US1684375A - Mining machine - Google Patents

Description

Seht. 11, 1928. 1,684,375

c. F. osGooD mmm mcnmn Original Filled March 13, 1924 5 Sheets-Sheet,l 'I

Sem. il,

v F. QSC-390D MINING MACHINE criginal Filed Marcnl, 1924 5 Sheets-Sheet Sept. l, 92& 1,684,375 C. F. @SGOD MINING MACHINE Onglnal Fxled March l5s 1924 5 Sheets-Sheet Sept. 1L 1928. 1.684.375

c. F. OSGOOD MINING AHINE originai Filed waffen 13g 1924 5 sheets-snaai '4 1,684,375 C. F. QSGOOD MINING MACHINE 5 Sheets-Sheet 5 original Filed Maron 13. 1924 il@ im `f 1 Il 257 1 veno/x 13? 1% Z3 67ml' .s Fsgoodf.

39AM A mum.

Patented.Sept. 1l, 1928.

UNITED STATES PATENT OFFICE.

CHARLES F. OSGOOD, OF CLAREMONT, NEW HAMPSHIRE, ASSIGNOR T SULLIVAN i MACHINERY COMPANY, A. CORPORATION 0F MASSACHUSETTS.

MINING MACHINE.

Application led March 13, 1924, Serial No 699.119. Renewed .Tune 29, 1927.

My invention relates to mining machines.

An object of my invention is to provide an improved mining machine. Another object of my invention is to provide an improved mining machine of the so-called universal type. A further object of my invention is to provide an improved mining machine having improved and simplified adjusting means for the cutting mechanism permitting a very wide range of cutting in a relatively narrow machine. A still further object of my invention is to provide an improved mining machine having improved supporting and adjusting mechanism for the cutting mechanism thereof whereby the machine may cut upon a trackway with the cutting mechanism upon the bottom and outside the trackway. Other objects and advantages of my invention will hereinafter 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. l is a side elevation of a mining machine in which the illustrative embodiment of my invention is incorporated, with the cutter bar broken away.

Fig. 2 is a. plan View of such a mechanism with the cutter bar broken away.

Fig. 3 is a view partially in plan and partially in section showing portions of the adjusting mechanism for the cutter bar and its supporting mechanism.

Fig. 4 is aview on the section line 4 4 of Fig. 3, being a vertical sectional view through portions of the cutting mechanism actuating, supporting and adjusting mechanism.

Fig. 5 is a horizontal section showing portions of the truck driving mechanism, the ba-r adjusting mechanism, transmission mechanism, etc.

Fig. 6 is a section approximately on a plane corresponding to the section line 6-6 of Fig. 5.

Fig. 7 is a detail sectional View taken on a plane corresponding to a line 7-7 of Fig. 5.

Fig. 8 is a detail sectional view illustrating a portion of the truck wheel driving mechanism.

My invention constitutes an improvement over the invention of one Morris P. Holmes described and claimed in his application Ser. No. 694,139, filed Feb. 20, 1924, and such parts of the mechanism as are not specifically my invention will be described in no more detail than is essential for the purpose of disclosing the mode of operation of the improved construction.

A truck 1 is provided which is movable along a trackway 2, the truck being supported on wheels 3 which are connected for rotation together by a chain 4. The Wheels are capable of being driven either at a fast or at a slow speed, these speeds corresponding respectively to the proper speeds for propulsion about a mine and for a cutting speed, and the Wheels may also be held stationary if desired. Mech- `anism for accomplishing these results is, however, not per se my invention and accordingly has not been disclosed in minute detail. The truck wheels may be driven by the chain 6 through friction controlled motor driven driving mechanism 7 from a motor 8 at a suitable speed for running around the mine, it being possible by reversing the motor to run 'in either direction, and also possible to interrupt the driving connection so that the wheels may rotate freely, and further that a drivingr sprocket 10, also driven from the motor 8 through suitable reduction and reversing gearing, not shown, is capable of driving the truck Wheels through a flexible connection 11 at a slow or cutting speed in either direction without reversing the motor, and this mechanism is of such nature that the truck wheels may be locked with the aid of the member and may also be wholly freed from any iniiuence of the driving mechanism of the member 10. In other words, either the connection 6 or the connection 11 may constitute a driving connection, while the other is freely rotatable. The motor 8 also serves to drive a pair of shafts 15, 16, the shaft 15 being driven at an equiangular rate with the armature shaft of the motor and being in fact in alinement With the latter while the shaft 16 is ca w ill? 24, suitable clutch mechanism 25 being provided for connecting the cutter chain driving sprocket to the shaft 24 or releasing it therefrom, which mechanism is operable through suitable connections 26 from the exterior of the machineas at 27. The cutter bar 20 is rotated with a plate member 28 which carries at its periphery an internal gear 29. The plate member'28 and gear 29 are held for rotation upon an axis coincident with the axis of the shaft 24 by suitable flanges 30 secured to the housing 31 which eneloses the cutter chain driving sprocket driving mechanism described. and also bar swinging mechanisms. For the purpose of swinging the bar relative to this housing. there is provided mechanism shown only in part herein, but' of the same type with other mechanism which will later be described and accordingly for the present, it will suflice to say that this mechanism includes a pinion rotatable upon a vertical axis fixed relative to the housing 31 and driven b v a worm wheel 33 which is in turn driven b v a worm 34 upon a shaft 35, through friction controlled means for effecting rotation of the. worm inopposite directions and at unequal speeds. The construction of this mechanism as stated will be made clearer in.connection with the description of other parts of similar construction hereafter, it being understood that it comprises elements corresponding to those of this other mechanism. This mechanism per se is not, however, my invention but is also disclosed in the application of the said Morris P. Holmes.

The housing 31 is provided with suitable guides 36 bolted or otherwise held thereto which slide in guideways 3T secured to a member 38 which will hereafter be more fully described. The member 24 is herein adapted to be raised or lowered and to raise or lower with it the cutter bar and its supporting means by mechanism generally similar to that disclosed in the application of said Morris l). llolmes and in the application of one Cornelius G. Boudette` Ser. No. (594,222, filed Feb. 21, 1924. It will be observed that the member 3S herein carries a casing 40 within which there is enclosed a large bevel gear 41 which is connected in non-rotative relation to a nut element 42 b v machine screws 43. Coaxial with the nut element 42 is a splined sleeve 4i which at its upper end is splined to a sleeve member 45 ha ving projecting ribs or splines 46, 4(3 thereon, the splines 4G engaging the alternate discs of a friction clutch 4T, the other discs of which clutch are held b v splines 48 against rotation relative to the housing 40. The splines 4G' constitute clutch elements and are connectible b v a sliding'clutch sleeve 50 with corresponding splines 51 upon the exterior of the member 42. Slidable through openings 52 in a rib on the frame 40 are plungers 53 which are adapted to be engaged on upward movement of the sleeve to force the clutch dises into engagement and lock the member 45 and so the member 44 against rotation, while on downward movement of the sleeve 46 the clutch is released and the part 44 may rotate relative to the casing 40. Suitable clutch operating mechanism 55 is provided for raising and lowering the clutch sleeve 46. It will be evident, when it is noted that the member 24 is formed at its upper end in the form of a screw 56 having splineways 57 therein cooperating with splines 58 upon the member 44 and having its thread engaged with the nut 42 and that it has, moreover, a collar 58 thereon engaging a suitable combined bearing and supporting means 59 for the housing 3l and the mechanism supported thereby, that the member 24 is adapted to effect elevation and lowering, or perhaps in view of the various adjustments possible it would be better to say, approach and separation between the housings 31 and 40. lt will be evident from an inspection of Fig. 4 that withthe parts in the position shown, the bar is capable of cutting on the bottom, while when it is desired to propel the machine around the mine, the mechanism may be operated to raise the bar a substantial distance above the bottom and accordingly any diliiculty with the bar striking the bottom or the track during passage through hollows in the trackway or in starting up hill will be eliminated. To recapitulate, it may be stated that when the clutch sleeve 50 is in raised position forcing the plungers 53 upward, rotation of the nut will cause raising or lowering of the housing 31 and of the bar depending upon the direction of rotation ofthe member 41, while with the sleeve in its lower position` connecting the splines 46 and 51, there will be no relative movement between the housings 31 and 40 and the cutter chain may be driven to elfect cutting.

The member 38 which was referred to previously is in the form of a supporting easing member which encloses certain gearing and which is of such dimension that it can support the guideways 37 in such relation to the trackway that the cutting mechanism may be placed u on the bottom outside the trackway. It wi l of course be understood that it may be made of greater length than that shown. This member 3S at its upper end is provided with a large internal gear (il which `serves in cooperation with an annular member (i2 to support the member 3S and the parts connected thereto in rotative relation to a forwardly projecting housing G3 which is rotatable on a horizontal longitudinally extend ing axis through mechanism which will be later described. It will be observed that the member 63 has secured thereto an internal gear 64 which is held for rotation on the front end of the frame of the mining machine by a suitable flanged sleeve member bolted by bolts 66 to said frontend. It will be noted that a pinion 67 is arranged upon the shaft 16 and cooperates with the gear 64 to effect rotation of tv he latter and with it of the housing 63. Suitable locking means of any suitable construction capable of locking the gear 64 against rotation may be provided, and such a mechanism of the type similar to that employed by the said Morris P, Holmes in his application previously referred to. is designated at 68.

From what has been said previously, it will be obvious that the head 63 and all the parts supported thereby may be rotated in either direction or held stationary. The shaft 15 projects through the gear. 64 inwardly into the casing 63 where itcarries a bevel pinion 70 which'drives a bevel gear 7l secured to a shaft 72 coaxial with the gear 61 and having its axis perpendicular to the axis of the shaft 15 extended. The shaft T2 is suitably journaled in l'ieariiigs 73', 74 and at its lower end vcarries a bevel driving pinion T5 driving a bevel gear 76 rotatable on an axis perpendicular to the axis of the shaft T2 and disposable either parallel to the shaft 15 or at various angles to a line parallel to the shaft 15 but intcrsected by the axis of the shaft upon which the gear 78 is secured. This last mentioned shaft, designated 78, suitably journaled at 79 in the member :i8 and carries a pinion 8O meshing with and adapted to drive the gear 41.

It will be observed that the sha ft T2 above the gear 71 thereon carries a pinion S1 which meshes with and is adapted to drive pinions 82, 83 which are arranged on shafts S4, S5 mbose axes lie herein in a plane to which the axis of the shaft 15 is perpendicular. These Shafts carry worms 86, 87 respectively, of which the worm S6 is of the smaller lead and these worms also differ in that the Vthread upon one is a left hand thread while upon the other it is a right hand thread. Suitably journaled as at 88 there is provided a transversely extending shaft 89 which carries loosely thereon a pair of worm wheels 90, 0l of which the worni wheel 90 cooperates with the worm 84 while the worm wheel 91 cooperates with tlie worm 85. Suitable friction clutch mechanism is provided for connecting either of these worin wlreels to the shaft S0, the clutch mechanism cooperating with the worrn wheel 90 being designated 02. while the other is designated 93, and means controllable from either end of the shaft S9 and including hand wheels 94, is arranged for effecting loading of the clutches 02 and 93. Between the worm wheels 90 and 91 there is a worin 97 which engages a worin wheel 9S fixed upon a shaft 09 and carrying a pinion 100 which engages with the internal gear 61. It will be apparent that since the shaft 90 is; journaled in fixed relation to the member 63,

rotation of the pinion 100 will effect rotation of the internal gear 61 and so will cause the member 38 to pivot about the axis of the shaft 72 and will effect swinging of thecasings 40 and 31 and otl the cutter bar across the front end of the machine. The mechanisni including the'shaft 35, worm 34, and worm wheel 33, etc. einployedfor the purpose of swinging the cutter bar is identical in principle and in general inode of operation with that last described for effecting pivotal movement of the member 3S, but the proportions are preferably so varied as to cause bar swing at an equall angular rate to that of swing of the parts supported by frame 38 when both are running at Once, the fast feeds heilig in opposite directions, and so also the slow swings. Of course leither swing is possible separately. lt will be understood that both the bar swinging mechanism and the mechanism for swinging the member 38 are self-locking. because the worin 34 and the worin 0i' must be turned positively in order to permit rotation of the worm wheels 33 and 9S.

'1`he drivin connections between the motor 8 and the shafts 15 and 16 and the chain sprocket 10 will now be briefly described. The forward end of the motor armature shaft has connected thereto (as shown in Fig. 6) a sleeve 101 which is provided with a driving pinion 10Q. This pinion meshes with and drives a larger spur gear 103 which is carried upon a horizontal longitudinally extendingshaft v104 suitably journaled within the machine frame. t its forward end the shaft 104 carries a bevel pinion 105 which meshes with and drives a pair of coaxial op- I positely facing bevel gears 106 and 10T. The latter are connectable by friction clutch mechanisms which are generally designated and 100 alternatively with a transverse horizontal shaft 110. These clutch mechanisms are operated by suitable shipper mechanism including a shipper yoker 111 and an operating handle 112 carried at the top of the frame. rl`he shaft is provided with a worm 113 (see Fig. T) which meshes with a worm wheel 114 secured to a horizontal longitudinally extending shaft 115 alined `with the shaft 16 and suitably journaled within the machine frame. This shaft 115 carries a worin 116 which meshes with and drives a worin wheel 11T. As shown the worm wheel 117 is connectible by a clutch mechanism 118 to a shaft 119 (see Fig. 5) which carries the chain sprocket 10. As shown in Fig. T the shaft 16 is connectible to theI drive shaft 11:3 by suit-able clutch mechanism 120. Referring more specifically to the truck driving mechanisin it will be observed that the rear end of the motor armature shaft has secured thereto spur pinion 121 which meshes with a spur gear 12:2 fixed to a horizontal longitudinally extending shaft 123. This shaft 123 has cured thereto a Worm 124 meshing with a Worm Wheel 125 which drives, through the friction controlled mechanism 7 mentioned above, the truck wheels. It will be observed that the shaft 15 is arranged in alincment with the motor armature sha-ft and is keyed at its rear end within a coupling member 126 which is non-rotatably secured to the sleeve 101 carrying the driving pinion 102, the parts constituting a flexible coupling. It will also be se that the shat't 16 may be rotated in one direction or the other under the control of the clutch mechanisms 108, 109 or may be entirely disconnected from the motor by means of the clutch mechanism 120. It will also be noted that. the driving sprocket 10 may be connected to or disconnected from the motor at will by means of the clutch mechanism 118. The shaft is driven at all times by the motor armature shaft. As these driving connections are clearly described in the above mentioned application Ser. No. 694,139 further description ol the same is herein submitted to be unnecessary.

From the description which has been given, the mode of operation of this mechanism will be readil apparent. The mechanism may be propelled about the mine, the truck wheels being driven by the flexible connection (l through the mechanism 7 and when the desired place for a cut to be made is reached, it will be evident that the cutter bar supporting mechanism can be adjusted to insert a kerf in a wide variety of planes. It is true that a. shearing cut cannot be inserted in the middle of an entry, but shearing cuts may be made in various vertical planes in a Ytace in advance ot' the machine und at either side of the center line ot' the track 2. One ot the most important features that may be accomplished by this mechanism is the making of `a cut on the bottom, and with the machine propelled during sumping and withdrawing Cuts along the trackway. I will there tore describe the operations requisite for the accomplishment of this result in detail and leave further operations without tull description in view of the fact that from what will be said, one skilled in the art will readily understand what operations are necessary to accomplish the insertion of any desired culs within the range ot the machine.

Assume,tl1erefore,thatthemachineisstamling upon the trarkway 2 with the cutter bar projecting beyond the front end of the trackway at its l'orwnrd end and that it is dcsired to make a cut upon the bottom, that is, it is desired to insert a kerl' whose lower bounding surface'will be an extension of the ,sui-lace along which the track is laid. Starting with the partsI in the position shown in Fig. 1. the hand wheel 95 will be operated lo engage the clutch 921. and this haring been done and the motor being in operation and driving the shaft 15 in a clockwise direction Ias possible.

in Fig. 4, the latter will cause the shaft 72 to rotate in a counterclockwise direction, as seen in Fig. 3 and will cause the gear 83 to be rotated in a clockwise direction thereby effecting rotation of the'worm 87 similarly. By reason of the nature of this Worin, the worm wheel 91 will rotate in a counterclockwise direction viewed from the right in Fig. 3 and the Worm 97 will accordingly cause the worm wheel 98 to turn in a counterclockwise direction in Fig. 3. This will result in a swinging of the member 38 from the position shown in Fig. 1 to the position shown in Figs. 3 and 4 and when it has reached the desired position the clutch 93 will be released and the member 38 will be held ifi locked position by thc cooperation of the worm 9T and worm wheel 98. It will be understood that during this operation the clutch mechanism has been left in such position that the cutter chain is not circulated. Simultaneously with the swinging of the parts about the axis of the shaft 72, there has been occurring, due to the manipulation of the controls foi-the bar swinging means, a simultaneous swinging of the bar in a clockwise direction in Fig. 3 so that the parts may assume a position such as is shown in Fig. 3 without difficulty, herein the fast bar swing being in the opposite direction to the tast swing tor the bar mounting and both being used to position the parts as rapidly lt will be understood, of course, that these parts can be arranged in opposite relation and that, moreover, friction means ot` a different type from the one shown can be employed so as to permit any eifcct otl the way ot swing about the various axes to be znbeoniplished, for example, ordinary manually loaded frictions might be substituted Ylor those illust ated. Il will be observed that the pitch or lead of the worms which constitutes portions oi the bar swinging mechanism will preferably be much steeper than that of the worms 8G, 8T, this being due to the tact th-uy there is a substantial speed rcduction between these worms and the sha l't 72. The proportions of the parts and the pitch of the worm 34 will also preferably be varied so that the rate of angular swing will be the same for the bar and tor the mechanism which swings the bar bodily. and so also the slow feed mechanisms. or perhaps preferably the bar swing will be a little slower, it being obvious that since the shaft 24 rotates in an opposite direction to the sha ft 72, the bar will swing in the opposite direction about its pivot to that in which it is swung bodily. The motor will next be temporarily reversed, all of the swing controlling clutches having been released. and the clutch 59 will be thrown up to hold the friction clutch tight and accordingly the bar will then be lowered down upon the bottom as the nut 42 will rotate in such a direction as to (ill cause the screw 56 to move downwardly. Vhen the bar is resting on the bottom the clutch 5() will be moved in the opposite direction and will connect the teeth or splines 46', 51 so that the shaft 24 may rotate without relati vc movement between the frames 40, 31. The machine will then be ready for the starting of' the sumping cut and the sprocket 10 may then be rotated, the motor having been reversed again, by the mechanism provided for this purpose in the proper direction to feed the machine along the track and the bar into the coal, the bar then being driven by the engagement of the cutter chain driving sprocket 23 and the shaft 24 by the clutch 25. lVhen the machine is moved forward so that the bar has been sumped into the the coal to nearly its full length, the machine will be stopped and held stationary, this being accomplished by the feeding mechanism of the type described. The clutch 92 and the corresponding clutch upon the frame 3l will then be actuated, clutch slippage being permitted so that the kerf started may be carried forward further in the same line. When the bar pivot and the pivot 72 lie in the same vertical plane with the longitudinalaxis of the cutter bar, the clutch controlling the slow swinging worm of the bar swinging mechanism will be thrown out and the swing will then proceed entirely about the axis of the shaft 72 until the cut has proceeded to a like position on the opposite side. The slow feed swing for the bar will again be thrown in at this point and while slipping to some extent will be operated in such manner that the point of the bar will remain substantially stationary while the bar pivot will moe further until the position the reverse of shown in Fig. 3 will be reached. The im, yeine may then backed out. With the parts Ine reverse of that shown in Fig. 3, there will be no withdrawal cut necessary. The proportions of the machine shown are, of course, not obligatory, and the frame 38 may be lengthened so as to bring the shaft 24 and the cutter bar further outside the trackway and the bar may be presented to the coal at various angles. After the desired cut has been completed the manipulation of the necessary controls will bring the parts back to the position shown in Fig. land the machine may be run off to another face. Various other possible modes of cutting will be apparent to any one skilled in this art when the structure of this machine is appreciated, but it is not believed necessary to enlarge upon this in order that my invention may befadequately understood.`

lVhile I have in this application specifically des rihed one form which my invention may assume in practice, it will he understood that this form of the same is 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.

lVhat I claim as new and desire to secur(` by Letters Patent is:

1. In a wheeled mining apparatus.v in com bination, guiding means, a support movable longitudinally thereof, self contained power operated support-wheel driving mechanism for effecting opposite rectilinear movements of said support at a cutting speed, cutting mechanism including a cutter bar, a support to which said bar is pivotally connected for swinging movement, said second mentioned support being pivotally connected to saidfirst mentioned support for movement about an axis parallel to the axis of swing of said cutter bar, a motor driven power shaft journalcd on said first mentioned support rotatable on an axis which remains at all times in a vertical plane parallel to the direction of said guiding means, and driving connections between said shaft and said cutting mechanism 2. In a mining apparatus, in combination, guiding means, a wheeled support movable longitudinally thereof, self-contained power operated support-wheel driving mechanism for effecting opposite rectilinear movements of said support at a cutting speed,A cutting mechanism including a cutter bar, a support to which said bar is pivotally connected for swinging movement, said second mentioned support being pivotally connected to said first mentioned support for movement about an axis parallel to the axis of swing of said cutter bar, a motor driven power shaft rotatable on a horizontal axis parallel at all times to said guiding means, and driving connections between said shaftl and said cutting mechanism.

3. In a mining machine, in combination, guiding means, a wheeled support movable longitudinally thereof, selfcontained power operated support-wheel driving mechanism for effecting opposite rectilinear movements of said support at a cutting speed, a horizon tal motor driven power shaft thereon fixed as to movement about a vertical axis, cutting mechanism actuated by said shaft including a cutter bar, a support to which said bar is pivotally secured. said last mentioned support being pivoted to said first mentioned support for swinging movements about an axis harallcl to tht axis of bar swing and in front of said power shaft, and powpr connections between said shaft and bar whereby the latter may be actuated.

4. In a mining mechanism, in combination, guiding means, a wheeled support movablel longitudinally thereof, self-contained power operated support-wheel driving mechanism for effecting opposite rectilinear movements of said support at a cutting speed, a horiontal motor driven power shaft mounted on said support and fixed relative thereto as to movement out of a vertical longitudinally extendlillin; r plane parallel tothe maior dimension ol Said upport. a cutter bar. a `upport to whieh Said eutter bar Vis pivotallv eonneeted. aid `second mentioned support beiner pivotallv eonneeied to said iirst mentioned upport for pivotinf;f on an axi parallel to the axi v ot swingotA Said cutter bar. driving etnineei ion between said hat`i and Said entier bar, and power eonneetiom with said \hat'i tor Swing!- in; r .\aid bar relative to aid eeeond inerttioned upport.

5. ln a miningr maehine. in eombination, IguidingV mean a wheeltd Vuipport, movable longitudinally thereof` selteontained power operated saipporiwheel dri\iuj' meehanism for etl'eetinev opposite reeiilieear movtfmenh4 of said support ai a euitinjg peed, a horizontal motor driven power halt thereon tixed as tomovemenirv about a. vertieal axis'. a -Jniter bar` a Support to whieh `laid bar i# pivotall \v secured. said `aeeond mentioned apport beinew pivoted to said tir i mentioned support for swinging movement about an axi parallel to the axi l of bar Awing and in front ot said power haft, power eonneetiona between aid shalt and bar whereby the latter ma)v be artuated, and power eonneeiiona with said Shaft for etleetiir;r .\\\iugrin;; of said bar relative to Said second mentioned support.

tl. In a miningr meehanimt, in eombination, guiding means. a wheeled support movable longitudinally thereol'. selleontained power operated :tipport-rlieel driving meeh anism for etl'eetintr opposite reetilnear movements of said support at a cuttingv epee/tl, a horizontal motor driven power ahatt mounted on Said support and lixed relative thereto as to movements out of a vertical longitudinallv extending plane parallel to the major dimension otI said support, a cutter bar, a support to whieh said Cutter' bar i5 pivotall)v eonnerted` said aeeond mentioned support heinter pi\'otall v eom'ieeted to said tirst men tioned support lor pivotal mmement on an axiv parallel to the axi ot' swing ol' said eutt-er bar` drivin;r eonnt'tetions between Said shalt and said ruiter bar. and power operated connu-tions between said `Jaai't and flaid seeond mentioned upport tor ell'eeiing bodily swing ot' aid bar and its pivot.

i'. ln a minin;r maehine, in eombinat'ion, guidingr menne. a wheeled support movable longitudinall)Y thereol. Sellroniained power operated Suppozivvtheel drivingy niet'hauism for filet-lling eppwite reetilinear movements ot' `mit aippori it a eutiur speed. e. horizontal motor driven potter fhal't ilareon fixed :la to movement about a vevtit-al :iXi-t', a entier bar` a `apport to rtnrh raid 'nar in pivoteby seeuifwl tor mviniriirer mori-ment, Said evond mem' ionetl zupport beine' planted to Sini lirst meniimed eupport lor altering movement :il/nti aa axi parallel to the axis of' bar swing. pon er eonnet an belvviin. .vaitl hatt, and liar whereby the latter may be aet uated, and power Connections between aitl Shaft and said AQeeond mentioned :upport for etleeiing bodillv Swing' ot Said Cutter bar and its pivot.

S. ln a mining inaehine, in combination, uidiner means, a Support movable longiiudinall)Y thereof, a horizontal motor driven power shatt mounted on Said aupport and tiXed relative thereto a. to movement out ot a vertical longitudinallyY extendingr plane parallel to the maior dimension ot' Said upport. a rutter bar. a rapport to whirh s-aid bar is pivotallv eonneeted. Qaiil .wt-ond mentioned Support bein;r pivotallv eonneeted to said tiret mentioned support l'or pivotal movement upon an axis parallel to the axi` ot Swing,r ot said rutier bar, drivingy ronneetions between aid hat`t and aid entier bar. power eonneetion; with a i'd halt for eil'eeiing! swing otI Said bar relative to Said Vaeeond mentioned Qupport. and power eenneetions, with said V hat`t loi @v-inginjg Said seeond mentioned support and a id ruiter liar relative to said first mentioned upport El. ln a miningr maehine, in tfombination, guiding ine-ane, a Support movable longitu dinallv thereot',-a horizontal motor driven power elialt thereon lixed aa to movement about a vertical axia, a Cutter liar, a support to whieh Vaaitl bar is pivotall)Y setfured. Said serond mentioned Support bein;t pivotallv eonneeted to said first mentioned support tot. Swingin;r movement about an axis parallel to the axn4 ol' bar swing` power eonneetion;` between aid Shalt and bar wherein' the latter inav be aeiuated. power etnniet-tiomy with aitl elial't lfor etl'eetingY swing ol said bar, and power eonneetions l'or eil'eetfingf swing ot said second mentioned Supporty and with it said bar relatve to said ir t mentioned support.

lt). ln a mining meehantn, in eombinatiert` guido u tzieane. a Support movable lone'itndinallv thereof, a horizontal power hatt rotatable on aid euppoi'tr but lixed a# to movement about a vertieal axis paving throtw'h said Support, a LQupport rotatable on an axis eotntanil)v parallel to a line parallel to the axle of -aid power eliaft, a Support rotatable` on Said seeond mentioned support upon a pivot perpendicular to the pivot, ot said 5er ond mentioned support. and a euiter bar piv otall)Y eonnet'ied to said third mentioned trupport t'or pivotal movement about an axi paialltl l to the pivot oll aid third mentioned support.

ll. ln a matin;r niet'lianisn.. in t'ombina tion. guiding meam. a wheeled -upport movaltle ltnvgliiuiiuallv tht-rent'. :ell-coi tai :ed power opt td .-:tuppfutwheel drivingl i eh :ritieni tot' t-ltrting oppo ite rettilinei r move menu ol' aid tippt-rt al a vatting' rpeed. a litfrl'fiontal long 'itutlinalljv' ext-euditn;l poner `-bait on `.iid \:ippoit. a euttt-r bai' awttzatrrl b v aid t-balt. and una' -tor uit p l`l entre; bar omitting 1t tl-po ff, a

isn

bottom outside of said guiding means including a support pivoted on a vertical axis in front of said power shaft.

12. In a mining machine, a truck adapted to run upon a track and having supporting wheels, a member rotatable upon a vertical axis disposed in front of said truck wheels, cutting mechanism supported b Said member and including a pivoted cutter bar swingable about an axis parallel to said vertical axis and provided with cutting elements moving in an orbit within which the pivot of the bar is disposed, and power operated means whereby said bar may be disposed in a transverse plane beneath the top of the track when it lies wholly outside one side of the track.

13. In a mining machine, a truck adapted to run upon a track and having supporting wheels, a meml-,er rotatable upon a vertical axis disposed in front of said truck Wheels, cutting mechanism supported bv said member and including a pivoted cutter bar swingable about an axis parallel to said vertical ax's and provided with cutting elements moving in. an orbit within which the pivot of the bar is disposed, power operated means whereby the bar may be disposed in a transverse plane beneath the top of the track when it is wholly outside one side of the track, and power operated means whereby the bar may be swung about its pivot.

14. In aimining machine, a truck adapted to run upon a track and having supporting wheels, a member rotatable upon a vertical axis disposed in front of said truck wheels. cutting mechanism supported by said member and including a pivoted cutter bar swingable about an axis parallel to said vertical axis and provided with cutting elements moving in an orbit within which the pivot of the bar is disposed, power operated means whereby the bar may be disposed in a transverse. plane beneath the top of the track when it is wholly outside one side of the track, power operated means whereby the bar may be swung about its pivot, and power operated means for moving said bar when so disposed to bring its pivot to the opposite side of the track` 15. In a mining machine, a truck adapted to run upon a track and having supporting wheels, a member rotatable upon a vertical axis disposed in front of said truck wheels, cutting mechanism supported by said member and including a pivoted cutter bar swingable about an axis parallel to said vertical axis and provided with cutting elements i'iaoving in an orbit within which the pivot of the bar is disposed, power operated means where- 1 by the'bar may be disposed in a transverse plane beneath the ton of the track when it is wholly outside one side of the track, power operated means whereby the bar may be swung about its pivot, power operated means for moving said bar when so disposed to bring its pivot to the opposite side of the track, and power operated means for moving said truck in opposite directions along said track.

16. In a mining machine, a truck adapted to run upon a track, a power operated horil zontal longitudinally extending shaft on said truck, a cutter bar, and means lfor supporting the same during horizontal cutting including parts rotatable about a horizontal axis parallel to a line parallel to the axis of said power shaft and including a plurality of pivots disposable in the vertical plane to which said track is parallel and intermediate the opposite sides of said track, one of said pivots being in such position of the parts-further for. ward than the other and both perpendicular to said horizontal axis.

17. In a mining machine, a truck adapted to run upon a track, a power operated horizontal longitudinally extending shaft on said truck, a cutter bar, and means for supporting the same including parts rotatable about a horizontal axis parallel to a line'parallel to the axis of said power shaft and including a plurality of vertical pivots disposable in the vertical plane to which said track is parallel and intermediate tlze opposite sides of said track, one of said pivots being in such position of the parts `further forward than and below the other and both of said pivots being perpendicular to said horizontal axis.

1t. In a mining machine, a truck adapted to run upon a track, a power operated hori zontal longitud'nally extending shal't on said truck, a cutter bar, and means for sul'iporting the same including parts rotatable^ about a horizontal axis parallel to a line parallel to the axis of said power shaft and including a plurality of vertical pivots disposable in` the vertical plane to which said track is parallel and intermediate the opposite sides of said track, one of said pivots being in such position of the parts further forward than the other and both of said pivots being perpendicular to said horizontal axis. and means for varying the relative height of said pivots while in said plane.

19. In a mining mechanism, in combination` Lguiding means, a frame movable longitudinally thereof, a motor driven power shaft mounted on said frame and fixed relative thereto as to movement out of a vertical longitudinally extending plane, parallel to the major dimension of said frame, a rutter bar. a support to which said cutter bar is pi votallv connected for swinging movement, a second support to which said lirst mentioned support is pivotally connected on an axis parallel to the axis of swing of said cutter bar, a pivotal mounting for said second support on said frame permitting Yrotation on a horizontal axis, and driving connections between said shaft and said cutter bar.

20. In a mining mechanism, in combination, guiding means, a frame movable longil'iti llo (itl

tudina-llv thereof. a motor driven power shaft` mounted on said frame and lixed relativel thereto as to movement out of a vertical longitudinally extending plane parallel to the major dimension of said frame. a Cutter bar, a support to which said cutter bar is pivotally connected for swinging movement, a Second support to which said lirst mentioned support yis pivotallv eonneetetl on an axis parallel to the axis of swing of said etttter bar, a pivotal mounting for said second mentioned support on said frame permitting rotation thereof on an axis parallel to a line parallel to said power Shaft, attd driving eentneetions ltetween said power sha ft and said eutter har.

2l. ln a mining mechanism. in eomltinat ion, guitlingmeans,a frame movable longitudinall vtl1ereof.a tnotor driven power ,shaft meunied on said yframe and tixed relati\ e thereto as to movement out of a vertieal longitudinallv extending plane parallel to the major dinten Sion of said fra1tte.a entier lar.a support to whieh said cutter bar is pivotaliv eonneeted for swinging ntovemt nt. a `eeottd support to which said lirst ment ionetl support is; pivotallv eonneeted on ai axis parallel to tlte axis of swing' of Said eutter har. a pivotal mounting for said second mentioned .supA port on Said frame permitting rotat it n thertx4 of on an axis in alinetnent with said power Shaft, and driving connections, betweett said power shaft and said cutter bar.

In a mining meehanism, in eotttbination, guiding means, a .support movable lon gitudinallv thereof` a motor driven power shaft mottnted on said support and fixed relativo thereto as to movement out of a vertieal lt'tngitndinallv extending plane parallel to the major dimension of said support. a, eutter bar, a second suppotgt to whielt said cutter bar is pivotallv t-onneeted for swinging movement, a third support to whieh said second mentioned support is' pivotall)V connected on an axis parallel to the axis ot' swing of said eutter bar, a pivotal mounting for said third Support on said frame permitting rotation on a horizontal axis. driving eonneetions ht tween said shaft attd said eutter bar, and power operated mechanism for ell'et'ting pivotal movement of one of said supports about its'y axis of rotation.`

23. In a mining meehaniun. in eontbina tion. guiding nit-am. a support movable lonw gitudinallv tht reof, a motor driven Vtower shaft mounted on said support and lixtfd relative tht-reto as to movement ot t of a \erti -al longitudinallvv extending' plane, pa allel to the major dimension of said support. a eutter har. a second support to rt lai 'lt said entter har is pivetallvY connecte: for sw inging movement. a third supper-t to whieh .aid seeor-,d mentioned support i` pivotallv connected on an axis parallel to th"v avi` ot' si" cutterltar. a pivotal mounting for mentioned support on .said tirst nanttoned support permittingI rotation thereof on an axis parallel to a line parallel to said powet shaft, driving' connections between said power shaft, and said cutter bar. and powet operated mechanism for etfeeting pivotal movement of one of said supports abottt its' axisv ot' rotation.

2st. In a mining meehanisni, in eontbination, guiding means, :t support movable longitudinally thereof, a motor driven power Shaft mounted on said support and tixed relative thereto as to movement out of a vertieal longitudinally extending platte parallel to the major dimension of said support, a eutter liar, a second support to wltieh said cutter liar is pivotallhv connected for swinging move ment` a third support to which said second mentioned support is pivotallv connected on an axis parallel to the axis of swing of said t-tttter bar, a pivotal mounting for said third mentioned support on said firstV mentioned support permitting rotation thereof on an a v i in alinetnent with said power shaft, drivY ieg etti-neet if ns between said power shaft and sutil entier bar. and power operated mechani.-nt for eti'eeting pivotal movement of one ot' said supports about its axis of rotation.

ln a mining mechanism, in eontbination. guiding means, a sttpport movable longittrhnallv thereof, a motor driven power slutt't mounted on said support and tixed relative thereto as to movement out of a vertical longitutlinall)Y extending plane parallel to the major dimension of said support, a cutter bar. a seeond support to which said Cutter bar is pivotally eonneeted for swingingr movement, a third support to which said seeond mentioned support is pivotall)v conneeted on an axis parallel to the axis of Swing of said eutter liar, a pivotal mounting for said third support permitting rotation on a horizontal axis. driving eonneetions between said shaft and said cutter bar, and power operated nteehanistn l'or etl'eeting pivotal movement of either of said seeond or said third mentioned supports about their respective axes of rotation.

Qt'. ln a mining mechanism. in eomhination, guiding means. a frame movable longitttdinallv thereof. a motor driven power shaft mounted on said frame and lixed relative thereto as to movement out of a vertical lon gitudinallv extenditu;` plane parallel to the major dimension of said frame. a Cutter bar, a support to which said cutter bar is pivotallv eonneeted for swinging movement` a set-ond snttport to whieh said lirst mentioned stipport is pivolallv eonneeted on an axis parallel to the axis ol' swing' of said euttet ltat. pivotal mounting for said seeond mentioned suptort on said frame permitting rotation tlA iitof on an is parallel to a line paralle to aid potrei haft. dt iving eonneetions i tut-er said povet shaft and said euttet tati and powe peti-ital meeltanisni for ellek ttt lltl

pivotal movement of either of said supports about their respective axes of pivoting.

27. In a mining mechanism, incombination, guiding means, a frame movable longitudinally thereof, a motor driven power shaft mounted on said frame and fixe'd relative thereto as to movement out of a vertical longitudinally extending plane parallel to the major dimension of said frame, a cutter bar, a support to which said cutter bar is pivotally connected for swinging movement, a second support to which said first mentionedsupport is pivotally connected on an axis parallel to the axis of swing of said cutter bar, a pivotal mounting for said second mentioned support on said frame permitting rotation thereof on an axis in alinement with said power shaft, driving connections between said power shaft and said cutter bar, and power operated mechanism for effecting pivotal movement of either of said supports about its respective axis of pivoting.

28. In a mining mechanism, in combination, guiding means, a frame movable longitudinally thereof, a motor driven power shaft mounted on said frame and fixed relative thereto as to movement out of a vertical longitudinally extending plane parallel to the major dimension of said frame, a cutter bar, a support to which said cutter bar is pivotally connected for swinging movement, a second support to which said first mentioned support is pivotally connected on an axis parallel to 'the axis of swing of said cutter bar, a pivotal mounting for said second support on said frame permitting rotation on a horizontal axis, driving connections between said shaft and said cutter bar, and power operated mechanism for effecting pivotal movement of either of said supports or'of said bar about its respective axis of pivoting.

29. In a mining mechanism, in combination, guiding means, a frame movable longitudinally thereof` a motor drivenv power shaft mounted on said frame and fixed relative thereto as to movement out of a vertical longitudinally extending plane parallel to the major dimension of said frame, a cutter bar, a. support to which said cutter bar is pivotally connected for swinging movement, a second support to which said first mentioned support is pivotally connected on an axis parallel to the axis of swing of said cutter bar, a pivotal mounting for said second mentioned support on said frame permitting rotation thereof on an axis parallel to a line parallel to said power shaft, driving connections betwecn said power shaft and said cutter bar. and power operated mechanism for effecting pivotal movement of each of said supports and of`said bar about its respective axis of pivoting.

30. In a mining mechanism, in combination` guiding means, a frame movable longitudinally thereof, a motor driven power shaft mounted on said framev and fixed relative thereto as to movement out of a vertical longitudinally extending plane parallel to the major dimension of sai frame, a cutter bar, a support to which said cutter bar is pivotally connected for swinging movement, a second support to which said first mentioned support is pivotall connected on an axis arallel to the axis o swing of said cutter ar, a pivotal mounting for said second mentioned support on said frame permitting rotation thereof` on an axis in alinement with 'said power shaft, driving connections between said power shaft and said cutter bar, and power operated mechanism for effecting pivotal movement ofeach of said supports and of said bar about its respective axis of pivoting.

31. In a mining machine, in combination, guidin means, a frame movable longitudinally iereof, a motor driven power shaft thereon fixed as to movement about a verti cal axis, a cutter bar, a su port to which said bar is pivotally secured or swinging movement, a second support to which said first mentioned support is pivoted for swinging movement about an axis parallel to the axis of bar swing and in front of said first mentioned axis, a pivotal mounting for said second mentioned support on said frame permitting pivoting thereof on an axis extending longitudinally of said guiding means, and power connections between said shaft and bar whereby the latter may be actuated.

32. In a mining machine, in combination, guiding means, a 'frame movable longitudinally thereof, a motor driven powershaft thereon fixed as to movement about a vertical axis, a cutter bar, a support to which said bar is pivotally secured for swinging movement, a second support to which said first mentioned support is pivoted for swinging movement about an axis parallel to the axis of bar swing and in front of said shaft, a pivotal mountin for said second mentioned support on sai frame permitting pivoting thereof on an axis extending longitudinally7 of said guiding means, power connections between said shaft and bar whereby the latter may be actuated, and power operated mechanism for effectinfr pivotal movement of one of said supports arbout its axis.

33. In a mining machine, in combination, guiding means, a frame movable longitudinally thereof, a motor driven power shaft thereon fixed as to movement about a vertical axis, a cutter bar, a support to which said bar is pivotally secured forswinging movement, a second support to which said first mentioned support is pivoted for swinging movement about an axis parallel to the axis i@ of bar swinging and in front of said shaft, a pivotal mounting for said second men-- tioned support on said frame permitting pivoting thereof on an axis extending longitudinally of said guiding means, power connections between said shaft and bar whereby the latter may be actuated, and power operated mechanism for electing pivotal move ment of either of said supports about its respective axis.

34. In a mining machine, in combination, guidin means, a frame movable longitudinally t ereof, a motor driven power shaft thereon fixed as to movement about a vertical axis, a cutter bar, a support to which said bar is pivotally secured for swinging movement, a second support to which said first mentioned support is pivoted for swinging movement about an axis parallel to the axis of bar swing and in front of said shaft, a pivotal mounting for said second mentioned support on said frame permitting pivoting thereof on an axis extending longitudially of said guiding means, power connections betwen said shaft and bar whereby the latter may be actuated, and power operated mechanism for 'effecting pivotal movement of either of said supports or of said bar about its respective axis of pivoting. f

35. In a mining machine, a machine frame including a motor fixed as to rotation about a vertical axis, cutting mechanism actuated by said motor including a cutter bar, and Supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane of cut of' the bar about which the bar may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and means permitting disposition of said pivots in different planes intersecting in a line parallel to the axis of rotation of' the motor.

36. In a mining machine, a machine frame, including a motor fixed as to rotation about a vertical axis, cutting mechanism actuated by said motor including a cutter bar, and supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane of cut oi' the bar about which the bar may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and means permitting disposition of' said pivots in different planes intersecting in u line parallel to the axis of rotation of the motor and for changing their relative disposition in such planes.

37. In a mining machine, a machine frame including a mot-or fixed as to rotation about a vertical axis, cutting mechanism driven by said motor including a cutter bar, and supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane of cut ofthe bar about which the bar may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and disposed Wholly in front of the motor, and means for changing the distance apart of said pivots while they remain parallel.

38. In a mining apparatus, a` machine frame including a motor having a horizontal axis of rotation extending constantly longitudinally of said machine frame, a cutter bar carrying cutting elements oi'bitally moved by said motor, and supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane of' cut of the bar about which the bar may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and means coaxial With one of said pivots for etl'ecting rectilinear adjustment of said bar in a direction parallel to said pivots;

39. In a mining apparatus, a machine frame including a motor having a horizontal axis of rotation extending constantly longitudinally of said machine frame, cutting mechanism actuated by said motor including a cutter bar, and supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane ot cut of' the bar about which the bar may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and means coaxial with said bar pivot for effecting adjustment of said bar rectilinearly along said piv- `ot by power from said motor.

40. In a mining apparatus, a machine frame including a motor having a horizontal axis of rotation extending constantly longitudinally of said machine frame, cutting mechanism actuated by said motor including a cutter bar, and supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane otl cut of' the bar about which the bar may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and means for changing the plane of each of said pivots.

4l. In a mining apparatus, a machine frame including a motor having a horizontal axis of rotation extending constantly loiigitudinally of said machine trame, cutting mechanism actuated by said motor including a cutter bar, and supporting and adjusting mechanism tor said cutter bar providing a pivot perpendicular to the plane of' cut of the bar about which the bai' may swing, a parallel pivot about which said first mentioned pivot and said bar may swing, and means for disposing said pivots in a horizontal or in a vertical plane.

42. In a mining apparatus, a machine frame including a motor having a horizontal axis of rotation extending constantly longitudinally ot said machine frame, cutting mechanism actuated by said motor including a cutter bar, and supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane of cut of the bar about which the har may swing, a parallel pivot aboutwhich said first mentioned pivot and said bar may swing, and means for disposing said pivots in a vertical plane and above or below the axis of rotation of said motor.

43. In a mining apparatus, a machine frame including a motor having a horizontal axis of rotation extending constantly longitudinally of said machine frame, lcutting' mechanism actuated by said motor including` f a cutter bar, Aand supporting and adjusting mechanism for said cutter bar providing a pivot perpendicular to the plane of cut of the ar about which the bar may swingha paral- "lel pivot about which said first mentioned A"-ivot and said bar may swing, and means for isposing said pivots in a horizontal plane at either side of the axis of rotation of said motor.

44. In a mining machine, a truck adapted to run yupon a track, cutting mechanism thereon having a pivoted cutter bar provided with cutting elements moving in an orbit within which the pivot of said bar is disposed, and means whereby said bar may be disposed in a transverse plane beneath the top of said track with its pivot at one side of said track including means for changing the plane of swing of said bar including concentric elements coaxial with the pivot of the latter and cooperating on relative movement to efect a change in plane of bar swing.`

45. In a mining apparatus, a portable body, a motor carried'thereby, a support pivotally mounted on said body for rotation through at least ninety degrees about-a horizontal axis, a second horizontally swingable support pivotally mounted on said tirst support for rotation about an axis perpendicular ,to said axis` and cutting mechanism driven body, a motor carried thereby, a support pivl otally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about an axis perpendicular to said axis; cutting mechanism driven by said motor including a cutter bar pivotally mounted on said second support for swingmg movement relative thereto, and means driven by said motor for adjusting the plane of said cutter bar relative to said second support.

47. In a mining a paratus, a portable body, a motor carried tiiereby, a support pivotally connected to said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally connected to said first support for rotation about an axis perpendicular to said axis. cutting mechanism driven by said motor including a cutter bar pivotally connected to said second support for swinging movement' relative thereto, and mechanism driven by said motor for rotating said first support relative to said b ody, for rotating said second support relative to said first support, and for swinging Asaid cutter bar relative to said second supotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on vsaid first support for rotation about an axis perpendicular to said axis, and cutting mechanism driven by said motor including a cutter bar pivotally mounted 0n said second support for swinging movement relative thereto about an axis parallel to the axis of said second support.

49. In a mining apparatus, a portable body, a motor carried thereby, a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about an axis perpendicular to said axis, cutting mechanism driven by said motor including a cutter bar pivotally mounted on said second sup ort for swinging movement relative thereto a out an axis parallel to the axis of said second support, and mechanism driven by said motor for adjusting the plane of said cutter bar relative to said second support.

50. In a lnining apparatus, a portable body, a motor carried thereby, a support pivotally mounted on said body upon a horizontal axis for rotary movement through at least ninety degrees. a second support pivotally mounted on said irst support for rotation about an axis perpendicular to said axis, a third support Flidably mounted on said second support, and cutting mechanism driven by said motor including a cutter bar pivotally mounted on said third support for swinging movement relative thereto.

5l. In a mining apparatus, a portable body, a motor carried thereby, a support pivotally mounted on said body upon i horizontal axis for rotary movement through at least ninety degrees, a second support pivotally' mounted on said lirst supportfor rotation about an axis perpendicular to said axis, a third support slidably mounted on said second support, cutting mechanism driven by said motor including a cutter bar pivotally mounted on said third support for swinging movement relative thereto, and mechanism driven by said motor for rotating said first support relative to said body, for rotating said second support relative to said irst support, for adjusting said third support relative to said seoond support, and t'or swinging said cutter bar relative to said third support.

52. In a mining apliaratus, a portable body, a motor carried thereby, a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on l bar pivotally mounted on said thir said first support for rotation about an axis perpendicular to said axis, a third support guided on said second support for movement in a plane parallel to the axis of said second support,`and cutting mechanism driven by saidmotor including a cutter bar pivotally mounted on said third support for swinging movement relative thereto.

53. In a mining apparatus, a portable body, a motor carried thereby, a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about an axis perpendicular to said axis, a third support uided on said second support for movement 1n a plane parallel to the axis of said second support, cutting mechanism driven by said motor including a cutter bar pivotally mounted on said third support for swinging movement relative thereto, and mechanism driven by said motor for rotating said first support relative to said body, for rotating said second support relative to said first support, for adjusting said third support relative to said second support, and for swinging said cutter bar relative to said third support.

54. In a mining apparatus, a portable body adapted to run along a trackway, a motor carried by Said body, mechanism driven by said motor for propelling said body along said trackway in opposite directions at different speeds, a support pivotally mounted on said body for rotation through atleast ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about an axis perpendicular to said axis, a third support adjustably mounted on said second support, and cutting mechanism driven by said motor including a cutter support for swinging movement relative thereto.

In a mining apparatus, a portable body `adapted to run along a trackway, a motor carried by said body, mechanism driven by said motor for propelling said body along said traelway in opposite directions at ditferent speeds. a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about an axis perpendicular to said axis, a third support adjustably mounted ori said second support for movement. in a plane parallel to the axis of said second support, and cutting mechanism driven by said motor including a cutter bar pivotally motilited on said third support for movement relative thereto. I

5G. In a mining apparatus, a portable body,

-a motor carried thereby, a support rotatably mounted on said body for rotation through at least ninety degrees on a horizontal axis, a

`second support pivotally mounted on said first support, the axis of said second support being perpendicular to the axis of said first support, a third support adjustably mounted on said second support and adjustable relative thereto by power from said motor, and cutting mechanism driven by said motor including a cutter bar pivotally mounted on slidably guided on said second support forA movement Itoward and from the axis of said first support, and cutting mechanism driven by said motor including a cutter bar pivOtally mounted on said third support for swinging movement relative thereto.

58. In a mining apparatus, a portable body, a motor carried thereby, a support rotatably mounted thereon for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support, the axes of said supports being perpendicular to each other, a third support slidably guided on said second support for movement toward and from the axis of said tirst support, cutting mechanism driven by said motor including a cutter bar pivotally lmounted on said third support for swinging movement relative thereto, and mechanism driven by said motor for rotating said first and second supports about their axes, for adjusting said third support relative to said second support, and for swinging said cutter bar.

59. In a mining apparatus, a portable body, a motor carried thereby, a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about an axis perpendicular to said axis, a third support adjustably mounted on said second support, cutting mechanism driven by said motor including a cutter bar pivotally mounted on said third support for swinging movement relative thereto, and mechanism driven by said motor for swinging said second support relative to said first support and said cutter bar relative to said third support at different speeds in opposite directions.

60. In a mining apparatus, a portable body, a motor carried thereby, a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivotally mounted on said first support for rotation about a vertical axis, Said second support being swingable to a position at a right angle to the major axis of the'apparatus, a third support slidably guided on said second supper( for movelOl ment toward and from the axis 'of'said tix-st support, and cutting mechanism driven by said motor including a cutter bar pivotally mounted on said 'third support for swinging movement relative thereto.'

l. In a mining apparatus, a portable body, amotor carried thereby. a support pivotally mounted on said body for rotation through at least ninety degrees about a horizontal axis, a second support pivetally mounted on said first support for rotation about a vertical axis, said second support being swingable to a'position at a right angle to the major axis of the apparatus, a third support slidably guided on said second support for-movement. toward andifrom` tbe axis of said first support, cutting mechanism driven by said motor incluclinga cutter bar pivotally mounted on said third support for swinging movement relative thereto, and mechanism driven by said motor for adjusting said third support relative to said second support and for swinging said cutter bar about its'pivot.

62. In a mining apparatus, a portable body adapted to run along atraclnvay, a motor carried thereby and permanently fixed against angular movement relative thereto, a support pivotally mounted onsaid body for rotation about a vertical axis, cutting mechanism driven by said motor adjustably mounted on said support for bodily translatory movement relative thereto and including a pivoted cutter bar, mechanism driven by vsaid motor for swinging. said support about its axis, and mecbamsm driven by said motor for adJust- :driven by said motor for sn-'inging said support to bring said cutter' bar axis Wholly outside of the traekway to enable the cutter bar to operate on the mine bottom and for swinging said bar independently of saids'upport..

64. In a mining apparatus, a wheeled body i' adapted to run along a trackway and always having its major dimension extending longi tudinally of the trackway, a motor carried by said body in permanently fixed rigid relation thereto, cutting mechanism actuated'by`said motor including a cutter bar, and supporting and adjusting mechanism for said cutter bar providing a Vpivot perpendicular to the plane of cut of the bar about which the bar may swing, a. parallel pivot about which said first mentioned pivot and said bar may swing, and means coaxial with one' of said pivots for effecting adjustment of-said bar by power from said motor in a direction parallel to said pivot. i

In testimony whereof I aHix -my signature.

CHARLES F. osooon.

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