US1665378A - Power shovel - Google Patents

Description

April 1o, 192s.

E. E. PETERsoN POWER SHOVEL Filed Oct. 1'7. 1924 3 lSheets-Sheet l E. E. PETERSON POWER SHOVEL Filed Oot.1'7. 1924 3 Sheets-Sheet 2 April 1o, 192s. 1,6@5378 Q INVENTOR EiwesEPeens'an im l A ORNE? 1 gj FA* VAB w VR April 10, 1928. v 1,665,378 Y E. E. PETERSON POWER SHOVEL Ffiled Oct. 17. 1924 3 Sheets-Sheet 3 gmc/ufo@ vate a drift orother tunnel.

p Patented Apr. 1Q, 1928.

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POWER sHovnn.

' Appnmanmil filed october 17, v1924. serialno. 744,146.

This invention relates Vto power shovels, particularly, although not exclusively, adaptedI oruse in underground mining to excashovels: have the further disadvantage'rof'- being' slowin operation 'because of the time. required/,to 'tur-nthe boom upon its horizontally 'revolving support in emptying. p a load from the bucket. f Y

It isV my object to provide a novel power shovel `Awhich can beoperated in an unusually small space-to rapidly'eXca-vate and? deposit excavated material in a suitable conveyor.

Another object is to simplify and render the operation of a shovel of this kind'more K positive by providing a'chute, integrali or connected with the bucket Mpro'per, v so J arranged4 that by merelyi tilting the chute and bucket the loadmay be hoisted and depositi-` ed in a. conveyance receptacle. f

A further object is to provide a novel and efficient shovel adapted' togoperate upon thef 'Iruthe accompanying.'

' f Vroof as well-as'upon the frontv orend and sides'of a restricted .underground vpassagey This inventional'so includescertain other l novel features of construction which will bef A; more fully pointed" out in theqrfollowing/ 4o specification Vand claims.

drawings: which:

illustrate the best form of: my AVdevicefat.

present known tome, Figure 1 is a side elevation of my improvedy power shovel; Fig; 2A isla plan View ofthe same; Fig.l Sisal' transverse section throughf the vboomfinemf bers and chute, showingftheswivel ljoint between saidmembers and chute" and' Vtheg. l cylinder for imparting longitudinalmoye-l mentto thel scoop and chute;y fis? ay section through one 'of the boom Y`members;

and brace 4there'to'r taken on the line 4:4401?" Fig. 1;;Fig. y5 isa detail, perspective view 'of' one 'ofthe brace' cateh'es'and Fig. 6 is Yader' tail,\side elevation, of the scoop, chute vand operating mechanism, partially in section. p

Referring tothe drawings, I have used the numeral'dto indicateasuitable carfor carryingl mydevice and Z is a housing 'adapt-V ed to enclosethe powerplant which maybe of anyone tot al number 'of wellknown types.

]ivote':d in a large bearing 8 near kone end.v

of the car ,t3-is a turnltable'f) provided on its. base with al'a'rge arcuate rack 10.whichvmay be operated by a pinion 11 Ito turn the table 9. Upon the forward' edgey orv the tablet);

pivotedjin bearings 12a, is a' pair of boom.

members 12, between which, a jscoop 13 andv anintegral-chute 15 aremounted upon. later, ally projecting studsr` The scoopll is closed at its normally forward end and provided with the usualteeth ladaptedfto facilitate drivingsaidendfinto material to be.

excavated. i

#As clearly shown inr Fig-s. 1 chute-.15 extends backward in continuation: of: a scoopll and is openat, its rearwardend '17 tof allow 'excavatedfvmaterial to read? -il'yslide out-.ofthe chute whenQthe chute andv scoop are tilted, as hereinafter described;

EXtendingalongthe bottom-otv the chutelf)l is .af pair of laterally projecting .parallel flanges 18 *adaptedv to -slidably engage guide flanges, 19.v formed on a bucket support` 2O (Fig. 3)'.V Thissupport 20isv` provided with laterally projecting hubs L21, which main.

tain the chute 15in proper spaced relation' l between-the boom.y membersp12@ Tooperate.v y vthe-chuteupontherguide flanges19, a bracket 22 (Fig. v1)is' rigidly;l secured to the bottonr ot the Vchute and isjoined 'a rodv 23 with v a piston within ai cylinder 24, said cylinder'f.

beingrrigidly held inthe supportg20. The

. pistonwitliin; this 'cylinderl 24yis adapted to;

be given reciprocating movement. in the usual l manner? by a, suitable fluid under pressurev which-may be deliveredto opposite'lgendsof. i the* cylinder through vpipes 24a 'andr 24;?, Y

respectively.

' *T0 tilt the SCOOP and chute upon the beam,

a pair ogtcables' 25 are'secured at'their fora ward; ends toa transverse bar i 26. These cabl'esfa-repasse'dfover apair of sheaves27; on?" i r i I theupper 'en'dss of theI boom members 12 andv entend-backward into thei housing '7ffwheref they may be simultaneously,woundupfmor unwoundl fromf asuitable {windlass' or other poweredrivenf mechanisma braces/281 for the broom; members 12 are pivotally connected to the turn tablev 9 `at `their normally Y Y rearward extremities, and the-forward ends of these braces are slidable vinV slots in latertheside of the chute 15.

ally projecting iianges 30 on the members 1'2. A head 31 on each of the braces 28 is adapted to engage the ange 30 to limit forward tilting of the boom members 12, while back-V Ward movement of said members is limited by a stop lug 32 on each of the braces 28.

ATo prevent the pull upon the cables 2,5y during `the hoisting operationfrom drawing A the boom members 12 back against the stopv lugs 32, I provide a catch 33 opposite-each of the heads31. Each ofthe catches 33'is swivele'd upon a pin34a in one of the members 12 and has crank arms 34 and 35. A ,1ug36' on the armi-34 is normally Vheld in engagement-with the head 13 by a Vspring 37 secured at one end to the arm- Yand fixed at its other end upon a small bracket 38 on the member12. Projecting through an arcu-` vate'slot- 39 in the memberr12 is a pin 40`on the arm 35, which is adapted to be struck to actuatethe .catch'by a rigid projection 41 on A support 42 for a receptacle l43 is mounted upon'the table 9. This receptacle 43 is open at its -top to receive excavated material from `the chute15. To facilitate use of the recepf tacle 43 j with an overhead conveyor of the `type employed in under ground mines, I provider means for raising said receptacle and Vits support/42 from its osition wherejit is filled by the chute 15'(t e .dotted line position,'Fig.1),to an elevated position (shown in full lines in 1)*vwherefit may be con- Y veniently attached to a hook or other member 5,0`extending into the housing.A

berof such a conveyor. Thus, the support 42 is carried upon pairs of arms 44 and 45 which are pivoted in suitable'bearings 46 on the table 9 and severally adapted to lo'eactuv ated'byV cranks 47 and48. These cranks47j and 48 lare joined by`links'49 and adapted` *to be swung in arcs'by a power-drivenmem- 1 x Operation., ,j I j Operation, the scoop 13 may beez-{tendedforward by r4paying out the cables 25 and' smultaneouslyadmitting fluid pressure behina fi-harpist@ 'in thezcylinder 24;. TheV -cab1es25may be retracted to tiltthescoopA V4and chute'upon the studs 114. ,During the f yoperation of picking up la load and hoisting it,"the lugs v36f^lhold the heads 31 adjacent'to the'fforward surfaces ofthe Hanges 30, soVV thatthebraces 28 maintain the boom'niemj Y bers 12 in the full line position'A shown :in to retracted within ythe* housing 7 to swingthe Fig. 1, To empty a load, the. cables 2,5 are scoop upward Vand backward upon the studs 14. As the chute 15 approaches its dotted vlineposition shown in Fig. 1, the projections .$1.41 on thesides ofsaid chute, strike the` pins 40 to throw the lugs 36 out of engagement with the head 31, thus allowing the'boom lmembers. 12 to swing backwardagainst the Vstop lugs 32. This, as will be readily under-` stood, causes excavated materialin the scoop 13 to pass backward by gravity through the chute15 and out at the open' end 17 thereof.

The receptacle 43, which has been previouslyV lowered to 'its dotted line position (Fig. 1) f Y "5 i ing 7, now catches the excavated Vmaterial as Y by extending the member from the hous- Vit falls from .the chute -17. By repeating the f above described operation, loads may be de` livered from the scoop 13 to the ,receptacle 43 until the latter is filled. The member 50 is finally lretracted intoY vthe housing' l7 to raise the support 42 and receptacle 43 tothe full line position shown in Fig.V 1', wheresaidreceptacle may be conveniently attached tol Y ,sa i

an overheadvconveyor for vdisposal of the excavated material.

YBy means of the pinion 11 and rack 10,

lthe turn table 9` may be swung horizontally inthe bearing 8 to reach with the scoop 13 all desired parts of the ends, sides and roof Y of the tunnel. It will be noted thatV when the receptacle -43 is loweredVit is located directly above the'axis of rotation of the table 9, so that said yreceptacle is maintained in position to receive lexcavated mate-l rial from .the end 17 of the ychute l5irre- Yso spective of the angular position of the "table "9. Obviously, the scoop 13 maybe extended upward, as indicated in dotted lines of F ig,

1, to reach the roof of the tunnel when material removed therefrom will immediately pass by V{grail/ity dQWn'the chute 15 into the receptacle 43. Y f- Havingrdescribed my-inventionlwhatfl i i claimas newand ters Patent is: ,Y n V- f Y 1. In a power shoveladapted ,forfjtunnel-v ingV iny restricted space, a turntable, a Vboom vdesire to protect by VLetend of saidboom tooperate .upon the roof andV a :receptaclearranged tolreceive exca-l Y I `vated material vdirectly'ffromv said chute,

whensaid scoop iselevated. j

g2. Injapower shovel adapte dfor tunnel-fV ing, a carriage, a boom'pivoted upon a horilzontal axis on .said carriage, a-scoop and Y chute communicating with's'aid scoop,ipivot l edupon's'aid boomfupon a horizontal, axis located aA substantial .distance above said carrige, sai-d scoop being adapted, to bej projected upward abovethe upper .en'd'of said boomY to remove material fromthe roof cfa 11,5 g Y. ofajtunnel, means for extendingand ,118-, j' .Y tractmg saidscoop and chute on said boom,"l means for ltlltlng` said chute. on' said boom vated to discharge itscontents through said nce-meas.

tunne "Lmea'nsfor extend-in andretractinfr 7V D said scoop and chute onffsaidboom, `meansV forl tilting saidf chute? toV raise l 'saidl scoop on said-"boom, meansl for permitting backward pivoting of sa1djboombn'sa1d carriage to.`

emptyvv material fromy saidl scoop. andia jre- 'ceptacl'eJ arrangedk on rs aidcarriagefto 1receive excavated lmate'rial from`| said chute when, saidnscoop is elevated. i

3: Inaf power-shovel adapted for tunneling in restricted space,ra carriage, a pair of boom members tiltably supported on said carriage and projecting obliquely forward therefrom, a scoop and an integralchute swiveled between said boom members, said scoop being adapted to extend upward above the upper end of said boom members to operate upon the roof ofka` tunnel, means for rigidly holding said yboom members in predetermined, forwardly extended, posi-- tion during the operation of said scoop, means for allowing rearward swinging of said boom members-when said scoop is elechute and means for extending and retracting said chute between said boom members comprising a cylinder and piston mounted on the bottom of said chute and adapted to be operated by fluid under pressure.

4. In a ypower shovel a carriage, a boom tiltably mounted near one endof said car- `riage, in oblique, forwardly projecting position, a scoop pivoted on said boom,a chute communicating with said scoop, means for extending and retracting said scoop o-n said boom, means for elevating said scoop to allow excavated material to pass by gravity backward through said chute, anda bracel and catch arranged to maintain said boom in forwardly extended position during Yhoisting and for allowing said boom to swing backward upon said carriage to empty excavated material through said chute.

5. In a. power shovel, a turn table, a boom tiltably mounted near one end of said table in oblique, forwardly projecting position, a

Vscoop and a chute communicating with said,

scoop pivoted upon said boom, means extending and rotating said scoop and chute on isaid boom, means for elevating saidscoop to allow excavated material to pass by gravity backward through sai-d chute,'and abrace and catch arranged to maintain said boom `in forwardly extended position during hoisting and `for allowing said boom to swing backwardupon said carriage to empty excavated material through said chute,

6. In a power shovel, a carriage, a boom tiltably mounted near one end ofy said carriage, means for maintaining said boomin v oblique, forwardly extended position, a

scoop pivoted von vsaid boom, a chute communicating with said scoop, mea-ns for slidably extending and retracting said scoop on said boom, means for elevating said scoop to allow excavated materialto pass by;

ity. backward,` through said. chute andi a catch forl allowing saidrboom to; swing.' backward; upon saidcarriageto empty' excavated material through said chute. f i

7. In 'ag power shovelV adapted fon rtunneling inf-restrictedspace, a;v carriage, apair of boom members tiltably; supported onsadq 'apa carriage. andiprojectin .'nobliquelyf. forwaridajl therefrom, a; scoop an n an integralgohutga-H swiveled between said boom members, said scoop being adapted to extend upward above the upperend of said boom members to op- ,erate uponftheroof ofa tunnel, means for positively holding said boom members in predetermined, forwardly extended position an integral chute to operate upon the roof of a tunnel, means for positively holding said boom members tion during the operation of said scoop, said scoop and chute being arranged to be Vele,-y vated to discharge excavated material through said chute and means for extending and retracting said chute between said boom members comprising a cylinder and piston mounted on the bottom of said chute and adapted to be operated by fluidunder pres-` sure.

vin predetermined, forwardly extended posi- 9. In a power shovel, a turn table, a

of boom members pivoted to swing vertically upon the normally forward periphery of said table, a pair of rigid'braces pivoted upon said table at their normally rearward ends and .slidably attached to said boom vmembers at their forward ends, a scoop and chut-e pivoted to swing yvertically between said boom members, a receptacle carried by to allow excavated material to pass by grav'- ity through said chute into said receptacle,

'and' catches for said braces on said boom [said table, means for elevating said scoop..

members disposedto be actuatedwto allow rearwardswinging ,of said boom when said bucket is elevated.

adapted for use inktunnels and an overhead 10. The combinationwith a power shovelV conveyor of a turntable, a boomtiltably i' 'carriedy upon said table., a scoop and chuteV pivoted upon said boom, means vforelevatinga V saidlscoop too empty lexcavatedmaterial through said chutea receptacle disposed Vatedto bring said receptacle into proximity With said conveyor. i

` l1. Thecornbinationwith aipowerhovel adapted for use in' tunnels and a conveyor,

of a carriage, a boom tiltably mounted upony said carriage, la Scoop and ohutepivoted f upon saidv boom', means for elevatingV said scoop toV empty excavated material through4 said chute, a receptacle disposed on said oar-V riage to receive excavated material vfrom Y said chute, and a support forislad receptacle arranged tobeactuated to bring saidy recep taole into proximity with said"oonveyor.l

In testimony whereof, I have hereunto Y Signed my name to this specilioation.

VERNESTE KPETERSYON l

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