US2131420A

US2131420A - Mine car

Info

Publication number: US2131420A
Application number: US52768A
Authority: US
Inventors: Warren V Johnson
Original assignee: American Car and Foundry Co
Current assignee: ACF Industries Inc
Priority date: 1935-12-04
Filing date: 1935-12-04
Publication date: 1938-09-27
Anticipated expiration: 1955-09-27

Description

Sept 27, 1938,- w. v.'JoHNsoN 2,131,420

MINE CAR Filed Dec. 4, 1955 4 Sheets-Sheet 1 h/ar Sept. 27, 1938.' w -V JQHNSON I 2,131,420

' MINE CAR Filed Dec. 4, 1935 4 Sheets-Sheet 3 ATTORNEY Sept. 27,l 1938. w. v. JoHNsoN MINE CAR Filed Das. 4, 1935 4 Sheets-Sheet 4 Patented Sept. 27, 1938 American Car and Foundry Company,A New York, N.l Y., a corporation of New Jersey Application December 4, 1935, serial No. 52,768

15 Claims.

This invention relates to mine cars in general and in particular to steel mine cars of the light weight low bottom type.

Mine cars as previously built have been of two general types, namely, the composite car and the all-metal car, but in each case the car was made with heavy members forming an underframe or its equivalent upon which the car iioor and car superstructure was supported. This type of construction was costly and wasteful of material and becomes increasingly objectionable as the length of haul or height of hoist increases. It is an object of this invention, therefore, to provide a metal car which is light and strong and in which the metal is distributed to the best advantage.

Another object of the invention is the provision of a car in which the usual massive sills are eliminated. n

Another object of the invention is the provision of a new and improved method of constructing mine cars.

Yet another object of the invention is the provision of a car in which the entire oor and longitudinal strength members are formed from a single deformed plate.

A further object of the invention is the provision of a car having a new and improved spring end construction.

A still further object of the invention is the provision of a low-bottom car in which the customary massive traction-truck is eliminated.

These and other objects will be apparent to one` skilled in the art from a study of the following description and appended drawings in which:

Figure 1 is a side elevation of one-half of the car;

Fig. 2 is a side elevation of the other half of the car and together with Fig. 1 shows the entire car;

Fig. 3 and Fig. 4 are plan views of the car shown in Figs. 1 and 2 respectively and when taken Atogether show the entire plan of one-half the car;

Fig. 5 is an end elevational view with parts of the floor broken away to better disclose the construction; 1 Y

Fig. 6 is a plan view partly in section of the improved end construction;

Fig. 7 is a sectional view on line .'I-I of Fig. 6 and shows the bumper construction;

Fig. 8 is a sectional view on line 8-8 of. Fig. 6

and shows the relation of the'draw -memberiand' end member, and

(Cl. 10E-364) unit with the end member at the left side removed. n

Referring now to the drawings in detail, the ca r is shown as of the end dump type, butv this is merely representative since, if a rotary dump A5 car is desired, the two ends of the frame will be made alike. The car comprises underframe unit A, bumper B, coupler'member C, end gate D, side walls E and pedestal forming member F,

The combined floor and base frame or underirame member is formed of a single sheet of metal which may be pressed but is preferablyso designed as to be shaped in a break, thus eliminating expensive dies. The flat sheet I has portions cut out as at 2 at each end, while one or both ends has an additional portion cut out as at 4 in case the car is to be of the end dump type. After cutting out the necessary portions the sheet I is bent upwardly to provide side portions 6, then outwardly to provide ygunwales or side floor por- 20 tions 8 and while in this position iianges II) are formed, then the sheet is bent as'at I2 to bring the entire unit to the form shown in Fig. 9 wherein the flanges I0 and gunwales 8 are substantially parallel and the outer side portionsV I4 are 5y substantially at right angles thereto. It is thus seen that a one piece underframe member is formed having substantially box section side portions with two sides of the boX section serving as lading retaining portions. l 30 End sill I6 is formed with web I8 and outwardly directed top and bottom flanges I9 and 20 respectively and is of the proper length to lit between and be overlapped by the side portions I4. The end sill is also of such thickness as to rest upon the flanges I0 and central ioor portion at the bottom and contact with the gunwales at the top. The end sill web abuts against the side portions 6 to which it is welded as well as to the outer side portions I4, while the gunwales, central floor and flanges IIJ are securely welded to the end sill anges.

The bumper pockets are formed by welding spaced

plates

22, 23, 24 and 25 to the web and anges at either end of the end sill and inserting pressed channels suitably welded in place and having webs 26, lower. flanges 2l, and upper iianges 28. The bumper'B is formed with curved front face 30, lrearwardly directed top and bottom flanges 3l and 32 respectively, between which is inserted spaced

plates

33 and 34 suitably welded in place and so positionedas to form vwith the pressed channels a pocket to receive bumper springs S. The top and bottom anges of the bumper have openings 35 punched therein to receive ilat keys 36 against which the outer end of the springs may bear. These keys pass through elongated slots 38 in the top and

bottom flanges

28 and 27 respectively of the bumper pocket channels and are held in place by means of a curved portion 31 and cotter pin 39.

The coupler member C is formed of a piece of bar metal 40 of substantially the same length as the end sill and against which it normally rests, being held there by the rear end of the bumper springs. rIfhe bar is mounted and guided for outward movement in elongated slots 42 punched in the various vertical plates forming the bumper and bumper pocket and is provided at its center with a band 44 by which the car may be coupled to other cars. In order that the bar may be inf serted and removed readily from the car a slot 45 is punched in at least one of the side portions I4. It is thus seen that an extremely strong yet light end construction is formed that provides spring cushioned bumpers and draft gear.V

The end construction at both ends of the frame are exactly similar whether the car be for a rotary or end dump type and this is done not only to provide a better car but to permit of more rapid production. In case the car is to be used for end dumping a portion, as previously stated, is removed as at 4 and the removed piece of metal is turned sidewise and pressed to form a channel-shaped reenforcing member 48 which is secured to the central iioor portion and lower ilange of the end sill. A deformed Z-shaped delector, having a lower flange 50 secured to the car oor, an inclined web 5| and a top flange 52 secured to the top flange of the end sill is provided and has its side edges conforming and welded to the car underframe as clearly shown in Figs. 4 and 9. A triangular-shaped pressing 53 may be provided whichis secured to the reenforcing member 48 and deflector plate to support the latter.

Extending between side portions 6 and I4 of the underframe member and suitably secured thereto and to side floor portion 8 and flange I0, are plates 54 which not only serve to stiffen the construction but also retain said side portions, flange and side oor in denite fixed relation. The plates 54 are arranged intermediate the end portions of the under frame, as can be seen in Figs. 1 and 2, and as many plates as are required may obviously be employed. Above the points of body support, the side portion I4, side floor 8 and ange III are connected the plates 56 (see Fig. 5) which serve to retain the portion I4, side floor 8 and flange I0 in fixed relation and also prevent deformation of the unit. If it is desired, or necessary, reenforcing bars 58 may be welded to the central floor portion in order to prevent sagging thereof, although ordinarily they will not be needed.

In a rigid mounted car the axle boxes may be attached directly to the flange I9, or if a lower type of car is desired, the axles may extend through the portions 6 and I4; however, in the present case, which is purely illustrative, the car has been mounted on springs. In order to provide suitable pedestals pressed members 60, 6I and 62 are secured to the ange I I] at the proper positions and have their lower surfaces in a plane to receive the pedestal tie bar 64. Journal boxes B6, having the customary ears and wearing pressed plates and provide a mounting for the axle 68 and springs 'IIL The wheels W are housed within the semi-box surfaces, are engaged between thev section sides of the underframe unit and these sides, being open as they are, serve admirably to protect the brake rigging which is of conventional form. The brake shoes 12 are carried by hangers 14 suspended from brackets I6 secured to the underside of the gunwale or side iioor portion, while the brake operating rod 'I8 and portions of the brake operating mechanism 80 are also carried in the semi-box section underframe sides.

The car is completed by addition of the side walls which overlap and are secured to the outer side portions and the end walls, one or both of which may be fixed or swinging as desired. In the case of the fixed wall the side edges and lower edge are flanged to connect to the side walls and end construction respectively.

It is thus seen that an extremely light yet strong car is providedv which is easy to build and lends itself readily to modern shop methods of construction. It is believed that the advantages of a car constructed according tothe present illustrative description is obvious as is also the fact that various improvements, rearrangements and modifications thereof may be made without departing from the scope of the appended claims.

What is claimed is:

1. A one piece underframe unit for mine cars comprising a central floor portion, inner side portions extending upwardly from said 'central floor portion, side iioor portions extending outwardly from said inner side portions, and outer side portions depending from said side floor portions and each having a stiffening ilange at its lower edge substantially in alignment with the central floor portion.

2. A one piece underframe unit for mine cars comprising, a central oor portion, inner side portions extending upwardly from said central floor portion, side floor portions extending outwardly from said inner side portions, and outer side portions depending from said side floor portions and each having an inwardly directed stiffening ange at its lower edge said inner and outer side portions being of substantially equal depth.

3. A one piece underframe unitfor mine cars comprising, a central oor portion, inner side portions extending upwardly from said central iioor portion, side oor portions extending outwardly from said inner side portions, and outer side portions depending from said side oor portions and each having an inwardly directed stifening flange at its lower edge substantially in the plane of the central floor portion.

4. A one piece underfrarne unit for mine cars comprising, a central floor portion, inner side portions extending upwardly from said central floor portion, side floor portions extending outwardly from said inner side portions, and outer side portions depending from said side floor portions and each having an inwardly directed stiilening flange at its lower edge substantially in the plane of the central floor portion to thereby form substantially box section side members.

5. A one piece Yunderframe unit for mine cars comprising, a central iioor portion, inner side portions extending upwardly from said central floor portion, side iloor portions extending outwardly from said inner side portions, and outer side portions depending from said side oor portions and each having an inwardly directed stiiening iiange at its lower edge, and means for retaining the inner and outer side portions and side floor portion in fixed position relative to each other, comprising rigid elementslocated Vintermediate the 75":

end portions of the underframe unit and extending between the inner and outer side portions and connected thereto and to said side floor portions.

6. An underframe unit for mine cars comprising, a central floor portion, inner side portions extending upwardly from said central floor portion, side oor portions extending outwardly from said inner side portions, and outer side portions depending from said side oor portions and each having an inwardly directed stiffening ange at its lower edge, means for retaining said side floor portions, inner and outer side portions and anges in definite relation relative to each other comprising rigid elements located intermediate the end portions of the unit, certain of said elements extending between the inner and outer side portions and being connected thereto and to the side oor portions and anges and other of said elements extending between the iianges and side oor portions and being connected thereto and to the outer side portions, and end sills to which the unit is secured at its opposite end portions.

7. A one piece underframe unit for mine cars comprising, a central floor portion, inner side portions extending upwardly from said central floor portion, side iioor portions extending outwardly from said inner side portions, and outer side portions depending from said side oor portions and each having an inwardly directed stiffening flange at its lower edge, said inner side portions having a part thereof removed inwardly of the ends of the side and central oor portions and adjacent at least one end to provide a recess for an end sill.

8. A one piece underirame unit for mine cars comprising, a central oor portion, inner side portions extending upwardly from said central oor portion, side floor portions extending outwardly from said inner side portions, and outer side portions depending from said side floor portions and each having an inwardly directed stiffening flange at its lower edge, said inner side portions having a part thereof removed adjacent each end whereby said inner side portions terminate inwardly of the ends of the side and central floor portions to provide recesses for end sills.

9. A one piece underframe unit for mine cars comprising, a central floor portion, inner side portions extending upwardly from said central oor portion, side floor portions extending outwardly from said inner side portions, and outer side portions depending from said side floor portions and each having an inwardly directed stiffening ange at its lower edge, said inner side portions having a part thereof removed adjacent at least one end whereby said inner side portions terminate inwardly of the ends of the side and central floor portions to provide a recess for an end sill, an end sill in said recess, said end sill being of channel formation with its anges interposed between and secured to said stiiening iianges and side floor portions.

10. A one piece underframe unit for mine cars comprising, a central floor portion, inner side portions extending upwardly from said central iioor portion, side oor portions extending outwardly from said inner side portions, and outer side portions depending from said side floor portions and each having an inwardly directed stiiening flange at its lower edge, said inner side portions having'a part thereof removed adjacent at least one end to provide a recess for an end sill, an end sill in said recess, said end sill being of channel formation with its `flanges interposed between and secured to said stiffening flanges and side floor portions, and an end deflector rising on a slope from said central floor portion to the plane of said side floor portions and secured to said end sill.

11. In a mine car in combination, an underframe unit comprising, a central floor portion having inner side portions extending upwardly therefrom, outer side portions having inturned stiftening iianges at their lower edges, and side floor portions connecting said inner and outer side portions, said inner side portions having a part thereof removed adjacent at least one end to provide a recess for an end sill, an end sill in said recess, said end sill being of channel formation with outwardly directed flanges overlapped by parts of said central and side floor portions and stiffening anges.

12. In a mine car in combination, an underframe unit comprising, a central floor portion having inner side portions extending upwardly therefrom, outer side portions having inturned stiffening flanges rat their lower edges, and side floor portions connecting said inner and outer side portions, bracing means connecting said stiiening anges, side floor and outer side portions, and spaced members secured to said stiffening anges and dening pedestal jaws therebetween tor receive and guide journal boxes.

13. In a mine car in combination, an underframe unit comprising, a central oor portion having inner side portions extending upwardly therefrom, outer side-portions having inturned stiiening flanges at their lower edges, and side floor portions connecting said inner and outer side portions, bracing means connecting said stiffening flanges, side iioor and outer side portions, a pair of spaced pedestal forming members secured to said stiffening flange, a journal box guided between said members, and spring means interposed between said journal box and stiffening flange; said bracing means being substantially above said springs.

14. A iioor and frame structure for mine cars of the low level type comprising a single metal plate having a central depressed portion forming a central lading body, longitudinal side portions forming combined side lading bodies and wheel housings, and longitudinal downwardly and inwardly extending edge portions forming with the side lading portions side sills of channel form of a depth substantially equal to the depth of the depressed central portion.

15. A one piece underframe unit for mine cars comprising a central iioor portion, inner side portions extending upwardly from said central floor portion, side floor portions extending outwardly `from said inner side portions, and outer side portions depending from said side `floor portions and each having an inwardly directed stiiening flange at its lower edge whereby the side portions of said unit are substantially bo-x sections, and means for retaining the box-section portions in definite fixed relation comprising rigid elements located intermediate the end portions of the underframe unit and extending between the inner and outer side portions and connected thereto and to said flanges and to said side floor portions.

WARREN V. JOHNSON.