US1290020A - Mining and loading machine. - Google Patents

Description

N. D. LEVIN.

MINING AND LOADING MACHINE.

- APPLICATION FILED AUG-1.1913. 1,290,020. Patented Dec.. 31,1918.

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MINING AND LOADING MACHINE.

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m D. LEVIN, OF COLUMBUS, OHIO, ASSIGNOR T THE JEFFREY MANUFACTURING comrm, or coimurus, omo, a conromnon or'omo. MINING AND Lonnnvev nacnnm.

Speoloation of Lettera Patent.

Patented Dec. 31, 1918.

Application led August 7, 1913. Serial No. 783,564.

` To all whom z't may concern:

sov

Be it known that I, Nus D. LEvIN, a .citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful lImprovements in Mining and Loading Machines, of which the following is a specification, reference being had .therein to the ac companying drawing.

The invention relates to mining and loading-machinespwhich are provided with means for undermining coal in its natural bed, means for breaking it down out of the said bed, and means for loading it onto cars by means of which it isremoved from the mine.

I am well aware thatmachines for this class of work have been heretofore proposed, but according to earlier proposals, machines constructed to carry on the three operations above enumerated have been adapted only to4 a coal face substantially perpendicu` larly. According to invention, the

attack parallelly to the coal face and can undercut and breakdown a long strip of coal and convey the broken down coal to points` relatively remote fromv the face. The feeding mechanism and the driving mechanism for the undercutting mechamachine can be fed msm can be arranged at points at one side 'of the vertical planes bounding the active part of the undercutting mechanism instead of between the said planes, as in the earlier machines with whi h I am familiar.I This arrangementen'a'tgs the operative parts to be constructed4 much more simply and strongly. The principal object of my invention, therefore, is to provide. a\ machine having its parts arranged .as above described. Another object of the invention is to pros vide in a machine of this general character apl'ate or pain arranged totravel behind the undercutting' mechanism in the plane'of the bottom thereof to receive thc loosened coal and a conveyer arranged to coperate with the pan to remove material therefrom. Still further objects of the invention are to provide certain improved features of construction which will following specification.

In order that the scope of my invention may be fully understood I have shown in fthe accompanying drawings two forms 'of machine embodying the inventionfV It will be understood that the constructions shown -ofa y 3 secured to the the main frame be fully apparent from the center.`

are intended merely to be illustrative of the invention and that various modifications and changes can be made within the scope of the claim appended to the specification.

Referring to the drawin Figure 1 is a diagrammatic view, in plan, mechanism embodying my invention. Fig. 2 is a diagrammatic view showing, in elevation, the outlines of the vertical cutting mechanism and the breaking down devices.

Fig. 3 is a sectional view of'a part of one of the cutter heads.

Fig. 4 is a plan view showing somewhat more in detail the machine shoWn diagram matically in Fig. 1. l

Fig; 5 is a side view of the machine shown in Fig. 4. g A

The machine shown in the drawings is provided with an undercuttingv mechanism which is similar to the mechanisms which have been used for mining machines for long wall work and dercutting transversely across the face of a mine room. It consists of a cutter chain 1 which is driven by a sprocket wheel 2 and which travels in guide ways on a cutter-head main frame casting 4. The sprocket wheel 2 is carried `,bv a vertical head shaft 5 which is journale in suitable bearings 6 and'7. Near the upper end of the shaft 5 is a master gear 8 which meshes with the pinion 9 on the armature shaft of the motor 10. Conveniently located on the main frame is a bracket 11 naled a feed shaft412 carrying a feed rum 13. 14 is a rope adapted to be wound at one end upon the feed drum 13 and to be connected at the other end to a suitable jack 15 which is so located that ,the stress y p will draw the cutterhead into the coal to be cut. Keyed to the lupper end of/ the feed shaft 12 is a worm wheel 16 which is driven by a worm 17 secured to the shaft 18. The shaft 18 is journaled in suitable bearings on and carries a ratchet wheel 19 which can be engaged by a pawl 20. The pawl is mounted on an arm 21,4 which is mounted to oscillate about the shaft 18 as a By means of the lroel 22 the arm 21 isl connected to an shaft 5. ,y ournaled on'the shaft 18 on opposite sides of the ratchet wheel 19 are arms 24 the outer ends of which are connected together by a `trunnioned nut. Threaded in on the rope.

1n which is 'oureccentric 23 on the out of engagement 40 the feed mechanism.

45 v'eyer to breaking downof the upper part of the coal.

this nut isa screw 26 which is connected'to the main frame.

arms into the path of the pawl 20 to hold it with the teeth' of the ratchet wheel. A hand wheel 28 is secured to the screw 26 and by means o f'this hand wheel the screw can be adjusted to move the shield with respect to the pawl. As the pawl is oscillated by means of the arms 21 it will be held out of engagement with the ratchet 19 duringwmoieor less-of its stroke accord,

ing to the position of the shield 27. In this way the operator by means of the hand wheel 28 cancontrol the rotation of the. feed ,i

drum 13. s 1 The main frame casting 4 is extended over the floor of the mine to form a flat plate or pan 29. This plate is positioned in the plane 20 of the bottoni of the korf cutby the undercutting mechanism and is adapted to be pushed under any loose coal or slack and to receive any ooal that may be loosened and broken down upon it. Formed atthe extreme inward and rearward corner of the y plate 29 is` ian-'upwardV extending flange- 30 to which is secured the frameplate 31 of a vertical cutter head. A cutterjchain 33 having cutterbits 34 travels in guide ways at` the edge of the frame. plate 31 and is driven j by the headxvsprocket 35'. Suitable idler sprockets 36, 37 and 38 are corners of the plate 31. (See Fig'. 2).

Formed on the surface of the iange casting 35 30 yare la plurality of ribs 39 extending horizontally into the kerf formed' by the cutter chain and having outw-ard inclined surfaces i adapted to exert a wedging action on the be described will facilitate the Attached to the bed plate 29 with its forward edge adjacent the breaking down wedges' 39, 39 is a gathering conveyer 40 s of the type in which an endless chain 41, traveling in suitable guides 42, carries horizontally extending iiights 43 adapted to gather coal into the trough y44 and conveyit therethrough. The chain 41 is driven by a .suitable head sprocket secuied to a .vertical shaft 45 which is driven lby means of a bevel gear 46. This bevel gear 46- meshes with a bevel pinion 47 on a longitudinal drive shaft 48 which is supported in bearing 49,

50 and 51. The shaft 48 is driven from the main shaft 5 by means of bevel gears 52 and' 53. The foot-sprocket of the conveyer 40 is journaled on a suitable stub shaft secured to the foot casting L54. This casting 54 is sldable with respect to the main frame Mounted upon the arms 24l is a shield 27 adaptedto be carried by the machine along straight lines provided at the this valve the flow of Water can ber of' the conveyer and can be adjustedv by means of the screw 55 .to maintain a proper working tensionin the chain 41.

The shaft 48 carries at a suitable point a bevel gear 56 which meshes with a bevel gear 57 on a transverse shaft 58. This shaft 58 is mounted bearings 59 and 6L` and carries at its inner end the sprocket wheel 35 `for the cutter chain 33.

In order to insure the move ent of the gui-de rail 61 which engages guides on the main frame of the machine and serves to prevent langulaimovement of the machine.

Extending along the working fac/"e` of the coal and parallel thereto is a conveyer 62 adapted to receive coal from the conveyer 40 and carry it parallelly to the face to con. veniently placed cars at the face. This conveyer known form and its details formno part of this present invention; In the form shown in the drawings for purposes of illustration, the conveyer consists of a vsheet iron trough 63 supported at convenient intervals by legs 64 iioor of the mine.

to move the coal along it. Suitable bars or .rails 66 are secured to the legs 64 below the trough! to support the return strand of the chain.

As free floating dust rin a coafl mine ris always 4objectionable I have provided means for preventing may be formed by theA cutter bits. Within the frame castings of the cutter' heads I have` provided passages 67 which are connected by pipes 68 and 69 to `a small rotary pump 70 which can be driven in any convenient way as for instance from the shaft 48 by means of the belt 71. The7 pump 70 draws water from a convenient supply such as the reservoir 72 and forces it through the pipes and assagesabove referred to to jet apertures 3, 73 which arelocated at the ledges of the cutter heads adjacent the chains. These jet apertures are located at the points where the agitation of dust by by moisting` the dust surface to prevent its iiyingfin the air. A yalve 74 is `provided in\.the water supplygpipe and by re lating a minimum which is necessary for eectiveA l-aying'of the dust. l

The claim herein relates to constructions having vertically arranged cutter chains for cutting kerfs on linesinside of the coalface;

and I 'do not .herein claim any of the' 'subjects matter of broader scope appealing in my copending application Ser. No. 783,565, iled Aug. 7, 1913.

What I claim is:

In a coal mining and loading apparatus,

or near the end of may be of any well the escape of such dust as thebits isgreatest and uced to rovide a with suitable restingdirectly upon the An endless dr'ag chain 65 travels along the bottom of the trough ILO the combination of a mainframe, a motor thereon, power devices for moving the fname along lines outsideof and parallel to the coal face, the cutting mechanism for forming a horizontal kerf at the bottom of the coal, the endless chain cutting mechanism for Jliorming a vertical kerfginside of the front falceA of the coal, the horizontal plate carried by the vframe and extending through the horizontal kerf, the vertically arranged plate Secured to the inner edge of the aforesaid plateand arranged to support the said endless vertical `kerf--curttin'g chain and to travel in the vertical kerf, breaking-down wedges carried by the saidvertical/ plate, powervtransmit; ting devices for the vertical` kerf-Lcutting mechanism arranged in the chamber formed 'by the breaking-down device and behind the In testimony whereof `I ailix my signaturel in presence of two witnesses.

- NILs D. LEVIN. Witnesses E. 1:.l SNIvnLY,

T. E. Mmmm.

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