US1579566A - Scraper - Google Patents

Description

April 6,1926. 1,579,566

G. W. PACKER SCRAPER Original Filed April 16. 1 923 Patented Apr. 6,1926,

GZENN -W. PAGKER,v or, CHICAGO}; :ILLIINOIS ASSIGNOR 'ro aoongnm LMANUFAC'LUR- ING commun on c IcAGo,in pmolsge connoxm rox OELILLINOIS.

1 scrum-g Application filedA irill'16,A9253 serial flmfiiiggiifi kel l ewc d sepicmb er252 1925.. i

' To all-whom it mag conca m:v

Be it known that wVn-Peq qsg zi ze of e fi n te w t te fi si ing-E t hif e g i ,t rc'o itybf Q9012 in g wm qf 5 l inois! av infl med; rne p nen s i 1 t i?@ .;'-9 i ing'is a specification;

This in :enti n {815 fi di imv m etsr in;

' scrapers used for transportingldosen gteg 1 rial and. more, pz rticularly to ,scrgpcrs, adapted to have ,reiciprocahle moyeme rt} Ward i and aw a-y mm, the vm a teria l gtq, transported. i V v i 1 y -P Appli t on ari e cit ali.

Number, 410,771", fildfM aj 19;; 1e21,; 511% allowed Qon iFebriiiLry 2 v1l23, a' :scr@per 0 theclassabove described is shown in W11 ,ch

s rilpe mpr esi b b rtiqflj a ii si two rear. cl s re mem rs. hinged ipppgi.

site side walls thei'eo fl these 'hingedlmemhers.

' being. operetively c iIIQQ E Kl ,both f witl the head rope andg with the tail repose as toibe, swung lat erally into open; position wher g-the scraper is moved .rezitwgrdly}; .aljd,ifclosegil when the scraper iszmovedl fqrwardlyg In; the rspecifie form disclosed, inrjthei prior ap -5 plication; the operative connectio n gbegweeri, the head rope and ,phe v rtwo ,hiriged. real; Wall p t onsfi mpr ssfl P in irflfe ible erm end to a cross arm'on'the ,scraiper bodyptheii passes rearwardly about; a ,pul ley pair i'ied ion a closure member, and}- t hericefljfqr igirdly b t? ui f he i 's rz-iv l wh h:

; the .elosure:memberfishinged; i

In rthe pr esc nt iniplfblfd 9f "r lil gdis cl osed irig h rpms nb appl cat on; h iii h rope ,eterm ing ls l-islgcoimecte L closure and efizendsig} it across, the other itelt i i 011 the opposi te'gsidl 1' e c i ni-i zz m l ififi operation is afio mils, each of which is coiir iecltedgi tggits rear showing the lrear Wallv portions in closed 1 Figgre a transyers e section "of :the I i h ll i iii W ll:

- iiif ri' pe mmprisi n a adl o eil' i I hes rep rr invli es -b dyp fio of scrgper'ihaving. no bottom but ga bottom provided without j de I pzigrtig g frpili the fscopeeof my invention, The loyver. of theisigieywalls are inf cutting " edges 16, 16 as dipfa te l gt 18 518 'Tbgjbqttom mar ins. of

. fi onli n k-l e an {iii Oven p it n. i

no, N

ayi gf side Wells? 133F13 ;vveonnectedpby i tl eclosiireQmem be s, are 'preferablyr inclined i or! tqrned inwgrdly so; as "(to form cutting 16; of, the side,,\v ;1;11s.,,, The ar'rangement is A I such that the" closiire fiiemk iersf normally he rear; i -bf iheis ip $1. i eralper digging or gathering a load.

' tend forwardly in crossed relation with each other, LllG terminal passing about a sheai'e or guide adjacent the forward end of the sine wall 13 while the other terminal passes about a similar sheave or guide 25" on the side wall 18". These terminals 2S and 23 may be connected to the. head rope 10 in any suitable manner as for iance in the form shown they are integral and continuous, passing freely about a pulley 2-6 connected with the head rope 10.

The tail rope 11 extends aetween the ends of the wall portions 17 and 1'7 and is provided with a pair of terminals 30, connected to arms 81, 31 extending inwardly from said wall portions. These arms are preferably arranged adjacent the respective pivoted ends of the closures so that when the latter. are in closed position, as shown in full lines in Figure 1, said arms project substantially at right angles to their respective connecting terminals 30, 30, thus affording a maximum leverage for opening the closures when the scraper is moved rearwardly by the tail rope, and also tending to maintain the door in open position while It will be further noted that the arms 31, 31 are arranged to form stops to limit the inward movement of the closure members 17* and 17", as for instance, said arms engage the downwardly extending portions 15 15 of the cross bar 15 when their respective closures are closed, as shown in Figure 1. Means are also provided for limiting the outward pivotal movement of the wall portions, for example, a pair of chains 35, 35 may be connected between the cross bar 15 and the respective closure members.

The operation of the scraper above described is as follows: v

The apparatus is set up in the usual mannor for reciprocable movement between a pile of loose material and an unloading or discharge point. The tail rope 11 is trained over the pile and when tension is placed thereon the scraper is moved rearwardly with the closure members 17*, 17* standing open in substantially parallel relation with each other so as to ofi'er a minimum'resistance as the scraper cuts into the material at the toe of the pile. lVhen the scraper has been advanced sufficiently to gathera load the pull on the tail rope 11 is discontinued and tension is placed on the head rope 10. ()wing to the connection of the head rope terminals 23"- and 23 to the wall portions 17 and 17", respectively, a pull on the head rope tends to pivot the closure members inwardly and close the rear end of the scraper, whereby the material in the scraper will. be enclosed and moved forwardly.

In the preferred construction forming the subject matter of the present invention it will be seen that the crossed arrangement of the head rope terminals 23 and 2S" intermediate the guides 25 and 25 and the clo sure members to which they are. respectively connected, affords a'construction in which the leverage tending to close the closure members is sufiicient' to operate the latter without the use of pulleys or the like, that is to say, the terminals are directly connected to the closure members instead of passing around pulleys as was proposed in my prior application referred to. The arrangement forming the subject matter of the present invention therefore has the advantages of simplicity in construction and quick and positive operation, which have been shown to be desirable in a scraper of this character. The arrangement of the arms 31, 81 to which the tail rope terminals 30, 30 are connected is also such as to provide maximum leverage in opening and maintaining the closure members in open position when tension is placed on the tail rope. These arms also form convenient stops to limit the inward movement of the closures.

Although I have shown and described on form in which my invention may be embodied, it will be understood that the construction and arrangement of the parts may be variedwithout departing from the spirit and scope of my invention. I do not therefore wish to be understood as limiting my self to the specific construction illustrated herein excepting as specifically limited in the appended claims.

I claim as my invention: 1. A scraper having connected side walls, two members normally forming a closure movably mounted to extend rearwardly in open position, and two draft devices having operative connection witlrsaid closure members and tending to move them in opposite directions, one of said draft devices having two terminals each extending about laterally spaced guides on the scraper and thence in l crossed relation with the other to operative engagement with the closure member on the opposite side of the scraper.

2. A scraper having connected side walls, two closure members each pivotally connected with one of the side walls toopen laterally, two flexible draft devices torreciprocably moving said scraper operatively connected with said pivoted closure mem er and end g t6 lea e them 111 qpr t directions, one :ofsaid draft devices having two terminals each extending about a spaced guide mounted'on one side wall, and thence-in crossed relation with the other terminal to operative engagement with the closure member hinged to the opposite side wall. 7 1 v 3. A scraper having connected side walls, two members normally forming a closure movably mounted to extend rearwardly in open position, and two draft deviceshavmg operative connection with said closure mem bers and tending to move them in opposite directions, one of said draft devices having two terminals each extending about laterally spaced guides on the scraper thence and in crossed relation with the other to direct engagement with the closure member on the opposite side of the scraper.

4-. A scraper having connected sidewalls, two closure members each pivotally connected with one of the side walls to open laterally, each of said members having'a projecting arm adjacent the pivoted connections thereof, said arm extending forwardly along the members, and'two flexible draft devices r 1 2 -its adjacent side wall in closed position of v for reciprocably moving said scraper operatively connected with said pivoted closure members and tending to move them in opposite directions, one of said draft devices having a pair of terminals directly connected to said inwardly pro ect1ng arms;

5. A scraper havmg connected side walls,

two closure members each pivotally connected with one of the side walls to open laterally,-'feach of said members having a projecting arm adjacent the pivoted connections thereof, said arm extending forwardly along its ad acent side wall n closed position of the members and forming a stopto limit the inward movement of said members, two flexible draft devices for reciprocably moving sald scraper operatively connected with said pivoted closure'members and tending to Signed at, Chicago, in the county of Cook and State; of lllinois, this 3rd day of April,

GLENN W. manna

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