US946636A - Car-dumping mechanism. - Google Patents

Description

1E. C. GREENE. c1111 DUMPING MBGHANISM.

APPLICATION FILED APR.13, 1908..

946,636. y Patented Jan. 18,1910.

4 SHEETS-SHEET 1.

ATTORNEY I C. GREENE.

GAR PUMPING MECHANISM. u APPLICATION FILED 1126.13, 190s.

Patented Jan. 18, 1910.

4 SHEETS-SHEET 2.

o INVENTIOI?.

Br A a j' ma/vn 4 SHEETS-SHEET 3.

,mom/Er Patented Jan. 18,1910.

E. c. GREENE. GAR DUMPING MEGBANISM. APPLICATION FILED APRJS, 1908.

` 4 SHEETS-SHEET 4.

WIT/VESSES: C) [IVI/ENTOH.

JM if* Q v BY 0% LW? TT 07%/ ArofeNEy v PatendlJan. 18,1910.

" uNiTED- 's'.rafrus 'PATENT onirica.

EEANK o. GREENE, QE CLEVELAND, onto.

cAE-DUMPING MEcH'ANIsM.

Specification ofLetters Patent. Patntd an. 18, 1910;v

1 Application mea Aprii 13, 190s. seria1N.42s,ss5.

i To all whom 'it may concern:

Be it known that I, FRANK C. GREENE, citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio,have invented a new and useful Improvementin Car-Dumping Mechanisms, of which the following is a specification, the principle of the invention being herein eX- plained andthe best mode in which I have contemplated applying that principle, so as to distinguish it from otherinvent-ions- The general class of dumping mechanism to which the-device'forming the subjectmatter of the present application belongs is that designed for use in connection with the dumping 'of mine cars such as 'are employed in coal mines and the like; it is not meant, of course, by this to imply a limitation of the. invention to such field of use alone. present device moreover is still 'more particularly `designed for use in conjunction with superposed tipple tracks arranged as in a co-pending application filed December 4, 1905, Serial No. 290.010, for use in connection with'a double deck cage in a contiguously'located shaft. The dumping mechanism considered by itsclf belongs to a type of device invented by me and broadly set forth in a'co-pending application tiled August 15,

1906, Serial No. 330,652. As distinguished, however, from this. latter device, a's also from the device disclosed in a third application filed February 1, 19,08, Serial No. 413,725, the floating track section that is characteristic of all three types of dumping mechanism, is designed normally to register with the lower of the two superposed tracks instead of with the upper, this being a condition that is occasionally met with in installing the car handling mechanism set forth in the first` application above noted. The present application, however, corresponds with the last of the applications abovenoted'in that it has as one of its ob- E jects the adaptation of the dumping device proper to power operation, whereby atleast certain of the. movements may be positively 'effected and controlled. Incidentally, but by ,direct cooperation of the dumping mechanism, there .is here introduced, .as 'in the application last referred to, a device for contrplling thefeeding of the cars onto such;

mechanism, this device being a specific form of the device described, and generically claimed in such last named application. A

Having thus set forth the general pela- TheA tionship vof the present invention and lthle objects sought to be accomplished, the means constituting said invention will hereinafter be fully described and particularly pointed' out in the claims. i

The annexed drawings and the following description set forth in detail certain mech'l anism embodying the invention, such disclosed means constituting, howeveiybut one of various mechanical forms in which the Y principle of the invention may be used ln said annexed drawings: Figure A"1 is a front elevation of a dumping mechanism wherein the several improvements referred to above' have been incorporated; Fig. 2 is a part section and a part side elevation of the same. showing in connec'ion'therewith the car spotter, or feeding device,` to i which allusion has above been nrde, together with contiguous-portions of the two superposed tracks with which such dumping mechanism stands in onerativerelation` and adouble deck cage of the kind forming the 4subject-matterfof a co-pendi-ng application named in a previous paragraph; in such Fig.' 2. the dumping mechanism is shown in Vits initial' operative position; and F gs.

3 yand 4 illustrate in similar part section and part side elevation successlve operative posi tions of the device, wherein the car received in the position as shown in Fig. 2 is dumped and finally discharged onto-the upper or car discharge track.

The only portion of the general car handling mechanism, referred to above, which has any pertinence to the subject-matter of "theipresent application is illustrated in Fig;

2 of the drawings just described, 'such portion comprising` the upper end A of the shaft and the double deck cage A 4operated a2 of thetwo superposed tracks, while the upper deck af simultaneously receives `an empty carfrom the uppermost o,s of such tipple tracks. vThe passage of the empty car thus onto the cage is lcontrolledby suitablef los y car spotting device that is locate'dintermestop mechanism a4, illustrated diagrammatl diately of the shaft and the dumping station, and, in effect, in the case of the apiparatus illustrated, constitutes the whole of the lower of the superposed track a2; description of`its detailed construction will be deferredr until after the dumping mechan-` ism proper has been taken up and considered.

rlhe primary operative element of the laitvter is a floating track-section Bvthatis supported in a manner presently7 to be set forth in a vertically disposed framework B2, its normal position being in register with the lower tipple track a2, as shown in Fig. 2. Framework B2 desirably includes in its construction plates Z2', arranged on the respective sides of the track-section and provided on their respective inner faces'with' two guide-ways, b2 Z13, in which'are held rollers or guide wheels If* mounted .on the ends of transverse shafts b5 constituting fixed elements in the track-section 'aforesaid The guide-ways b2 b3 are conveniently formed by securing appropriately bent sections of' angle iron to the inner faces of the plates and correspondingsets of such ways are respectively adapted to engage the two sets of guide rollers b4 just referred to. These -ways are formed on the arcs of circles, the foremost 'way b2, having regard to the direction .of discharge, being formed on the arc of a circle that has the upper end of the vreal-most way b3 fora center; while such rearmost way is formedon the arc of a circle that has the lower end of the foremost way for a center. 'The two ends thus referred to as centers of the respective guide ways are each ,turned inwardly so as to forin'pockets in said guide ways adapted to lock the corresponding end of the track section against movement, while the other `end thereof travels along the oth'erguide way.

guide ways, the track section B is designed to aline witghthe lower car delivery-track a that isA inclined downwardly thereto at substantially the same angle as has'already been stated.- Similarly when in its elevated position such track-section is designed to be aline/dwith the uppercar delivery tracka, the relative-heights of the two guide ways being determined with this in view.

Forthe purpose yof imparting to the tracksection the necessary vertical movement 'to thus position the same alternatelyv in register withthe--lower and upper of`the twov super- When resting with the guide rolls in the' .respective lower ends of the corresponding posed tracks, power means are provided. These means in the case in hand' consist of a fluid pressure cylinder C fiXedly mounted so as to incline forwardly from the perpendicular at an angle approximately that illustrated. Such cylinder is connected with a suitable source of fiuid pressure supply,

preferably steam or compressed air, control of whichis had in the usual v-:ay and ata station C either contiguous to the dumping station or removed therefrom, as desired'.

Associated with cylinder C are twol other smaller cylinders c, Fig. Vl, one on each side thereof. These latter cylinders are filled with a suitable liquid, as dead oil, the flow of which from one end to the other is regulated by a common pass pipe c, thereby- .formed with slide-waysaresecured on the under side-of the track-section, one at eaeh side, wherein rollers. oT borne by the crossl head' are held, Fig. l. ltwill thus be seen that not only' isthe track-section bodily re-l ciprocable with'the piston as the latter moves up and down, but that it is adapted to oscillate with respect to the latter to tilt' first*A in one direction, and then in the other, according as first 'one end andjthen the other is free to Amove in the'guide'ways b2 b3.

In order to stop the car as it enters upon .l

the ltrack-section, as also to retain-the same thereon pending. the tilting movement of the track-section during the dumping operation, the forward ends b? of the rails, or angle irons constituting the rails, of the section are turned upwardly as shown, Figs. 2, 3 and 4. It is desirable to avoid, however, the shock that would otherwise' be occasioned both the dumping mechanismnnd'the car if the lat-- ter were allowed to bump directly into such fixed/stop. Accordingly aresiliently. supported secondary stop bs is provided. forwardly of the curved rail ends 67. just de scribed, and so located with reference to the same as to engage the front end of th'e car body just priork to engagement between the wheels of -the car and the fixed stop. Such secondary stop comprises simply a pivotally mounted buffer normally positioned in the manner indicated by means of' a rodb9 pivotallyconnected thereto a'nd to 'the forward lguide sha ft b5, a spring b1. being*` interposed to allow thedesired movement to take place.

As has been stated. the lower a, of the two "superposed tracks 'constitutes at the from the latter of the car held thereby.

same time a car spotting device that regulates the passage of cars from the lower deck a of the cage in the shaft so as automatically to place'successive cars in position to be received onto the floating track section B of the dumping mechanism proper. Such spotting device comprises simply a tilting track-section supported upon v a transverse'shaft aG and bent in a vertical plane so as t'o present two portions iT as respectively adapted .in different positions of thesection to register with the lower deck ofthe cage and with the floating tracksec-IA tion. When ortion a7 ist-hns. in register with track .section B', portion a8 is raised sufficiently toact as a Stop'thereby prevent- -ing the' entrance of afcar onto the ylower track eventhough it berele'ased from the stop o5 on the cage deck. Similarly, a carV after beingreeeived o'nto the tilting section is normally prevented from being discharged onto section B by horns a mounted` upbii longitudinally disposed, resiliently supported, rock-shafts a10 adapted to engage with the treads of the ca'r wheels. Such horns are thus normally positioned by means of a counterweighted lever a secured to the under side of the tilting track section" and connected with the respective rock shafts by means of inwardly directedv arms a12 and links 1.13. This same counterweighted. lever is adapted-to normally maintain the tilting- A track section in positionv to receive a car from the cage. Its forward end a, which is free, projects in such normal position slightly above the front endvof the. section so as to be engaged simultaneously with such foregoing description of the construction of its several component parts and taken in connection with the full illustration in Figs. 2, 3, and Ll of-the drawings of its several intermediate positions. The loaded cars are received one byA one onto the spotting de'- vice from the lower deck of the cage as shown in Fig. Ssand there held pending the return of the floating track section of the dumping mechanism into register therewithv las shown in Fig. 2,111 which position the discharge of4 another 'car from the cage is prevente .f Registration of the` floating trackection with the tilting track-section of the spotting device permits the discharge Suitable actuation of power means C thereupon tilts the rear end of the track section tinctly claim as my invention upwardlyA about the forward guide shaft as an axis until the position illustrated in Fig. 3 is attained; immediately after which the rear guide shaft, becoming Ain turn tired, movement of the forward shaft' begins and the track section is raised into its full'ele-V vated position wherein the car, now empty, glides olf across the short intervening track a3 onto the upper deck of the cage.

Other modes of applying the 'principle of my invention may be employed instead of the one explained, change being made asregards the. mechanism herein disclosed, piovided the means stated by any one of the following claims or the equivalents of such statedmeans be employed. l

I therefore particularly point out and disl. In mechanism of the class the combination with a reciprocable member, of a track-section having sliding pivotal connection therewith.

Q. Inmechanism of the class described, the combination of a reeiprocable member, a. track-section having sliding pivotal connection therewith, and means adapted to oscillate said track-section pending the reciproca-tion' of said member.

3. -Iii mechanism of the class described, the combination of a reciprocable member, a track-section having sliding pivotal con- -nection therewith, and means adapted to vindependently control the movement of the respective ends of said track-section upon reciprocation of said member.

4. In mechanism ofl the class described, the combination of a reciprocable member, a .track-section having` sliding pivotal connection therewith, and aV relatively fixed guide-wayengaging said track-section and adapted to oscillate the same upon reciprocation of said member.

In mechanism of the class described,

the combination of a reciprocable member,

a track-section having sliding pivotal connectiontherewitli, and two relatively fixed guide-ways respectively engaging said tracksection .at points on opposite sides of its pivdescribed'7 ico iio

otal axis and adapted to oscillate the saine l upon reciprocatioii of 'said member.

t3.' In 'mechanism of the class described, the combination of a i'eciprocable member, a track-section having sliding pivotal connection therewith, and corresponding guide-V nieans on each side of said track-section, each such ineaii's including tivo ways of oppositely directed curvature respectively engaging saidtrack-section on'opposite sidesof its pivotal axis.

7 In mechanism of the class described',-

the combination of a reciprocable member,

a track-section havin l nection therewith, an( correspondingguidemeans on each side of said track-section, each' such means ,including two curved ways resliding pivotal cona track-section having sliding pivotal connection therewith, and corresponding Aguidespectively engaging said track-section on opposite sides of its pivotal aXis and having their conca-ve sides directed toward each other. i l n y 8. In mechanism of the class described, the 'combination of a i'ec'iprocable member,

means on each side of said track-section,each such means including two ways respectively engaging said track-section on opposite sides ofv its pivotal axis, said. ways being formed von arms of circles respectively having the uppeixand'the lower end ofthe other way for centers.

'9.In mechanism of 'the class described,

the combinationI of a reciprocable member, a

ytrack-section havingsliding pivotal connection therewith, and corresponding guide- "means on' each Vside ofsaid track-section, eachvsuch means including two ways respectively engaging sai-d track-section on oppolthelower end of the foremost way for a renter.

10. In mechanism of the class described,

' the combination of a reciprocable member, a

track-section having sliding pivotal connec-A tion therewith, and corresponding guideme'ans on each side of said track-section, each such means including two ways respectively engaging said track-section on opposite sides of its pivotal axis, the foremost of said ways, havingregard to the direction of discharge, being formed onthe' arc of la circle having the upper'end of the i'earmost' way for a center, and the last-named way being formed on the arc of a circle having the lower end of the foremost way for a center, such upper and lower ends being turned -inwardly so as to form pockets adapted to lock the corresponding end of said tracksection against movement while the other end thereof travels along the other guidewa In mechanism of the class described, the'combination with a reciprocable tracksection, of 'corresponding guide.- means on each side thereof for oscillating the same pending its reciprocation, each such means including two ways of oppositely directed y curvature respectively engaging said tracksection at longitudinally separated points.

12. In mechanism of the class described,

the combination with a -reciprocable track-l section, of corresponding guide-means on each side thereof for oscillating the same pending its reciprocation, each such means including twocurved ways respectively en-` gaging said track-section at longitudinally separated points and having' their concave sides directed toward each other.

13. In mechanism of the class described,

the combination with a recipi'ocable trackincluding two ways4 respectively engaging said track section at longitudinally separated paints,l the foremostv of said ways, having regard to the'direction of dischargebe ing formed on the arc of a circle havirigfthe upper end of the rearmost way for a center,

and the last-named way being formed on the l arc of a circle having the lower end of the foremost way for a center.v

15. In mechanism of the class described, the combination withV a reciprocable tracksection, of corresponding'guide-means on each side thereof for oscillating the same pending its reciprocation, each such means including two ways respectively engaging said track-section at longitudinally separated points, the foremost oflsaid ways, having regard to the direction of discharge, be-y ing formed on the arc of a circle having the upper end'of the rearmost way for a center, and the last-named way being formed on the arc of a circle'having the lower end of the foremost way for a center, such upper and lower ends being turned inwardly so as to form pockets adapted to lock the corresponding end of said track-section against movement while the other end thereof travels along the other guide-way.

16.' In mechanismffjthe class described, the combination of a reciprocable member, power means .for reciprocating the same, and a track-section oscillatorily supported on lsaid member by a sliding pivotal connection.

y17.v In mechanism of the class described, the combination of a reciprocable member, power means for reciprocating the saine, a

track-section oscillatorily supported o n said member by a sliding pivotal connection, and means-adapted to oscillate said track-section upon reciprocation of said membein l 18. In mechanism of the class described,

the combination with two superposed tracks,

the lower track inclining toward, and the upper track from, the dumping stationg. of a floating track-section normally registering with said rst track and movable intoregister with said second track, said track-sectionbeing adapted to incline in opposite directions to correspond with the inclination of said tracksrespectively. 19. In mechanism of the classdescribed,

the combination of two -superposed tracks, the lower track inclining'toward, and the upper track from, the dnxi'ping'I station; a floating track-section normally .registering with said first track; and power means adapted tol move the samef'into register with said second track, said tracksection being adapted to incline in opposite directions to correspond with the inclination' of said tracks respectively. 4

2Q. In mechanism of the class` described, the combination of two superposed tracks, the lower track inclining toward, and the upper track from, the dumping-stationg-la floating track-section 4normally registering with said first track; powermeans adapte to elevate the same into register with said second track, said track-section being adapted to incline in opposite'directions to correspond with the inclination of said tracks respectively; and means adapted to oscillate discharge the contents of a Acar resting thereon.

21. In mechanism ofthe class described, the combination of the lower track inclining toward, and the upper trackfrom, the dumping station; a oating tracksection normally registering with said first track; power means adapted to elevate the same into register with said second track, said track-section being adapted to incline in opposite directions to correspond with the inclination of said tracks re and means adapted to independ-4 spectively; ently control the movement of the respective ends of said track-section pending its elevation, whereby it is oscillated so as to discharge the contents of a-car-resting thereon.

22. In mechanism of the class described, the combination of two superposed tracks, the lowertrack inclining toward, and the upper track from, the' dumping station; a floating track-section normally registering with said first track and movable into register with said secondtrack, said track-section beingadapted to incline in opposite directions to correspond with the inclination of'said tracks, respectively; a fixed, fluidpressure cylinder; 'and a piston adapted to be reciprocated thereby and having sliding pivotal connection 'with-said track-section, whereby the latter may be elevated into register with the upper of said tracks.

23. In mechanism nf the combination of two superposed tracks, the lower track inclining toward, and the upper track from, the dumping station; a floating .track-section normally registering with said firsttrack and movable into register with saidl second track, said track-sec- 65 tion being adapted to incline in opposite said track-section, pending its'elevation, to

two superposed tracks,-

lwith said first the class described,

directions to correspond with the inclination of said tracks, respectively; a fixed, fiuidpressure cylinder; a piston adapted to be reciprocated thereby and having sliding pivotal connection with said track-section, whereby the latter may be elevated into register with the upper of said tracks; and means adapted to oscillate said track-section pending its elevation, to discharge the contents of a car resting thereon.

24. In mechanism of the'class described,

the combination of two superposed tracks,

the lower track inclining toward, and the upper track from, the dumping station; a floating track-section normally registering with said rst track and movable into register with said second track, said track-section being adapted to incline in opposite directions to correspond with the inclinationof said tracks, respectively; a fixed, fluidpressure cylinder; reciprocated thereby and having sliding pivotal connection with said track-section, whereby the latter may be elevated into register with the upper of said tracks; and means adapted to independently control the movement of the respective ends of said track-section pending its elevation, whereby it is oscillated so as to discharge the contents of a car resting thereon.

25. In mechanism of the class described, the combination ,of two'superposed tracks, the lower track' inclining toward, andthe upper. track from, the dumping station; a floating track-section normally registering track and movable intov register with said second track, said track-sectionbeing adapted to incline in opposite directions to correspond with the inclination of said tracks, respectively; a fixed, fiuidpressure cylinder; a piston adapted to be reciprocated thereby and having sliding pivotal connection with said track-section,

a piston adapted to be) whereby the latter may be elevated into register with the -upper of said tracks; and means adapted to independently control the movement of the respective ends of said.

track-section pending its elevation, whereby it is oscillated so as to discharge the contents of a car resting thereon, such means comprising two relatively fixed guide-ways respectively engaging said track-section on oposite sides of its pivotal axis. 26. In mechanism of the class described, the combination of two superposed tracks, the lower track inclining toward, and the upper track from, the dumping' station; a floating track-section normally registering with said first track and movable into register withA said second track, said track-section being adapted to incline in opposite directions to correspond with the inclination of said tracks, respectively; a fixed, 'fluid-,pressure cylinder; a piston'adapted to be reciprocated thereby and -having sliding. pivotal connection with 'said track-section, whereby the latter (may be elevated intovregister with the upper of said tracks; and corresponding guide-means on each side of said track-section adapted to independently control the movement. of the respective ends of the latter pending its elevation, 'each such means including -two ways of oppositely directed curvature respectively engaging said track- 'section on opposite sides of its pivotal'axis.

27. In mechanism of the classldescribed, the combination oftwo superposed tracks, the lower Atrack inclining toward, and the upper track from, the dumping station; a.l

'track-section adapted to independently control tlie movementof the respective ends of the latter pending its elevation, each such means including two curved ways respec tively engaging said track-section on opposite sides of its pivotal axis and having their concave sides directed toward each other.

28. In mechanism of the class described, the combination of two superposed tracks, the lower track inclining toward, and the 'upper track from, the dumpingv station; a floating track-sectioii normally registering with said first track and movable into register with said second track, said track-sec- -tion being adapted to incline in opposite diinclination` .rections to correspond with the of saidA tracks, respectively; a fixed, fluidpressure cylinder; a piston adapted to be reciprocated thereby and having sliding pivotal connection with said track-section, whereby the latter may be elevated into reg- -ister With the upper of said tracks; and corresponding guide-means on each side of said track-section adapted to independently control the movement of the'respective ends of the latter pending its elevation, each such Vmeans including two ways'respectively engaging said track-section on opposite sides of its pivotalaxis, said'ways being formed on arcs of circles respectively having the upper and the lower end of the other way for centers.

29. In mechanism of the class described, the-combination of two superposed tracks, the lower track inclining toward, and the upper track from, thedumpin'g station; a

nating track-section normally registering with said first track and movable into revister with said 'second track, said track-section .being adapted 'to incline invopposite direc` tions tocorrespond with the inclination of said tracks, respectively; a fixed, fluid-pressurecylinder; a piston adapted to be reciprocated thereby 1 and having sliding pivotal connection with said track-section, whereby the latter may be elevatedinto register with the upper of said tracks; and:Y corresponding guide-means on each side of said track-section adapted to independently control the movement of the respective ends of the latter pending its elevation, each such means including two. waysrespectively engaging said track-section on opposite sides of its pivotal axis, the foremost of said ways, having regard to the direction of discharge, being formed on the arc of a circle formed on the arcof a circle having the lower end of the foremost way for a center.

having the lupper end 'of the rearmostway I for a center, and the last-named way being 30. In mechanism of the class described, e

the combination of twb superposed tracks,-

the lower track inclining toward, and the 'upper track from, the'dumping station;.av

floating track-section normally registering with said first trackaiid movable intoV register with said second track, said track-section being adapted to incline in opposite directions to correspond with the inclination of said tra-cks, respectively; a fixed, fluid-pres- -sure cylinder; a piston adapted to independently control the movement of the respective ends of the latter pending its elevation, each such means including two ways respectively engaging said track-section on opposite sides of its pivotal airis` the foremost of said ways, having regard to the direction of dis-v charge, being formed on the arc of a vcircle having the upper end of the rearmost'way Afor a center, and the last-iiamed way being formed Von the arc of a circle having the lower end 'of'.(the foremost 'way for a center, such upper and lower ends being turned inwardly'so as to form pockets adapted" to lock the corresponding end of said tracksection against movement while the other end thereof travels along the other guideway.`

31. In mechanism of the class described,

the combination with-a discontinuous track,

of means for controlling the-passage of cars therealong, such means comprising an interposed tilting tracksection adapted in one position to receive a car from one portion of saidy track and in another position to discharge such car onto the other portion thereof, said track-section serving, whenl in such lastnamed position, as a stop for cars -on such first trackportion, means controlling the discharge of a car from said track-section, and. means adapted normally position and said last named means operative.

'to maintain said track-section in such first 32. ln mechanism of the class described, the combination with a discontinuous track,

of means for controlling the passageof cars therealong, such means comprising an interposed tilting track-section adapted in one and coiinterweight means adapted normally to maintain said track-section in su li iirst position and said stop operative.

33. In mechanism of the class described,"

the combination with a discontinuous track, of means for controlling the passage of cars therealong, such means comprising an interposed tilting track-section adapted in one position to receive a car from one portion of said track and in another position to dis,

charge such car onto'the other portion thereof, said track-section serving, when in such last-named position, asa stop for cars on suoli Iirsttrack portion, a movable stop on said track-section for' controlling thedis chargel of a car therefrom, and accounter- Weighted lever connected with said stop and` tending both to render thevsame operative and'to maintainsaid track-section in such first position. s

` 34. In mechanism of the class described,`v '1 the combination of a car deliveryftrack, a movable tracksection and means for oo ntrolling thepassage of carsfromsaid track to said track-section, said means comprising an interposed tilting track-section adapted in normal position to` receive a car from said track and in another to discharge the same onto said first track-section, said tilting tracksection serving, When in such lastiiamcd position, as a 'stop for cars on said track, an independently operable stop on said tilt-ing track-section for controlling thel discharge of a car therefrom, and means tending both to maintain said track-secn tion in normal position and to render said stop operative, sa-id first track-section being elfectivc, on coming into register With said tilting track-section, to render said stop inoperative.

35. ln mechanism of the class described.

the combination otl a cardelivery track, a movable track-section, and means for controlling the passage of cars from said track to said track-section,`said means comprising an interposed tilting track-section adapted in normal position to receive a car from said track and inanother to'dischargc thesanie onto said first track-section, said tilting `track-section serving, When iii such .lastnamed position, asa stop for cars on said track, a movable stop on said tilting trackvsection for controlling the discharge of a car therefrom, and acounterweighted lever connected with said stop and tending both to render the same operative and to maintain 'said tilting track-section in normal position,

saidirst' track-section being adapted, on coming into register with said tilting tracksection, to engage said lever, thereby rendering said stop inoperative.

Signed by Ame this 25th day of March,

FRANK C. GREENE. Attested by:

O. V. GREENE,

JNO. F. OBERLIN.y

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