US1834263A - Car door mechanism - Google Patents

Description

Dec. 1, 1931. w. E. WINE cm DOOR MECHANISM Filed March 28, 1928 ZSheets-Sheet l wuenbo a Dec. 1, 1931.

W. E. WINE CAR DOOR MECHANISM Filed March 28. 1928 2 Sheets-Sheet 2 afwwfwlb Patented Dec. 1, 1931 o NIT D?[ TAT s (PATENT, joFFICE Application filed March 2B, 1928. Serial No. 265,469.

themembers to support the door in'closed position. a l 1 V Other features of the inventionyresiding in particular details'of construction and combination of parts will hereinafter appear and 65 be pointed out in the claims. h

In the drawings illustrating a preferred embodiment ofthe invention:

Figure 1 is a fragmentary side elevational J view of a portion of one of the hoppers ofa .60

ra1lway car of a well known type, showing mechanism involving the invention applied thereto; parts thereof being in section.

.2-is a view similar to Figure 1 illustrating the manner of supporting the door in 65 My invention relates .to railway car door mechanisms for retaining in closed position hinged doors adapted toswing to open posi- I tion underthe influence of gravity to permit '1the lading of the car to'be discharged;

Theprincipal object of the invention is to provide strong, simple and efiicie nt means forretaining car doors of this type in closed position. A. -c

A primary feature of the invention'consists in providingyin combination with a hinged doormovable to'open position under themfiuence of grav ty, means for supporting the door in closed position involving a plurality of members rigidly mounted on the door-and car body'respectively, apivoted member 'hav- Partial 0r P l y 0108651 POSitiOII- ling aQportion engagegble with each of said Fig; 3 is a fragmentary end ele'vational Y rigidly mounted members and means :form- Vie Ofthe Construction shown in'Fig. 1. inga pivotal support for said pivotedmem- I Fig.' 4 is a fragmentary sectional View taken on lineA-t, Fig. 1.. t i

In the drawings, 1 indicates the side sheet or Wall ofa car'hopper and 2 is the hinged door 'for 'closingthe hopperdischarge open-- ing in the usual manner,'the door being preferably hingedly connected to the 'car body to swing to. open position underthe influence of: gravity. Secured to the outer face of the door is a door spreader or stiffening beam 3 I N of preferably channel form having its flanges .volving membqrs idl m t d on the proJecting downwardly. The spreader ex-v door and car body respectively and a mov- -tends transversely of the car and is rigidly able f-memberhaving a portion engageable [connected to the sections of the door on opj with said rigidly mountedmembers for sup positet sides of the car center sill so as top r g thQ'ClOOP'iIl Pa y closed and fully l. cause the door sections to operate as a single closed 'POSltlOI1,'tl16 said portion of the movunit. 1

V able 1nember being insingle'shear-when ;S\ lp- Although aportion fthe door at, one ide P ing f C1001 pa l 'P only or" the car is illustrated, it will be unf j 2; d b e shear'lvhen ,Supportlng derstood' that the door construction on the H 'Fl Q p 3 Q P opposite side of the car is identical; and

" '40 A further feature or the invention consists While only s h i fo orting the door is shown, it will be appreciated that a in providing a railway car having a lading similar device is mounted onthe opposite side I ""g -bel', thesaidportion of the latter member cooperatingwith said rigidly mounted members so as to be in-do-uble shear, thus relieving the pivotal support of saidpivoted member from strain incident to maintaining ""3 the door in'closed position. 7

Another feature of the invention resides in constructing. a railway car, having a door movable to open posltion under the influence o'fgr'avlty, with door locking mechanism 111- di'soharge door movable to open position under theinflue'nce OfgTaVlty,\V1tl1 a door look ing mechanism comprising-a plurality of 15 members rigidly secured to the car body and door respectively, one of the said members having spaced port ons for receiving therebet-ween a portion'o'f theother ofsald'mem- I ber s'ymovablemeans being employed .for Cois ""50 I operating with: the 'saidportlonszot each of arm islrigidly; connected to the door and door of the car so'as to sustainthe door in closed I position at that point; a I: f Rigidly secured to the door spreader ad]a-- scent its outer end-is a door arm-or member ,the inner endiotwhich 1s of angular form 7 having flanges 5-and 6 respectively. The door spreader by rivets 7 and 8 respectively passing through the flanges and 6.

Intermediate its ends the door arm is offset as at 9 to pass around the outstanding flange 10 of the door, and projects outwardly beyond the side edge of the door to form an extension 11 having an aperture 12.

R-igidly mounted on the side sheet 1 of the hopper is a bracket or member 13, any suitable means such as rivets 14, 15 and 16 being employed for this purpose. The bracket 13 is fashioned with spaced portions 17 and 18 respectively, forming jaws which project outwardly beyond the plane of the closed door, the aws being adapted to receive the extension 11 of the door arm. Apertures 19 and 20 are formed in the spaced portions 17 and 18 respectively which, when the door is in closed position, are in registering alinement with the aperture 12 of the door arm extension.

The distance between the inner surfaces of the aws 17 and 18 progressively increases in the direction of opening movement of the' door, and the respectively adjacent surfaces of the door arm extension are so arranged that, when the door is in closed position, they are substantially parallel with the inner surfaces of the jaws.

It will be appreciated that should the parts of the mechanism become distorted or should the door sag upon its hinges, due to the extreme service conditions to which railway cars are subjected, the divergence of 'the inner surfaces of the aws 17 and 18 is such as to guide the extension into proper relation therewith.

Interposed between the bracket 13 and the side sheet of the hopper is a movable door locking member 21, the latter being apertured as at 22 for receiving the inwardly extending boss or lug 23 of the bracket member 13. The diameter of the aperture 22 is greater than that of the boss 23 to permit a relative sliding movement between the locking member 21 and the bracket 13.

The locking member 21 is preferably of hook shape having a normally downwardly projecting portion 24 which is adapted to extend through the apertures 19 and 20 of the jaws and the aperture 12 of the door arm extension.

The outer surface 26 of the portion 24 of the hook is radial, being struck from the rivet 15 as a center, and the portions of the apertures 19 and 20 which cooperate with this surface of the hook are similarly curved. The inner surface 27 of thehook extension 24, and the cooperating portions of the apertures formed in the aws and the door arm exten sion 11, are inclined with respect toline AA, so that the extension 24 of the hook may readily pass through the respective apertures when it is rotated about the rivet 15 as a center. It will'of course be appreciated that upon rotation of the hook to door supporting position the extension 24 thereof forces the door tightly shut.

Due to the action of gravity tending to swing the door open from the closed position indicated in Figure 1, the hook extension 24, by cooperating with the apertures in the jaws and door arm extension, is in double shear'and the pivotal support of the hook is relieved from all strain.

The lowerportion of the face 27 of the hook is relatively inclined and affords a ledge 28 for supporting the door in a position of partial or preliminary closure. Upon reference to Figure 2 it will be seen that, when supporting the door in this position, a portion of the aperture 12 in the door arm exten sion engages the ledge 28 and an opposite portion of the aperture 19, in the upper jaw 17, engages the outer curved surface 26 of the hook extension 24. This latter portion of the hook is thus in single shear when supporting the door in partial closed position and the pivotal support 23 is relieved from strain.

In order that the door arm extension 11 may be readily inserted between the jaws of the bracket 13, a cam or dog 29 is pivotally connected by a rivet 30 to the hook for supporting the latter in an elevated position. Adjacent its upper portion, the bracket 13 is provided wtih a laterally projecting marginal flange 31, the upper surface of which is fashioned with a depression 32 for cooperating with the cam 29 whereby when the latter is rotated into engagement therewith the hook is maintained in a. position such that the door arm extension may be easily brought into cooperative relation with the jaws of the bracket 13. The cam, in addition to the function just ascribed thereto, may advantageously be used to lock the hook in a p0 wherein a mechanical advantage may be utilized to force the door from a preliminary closed position to a final closed position. In

the present embodiment of the invention this means is provided by forming the lateral flange 31 with an apertured extension 35, constituting a fulcrum for a removable lever (not shown). the aperture either from the top or bottom thereof and is disposed so as to engage with an integral lug or projection 36 formed on the outer end of the door arm extension 11.

The lever may be inserted in- Upon rotation of the lever in the proper dinone-nos rection, the, door may beareadilygforcedxfrom the partially closed position :illustrated :in Figure .2 to .:the fully closed position fillustratedain-Figure ,1. 7 1 E r 'lVhen :the .parts of the locking .mechanism are in the positions shown in Figure'11-,:the

door may be permitted to swing into open position under the influence of gravity .by rotating the cam 29 in a clockwise direction through approximately 180 and then moving the hook in the opposite direction. {0 tation of the hook to permit the ;door arm extension 11 to passirom between the jaws of the bracket 13, enables the cam .29 to further rotate until it assumes a substanti-ally vertical position. Afterthe door arm has been thus disengaged from the hook :andzthe door has moved to open position, downward rotation ofthehook :islarrested by-thecurved surface 34 of the cam coacting with thedepression 32 of the bracket.

It will thus beseenthat when is desired toclose the-door, the-door arm may readily" units the hook to move downwardly so that I the ledge 28 {thereof engages a portion of the aperture 12in the door-arm to :maintain 5 apertures for supporting .the door :in-closed the 'door in a position of partial closure.

After the door is thus supported .thecam.

29 is rotated in a counter-clockwise direction so that the book may be forced down wardly to cause the door to move to fully closed position. If suiiicientleveragehcannot be obtained by the coaction betweenfthe portion of the aperture in the door annextension and the inner face 27 of the'hook, the removable lever hereinabove described may be employed .to force the door to closed position. After the hook has been thus ,rotated the cam 29 is-moved intothe position shown in Figure 1 securely .locking the door in closed position. v

I claim:

1. In a railway dump carhaving-a l ading discharge openingythe combination with ca hinged door for closing-said opening, the

door being movable to open position under the influence of gravity, of door *loclflng mechanism involving a plurality of members rigidly secured to the car'bodyfand door respectively, one of said members having portions spaced from each other in a, direction substantially normal to the hinge axis of the door for receiving therebetween a portion of the other of said members, and movable means cooperable with the said portions of each of the members for supporting the door in closed position, saidmeans being movable ma planesubstaritiallylnormal to the-gplane of the-door .2. Ina-railway dumpzcarthavingrailading discharge opening, the combination with "a hinged door for closing said rop.ening,"ithe door, being :movable to :open position under the influence of gravity, of "door locking mechanism involving a emeniber :rigidly mounted onthe door, a member srigidl'ysecured to the car body ehavingaperturedpon tions spaced from each other in 'a direction substantially normal to the "hinge axis ofthe door for receiving therebetween a portioniof the member secured toxthedoor, and :movable means normally carried "by :the car body adapted tobe insertedin the apertures of said spaced, portions for cooperating with "the member carried by :the door to support the door inclosed position. P .7

, :3. In a railwaydump carhavingalading discharge opening, the combination with a hinged door for .closing said opening, the I door being movable to open position under theinfluenceofjgravity, .of-door locking-mechanism involving a plurality of members rig;- idly secured to the door and car zbodyrrespectively, one of said members having I spaced portions for receiving therebetween a portiono'f the other-of said .membersyeach of said portions having apertures capable *of being brought into substantial "alinement: when the door 1s in closed posltion, and mov able means adaptednto be "inserted in' said position. I v .7 .4. In a railway dump car-having :alading discharge opening, the combination Witllljit ate hinged door for closing said -'opening, the

door being movable to open-position under the influence of gravity, "of a member. rigidly mounted on the car body fha-vin'ga portion projecting beyond the plane of the closed door' in e the direction of opening. .movement 'of-the-door, a member rigidly mounted'onthe .door having a portion projecting outwardly beyond "a side edge'thereof, the member mountedon the-car body having j aw-s adapt ed to receive the outwardlyprojecting por-' tion of the member mounted on thedoor, movable means :cooperable withthe jaws of theone member and the outwardly projecting portion of the-other member to support the doorin closed position, andmeans for maintaining said movable means in a positionwhereby the latter will automatically engage said outwardly projecting portion to support the door when it is moved to closed position.

'5. In a rail-way dump ear -having a-lading discharge opening, the combination with a hinged door for closing said op'ening, the door being movable :to open p'osition under the influence of gravity, of a member rigidly mounted on the door having a portion projectlng outwardly beyond the sideedge thereof, a memberrigidly mounted-onthe car-body having jaws for receiving the outwardly projecting portion of the other of said members, the distance between the inner surfaces of said jaws progressively increasing in the direction of opening movement of the door, and means cooper-able with the jaws of' the one member and with the outwardly projecting portion of the other member for supporting the door in closed position, said means being cooperable with said members in a manner such that the door will be forced to closed position as the means is being brought into cooperative association with said members. 6. In a railway dump car having a la-ding discharge opening, the combination with a hinged door for closing said opening,the door being movable to open position under the influence of gravity, of a member mounted on the door having a portion projecting outwardly beyond a side edge thereof, a bracket member rigidly secured to the car body haw ing jaws for receiving the outwardly pro jecting portion of the door member, thei ner surfacesof the aws and the adj acent'sun faces of the cooperating portions of the door member diverging outwardly in the di rection of the opening movement of the door, and a movable means adapted to be insertet in apertures in the jaws of the bracket mere-- ber and jaw cooperating portion of the door member to support the door in closed position. V 7. In a railway'dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the door being movable to open position under the influence of gravity, of a bracket member socured to the car body, a member rigidly mounted on the door, each of said members being fashioned with apertures adapted to be brought into substantial alinement when the door is moved to closed position and means pivotally mounted on the car body having a portion cooperable with the apertures ofboth of said members for supporting the door in closed position, said portion of the pivotally mounted means being in double shear when in door supporting engagement with said members.

8. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the doorbeingmovable to open position under the influence of gravity, of a plurality of members rigidly mounted on the door and car body respectively, one of said members having portions overlappingly embracing portions of the other of said members, said sin-- bracing portions being spaced from each other in a direction substantially normal to the hinge axis of the door, and pivotally mounted means engageable with the said portions of both of the members for supporting the door in closed position, the plane of pivseeaes otal movement of said means being substantially normal to the plane of the door.

9. In a railway dump car having a lading discharge opening, the combination with a I hinged door for closing said opening, the door being movable to open position under the influence of gravity, of door locking mechanism involving a plurality of members immovably secured to the door and car body respectively, and a pivoted member having an angular extension engageable with each of said immovable members for supporting the door in closed position, one of said immovable members having spaced portions engageable with one side of said pivoted member and the other of said immovable members having a portion adapted to be disposed intermediate saidspacedportions and engageable with the opposite side of said pivoted member.

10. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the

door being movable to open position under the influence of gravity, of a plurality of members rigidly mounted on the door and car body respectively, a pivoted member having a portion engageable with each of said rigidly mounted members for maintaining the door in closed position, said member being movable to door supporting position under the influence of gravity, and means forming apivotal support for said pivoted member,the said portion of the latter member being 00- operable with said rigidly mounted members so as to be in double shear and to relieve the pivotal support of said pivoted member from strain'incident to maintaining the door in closed position.

11'; In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the door being movable to open position under the influence of gravity, of mechanism for supporting the door in a plurality of positions of closure involving movable means and a plurality of fixed members, said fixed mem bers being rigidly mounted on the door and car body respectively, one oi? said members having spaced portions and the other of said members having a portion adapted to be interposed between said spaced portions, said movable means being engageable with one of said spaced portions and the said interposed portion for supporting the door in a position of partial closure, and the said movable means being engageable with both of said spaced portions and the interposed portion for supporting the door in a position of final closure.

12. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the door being movable to open position under the influence of gravity, of a plurality of fully closed position.

' 13. In arailway dump-car having a lading discharge opening, the combination With'al hinged door for olo'singsaid opening, the door being movable to open position under the influence of gravity, of' 'a plurality: of members rigidly-mounted on the door'a nd cai body respectively, and. a movable member, having a portion; engageablelwith said rig idly mounted members for supporting the door in partially: closediposition.andiin fully closed position, said. portion of the. movable member beingin single shear: when support ing the door in partially.- closed positionian'df being in: double shear whenxsupportingi the door infully closed positionz, V i .7 :1

I 14; Ina railway dump car having 'a-lading discharge opening, the. combination With-a1 hinged door for. closing'said -.opening.,' the. door being movable to: open: ,position under the;influence.,of. gravity, of door locking; mechanism for supporting; the, door in, par-:

tially closed and fullyfclosed positiomsaidi mechanism involving a. fixed member and a movable member, ;one of; said; members being" mounted onthe car body'- and the other being: mounted on the door, and means operatively:

interposed between the: movable member and 1 the part upon which it is mounted for-main; taining it in a position corresponding to thatassumed by said movablei'member when sup.- porting the door in partially closed positiom 1 5. In a railwaydump car having alading discharge opening, the combination with a; hinged door for closing; said opening, the,

door being. movable to open position 1 under the influence of gravity, 7 of door locking mechanism. for supporting the door in par-1 tially closed-and in fully closed position, said mechanism involving a fixed! member and a; movable member, the latter being adapted to 5 move to locked: position. .underr the influence of. gravity, one of said members. being mounted in the car body andlthe otheronthedoor,

Ineans- 'operatively interposed between the movable member andfthe partup'on Whiohit' is mounted for maintaining'it in a position; corresponding to that assumed i'ifiwhen: supporting the' doorin partially closed position; anii iheans for loc zkingthje"movabl-'em ml ber Vvvhensupportingthe' door in fully closed} position.

- 16.1 In arailway dum car-havinga ri ing;

discharge" opening, the. combination with a: hinged door for closing Said openingji the door being movableto open positloniunder' thex'influence ofgravity, ofia pluralityf of members rigidly'inounted on the d'oo'rand car; s

body respectively. member pivotallyg con; nected to -one of saidmembers and engageab'le with the other of said "members to support thedoor' in a position of. partial closure and? in a position" of final closure; saidpivotal memberbeing adapted to move under the in fluence of: gravity intoboth" door supporting positions" of" closure, land" means 5 operatively interposed between the pivoted" member and the member towhioli is pivotally' connected for maintaining the'pivot'fed: member in a p0 sit'ion corresponding to that assumed -by-gitf.

When supporting the door in apartialiposi tion of closure;

f 117i Ina railw discharge opening, thex'combination' with hinged, door for closingfsaid opening,ithe door being movable to open position'undef the influence ofgravity, of a member rigidly secured to the door and a'member pivotally' mounted on thecaribody and coopera'blewith; the member on the door" forfsupportingf-thef door in partially "closed'and fully'closed'posiay dump car havingia ladin'gi tion, andfmeans operatively'interposedbee tvveenthe car body and pivotedmember'for .supportingftlie' latter: in a positionicorre' spending toth'a't assumed byit whensuppoit 1 ing the door in partially closefdllp'osition; 18-In a-railvvay dump car'havinga'lading dischargefopening, the combination' 'with a;

hinged door for closing said openingi the door being movable" to open. position under the influence ofgravity; of a relatively: iinmovable member and a' pivoted member,'one:

of said memb'ers'being' mounted" on tllBfQZIP body and the other "on the door; the said'iin movable member'beingifashioned"with an ap erture ad a-centitsouter'endand saidpivoted member'havingfa portion adapt'edto extend through saidaperture to'support thedoor'in closed position, andimeans operativelyinter posed 'betvveen'the pivoted' member. and the its part up on which" it is mounted for-maintain; ing the pivoted member in an elevatedposi tion-to permita portion of -the immovable member forming apart oii tliefaperture'end' thereof to pass beneath said pivoted member thereby" enabling the "latter {to thereafter efi f tend throu-gh saidapert-ure. V 192- In -a";r-a'i1Way= dump car supporting the door in closed posit-ionim having a-lading'; discha e opening; the combination; with a" hinged door "fory closing said opening; "the door being movjable to open' position under the" influence "of gravity, of meolianismfor c 1 the member rigidly mounted on the car body PfQi hinged door for closing said opening, the

immovable member, one of said members be ing mounted on the car body and the other on the door, and means pivotally connected to said pivoted member and engageable with a relatively immovable part of the car for looking the pivoted member in door supporting position.

20. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the doorbeing movable to open position under the influence of gravity, ofmechanism for supporting the door in closed position involving a pivoted member and a relatively mmovable member, one of said members belng mounted on the door and the other on the car body, rigid means forming a pivotal sup{ port for said pivoted member, and cam means pivotally connected to the pivoted member and overlying the outer face thereof for engaging said rigid means to lock the pivoted member in door supporting position.

21. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the

door beingmovable to open position under the influence of gravity, of a plurality of members rigidly mounted onthe door and car body respectively, a member plvotally I connected to the member mounted on the car body and cooperable with the other of said members for supporting the door in closed position, and cam means pivotally connected to the pivoted member andengageable with for locking the pivoted member in door supporting position.

. 22'. In a railway dump car having a lading discharge opening, the comblnation with a door being movable to open position under the influence of gravity, of-a plurality of members rigidly mounted on the door and car body respectively, a member pivotally con nected to one of said members and cooperable with the other of'said members for support ing the door in partially closed and in fully closed position, and means pivotally mounted upon the pivotedmember and overlying the outer face thereof for supporting the pivoted member in a position corresponding to that assumed by it when supporting the door in partially closed position.

. 23. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing saidopening, the door being movable to open-position under the influence of gravity, of a plurality of members rigidly mounted onthe door andcar body respectively, a memberpivotally mount-I ed on the car body and .cooperable with the member mounted on the door forsupporting the door in partially closed and fully closed position, and means pivotally mounted on said pivoted member and engageable with the means being also engageable with the member I rigidly mounted on the car body for locking the pivoted member in fully closed position.

24. In a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the door being movable to open position under the influence of gravity, of an arm rigidly mounted on the door and having an apertured portion, a bracket rigidly mounted on the car body and having spaced apertured portions for receiving therebetween the apertured portion of the door arm, a member pivotally connected to said bracket and engageable with the apertured portions of the latter and the doorarm for supporting the door in closed position, and cam means pivotally connected to said member for locking the latter in door supporting position.

25. In a. railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the door being movable to open position under the influence of gravity, of an arm rigidly mounted on the door and having an apertured portion, a bracket rigidly mounted on the car body and having spaced apertured portions for receiving therebetween the apertured portion of the door arm,a member pivotally connected with the bracket and engageable with the apertured portions of the latter and of the door arm for supporting the'door in a plurality of positions of closure,

and means pivotally'mounted on the pivoted member for maintaining it in a position cor responding to that assumed by it when supporting the door in partially closed position and for locking the pivoted member in fully closed position.

26. In'a railway dump car having a lading discharge opening, the combination with a hinged door for closing said opening, the door being movable to open position under the influence of gravity, of an arm rigidly mounted on the door and having an apertured portion, a bracket rigidly mounted on the car body and having spaced apertured portions for receiving therebetween the apertured portion of the door arm, a member pivotally connected to said bracket and engageable with the apertured portions of the latter and the apertured portion of the door arm'for supporting the door in partially closed and fully closed position, said memher being movable into both positions of closure under the influence of gravity, and means pivotally connected to said pivoted member, said'means being engageable with the bracket for supporting the pivoted memher in "a position corresponding to that assumed by it when supporting the door in pan tially closed position and being engageable with the bracket for locking the pivoted member when supporting the door in fully closed position. r

27. A car door mechanism for the hopper of a railway car involving, in combination .with a door hingedly associated with the hopper, a plurality of brackets one of which is secured to thedoor and the other to the side of the hopper, a member movably mounted on one of said brackets and engageable with the other to support the door in closed position, and means movably carried by said member and engageable with the bracket upon which it is mounted for locking themember in door-supporting position. 28. A car door mechanism for the hopper of a railway car involving, in combination with a door hingedly associated with the hopper, an arm secured to the door and projecting beyond a side edge thereof,'a member movably mounted on the side of the hopper adapted to cooperate with the arm to support the door in closed position, and means movably carried by said member and engageable with a relatively immovable part of the car for locking the member in doorsupporting position. I

29. A car door mechanism for the hopper of a railway car involving, in combination with a door hingedly associated with the hopper, an arm secured to the door, a bracket secured to the side of the hopper, a member adapted to engage the arm to support the door in closed position, and means movably carried by said locking member and engageable with the said bracket for locking the member in door-supporting position.

30. A car door mechanism for the hopper of a railway car involving, in combination with a door hingedly associated with the hopper, an arm rigidly secured to the door, a bracket secured to the side of the hopper, a member movably mounted on the bracket and engageable with the arm to support the door in partially closed and in fully closed position, said member being movable into engagement with said arm under the influence of gravity, and means for maintaining the said member in a position corresponding to that assumed by the latter when supporting the door in partially closed position, said means being movable with and with respect to said member and being adapted to be operatively interposed between the latter and the said bracket. 7

31. Acar door mechanism for the hopper of a railway car involving, in combination member when the latter is supporting the door in fullyclosed position. i

32. A car door mechanism for the hopper of a railway car involving, in combination with a door hingedly associated with the hopper, an arm rigidlysecured to the door, a bracket secured to the side of the hopper, a member movably mounted on the bracket and engageable with the arm to support-the door in partially closed and in fully closed position, said. member being movable into engagement with the arm under the influence of gravity, and means movably mounted on said member and adapted to cooperate with said bracket for maintaining the member in a position corresponding to that assumed by the latter 'when supporting the with a door hingedly associated with the hopper, an arm rigidly secured to the door,

bracket secured to the side of the hopper,

a member movably mounted on the bracket and engageable with the arm for supporting

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