter bar movable relative thereto and a driving motor therefor, and means driven by said motor for driving the running gear of said truck for effecting bodily movement of said cutter bar at acutting speed in opposite directions without reversing said motor and for moving said cutter bar relative to said truck at a cutting speed including a flexible transmission element, and means for effecting circulation thereof as a whole or movement of portions thereof relative to another fixed portion including means for holding a portion thereof stationary.

53. In a mining apparatus, a truck having runnning gear, cutting mechanism thereon including a pivoted cutter bar and a driving motor therefor, and means driven by said motor for driving the running gear of said truck to effect bodily movement of said cutter bar at a cutting speed in opposite directions without reversing said motor and for swinging said cutter bar at a cutting speed including a flexible transmission element, and means for effecting circulation of said element as a whole or movement of portions thereof relative to a fixed port-ion including means for holding a portion thereof stationary.

54-. In a mining apparatus, a truck having running gear, cutting mechanism thereon including a driving motor and a cutter bar pivoted for movement in a vertical plane, means driven by said motor for driving the running gear of said truck to effect bodily movement of said cutter bar at a cutting speed in opposite directions without reversing said motor and for swinging said cutter bar at a cutting speed including a flexible transmission element, and means for effecting circulation of said element as a whole or movement of portions thereof relative to a fixed portion including means for holding a portion thereof stationary.

55. In a mining apparatus, a truck having running gear, cutting mechanism movably mounted on said truck, a motor, and means driven by said motor for driving the running gear of said truck to effect bodily movement of said cutting mechanism at a cutting speed in opposite directions without reversing said motor and for moving said cutting mechanism relative to said truck at a cutting speed including a flexible transmission element, and means for effecting circulation thereof as a whole or movement of portions thereof relative to another fixed portion including means for holding a portion thereof stationary.

56. In a mining machine, a machine frame, a cutter bar pivotally mounted thereon, a motor carried by said frame, and means driven by said motor for swinging said cutter bar and for propelling the apparatus bodily at the same speed in apposite directions without reversing said motor, said bar swinging means including an endless flexible, connection, means for holding a portion thereof stationary, and means for moving another portion thereof.

F7. In a mining machine, a machine frame, a cutter bar pivotally mounted thereon, a motor, and means driven by said motor for swinging said cutter bar and for propelling the apparatus bodily at the same speed in opposite directions without reversing said motor, said bar swinging means including an endless flexible connection reeved in a polygon, and means for changing the shape of said polygon to effect bar swing.

58. In a mining machine, a machine frame, a pivoted cutter bar thereon, a motor, and means driven by said motor for effecting bar swing in opposite directions while its pivot remains stationary and for propelling the machine bodily at the same speed in opposite directions without reversing said motor, said bar swinging means including a flexible element cooperating with said bar and with a stationary point, and means cooperating with said element to change the distance between the point of cooperation with the bar and the fixed point.

59. In a mining apparatus, a machine frame, a pivoted cutter bar thereon, a motor, and means driven by said motor for swinging said cutter bar and for propelling the apparatus bodily at the same speed in opposite directions without reversing said motor, said bar swinging means including an endless flexible transmission element cooperatively connected with said bar at spaced points, means for imparting a moving force to the portion of said element at one side of said points, and means for holding said element stationary cooperating with the portion thereof at the other side of said points.

60. In a mining apparatus, a wheeled truck, cutting mechanism thereon including a driving shaft projecting laterally therefrom, a feed operating member, and means for selectively driving said truck at different speeds and at the same speed in opposite directions from said driving shaft and from said feed operating member and While said shaft rotates continuously in the same direction.

61. In a mining machine, a wheeled truck nections driven by said motor and engageable with said bar for moving the same about its pivot, and truck wheel driving mechanism cooperating with said bar swinging means for moving said pivot relative to said trackway at the same speed in opposite directions without reversing said motor.

62. In a mining machine, atruck movable over a trackway, a modified self-propelled mining machine disposed edgewise thereon and secured thereto with its surface which corresponds to the surface normally constituting the supporting bottom of such machines extending vertically, said machine including a forwardly extending cutter'bar supported by said truck and located above the latter, a motor, and a self-contained means driven by said motor and constantly cooperating with said bar for swinging said bar about its pivot and for propelling the machine bodily in opposite directions without reversing said motor and at the same speed to insert a vertical kerf in an upstanding face which is perpendicular to the line of the trackway.

63. In a mining machine, a motor, a pivoted cutter bar, and means driven by said motor for positively swinging said bar about its pivot and for propelling the machine bodily at the same speed in either direction without reversal of said motor including a plurality of driving members and a flexible transmission element associated therewith, and means for holding one of said members stationary while the other rotates to act on said flexible element. v

In testimony whereof I aifix my signature.

MORRIS P. HOLMES.

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