809,643. June 9, le A. E. SMALL RAILWAY CAR DROP DOOR

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1 June 9, A. E. SMALL RAILWAY CAR DROP DOOR 809,643 Filed April 25, Sheets-Sheet 1 /1 le e.

2 w June 9, A. E. SMALL Railway, CAR DROP DOOR Filed April 25, Sheets-Sheet 2 SL-L-L- 72 Zaze/ezzfor Ath uraesmall 4tzitzizé 7taines

3 June 9, A. E. SMALL RAILWAY CAR DROP DOOR Filed April 25, Sheets-Sheet 3 4zzazee, 29S

4 Patented June 9, it 5 UNITED STATES PATENT office ARTHUR E. SMALL, OF CHICAGO, ILLINOIs, AsSIGNOR. To UNION METAL PRODUCTs COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE RAILWAY CAR DROP DooR Application filed April 25, serial No. 358,008. The invention relates to railway cars of the dumping type but more specifically to the so 10 is section online of Fig. 9; Fig. called general service' gondola cars where 11 is a section on line of Fig. 9; in the floor consists of a plurality of doors, Figs. 12, 13 and 14 are illustrative dia grams. which doors usually have one end hinged to the center construction of the car and the In the drawings, the usual parts of the car other end supported by the side wall of the are shown, such as center sills or center con car when the door is in closed position. struction 1 cover plate 2; cross diaphragms Such doors are usually each provided with a 3, side Wall 4; operating shaft 5; raising chain 6 and stop 7. - plurality of hinge elements and support ele inents, and I provide a beam element between The door is provided with hinge elements each hinge element and its opposite support 10 adjacent one end thereof which engage the ing element. When two hinges are used to hinges 11 mounted on the center construction each door each of such beams supports Sub 1. The door is also provided with support stantially 50% of the load imposed upon the elements 12 adjacent the other end of the door door and where three hinge elements are used to which the raising chain 6 is secured. The each beam supports substantially one-third term Support elements' means any means of the load imposed upon the door. adjacent the outer end of the door which Such cars are provided with stops adja rests upon a part of the car proper to support cent the sides of the door opening to restrict the door when it is in closed position. The the downward movement of the door and the door is further provided with a rib or beam door is provided with bumpers to engage element 13 extending between each of the these stops. The stops are usually spaced to hinge elements 10 and the opposite support divide the length of the door into thirds ac elements 12. The bumpers 14 are prefer cording to known mechanical principles. I ably positioned adjacent the opposite sides of provide a beam element extending between the door and another rib or beam element 15 the bumpers on the door which is substan substantially normal to the first mentioned tially normal to the beam element extending rib or beam element is provided which ex between the hinge and supporting elements. tends between said bumpers. When the door is dropped the load follows I also preferably provide brackets 36 ex the door and at the moment of impact of the tending from the ribs toward the corners of bumpers with the stops, this beam element the door to prevent the drooping of these carries substantially two-thirds of the load corners and reinforcing ribs 37 between the imposed upon the door. (See Fig.2). hinge elements and reinforcing ribs 38 be-, tween the support elements... The object of this invention is to provide a hinged door for a railway car, which door As the ribs forming the beam element be is reinforced by beam elements which func tween the bumpers must support a greater tion when the door is in closed position and load than the other beam elements they are another beam element which functions when tively preferably stronger. deeper so as to make them rela the door is in open position. Another object of the invention is to secure co-operation be The different beam elements cross each oth tween these different beam elements whereby cer and are so formed as to prevent either one each beam element reinforces each other of them from deflecting under stress, thereby co-operating to strengthen each of them.. beam element. In the drawings: - Figs. 1, 2 and 3 show a typical applicatio of my invention to a railway car, Figs. 4 to 8 inclusive show a form of the door in detail. Fig. 9 shows a modified construction: Fig. I prefer to make the door of cast metal wherein it is easier to distribute the metal in C the door according to the stress imposed upon the various parts and a casting also eliminates fabrication and assembling of the various parts, and furthermore, assures that the va. rious parts of the door will remain intact and 3 5 O O 80 in

5 O will not be loosened or severed by the motion hinge elements and the opposite support ele of the train in service. The invention, how ments, and a deeper rib substantially normal ever, is not limited to a cast metal door and to the first mentioned ribs extending between Figs. 9, 10 and 11 show a construction where said bumpers. in the body of the door is made of a rolled 4. A door for a railway dump car having metallic plate having a beam element 50, hinge elements, support elements, and bump shown as a T section extending between the ers, said door provided with a beam element hinge elements 51 and the support elements extending from the hinge elements to the sup 52. The beam element 50 is preferably at porting elements, respectively, and another tached to a flange 53 adjacent each end of the beam element substantially normal to the first '. door. The door is also provided with a strap mentioned beam element extending between 54 which is secured to flanges 55 at the side said bumpers. margins of the door. When the door is in 5. In a railway car having a door open open position it rests upon the end portions ing, hinge butts adjacent one end thereof, of the strap 56 which forms the bumpers and door supports adjacent the other end there the strap in combination with the beam ele of, a door stop adjacent each side thereof, ments (forming struts) forms a truss between and a door having hinge elements engaging the bumpers. The metallic plate may be re Said hinge butts, support elements engag inforced with corrugations 57. ing said supports when the door is in closed Figs. 12, 13 and 14 are diagrams wherein position, and bumper's positionel to engage Fig. 12 shows the beam elements a extent said stops when the door is in open position, ing between the hinge elements l' and sup said door provided with a bean element ex ports c and the other beam elements d tending from the hinge elements to the sup extending between the opposite bumpers e'. porting elements, respectively, and another ; The shaded portion in Fig. 13 shows the area beam element substantially norinal to the of the load supported by one of the beam ele first mentioned bean element extending be ments 'a' which is one-half of the load. The tween said bumpers. shaded portion in Fig. 14 shows the area of 6. A door for a railway car comprising the load supported by the beam d' which is hinge elements adjacent one end thereof, sup about two-thirds of the load, thus the beam port elements adjacent the other end thereof, d' should be one-third stronger than the bumper's adjacent the opposite sides there beam a. of, a reinforcing rib extending between said The accompanying drawings illustrate the hinge elements, another reinforcing rib ex preferred form of the invention, though it is tending between said support elements, a rib to be understood that the invention is not extending between each of the hinge ele limited to the exact details of construction ments and the opposite support elements, shown and described, as it is obvious that brackets extending from said ribs toward the various modifications thereof within the scope corners of the door, and another rib sub of the claims will occur to persons skilled in stantially normal to the first mentioned ribs the art. extending between said bumpers. I claim: 7. In railway car having a door open 1. A door for a railway dump car compris ing and a door therefor, the combination of ing hinge elements adjacent one end there. hinge members adjacent one end of the open of, support elements adjacent the other end sing, support members adjacent the opposite thereof, bumpers adjacent the opposite sides end of the opening to support the door in thereof, a rib extending between each of the closed position, and door stops on the oppo hinge elements and the opposite support ele site sides of the opening to support the door ments, and another rib substantially normal in open position, said door provided with a to the first mentioned ribs extending between rib extending between each hinge member said bumpers. and the opposite support member, and an 2. A door for a railway dump car compris other rib extending between the portions of ing hinge elements adjacent one end there the door which engage said stops. of, support elements adjacent the other end ARTHUR E. SMALL. thereof, bumpers adjacent the opposite sides thereof, a rib extending between each of the hinge elements and the opposite support ele ments, brackets extending from said ribs to ward the corners of the door, and another rib substantially normal to the first mentioned 60 ribs extending between said bumpers. 3. A door for a railway dump car compris ing hinge elements adjacent one end there of, support elements adjacent the other end thereof, bumpers adjacent the opposite sides 65 thereof, a'rib extending between each of the