US2334323A - Scraping and loading machine - Google Patents

Description

\ J.-L. GILBERT SCRAPING AND LOADING MACHINE Nov. 16, 1943.

s Sheets-Sheet 2 Fild Dec. 6, 1941 Nov. 16, 1943.

J. I; GILBERT SCRAPING AND LOADING MACHINE Filed Dec. 6, 1941 3 Sheets-Sheet 3 Patented Nov. 16, 1943 "23334323 a soRArINGnNnLoAD NG. ACH

" Jack Leslie'Gilbert, Toronto, Ontario, Canada Applicationbecembcr 6, 1941,; Serial.

9 ol imjsi (c1. fee -22 My: invention relates in particular to 'mining machinery, and hasforitsmajor objects-the mos vision of a scraper mechanism. capable? oi'great extension wh-ichrenders it admirablyhsuitecl for operation in close quarter a and onewhich can. be compacted so that the,machine as a whole which it is incorporated may be movedi from: place to place 'within the limited passage space of a mine. 1

Theinvention consistsessentially of a machinecomprising an arrangement ofi telescopic members pneumatically reciprocated and supported for such movement-by a'lazy-tongdevice for ac-- tuating a scraper. The telescopic-members come" prise cylinderscon-nected tofia system for supplying air under pressure'and controlled by an' arrangement of: valves by which an operator can regulate the action I of the scraper, Thetelescopic members and the lazy-tong device are mounted. upon. a frame having axes on whichthe'scrapenmay be raisedand loweredand also shifted sideWise by manipulation of valves-that control air cylinders. The lazy-tongs arecon- Fig. 21 is a sidev elevation thereof depicting the: scraper hoe in section; I

i 1.3...is a vertical. section 01" 'Eig..2;.. I i

. .4 .is. a. schematic view mostly in section,. showing the telescopic; members, the valves: for actuatingnthei sameand the pipe-line, connections of thepneumatic; system. in which. the

valvesare-incorporated. I t. Fig.5 is; aside view of voiie'oi. thevalves i1; 1ustratedm.Eig;..4, :which valves are of identical.

construction.

:E'ig'. 6 is an. end iviewxthereofshowing the; pedal. asaitappears. insideelevatiom; l

'; '."Fig."'7'iS a side; view of a: loading machinein corporati ng; the invention. L

Eig.: 8: is: a planvievv thereofl 11 :iLike' numerals; .of .reierenceczidgenote similar: parts in each figureot.thegdrawingst ji'iiheiinvention will be. recounted first in. its

application. as machine for useas. a. minestope. scraper,.-as illustrated in: Figs. 1 12.05 6,1111- I elusive; This:comprisesawheeledt body Ml; such nected to the frame by means of sli'dablyguided:

blocks devised to accommodate expansion and two capacities; one as a stope scraper and the.

other as a mine car loader. As. herein disclosed as. a. scraper machine, the device operates to scrape broken ore in square set stopes .to a

grissly or chute so that the material. will drop, Since this operation-.

down the passage thereof. I is at present chiefly performed by manual labor my invention will facilitate and expedite this; work. a j I As herein disclosed. as a loader the clevice opcrates to scrape broken ore onto an apron of ;a.

conveyor, which conveyor. elevates the material and deposits it, in a mine can- The advantages and utility of the invention. will be understood better from the ensuing description in conjunction with'the accompanying drawings-in which;

Eig; 1 is a plan View of themachine-iorguse asavst pe scranen.

asha truck or-jthe likeidesi-rably'equipped with.

caterpillar. treads H: and; preferably supplied. with. an airmotor as the prime; mover by. which. the! machine may-he capable .oii locomotion. air motor ('notshoyvn) Willabfi' cistandarcltype and; provided withan; air. line for connection. to

a source oi compressed. air; which; of. "course; is;

available. in.a,mine-.. The wheeledbody H1 willbe oi suitable construction; and will-provide a plat-- form :Ma'atthe top having a turn table l3; rota.t;- able aboutja vertical: axis M... .q i

Rigidly mounted on the turn table is a pair. or spacedstanciards l5 havin zat. thei -pp rwends an approved; connection for :tiltably supporting: aiirameglliioni a transverse. axis 1:11.; This frame; is composedrofi a pair of spaced members. .I 8' each.

carryingzaventicaleuide beam-Ml. The members.

tflxarexdisposed oppositely. and 830112 is located; at. the inner side. of a. standard; 115: so: as: to ex,- tend-i substantialiy: hOIiZOIItBlIlYfOI movement} in. a; yerticalplanegabout. the t1. Each meimber: L85 mayihave a: trunnion-2&3. ioiirnalled in the adiacentistandardito: constitute the axis. I13. The membersjxlti are tied: to-..each; other for unitary operation. and the. guide :beams ta rigidly carried therebMare-bratbedas atZL-Ir.

:1; Frame. 1:62 is thus; inountedif or. compound. moveg ment, that iszito. say; the. tum, table enables; it. to

h wung: from side tes deiof; the wheeled bo y aw, and; the titan-ions z i n bieit to fi-z il fi fifl the; standards. l5, l

t is intended that the an table 13] han. be

.taken on linepivotal nature.

piston portion 55 within the main cylinder and equipped with a device by which it may be turned to any angle Within a range of movement desirable. Devices are well known in the art for achieving this purpose, however I have indicated in thedrawings a cylinder 22 having one end pivoted to the platform 12 and'having the other end furnished with a rod extending from a double acting piston therein and pivoted to the turn table to one side of its dead centre. The cylinder is operated by compressed air and regulated by valves 23, which maybe'of the type hereinafter recounted. The valves 23 will have pedals, denoted at 24, by which an operator, occupying a seat 25, may manipulate the same.

This expedient is given by way of illustration but not of limitation. r

For the purpose of tilting the frame It about its axis andretaining it in any position of rest, I employ -a double-actingcylinder 26 havin suitable connections for admitting air into and exhaustingit from each end as customary. This cylinder has a yoke connection 21 with theframe' at a point removed from the axis I! and contains a piston 28 whose rod 29 is pivotally united to the turn table l3. Air underpressure fromxa source of supply is controlledby a pair of valves 30 actuated by pedals in juxtaposition to'the pedals 24 aforesaid. Each of the valves 30 isof the four-way type hereinafter. described, and

servesto introduce airinto one end of the .cyl-

inder and at the same time to exhaust air from the other end, When both-valves are in normally closed positi'on,-the' piston is locked against motion and consequently the frame is secured atrest. To raise or'lower the frame to any angular degree it is onlynecessary that the operator depress the proper pedal. Such a valvecontrolled system-needs no further description for it is Well known' in the art. 7

' The telescopic =members project forwardly from. the frame l6 and comprise a main cylinder 3l, a* second cylinder 32 slidable therein and a ram 33. The main cylinder extends coexten-- sively between the-members I8 of the frame and ispreferably non-rigidly connected thereto at its-rear end by means of a cross piece'34 which unitesthese members; The connection is of. a The second cylinder has a theram has a piston portion 36 within the second cylinder and is tubular, the outer endbeing pivoted to a scraper hoe 31. The scraper hoe may be ofany desirable shape or construction as best suited tended. v V

Thetelescopic members providefor great exto the work for which it is intensile movement'so as to impart along stroketo the scraper hoe. They are pneumatically controlled by the pneumatic system detailed in' Fig. 4 comprising a pipeline 38 communicating with the rear end of the main' cylinder 3| and connected by branch lines 38' and 38" to the-casings- Silanjd 40 of valves 41 and 42 respectively, which are of the four-way type. The plug-body 43 that is revolubly seated in the valve 4| has a port 44 by which'communication is established between the branch line. 38': and an air supply line. 45 leading to a source of compressed air. The plug-body 46 that is similarlyseatedin. the

valve 42 has aport 4]by which communication is established between the branch line 38 and an exhaust pipe '48 leading from the :casing 40 and controlled by acock 49. Valves 4| and 42 are actuated by pedals 50 connected externally" tothe plug-bodies 43' and 46 thereof, and are normally-held in closed position by means of a spring as at 5| which ur es the respective pedal against a' shoulder 52 of a stop 53 asshown in Figs. 5 and 6, Valves 4| and 42 are mounted on the platform [2 and grouped with the valves above referred to.

Assuming that the telescopic members are in contracted position, the opening of valve 4| causes air from the source of supply to be conducted by the pipe line3il to the main cylinder 31 so as to act on the piston 35 of the second cylinder and urge it outwardly. Pipeline 38 has a tube 54 centrally extending through the main cylinder into the second cylinder by which air is simultaneously introduced therein to act concurrently on the piston of the ram 33 and drive it outwardly. In this manner a forward stroke isimparted to the scraper hoe, it being understood that valve 42 is closed atthis time.

'A second pipe line, indicated at 55, is connected, to the front end of the main cylinder and is provided with a slidable extension 55 attached to the front end of the second cylinder so as to communicate therewith andat the same time to accommodate reciprocation of thisv cylinder.

Pipe line 55 has branches 5'! and 58" connected to. the casings 39 and 45 of valves 4| and 42 respectively. Branch 5T establishes a com .munication with a port 59 in the plug-body ,43, which port leads .to an exhaust line 60. having a Branch line 58" establishes a com-;' munication with a port. 62 in plug-body 46, and

This

cook 58.-

It will be gathered that this system enables the telescopic members to be reciprocated by the operator to cause the scraper hoe to be alterf nately pushed and pulled It will also be under;- stoodthat the system is operative to lock the telescopic-members in'a'ny position, and that the rate of operation of the scraper hoe can beregulated by using thecocks 49 and BI as throttles for controllingv air supply. I

A paramount feature. of the invention is that the telescopic members areemployed solely to reciprocate the scraper. hoe, and the weight n thereof- ..isftakehby. the lazy-tongs structure,

which comprises two sets of lazy tongs 64 a1;- ranged co-extensivelywith: the. telescopic mem-v bers in straddling relation. Each set of lazy tongs has .its component bars. pivoted at the pointsof intersection and at the meeting ends as usual. their bars joined at the points of intersection and at their meeting endsrby means of cros'sbars 65.; The rear end pair of .bars fit of each set have their pivotal juncture supplied with a block 57 longitudinally slidable in a guide 88 0f a channel-shaped cross section. Thes'eguides are rigidly carried by the members 28 of the frame. I

The rearmosttermini of said bars 66 are pivotally united by means of crossbars 59 to blocks 10 slidably -carried in -the guide beams 19 which are of a channel-shaped cross'section to supply flow from vthe source of The companion/sets, however, have i ported by the truck-body the telescopic membersand the scraperxhoe,rand

that 'anyslight flexing of :th'e-atelescopie members .will not affect theoperatiQnof the device on kmanner whichnthey are 7 account *o-f "the mounted.

vHaving fully recounted my invention-as a stone scraper I shall now Figs. =7 and '8. The loadercompri-ses astruck '13 having wheels 14 for running. on atrack T5. The truck. carries an inclined :conveyor of {the endless belt type,'-indicated at It, which delivers broken oretoacar to be loaded. Theconveyor is of the ordinary type, but is equipped with a specially-designed apron 17' at its receiving end for co-operating with .the scraper device. The apron-is'anupwardly. inclined member sup.- 18. :and curved on an centre isconcentric with table @89. At the, top ,of

arc ,of a circle Whose the axis is of a turn the apron is a downwardly directed chute .piece 85!, and ateach side thereof 1is a wing:82 so C011! struc'ted as to be extensible for increasing the breadth of the apron. The wings operate to enable "material at the sides of the tracls to be scraped onto the conveyor and when not in use can be retracted in ordernot to interfere with proceed to describe its ;ap+ v 'plicatio-n as a mine =car,loa'der' asillustratedin pivoted to onetof said end -.;bars and isirriilarly connectedito the scraper tool "at a distance from the pivotal :connection .o'fthe end bars thereto.

2. -'In a mechanism :of the frame, an arrangement of power operated 'telescopic members .pivotally supported at an end thereby and. projected therefrom, a scraper tool attached to the distal end of the telescopic members, 1 lazy tongs carried ,by the frame co-extemsivelywith thetelescopic members and-straddling the same and pivotally attached to the distal endthereof, whereby detrimental bending stress is relieved by:theLpivotalattachment, and means providing a connection with the :frame'toenable the lazy tongs to, fold and unfold thereon, said means consisting: of guide, pieces slidablelin guide ways arranged longitudinally} and transversely of :the lazy tongs to firmly support them for operative motion.

tion, lazy tongs-carried th movement of the machine inthe :confined space of a mine tunnel. The wings maybe extended by any suitablemechanismnot shown.

The scraper mechanism comprises standards 83 straddling-the conveyor andmounted on the turn table "8d diametricallyfof its axis The standards carry a frame 84 pivoted on an axis 85 and controlled by a double-acting air cylinder 86 similar to] the cylinder '26 already described for raising and lowering the 'scraper'hoe't'i'. The frame 8 3 provides guidepieces "81 "for the lazy tongs "i8 which operate and are connected 'to the scraper hoe in the. manner above related. The telescopic members, generally designated at 89, are identical in construction 'and operatic-rite those previously recountedjin fact the whole scraper mechanism is the same as that ofthe stops scraper, except that'it is mounted on a car loaderof the conveyor type. a

In operation, the scraper hoe is raised and extended over a pile of broken'ore and-then lowered and'retrac-tedtc draw material from the.

and modifications may be resorted to as coming I Within the scope of the appended claims.

What I claim is: v

1. In a mechanism of the class described, the combination with an arrangement of power operated telescopic members projecting from a support, of a scraper tool at the distalterminus of the telescopic members and reciprocable thereby, and means for sustaining said distal terminus and said scraper tool, said means comprising lazy tongs supported for co-extensive motion with the telescopic members and having end bars pivoted to the scraper tool, and a link an apertured piston portion,

the opposite. side of ,3. In a mechanism of :the class described, ;a frame, an arrangement jof telescopic members comprising 'a main cylinder connected to said frame, a second cylinder slidabletherein having an. apertured piston portion, and a ram extendingfrom the second cylinder for Workinga tool, theram being tubularand having a piston .porby said zframe for 00+ acting therewith to support the telescopic members and said tool, and a pneumatic system for introducing air underpressure to saidcylinders and exhausting it therefrom, said system comprising alpipe line communicating with the-main cylinder. and having atube extending therein and into the aperture of the piston portion of the second cylinder, a second pipe line com municating with the main cylinder and having an extensions'li'dable therein and communicating with the second cylinder, four-way valves connected in said pipe lines such that one [valve functions .to advance the second cylinder .and the ram and toexhaust 'airback of the piston portions thereof, and another valve functions similarlyto return'thesecond cylinder and "the ram and to exhaustair from the opposite side of the piston portions thereof, and spring-urged pedals normally retaining thevalves in. closed position. 1 a

4. In a mechanism of the class described, a frame, an arrangement of telescopic members comprisinga main cylinder connected to said frame, a" second cylinder slidable therein having and a ram extend ing from the second cylinder for working. "a scraper tool, the ram being tubular and having a piston portion, an extensile device carried by said frame force-acting therewith to support the telescopic members'and *said scraper -too1=,- and a pneumatic system for introducing air-'un vder pressure to said cylinders and exhausting it therefrom, said system comprising a pipe line communicating with the main cylinder and having a tube extending therein and into the aperture of the piston portion of the second cylinder, at second pipe line communicating with the main cylinder and having an extension slidable therein and communicating with the second cylinder, four-way valves connected in said pipe lines such that one valve functions to advance the second cylinder and the ram and to exhaust air back of the piston portions thereof, and another 'Valve functions similarly to return the second cylinder and the ram and to exhaust air from the piston portions thereof, and spring-urged pedals normally retaining the valves in. closed position.

class described; a

--5.;In a mechanism. of;the class describedf'a, frame, an arrangement of. telescopic members comprising a main cylinder connectedsto said frame, a second cylinderislidable therein having an apertured piston portion, and a ram extending from the second cylinder for working atool, the ram being tubular and having apistonflportion, lazy-tong ;carried by said frame for coactingtherewith to support the telescopi -members and said tool, and a'pneumatic system for introducing air under pressure to said cylinders and exhausting it therefrom, said system'comprising a-pipe line communicating with the'main cylinder and having atube extending therein-and into the aperture of the piston portion of the second cylinder, a second pipe line communieating with the main cylinder and having an ex-' tension slidable therein and communicating-with the seGOnd cylinder, four-way valves connected in said'pipe lines such that one valve functions to advance the second cylinder and the ram and to exhaust air back of the piston portions thereof, and another valve functions similarly to return the second cylinderland the ram and to exhaust air from the opposite side of the piston-portions thereof, and actuating means normally retaining the valves in closed positions.

' 6. In a mechanism of the class described, a frame, an arrangement of telescopic members comprising a main cylinder connected to said frame, a second cylinder slidable therein having an apertured piston portion, and a ram extending from thesecond'cylinder for working a tool, the ram being tubular and having a piston portion, lazy tongs carried by said frame for c acting therewith to support the telescopicmembers and said tool, and a pneumatic system for introducing air under pressure to said cylinders and exhausting it therefrom, said system comprising a pipe line communicating with the main cylinder and having a tube extending therein and into the aperture of the piston portion of the second cylinder, a second pipe line communicating with the main cylinder and havingan extension'slidable therein and communicating with the second'cylinder, and valve means controlling said pipe lines for advancing the second cylinder and the ram and exhausting air back of the piston-portions thereof, and also for returning the second'cylinder and the ram and exhausting 'air fromthe opposite side of the piston portions thereof. I "7. In a mechanism, of the class described, a frame, an arrangement of telescopic members comprising a main cylinder connected to said frame, a second cylinder slidable therein having an'apertured piston portion, and a ram extending from the second cylinder, a scraper toolcarr'ied'by the distal end of the ram, the ram being tubular and having a piston portion; an extensile for co-acting theredevice carried by said frame with to support the telescopic members and the scraper tool, and a pneumatic system for introducing air under pressure to said cylinders and exhausting. it therefrom, said system comprising a pipe line communicating with the main cylinder and having'a' tube extending therein-and into the aperture of -thepiston portion of the second cylinder, a second pipe line communicating with the main cylinder and having a slidable extension communicating with. the second cylinder,-. and valve means controlling said pipe lines for adsecond cylinder and the. ram and vancing the exhausting air back of the plston portions thereof, and also for returning the second cylinder and the ram and exhausting air from'the oppo site side of the piston portions thereof.

8. Ina mechanism of the class describedfa frame, an arrangement of telescopic members 'comprising'a main cylinder pivoted on said frame and projected therefrom, a second cylinder slidable therein, and a ram extending from the second cylinder; a power system for'operating said telescopic members by fluid'pressure, a scraper tool carried by the ramgl'azy'tongs carried by the frame co-extensively with the telescopic memhers and pivotally attached to'the'ram thereof whereby detrimental bending stress is relieved by the pivotal attachment, and means providing aconnection with the frame to enable the lazy v tongs to fold and unfold thereon, said means consisting of guide pieces slidablein guide-Ways arranged longitudinally and transversely of the lazy tongs to frame, an arrangement 'of'telescopic members pivotally supported at an end thereby and projected therefrom, a valve-controlled pneumatic system for operating the telescopic members,'a

scraper tool attached to the distal end of. the telescopic members, lazy tongs carried bythe frame co-extensively with thetelescopic members and straddling the same, and pivotally attached to the distal end thereof,. whereby detrimental bending stress is'relievedby the pivotal attachment, and means providing a connection with the frame'to enable the lazy tongs to fold and unfold thereon, said means consistin of guide piecesslidable in guide-ways arranged longitudinally and-transversely of the lazy tongs to firmly support them for operative motion.

firmly support them for operative JACK LESLIE GILBERT.

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