US1060356A - Dump-car. - Google Patents

Description

J. 0. NEI'KIRK. f

DUMP GAR.

APPLICATION FILED DEC. 23, 1969.

Patented Apr. 29, 1.913.

.2 SHEETSSHEET 1.

STATES PATENT OFFICE.

JOHN D. NEIKIBK, OI CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL DUI? CAB COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF a Duncan.

Specification of Letters Patent. 1 Ap lication and December as, 1909. Serial Ho. 535,355.

Patented Apr. 29, 1913.

To all zizfiom it may concern;

Be it'known that I, JOHN O. Nummn, a citizen of. the United States, residing at ,C'hicago, in the county of Cook and State of Illinois,v have invented certain new and usevful Improvements in Dump-Cars, ofwhich the following is a specification.

The object of my invention is to improve i the construction ofv cars of the National type in. which dum doors are operated by a reciprocable sha t which moves transversely of the hinge axis of the doors. Cars of this type are illustrated in reissuedLeters Patent 12 447, granted to W. A. Gaswell February 6, 1906, and in the patent to Otis 858,013,-granted June 25, 1907. This.

type of caris familiar to those conversant with the railway art, and a detailed description thereof is therefore unnecessary..

. I have illustrated my invention as ap plied to a car in which the door supporting means is given its transverse movement by the engagement of gears thereon with racks upon a stationary part of the car underframe. The broad principle of the invention, however, might be applied to cars in which the door supports are given their transverse movement by other means.

In the drawingsFigure 1 is a side eleva tion of one end of a car to which my 'inven tion is a plied. Fig. 2 is a' fragmentary view partially in end elevation and partially insection. ig. 3 is a detail sectional elevation showing the relation of the door supporting means to one of the Intermediate J cross members. Fig. 4 is a view similar to 3 showing the parts adjacent the mid- The car to which my invention is applied comprises an underframe of any suitable design comprising a cepter Slll 8 and an end sill and cross members 6, 5 and 7. Hinged.

adjacent the center of the car and at each side thereof are a series of dump doors 9,

these being shown in the present instance as hinged to brackets 10 secured to the cen ter sill adjacent the top thereof. Ordinarily there will be 8 such doors upon each side of the car, one between each bolster and end sill, and the remainder between the bolsters. The openings in which these doors operate are framed by the center s1ll,' the cross members and the car side, and half of each side of the car a shaft 12 projects inwardly to the middle of the car through said slots from a point outside of the end' sill 6. It has been customary in cars of this type to provide means for moving this;

shaft transversely of thecar in the slots mentioned and to carry the doors and the load thereon directly upon said shaft. In my improved car, however, I relieve the shaft 12 of the larger part of the weight of the doors andsuper-imposed load and carry the doors and load upon door supports or rollers designated generally by the "reference numerals 2 in Fig. 1 of the drawing.

Referring to Fig. 3, the door support 2 comprises a sleeve having a non-circular longitudinal opening, in the present instance hexagonahwhich opening is non-rov tatably engaged by the shaft 12' which is also of hexagonal form. The sleeve which constitutes the main body of the door sup port 2 carries a gear wheel 13, preferably formed integral therewith, and also a circular shoulder 14. Between the gear wheel 13 and the shoulder 14 is an annular groove 15 which en ages and rests upon thecross member 7 o the underframe; The doors 9 rest upon the sleeve 'forming the main body of the door support 2, the doors in the presentinstance being provided with angle ir'ons 15' fixed to the under side thereof adjacent 95 their edges, the lower flanges of which angle irons contact directly with the door supporting member 2. The crossmember 7 is provided with a series of teeth 16, similar to those upon the cross member 5 illustrated in 100 Fig. 2. These teeth project from the side of a reinforcing plate 17 which is riveted alon the lower edge of the slot 11 in the memier 7 and form a rack. The door support 2 rests upon the reinforcing member 105 17, which as. shown in the drawings, proects over the lower edge of the slot 11 in the member 7, and the rack formed of the teeth 16 meshes with the gear 13 upon the member 2.

It will be apparent that when the Shaft 12 i s'rotatedby any suitable means at the end of the car such; rotation will be 'imparted'to the door support 2 and'through the coactlon of the gear 13 withtheteeth 16 transversemove-ment will be impartedto both the shaft and the door support 2.

The weight of the doors and load in'this con struction rests directly upon the 'doo-r support 2 and is transmitted, therefrom to the cross member 7 thus relieving the shaft 12 ,fromthe weight of the load, exce ';)t such small part thereof as may be transmitted to' the shaft by reason of the force acting upon the opposite ends OI the sleeve 2 not 'being T precisely equal. To all intents and purposes, However, the shaft 12 in the construction described serves the functionmerely of. lmparting rotation to the door supports 2 and is relieved. ofthe load resting upon the doors. V r In Fig. 4 I have illustrated the construction atthe center of the car where the shafts leading from the opposite ends meet. The

door support 2shown.at the right of this view coacts with mechanism upon the vcross member 5 similar to that described in con nection with the structure shown in Fig.3.

llhe door supp'ort'2' at the left of Fig. 4 is carried upon a rail 17 bracketed uponthe "cross memberrfi andcarrying rack teeth 16,

which'coacvwith gear 13. In the construction illustrated in Fig. l the rail 17 is formed integrally with a bracket 18 which is riveted-to thecross member 5.. Between the ends of the shafts 12'leading from opposite ends of the car is aplate 19 formed asillustrated 'and riveted to the cross member 5 above thevslot 11 therein, the member 19 serving to'limit endwise movement of the shafts 12. w

In Fig. 5 I have illustrated the, construction at the'end ofthe car. This construc- ,tiontis similar to' that already described ex cept that the shoulder 14 is omitted, and upon the shaft 12 beyond the end sill ratchet wheels -20+'21 are non-rotatably. mounted.

' One of the valuable features. of my improved structure lies in the fact that the gears 13 and rack teeth 16 are held in mesh by the engagement of the grooves-15 with the-cross members. In case the cross mem- .gitudinally' of the "car "when subjected to some unusual strain the door supports with their gears will be carried with 'the cross tween the gears and the rack: teeth. i

that I have provided a ear of the INational} type in which the reciprocable o to the actual door'su'pporting members.

carrying out this idea it W1 be apparent that the principle canbe embodied infother 'forms of'mechanism. g

I claim:.

resting upon said'cros s membel y'anda sup.-

the adj acent serls.

derframe comprising a cross-member, dump doors at either-side of said crossmember, .rotatable and reciprocable supports fo'r sald tably engaging said supports, and a single means bracketed to said cross member or limiting the endwise movement of Isaid shafts. r

3. In a carvof the class described, an 11n- G. A. MGHUGH.

members thus retaining the engagement be-y' It'w'ill'be. apparent from the. foregoing crating shaft is relieved of the weight oft e doors and load and is required to perform: merely the service of transmitting rotation While I have described -a -splecific mode of that my invention is not limited thereto and 1. In a car of-the class describedyan .un-j derframe comprising a cross member, sepm rate series of dump doors at either .side Of said cross member, rotatable and reciprocable door supports for said'doors, onej-of said door supports under one 9f said series derframe, dump doors, rotatable and re'cipbers orany of them become displaced lonporting rail bracketed to said. cross member for carrying the other ofsaid supportsb1280 2.. In a car. of the class described, an un- I doors, separate operating shafts 'n'on-rota-v

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