US1406274A

US1406274A - Dump car

Info

Publication number: US1406274A
Application number: US273116A
Authority: US
Inventors: Walter P Murphy
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-01-25
Filing date: 1919-01-25
Publication date: 1922-02-14
Anticipated expiration: 1939-02-14

Description

W. P. MURPHY.

DUMP CAR.

APPLICATION FILED 1AN.25. 1919.

4 SHEETS-smul.

w. P. MURPHY. DUMP CAR.

APPLCATIGN FILED 1AN.25, 19H);

Lsfm y mmm M M? 4 SHEETS-SHEET 2.

W. P. MURPHY.

DUMP CAR.

APPLICATION HLED 1,\N.25,19x9.

4 SHEETS-SHEET 3:

W. F MURPHY,

DUN? CAR.

APPLICATIN FiLEl )A7-6.25.1919.

(gygygggjs Patented Een 3.4, i922,

4 SHEETS-SMH 4D filo TATES v (gam lli lli didi Wennen 12. Menen-r, os new wenn;

PATENT OFFICE..

DUMP CAR.

Application filed January 25, i919. Serial No. 273,l16.

T0 aZZ 'whom t may concern :Se it known that Wei/rer. P. MURPHY, a citizen of the. United States, residing at New 'Yoi'k'city, in the coiiiitj.v oiP New York and State of Kew York. have invented certain new and useful improvements in Dump iger-s, of which the `following is a specilication.

My invention relates to railway dump cars.. and particularly to the construction. of 'the doors or hinged bottoni panels in cars of this type; and the primary object of the invention is to provide a door or bottoin panel which will be. very strong and rigid so that it will noty sag` under thc load or become bent oii warped, ander the stresses to which it is subjected and which, inoieovci', will present a smooth and unobstructed surface incontact with the cargo over which the cargo will readily slide when it is dumped. Considerable difficulty has been experienced .in carsot' this type due to the sagging. warping and bending ot the bottoni doors, which as will be readily understood, are subjected to very heavy pressures from the bulk inaterial with which these cars are loaded. and are liable to other strains when manipulated due. to clogging of the parts with ice or other substances. Riny warping of the hinged bottoni doors or panels is likely to interfere with the proper manipulation oi the dumpinginechenisin oi the car besides makingr the car leaky. lt has been customar)v fito reinforce these doors with angle barsri'veted to the under side thei'eoil but this expedient has not proved altogether satisaciory, so far as giving the requisite strength and rigidity. illoreover, any suoli reinforcement adds to the weight of the doors besidesnialzing the upper surfaces ot' the doors rongh. Vln order that the cargo oi j nilveriilent. material` such sand or, coal in' that state, should ibe readily discharged, the upper surfaces of the. doors ought be as smooth as possible so that the load will readily slide over the saine when the doors are let, down. it the doors are studded 'with rivets cargo oi? this sort will oit/en clog; particularly if rnoist. My inveir tion provides a bottom door for a dump car which /av'oids these objections and :it the saine 'time is strong; and sutliciently rigid to all requirements. The door, hown ever, has e certain elasticity or .flexibility which given the structure capacity -tolspring to its original shape when su jected i 1 or diiiei'ent design and construction. l have i shown in the drawings annexed hereto. and will describe in the following' speciication two well known types of railroad dunip carsfiirnislied with the hinged dumping doors constructed in. accordance with the "princi ples of iny invention, with the'iinderstzinding. however, that these embodiments oi the invention ere merely...i11nstrative l ln the drawings, 4

Fig. l. is a-,ftragmentary plan view o one of the illustrative embodiments of inv invention just referred to. n

Fig. 2 is a sectional `view on line 2-2 oi. Fig. l.

Fig. 3 is a plan View of the sheet motel panel forming one of the doors of the car shown ,in 'the preceding two'iigures.

Vig. l is a sectional view on line fl-- of Fig'. 3.

Fig. 5 is a fragmentary sectional view on line 5-5 oflig. el. f

Fig. 6 is a fragmentary longitudinal sectional View of the other illustrative einhodinient `of the invention.

Fig. 'T isv .a fragmentary plan view or" the saine.

Fig. 8 is a. vertical sectional view on line s s of Fig. t.

Fig. 9 is a plan view, scale, of one pair of doors.

l() .is a sectional view on line :iO-l0 of Fig. 8, and

Fig. ll is a view, in perspective, of one corner of the door panel.

on an enlarged Like'charecters of reference designate 'like 'parts in the several igures of the drawings.

Referring First to Figs. 1 to 5 inclusive, indicates the center sill ot the cer., I26 one oi the holsters, 27, Q? the side walls, 28, 223 the end valle, E29 the outside side wall stakes, and 30 the interior stakes which engage the bolster.

it will1 notJ be necessary to describe in detail 'the general structure of the car as my" invention is confined to the construction and arrangement of the bottom'dOOrs.

Each door consists of a sheet of metel 3l which, in the type of car under considerav tion, is hinged to the center sills by hinges 32. Chains 33 engage brackets 34 on the antler edges of the doors. These chainsI form part of the dumping mechanism which is manipulated to drop or raise the doors.

The panel 31 is formed with a plurality of substantially parallel. corrugations 35 which arexpreferably upwardly pressed from the sheet and which terminate Within the edges of the sheet so as to leave flat margins 36. lhe corrngations extend transversely of the car7 that is to say, in the direction in which the cargo moves when it is dumped. These corrngations merge one into the other so that the panel has a sinuons configuration in cross section This conlignration gives the panel very considerable strength. The corrngations act as'beams to transmit the stresses exerted against it by the cargo from one edge of the panel' to Ithe other. Each corrngation rigidies the other due to the merging oi one into the other so that if the pressure on one corrugation is greater than on anotheijthere will be a disposition of stresses from one corrugation to another which aids in preventing undue deflection.

y Moreover, the sinuous configuration of the il il panel givesit a certain increased elasticity whereby it will tend to resume its original sha-pe iftlie force is such that some deflection is unavoidable The edges of the panel are provided with a rigidiying element consist` ing preferably of an integral downturned 'lange 37 which preferably extends continuously around all four edges of the sheet. ri`lie portions of this flange along the edges parallel with 'the corrngations are preferably given a truss-shape, as indicated at These are the unsupported edges of the door and consequent-ly require more reinforcement than the other edges which are engaged by v the hinges or chains. The truss-like flanges cooperate with the corrngations to give a panel the required strength and stiffness on lines transverse of the car. lt is along these lines that deflection under the load is likely to occnr.

l modit'ied construction to suit a somewhat different type oi: car is shown in Figs. (3 to li, inclusive. in this type of car the doors are hinged on' lines running rrosswise of the car instead of lengthwise thereof and operate in sets of'fonr. The side walls of car Show-n at 3f) and the lix'ed slopingr bottom sheet at one end of the car is indicated by numeral 4l), il structure 41er:- tends the length ot the car presentingin plan two somewhat sloping surfaces 42, 42. this structure forming. in effect, a part of the center sill of the car. Transvcrsely of the car aty intervals are fixed structures 455 having approximately' an inverted V-'shape in cross section. They entend. in each case, from the side walls of the car to the longitndinal structure 42. The hopp'fh formed by the side walls of the car, the longitudinal structure 4l, the lined bottom sheet 40 and the transverse structure 43 are closed at the bottom, in each case, by a pair of doors 44, v45, the former being hinged at 46 to one of the transversevstrnctures 43 and the latter being hinged at 47 tothe fixed bottom sheet 40. wEach of these doors consists of a sheet metal anel formed with corrugations 46 extending transversely thereof, that is, longitudinally with `respect to the-car. These panels are formed, except on their meeting edges, with downturned flanges 48, 49, these flanges bein rigidly united by corner angles 50. Secure( to the under sideo the meeting edges of the panels are angle bars 5l which extend under the longitudinal structure 41 and are connected with the correspending edges of the aligning doors on the other side of the car. The flanges 48 are preferably secured to the angle bars 51 by members 52. The mechanism for operating the doors is engaged with .the angle bars 51, the chains forming part of this mechanism being indicated in dotted lines at '53 (Fig. 6). This mechanism forms no part of my invention and need not be described.

I claim:

l. In a railway dump car, the combination with the body of the car, of a hinged door forming part of the bottom of the car andv adapted to assume an inclined position for dumping, comprisingr a' sheet steel panel formed with rigidil'ying means at its edges and with corrugations which are pressed upwardly from the plane of the panel and extend in the direction of movement of the cargo when dumped.

2. In a railway dump car, the combination with the body of the car, ofra hinged door 'forming part. of the bottom of the car and adapted to assume an inclined position for dumping, comprising a sheet steel panel formed with rigidifying means at its edges land with a plurality of parallel corrugations which are pressed upwardly from the plane Y or' the panel and terminate within the edges of said sheet and extend in the ydirection of movement ot' the cargo when dumped.

3l In a railwa dump car, the combination with the body o the car, of a hinged door formingpart of the bottom of the car and adapted to assume an inclinedposition for dumping, comprising a sheet steel` panelformed with rigiditying means at its edges and with corrugations which terminate with` in the edges of the sheet, project upwardly.

from the plane of the margins of the sheet, and extend in the direction of movement of the cargo when dumped.

4. In a railway dump car, the combination with the body of the car, of a hinged door forming part of the bottom of the oar and adapted to assume an inclined position for dumping, comprising a sheet steel panel formed with downturned rigidifying flanges at its edges and with corrugations forming parallel furrows above the plane of the sheet which extend in the direction of movement of the cargo when dumped.

5. ln a railway dumpcar, the combination with the body of the car, of a hinged door forming part of the bottom of the car and adapted to assume an inclined position for dumping, comprising a sheet steel panel formed with an integral, continuous, downturned rigidifying flange around its edges and with up pressed corrugations which provide parallellfurrows above the plane of the sheet and. extend in the direction of vmovement of the cargo when'dumped.

7. ln a railway dump car, the combination with the body ot the car, of a hinged door# forming part of the bottom of the car and adapted to assume an inclined position for dumping, comprising a sheet steel panel. formed with an integral, continuous, down- 'turned rigidifying `Hange around its edges and with parallel corrugations which extend in the direction of movement of tlie cargo when dumped, terminate within the edges of the sheet and project upwardly from the plane of the margins of the panel.

8. In a. railway dump oar, the combination with thebodly of the car, of a hinged door forming part of the bottom of the car and adapted to assume an inclined position for dumping, comprising a sheet steel panel lormednwith downturned rigidifying ianges at its edges and with a plurality of corrugations which terminate within the edges of the sheet, project upwardly from the Plane of the margins of the panel and extend in the direction of the movement of the cargo when dumped.

9. In a railway dump ear, the combination with the body of the car, of a hinged door forming part of the bottoni of the car and adapted to assume an inclined position for dumping, comprising'r a sheet steel panel formed with corrugations which entend in the direction of movement of the cargo when dumped and with downturned flanges, wider at the middle than at the ends, along the edges arallel to said corrugations.

10. n combination with the body of a railway dump car, of a door, means 'for hing; ing the door to the bottom oi the car body, means for supporting the edge of the door opposite the hinges when the door isclosed;

the door comprising a sheet metal panelv Jformed with corrugations which extend sub stantially from the hinged edge of the` door to said opposite edge, and provided with4 means constituting a unitary rigidifying ele ment extending around the edges ot the door to the bottom thereof.

11. A hinged door for a railway dump car comprising a sheet metal panel provided on the outside with rigidifying means extending around its edgesv and formed with corrugations which project inwardly of the car, pro vidinor furrows above the plane of said panel and lie in the direction of movement of the cargo when dumped.

l2. A hinged door for a railway dump car compiising a sheet metal panel formed with outturned rigidifying flanges at its edges vand with corrugations which termina-te within the edges of the panel, project inwardly of the car so as to provide furrows above the pla-ne of said panel and lie in the direction of movement of the cargo when dumped.

' 13. A hinged door for a railway dump car,

comprising a sheet metal panel formed with outtnrned rigidifying flanges united at the corners of the panel to provide a continuous, rigidifying element around the same, said panel being formed with corrugations which terminate within the sheet and merge one into the other so that the panel has a sinuous configuration in cross section..

WALTER PfMURPHY.