USRE12010E - bentsofx - Google Patents

Description

No. 121cm.

Reissueri luy i5, i992. BEMTSGN. EXVN MACHINE.

, \App1cation (Hed Mar. 8, 1902.)

'ummm l'm' implying HANS .l. lll

shovels.

In excl-nulli:lg-11:21amum ilv cmu-ying; sgml wlai \ excavating devicesV H vcomprises a plate sesaid chains by means of braces m, pivctally secured to saidI plates at one end and to links of the chains at their other ends. Cutters M are also secured belowsaid plates and project beyond the outer edge of same, Yso that the earthv loosened thereby will be taken up by the next succeeding plate. Plates N are secured toV links of said chain adjacent their upper edges and rest with their lower edges upon said excavating-plates, thereby forming aprons by means of which the earth taken up by said plates is prevented from falling back into` the channel. Said aprons-N likewise serve as scrapers for the inner ends of lzo said plates, as hereinafter described.

Each plate or apron N normally forms, in

'conjunction with the next succeeding excavating blade or plate H, a shovel for elevating the material, as best shown in Fig. 4, it being seen that the plate or apron N normally prevents the material which is being carried up by the shovel from falling back through vthe endless carrier, and hence that the plate or apron N serves as a backfor the shovel from the time it receives its load until the time when it reaches the point of discharge and that upon arriving at such point this plate or back N swings outwardly'in a direction to eject the material.

As shown in rFigzA, the plate or apron N is attached to a linke section oE the carrier which is ahead of the link-section to which the scraper or blade H is attached, so that when thecarrier is passing about a directionchangingv device, such as the upper ,sprocket Ji, Fig. 3, the plate Nwill swing outwardly 'hnd independently of the plate l-I with which it is associated, and since the link-sections are hinged together or articulated, as in linkbelt carriers, the plate N will swing as a pivoted plate with relation to its associated plate H. It will also be seen byifurther referring to the drawings that the back plate N of any one bucket is also entirelyindependent in its swing (which occu rs at the point of discharge)l of both the preceding an succeeding blades or plates ll, and hence that by thus independently attaching the plates N to` ,arts of the endless carrier which tort'ng iiulated sections independentcf' the seriti' Ito which the plates il are'attaaiziied fthe shovels can be set apart at any desired distances without proportionally lengthening the links or sections and that when a shovel reaches the point of discharge its back plate will alitldlnaticaliy swing out in a direction to eject the material, which. action ou the part of the back plate or ejector is not dependent upon any swing' or tilt en the part of the plate ll ol' the preceding shovel. In this way the action of' each swinging back plate N can be timed vwith exclusive reference to the moment at which the shovel of which it forms a eomplelnental member arrives at a point suitable for discharge. It will also be seen by dotted lines, Fig. 3, that the' shovels discharge at a time when they are right side up.

Figs. l and 3 clearly show the swinging plates N each associated with one plate or blade H, with quite a space between each plate N and the plate or blade II nextahead of it. This arrangement also permits the plates Il to operate as excavating devices when passing about the lower sprocket, as in Fig. l, in which it will also be seen that the excavating is performed at the rear of the machine and that the carrier-frame inclines upwardly and forwardly toward the front end of the machine. In Figf the outward swing of one of the plates N, passing 'about the upper sprocket, is indicated in dotted lines, the plate H, with which said plate N is associated, being also indicated in dotted lilies. It will also be seen that the plate N, which forms a cleaner or ejector and which normally forms a part of the shovel, is attached at a point outside of such shovel. An apron O, provided With side flanges n, is pivotally mounted between said beams A and depends therefrom with its lower edge resting upon the ground and extending practically parallel with direction of motion of said excavating devices H, so that the latter scrape same, thereby preventing the earth from falling olf same. Pivotally Secured to said beams A and extending over said apron 0 are parallel arms o, carrying weights P at their free ends and connected between their ends by a cross-harp, lying in the path of the scraperplates and adapted to be engaged by the latter as they turn over said sprocket-wheels h, thereby being raised and scraping the earth from said plates in an obvious manner. Just previous to |engaging.; said cross-bar y) said scraper-plates are partially scraped by said aprons N, which as they reach the sprocketwheels h haye their lower ends forced outwardly, as indicated in dotted lines'in Fig. 3, thereby shoving the earth toward the outer edges of said scraper-plates.- As each of the latter moves out of the path cf andrcleases said crosslbar p said arms o suddenly turn to the lower limits et their movement, which is determined by a suitable stop, and being brought to a sudden standstill obviously cause any earth clinging to cross-bar ya tc drop. The earth thus scraped off the plates by said cross-barfalls into a trough Q, whence it is carried by means of belt conveyers Q' to each side of the channel and dropped upon the ground orinto suitable receptacles, as desired. Said belt conveyers (2 are trained over pulleys revolublymonntcd in frames q,-

removably,mounted on said machine and receiving motion by means of suitable transmission devices, particular description of which. is considered superfluous. Upon the extreme end portions of said beanie A is a shaft R, journaletl in bearings and carrying a drum r between its ends, upon which a cable IOC iro

ai' :swing ng n L21@ :mgl .a ani Je?. mnmltud immedm'ely bei.

#L Glenwcut mamwl, wnch 12 E ami I formed in ma?.

l sprocket-wheels, scraper-plates extending between said chains and carried thereby, de-

' vices for depressing the free end of said swinging frame, a. travelingcarriage on the frame ot' said machine, a shaft carried thereby and provided with sprocket-wheels over which said sprocket-chains are trained, and means for locking seid carriage against movement on seid frame to hold sprocket-chains taut.

3. In an exca\'atingn'1ecliine,the combination with a shaft journnled in bearings on the frame of the machine and carrying parallel sprocket-wheels, of a frame pivotslly secured tosaidshaftandadaptedtodepend therefrom, a shaft jonrnaled in hearings on the free end of said freine, sprocket-Wheels carried by said shaft, parallel sprocket-chains trained over said sprocket-wheels on both seid shafts, cntters carried by said sprocket-chainsetintervals adapted to loosen the earth, plates alternated with said cutters and adapted to tske the loosened earth, s scraper pivotelly monnted upon the frame of themachine and adapted to be engaged by said plates to scrape the letter when they approach the upper limits of their motion.

4i.. lu an excavating-machine, the combination with a shaft journeledin bearings on lthe frame of the machine and carrying parallel sprockebwizeels, of e. frame pivots-ily secured to said shaft and adapt-ed to depend therefrom, a shaft journnled in bearings on the free end of said frame, sprccket-wl1eels cnrried by said shaft, parallel sprockebchains trained over said sprocket-wheels on both said shafts, cutters carried by sprocketchains at intervals adapted to loosen the earth., plates alternated with said cutters and adapted to take np the loosened enr-th, a swinging apron pivotally mounted npon the vframe of the machine im miediately in front of said sprocket-chains, n receptacle for earth in front of said apron, und a scraper pivotally mounted above said lspronnnd adapted to engage said plates as v:they npproach the opper limit of their movement to scrape the smile anddeliverthe earth intoseid r ceptac'le.

ln an excavatingnnsohine, the combination with a shaft jonrnalcd in hearings on the frame of the machine and carrying parallel sprocltetozrheels,l oi a f rame pivctall y scc u red to said shaft'nnd adapted to depend therefrom, n shaft journaled in bearings on the free end of said frame, sprocket-wheels carried by said shaft, parallel sprocket-chains trained over` said sprocketwvheels on both said sbatte, cntters carried by said sprocket-chains st intervals adapted to loosen the earth, plates uiten nated with said cutters and adopted to take np the loosened earth, a swinging spron plv. otally mounted upon the frame ofltlrc nerf chine immediately in front of said sprocketchains, a receptacle for earth in front of said apron, conveyers leading from saidreceptacle, and a scraper pivotally mounted above said apron and adapted to engage said plates as they approach .the upper limit el. their n1otion to scrape the same and deliver the earth into seid receptacle.

6. ln an excavating-machine, the ccinbinstion with a horizontal frame, drive-,gear carricci thereby, excavating devices geared to said drive-gear, and n swinging frame nerr 'ing seid excavating devices end adapted to project alcove and below said horizontal freine, a Windlass on the rear end of scid nerizontsi frame connected with the i'free end of said sfr/inging frame, a windlass at the forward end et' said swinging frame, and n crossoeem connected therewith and adapted to ice drawn tightly against-the rcerface of seid swinging freine and the lower face of seid .horizontal freine, to hold said. swinginfr freine in a, loweredposition.

"i. ln en excavatingfmechine, lieconillnetion with a vrinillass carried thereby end adapted to receive :irope secured at one end to e rigid device in the earth in the direction of motion ci' the machine, and a ratchet wheel rigid relativeiy to said Windlnss, s lever pivcieii concentric with seid ratchetwlreel, and a pawl carried by said lever and adapted to engage said wheehof adrivehsft, and reciprocating devices actuated from said drive-shaft and connected. with said lever for imparting 'a rocking :notion thereto, whereby said machine is gradually advanced.

8. .ln an excavating-machine, the combine tion with a. windaes carried thereby, and 'adapted to receive a rope secured at one end to a rigid device in the earth in the direction of motion el. the machine, and a ratchet wheel rigid relatively to seid windiass, a le ver pivoted concentric with ssirl ratchet wheel, and a. pawl carried by said lever and adapted to engage said Wheel, of ad rive-shaft, an eccentric carried by sind d1rive-slraft,nmi an eccentric-rod connected therewith at one end and at its other end 'with said lever for imparting a rocking motion thereto, whereby said machine is gradually advanced,

9. In an excavating-machine, the combination with excavating devices carried oy n moving part et the machine and comprising flat plates extending' practically transversely to their direction of motion, of a scraper sitnated in the path of said plates and adapted to be engaged thereby and forced ont of their path, to scrape said plates, said scrapercomprising a frame consisting of two parallel side plates pivoted at one end to said machine, n cross-piece mounted between the ends of said side plates and v ieghts clirried by the free vende of sFid side plates@ 'i to their direction of motion, ol a serapersituated in the path of said plates and adapted to be engaged thereby and forcedont of their path, to scrape said plates, said scraper beiup,` mounted between parallel arms piyoted at one end to a part of the machine and nor-- .ately behind each of' said first-named plates and projecting beyond the edges of the latter l for looseningr earth to be taken up bythe next succeeding plates.

12. In exeavz'ttng-inachine, a shovel for receiving and elevatingr loosened earth and comprising;r a plate orapron forming an automatic cleaner or scraper and inovably attached at a point outside the portion of the shovel which receives and carries thematerial.

lf3. A self-dumping elevating-shovel havingv a movable scraping or cleaning part arranged with one end in the portion of the shovel which carries the material, and atiaehed at a point'outside such'portion of the shovel, and means for moving such scraping,r or cleaning part so as to force the material outwardly.

il. An elevator comprising a flexible endloss belt passingI over suitable directionchangipg devices, one or more self-cleaning shovels connected therewith, each shovel formingr a receptacle connected to the belt, a movable scraping or cleaning part in the soilearrying; portion. of the shovel and projectinlr therefrom, said cleaning part beingr attached to a section of` the belt at a pointbeyond the soil-carrying part of the shovel and adapted to 'he moved when passing the directionchaznginp,- devices so as to force the material outwardly.

l5. ln an exea.ating-machine, an endless belt proy ided with a series of elevating-shovels each comprising a projecting blade and a plate or apron normally forming a back for 'the slur-,'el, said platos or aprons thus normally termini; backs for the shovels beingr at;

tat-.hed to swini;V independently of the projectiur' blades, and moans for causing such backs automatically swing outwardly and up- I:-` i directions to eject material when are in position for dulnpiuf. nn e.favatting-machine, a suitable nu elevator-frame supported to incline downwardly and rearwardly from the body-frame of the machine; an endless belt snpported to traverse the elevator-frame; and a series of excavating-shovels arranged upon the endless belt and each comprising a projecting blade, and a swinging plate normally forming a back for the shovel, said plates beically swing; outwardly when the shovels are right side np and in position to discharge.

li). ln an-eficavatiIig-machine, a'swinging frame; sprockets at opposite ends of the swinging frame; endless chains trained over the sprockets; plates projecting' outwardly from the endless chains; and plates attached to the endless chains at points between the said eutwardly-projecting plates and forming in conjunction with the latter a series of elevating-shovels; the plates thus attached to the endless chains at points between theoutwardly-projectingn plates being parallelwith the portions of the chains to which they are attached when such portions are between the sprockets on the swingingframe, and beingarranged to swing outwardly from the sprocket- 'chains when said portions thereof pass about the upper sprocketen the swinging frame.

20. In an excavating-,inachine, a swinging: frame arranged to incline downwardly and rearwardly; an endless belt trained over dimotion-changing devices such as sprocketsf at opposite ends of the swinging frame; and means for elevating' the soil comprising a series of plates positioned atintorvals upon and projecting outwardly from the endless belt, and plates attached. to the endless belt at points between the outwardly projecting plates and. arranged to swing outwardly when passingabout the directiou-changing devices; the endless belt being constructed with links,` and the outwardly-projecting and outwardlyswinging plates beine,r attached to different links.

ln testimony whcreol` aliix my signature in presence of two witnesses f y HANS I. BENTSON. 'Vitnesses: CHARLES G. PAon, f

O'rTILIE C.. Famenne.

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