US1884986A - Mining machine - Google Patents

Description

Gm, 25, W32. 1.. M7 WELD ET AL MINING MACHINE 2 Sheets-Sheet Filed Oct. 31, 1930 I NVENTORS Law's/71. Wzd J5 fill/17. 0/112! BY dlzzrezzce I I .Berh'lew Get. 25, 1932. L. M. WELD ET AL 1,884,986

MINING MACHINE Filed Oct. 31, 1930 2 Sheets-Sheet 2 INVENTORS I Laazsfll. b Jillubli. 0mm

Clarezwefi'. Berlilew T RNEY.

:i go tional view.-

Y in top plate for the arm.

Patented Oct. 25, 1932 e mm 1,884,98&

Lor s mwnLn, mm 11 our-ER, AND CLARENCE n. BERKLEY, or nnxnnsiaann, j PENNSYLVANIA' Y Jimmie MACHINE i Application med; October: 31, 1930; Serial: m. 49:2;540;

The presentinvention: relates particularly that p milling machines in whichan endtess inv cutter is employedlfor undert mg. purposes.

The primary object of the presentinve'n tionis to provide an apparatus that is very simple in construction, is very light in weight. and compact, as-a consequenceof which. it can. be usedv in. small mines is readilyhandled,

m andrequires a relatively small amount of power to operate, making it possible to be driven. from storage: batteries,v so: that it may be used in isolated places where an electrical power line is not available.

21 The preferred embodiment of theinvention is illustrated in the accompanyingv drawlngs, wherein:

Figure. 1. is aside eleyation'of the machine. Figure 2 is a vert1carl longitudinal. sec- Figure 3 is a. horizontal.sectionalview.

Figure 4 is a detail cross sectional view on the line 4.4 of Figure 2.. 1

Figure 5 isa detailperspective view of the Figure 6 is a. perspective view of the. core frame-for the arms I Figure 7 is a detail perspective view of one of the reenforcing plates. v

Figure-8 is a perspective view of the sprocket wheel carrier employed at the outer end of the arm. V

Figure 9 is a bottom perspective view of the ball race member for the thrust bearing.

Figure lO i's a perspe'ctive view of the" antifriction rollercage. 1

Figure: 11 is a erspeetive view of the journal box forthe said cage.

Figure 12 is a detail perspective one of the pick=carrying links. I

Figure 1?- is a] perspective view ,of the spindle for the outer sprocketwheel.

' Figure is a detail view of one of the draft or winch wheels showing the parts separated. In the structure'- disclosed a; main body View of frame is employed, consisting of a brass pl'ate and a top plate 16' made of relatively heavy sheet or plate metal and separated. by spacer sleeves 17 Through: these sleeves pass tie 7 shown in Figure 4,. thereby producin'gguidebolts that secure the plates and 116 to- 1 gethera 1 I i I firojectingffrom thev rear end of. the body 1 is an arm: designated generallyby the reference numeral. 1-9... This arm has. a 'coreframe. QOcQnsisting ofllongitudinal bars21 connected. bycross, bars 22. The frame may bef'a single piece casting or otherwise suitably constructed. On the under-face. of I this frame: is secured a bottom plate 23,, and. to. the" upper face of the frame. is. secured. a top pl-ate 24,.these,platesbeing elongated'fand extendin not. only beyond the ends of the frame 2(l,but also beyond the sides thereof, as

ways 25 in: the oppositeside edges of the arm.

1 The inner end. of this arm 19extends into the. space between the base and? cap plates 15. and 16 of the body,' and interposed between said. inner, end of saidarm and said. plates are strengthening plates 26. This, assembly is suitablysecured together by rivets 27. or other appro riate fasteners. As. a consequence it wi l he noted-that while the base plate 15 of the. body rests upon, the ground, the arm" is helda slight distance above the same. An. exceedingly light but nevertheless strong frame-work is provided for the cut.- ting mechanism.

Mounted on the central portion of the cap .plate'l6' of the body is a suitable; electric motor 28 that may be of any desired character, but is preferably reversible. It is controlled by a suitable switch 29 mounted thereon. An angular bracket 30, secured to the motor, is also secured to. the rear end of the top plate.- J ournaled in this bracket, is a vertical. drive shaft 31that extends. downwardly through the cap: plate 16, through the upper reenforcing plates 26, and'the top plate 24 of the arm. Thisshaft 31-, as shown particshaft and the'interior of the box 32. Mount ed on said box is a race-way 35 in which are balls 36 borne upon by a wear washer 37.

The washer 37 has restingon it the hub 38. of

a bevel gear 39 keyed to the shaft and in 23 and 24 and beyond the core frame 20,: In

mesh with another bevel gear on the motor shaft 41. There is thus provided not only a roller bearing for the shaft 31, but an anti-friction thrust bearing also.

Mounted on the lower end of the shaft 31 between the inner ends of the plates 23 and 24 is a sprocket wheel 42. Another sprocket wheel 43 is mounted at the outer or rear end of the arm 19. i For this purpose a substantially U-shaped carrier frame 44 is slidably mounted between the outer ends of the plates this carrier 44 is located a spindle 45 on which the sprocket wheel 43 is journaled. The ends ofthe spindle are angular and are engaged in openings in the top and bottom ofthecarrier 44 and said angular ends project into elongated guideways 46 formed in the top and bottom plates 23 and 24. A cap piece 47 is preferably secured to the upper end of the spindle 45 and overlies the upper slot 46. In order to adjust the carrier 44 and the sprocket wheel 43 and hold the same when adjusted, a threaded shank 48 is secured to the rear end of the carrier and slidably passes through an opening 49 in the adjacent cross bar 22 of the core frame 20. A nut 50, threaded on this shank 48, and bearing against the cross bar 22, serves to act as means for forcing the carrier outwardly or rearwardly of the arm and hold it against return movement. The top plate 24, as shown particularly in Figures 2 and 5, has an opening 51 giving access to the nut 50.

An endless cutter chain passes around the sprocket wheels 42 and 43 and has its side stretches operating in the guideways' or grooves 25 formed by the side extensions of the plates 23 and 24 beyondthe longitudinal bars 21 of the core frame (see Figure 4). This chain consists of heavy links 52 having outstanding portions 53 provided with transverse sockets 54 to receive the picks 55 which are held in place by vertically disposed set screws 56 that are located outside the edges of the top and bottom arm plates 23 and 24, so that they are entirely available. The heavy links52 are connected by sets of lighter links 57 which serve to complete the chain.

Mounted on the rear end of the top frame behind the motor 28 is a winch. The mounting consists of a pair of brackets 58 in which is a horizontal transversely disposed shaft 59. On the central portion of this shaft, between the brackets 58, is fixed a ratchet wheel 60 adapted to be held against rotation in one direction by a pawl 61. A hand lever 62 has a forked end 63 fulcrumed on the shaft 59 on opposite sides of the ratchet wheel 60,

and in the fork is mounted a pawl 64 that operates on said ratchet wheel 60. The ends .of the shaft 59 project beyond the sides of the cap plate 1.6 and have secured thereto chainengaging draft wheels. As shown these dicated at 69. In order that these chains may pass around the greater partof the circumference of the draft wheelsfidler rollers are j ournaled on brackets 71 suitably secured toth-e brackets 58.

It will be understood that this machine is employed as are mining machines of this type. The motor 28 driving the vertical shaft 31, thereby rotates the sprocketwheel 42 and operates the chain cutter. The tautness of this chain cutter can'be maintained by thelongitudinal adjustment of the sprocket wheel 43, which, as already explained, is mounted inv a, movable carrierthat is. moved and'held by the nut 50 on the shank 48. To advancethe machine it is only necessary to operate the hand lever 62.: By reason of the structural features set forth the apparatus is very light in weight and yet is strong to resist the strains and stresses thatmay be brought against it. It is compact and can be readily transported from'place to place and employed in confined spaces. Moreover the structure permits the use of a low powered motor so that if occasion arises, theapparatus can be operated from storage batteries.

From the foregoing, it is thought that the constructiomoperation and many advantages of theherein. described invention will be apparent to those skilled in the art without further description and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to without departing fromthe spirt or sacrificing any of the advantages of the invention.

What we claim, is c 1. In a mining machine, the combination with a body having spaced upper and lower plates, of an arm projecting from the body and also comprising spaced upper and lower plates,'the plates of the arm and of the body being lapped and secured together, a Vertical shaft journaled in the lapped portions of the body-and arm plates, a motor geared to the shaft, and a cutter chain mounted on the arm and actuated by the sh aft.

2. In a mining machine, the combination with a body having spaced upper and lower plates, of an arm projecting from the body and comprising a core and upper and lower plates respectively covering the upper and lower sides of the coreand extending beyond the side margins thereof to form side channels along opposite sides of the arm, said arm plates having their rear ends extending between the body plates and secured thereto, a vertical shaft extending through the body and arm plates and having a sprocket wheel between the rear ends of said arm plates,-an-

other sprocket wheel j ournaled between the outer ends of the arm plates, and a cutter chain extending around the sprocket wheels and operating in the side channels of the arm.

3. In a mining machine, the combination I with a body, of an arm projecting therefrom,

said arm including a core, top and bottom plates covering the'upper and lower sides of the core and having projecting ends, said projecting ends having longitudinal guidee ways, an upright spindle slidable in the guideways, a sprocket wheel mounted on the spindle between the plates, means interposedbetween the spindle and core for adjusting said spindle in the guideways and thereby adjusting the sprocket wheel, a cutter chain that passes around the sprocket wheel, and means on the body for driving the cutter chain.

4. In a mining machine, the combination with a body, of an arm projecting therefrom, said arm including acore, top and bottom plates covering the upper and lower sides of the core and projecting beyond the sides of the same forming side channels, said plates also projecting beyond the outer end of "the core and having longitudinal guideways' in its projecting ends, a carrier frame slidably mounted between said projecting ends, an upright spindle mounted in the carrier frame and having its ends slidable in the guideways,

a sprocket wheel mounted on the spindle within the carrier frame, a cutter chain op erating in the side channels and about the sprocket chain, and means on the body for driving the cutter chain.

tures.

LOUIS M. WELD. JOHN H. OHLER. CLARENCE E. BERKLEY.

In testimony whereof, we aflix our signa-

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