US1686148A - Scraper - Google Patents

Description

2,1923 A l A1,686,148

C. E. DAVIS A orinal Filed March 26. 1923 l2 Sheets-Sheet 1 Oct. 2, 192s. 1,686,148v c. E. DAvls n S GRAPER original Filed March 26'; 1925 2 sheets-sheet 2 Patented ct. 2, 1928.

UNITED" ser CHARLES E. Davis, or DAVENPORT, FLORIDA, AssiGNoR To acont/AN trentinacruia-A s ins-6,1143.

ING coMrANmorcHIcAGo, iLL'INoIs, A "oonPoRATIoN-or.iLLrNoIs. y

sorteren. l

Appucaan fue@ March ze., iszaseriai No. 627,543.1 Renewed 'septemterja 192e.

A This invention relates to improvements in draft operated Scrapers usedforhgathering and transporting' loose material Aand hasfor its principal object to produce an improved form of scraper capable of being initially l:deflected from its normal path'of movement to gather loose material distributed over 'position When 4desired,vthe walls lland" relatively wide areas. A further-object is to provide an improved method of gathering coal or thelike from a mine room.

My invention may best beunderstood by reference to` the accompanying drawings which illustrate one form in which my invention may be embodied. -In the drawings:

' scrap er.

f Figure 2 1sl a planfview 0f vthe scraper.

shown in Figure 1.

Figure 3 is a transverse section ,of theV scraper. l U Y Figures. 4, 5, 6 and` 'i' arefdlagrammatic views illustrating the use and operation of. my improved scraper in gathering coaladjacent the working face of a mine;

,. ferring now to details, the scraper comprises'a body made up of two sidewalls 11a,

` and 11", preferably divergingffrom `the rear to the front end of thescrap'er, although other forms or shapes of scraper body may be provided if desired. The scraper is pref- 'erablybottomless, the wall 11a, 11b being providedwith inwardly extending iiange's 1728,', l2b along their lower margins, to formcutting edges for engaging the material to be gathered@ The walls 11a, A11b are pivotally connected bya hinge, which may-.be of any., suitable form as for instance,k1tmay com-k prisev a pair of eyes `13', 13 on Vone wall 11 .andan intermediateeye 14 in the otherwall 11b, having a hinge pin 15 of any approved pattern extending therethrough.; In the form shown, the side walls 112,11* are hinged centrallyvof therearend, although l' under some conditions it may be desirable to varythe position ofthe hinged connecupper face of the lower iange 12b, and the said lower ange engages a stop 17 yformed on-the upper flange 12a. A crossbar 18 is rigidly attached adjacent the forward end Figure 1 1s a rear perspective view of a" of onevside member, as for iiistance,the"wall y 11"V fand extends acioss'into'V positionftojenf Y gage,the'opposite'side member 115..1Th'e n free. end of said crossbar is provided'withA a projection 19 adaptedr to `register withfan.

through'when the sideV Walls arein closed 11br may be 'rigidly connected,v together lsecuring the vfree end 'offthe 'crossbar181 to wall 11?. For example, a'pin21A may vbeinkserted in a liole] 22 through the projection thelatter is engaged inthe aperture`Y l 19 when Draft means for thel scraper comprises a head rope 24 connected tothe forward end so: laperture 2O inl wall lla'and eXtendthereof the scraperby suitable' means suchja's they terminals 25, 25, secured respectivelytoa` rope 26 connected, to the lrear endl of :the scraper by suitable means"l such as a'ring27 vforward end of walls'lla, and 11b, and'a'tail Y.

whichin the form shown. isrfconnectedito the;V

intermediate eye `14s of the' hinge.` Y

The useandoperation of the scraper.abovei describedrwill .be understood by referenceI toflffigures 4, 5, 6 and 7,V illustrating fits "use in a mine room. In this instancethescrapefr is beingu'sed for gathering, loose materialadjacent the working *faceffof thel minel indicated at 30` Y Aside Waller rib 3 1'A nieets'- the Working face 30 at angle, forming af corner as shown 1n these figures. 'In Figure i a pile of loose'm'aterial has been: deposited on the ydoor adjacent theA working fa'ce`,:the'f toe Vor forward edge of this pilebeing'inditerial" adjacent themside wall A313 is'icleared;

Y 90.` catedV at 32.` The portion of thelo'ose maaway fora purpose that 'will presently appear. Thefscraper is installed for reciprocable `movement along the working facef in ther-usual manner wellknown 'tofthosev familiar V with lmining "methodsl [The l'tail xed by a ack 'or similar' means against the side 'wall or rib 31 and adjacent the work-v diagram.,v VIn the loading I.operation :the scraper` is,pulled-rearwardly bythe tailrope'- into positionsubstantially shown in Figure? 4'. Now," before starting the "forward move rope 26 is-trained over yasheave or guidee ment' of the scraper, the-operator may move the side 11a of the scraperjpivotally away` from the side 11b into a position shown in Figure 5, in which it will Vbe seen that the forward edgeof the wall 11b is pulled about`1j10 10o Y ing face 3Q substantially asshown inthe l Y t Avaried Without i Vpen .fand positioned inthe clearedarea in the corner i the room'. In this position it will be observed that the, hinged portions '11n andrllh-*are spread apart so that the terminals 25, 25 connected to the head rope are substan- A tially in a straight line. The scraper is readyvfor its initial forward movement,'this movement being commenced by placing tension upon the head rope24. `The operator may then direct the hinged portion l1a so as to engage the pile of loose material, the pull on thel head rope beinor applied directly to this hinged portion. further'pullon the draft line tends to closethe hinged walls, but

:1 5 dueto the greater-.resistance exerted by the material en aged by the hinged portion 11a, the other hinged portion 11b will bepulled 'inwardly toward the Working face, als indi- Vcated ln Figure 6.V The movement of the .20" scraper will therefore be initially deflected Sifa `may be initially d1rected toward the `vvor `face as in theiirst instance. Similarl'y, te scraper ma be directed to the' opposite side if desire' by movement of the wallll, Y y d v Y l'th'oughl have` shown and described one `form infwhich vmy fore wish to be understood as limiting` myself tothe speciic construction illustrated hereinv `exee tingg-as specificallylimited in the vapedclaims.A Y t I claim` as my invention: Y Y

I. A scraper provided with forwardly 'eX- tending walls having hinged closed connection atftheir .rear ends whereby said walls may be p'iyoltallyfmoved lateral y respective 66 to each other, a flexible connecting member havin its terminals eachj. connected with one of sai V.walls,and a dra@P linek connected to' i 4the central portion ofsaidlle'xible connecting member". Y i 1 l 2. scra er provided with forwardly extending Vwa lspvotallyy connected at their rear endsV wherebysaid walls may be Vmoved laterally' respective' j to each other, means limitingcthe inward vmovement of said walls,

.tive points of connection lwith the sidewalls i A scraper provided with forwardly eX- invention'may be enibodied, `it will be understood that the con-A stictiori-,and arriargement ofthevr parts may'` eparting from the spirit: and `scope of my invention. Ido not therecansinor tension to be placed on the drag line,

`and

a fleXibleY connecting member having fits terminals each connected with one oi said walls, and a drag line connected to the centra'l'por-r tion of said flexible connecting member.`

3. A scraperprovided with forwardly eX- tending walls pivotally connected at their rear ends whereby said walls may be moved laterally respective to eachother. means lim'- iting the inward movement oi' said walls,'and adrag line connected to a flexible connecting member having'its terminalseach connected with'one ot saidV walls, the total length of said flexible connecting member being great-VI er than the distance between its lresp'ecel' when the latter are in a closed position;Y

tending walls }v ivotally connected at their rear ends lwhereby,said walis vmay beinovable laterally respective to each other means' limiting the4 inwardnioveinent of ysaid walls, av drag line having connection Awith a rflexible connecting member having its terminals eaclr f connected with one ot'said walls, and aftai'l line connected with said scraper.'V i

` V5. A scraper provided with forwardly" exl tending walls pivotally connected together at", the rearward end of said scraper to swing outwardly respective to each other, "means limiting the inward movement of said walls, a flexible connecting member connecting vthe" outer' extremities 'of said walls together and limitinfr the outward movement of said walls",y

f and a drag line operatively connectedfto'` saidflexible connecting member. j A scraper provided with j forwardlyV extending walls p'votally connected at their rear ends whereby `said walls may :bemoved laterally respective to'each other,v means liniiting' the' inward movement of said walls, a lex1ble Aconnecting member operatively con-"100 necting a' drag line `with said movable walls, Y and means for rigidly connecting said walls together.

:7. s The method lof dellecting a (il-ragl line scraper during its initial forward movement under tension, which consists in shifting a movablef side' wall portion ot saidscraper laterally into position toengage a portion of the inaterialfto vbe gathered,Y and thereafterV 11b Where y the' resistal'ice'of the materialV enr-n* gaged by said movablewall portion will cause the' entire scraper to be initially cleflected at an angle to the drag lineQ- Y Y Signed at "Chicagmin theco'unty of Cook tate of Illinois, this 23rd day of March,

i CHARLES E. Davis.v

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