US1933459A

US1933459A - Railway car truck

Info

Publication number: US1933459A
Application number: US493426A
Authority: US
Inventors: John J Tatum
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-11-04
Filing date: 1930-11-04
Publication date: 1933-10-31
Anticipated expiration: 1950-10-31

Description

Oct. 31, 1933. J. J. TATUM RAILWAY CAR TRUCK Filed NOV. 4, 1950 5 Sheets-Sheet l .i 7 QR 1 1H 1 H i lmfii mm; 4 & v

Oct. 31, 1933. J, TATUM 1,933,459

RAILWAY CAR TRUCK Filed Nov. 4, 1930 5 Sheets-Sheet 2 0a. 31, 1933. J. J. TATUM 1,933,459

RAILWAY CAR TRUCK Filed NOV. 4, 1930 5 Sheets-Sheet 5 Zlwuentoz dunno/11 Patented Oct. 31, 1933 UNITED STATES PATENT- orries,j

RAILWAY CAR. TRUCK John J. Tatum, Baltimore, Md. Application November 4;, 1930'. j Serial No} 493,426

' 10 Claims. (01.105-218) This'invention relates to the trucks of railway cars, particularly passenger cars.

Passenger car trucks, as nowcommonly constructed, are provided with positively guided journal boxes, each journal box being mounted in. a pedestal so as to be guided in position and in its movements by flanges on its sides engaging the pedestal legs, as a result of which the'journal the pedestal happens to be attached to the truck.

This often throws the load carried by the truck on the back end of the journal bearing in the box, or on the front end, resulting in a small bearing area of the journalbearing being overloaded to such an extent that binding between the journal bearing and the journaloccurs and oil is prevented from flowing betweenthe bearing and journal for the lubricationof the bearing surfaces- Accordingly, what is known as a hot journal occurs, whereby the journal is damaged or burnt off. Furthermore, the guides onth'e sides of the journal box'rub hard against the pedestal legs'a'nd prevent free movement of the box between the pedestal legs brought about'by the action of the cushioning springs, resulting in hard or rough riding cars. In passenger cars I tively onthe lines 6- -6, 7+7- and 8- 8 of. Fig. 1

of usual construction, the brake beams are mounted upon hangers carried by the truck frame, which mode of mounting does not allow adjustment of the brake shoes to accommodate themselves to changes of position of the wheels, f and th'e hanger suspension often interferes with a proper release of the brake shoe. Hence there is an objectionable amount of wheel flangeand track friction and resistance to travel caused because of the inability, due to's uch friction and.

to freeze or adhere togethenthus preventing free.

swinging of the truck on curves and frequently causing derailments, as wellgashard grinding'of the wheel flanges against. the railroad track, quickly wearing both track and flange to de structive limits and making them unsafe for use and requiring their removal. and replacement at, very, great expense. h The primary object of myrinvention isto provide a floating journaLbox, which is free to. move I in .theipedestal within vsafe limits. iwitho'ut re striction, thus allowing the box to..automatically adjust. itself to. prevent. bindingiof the box or. journal and the deleterious "actions, resulting therefrom. I

A- further object. of. my invention is to provide means which, while allowingthe journalbox and truck side frame in which it is mounted. to have relativefloating movements,.will prevent relative displacement of these parts.

With these and other objects in view, the in vention consists of the features. of construction, combination and arrangement of parts. hereinafterfully. described and 'claimed,..reference being had to the. accompanying" drawings, in-

Fig. 1 is a side.elevation, .partlyin section. of a portion of a truck .frame. and.--a ..journal box I structureembodying 'myinventiom Y Fig. 2 isa .sectionalfplanlview of .Dartsshown i Fi -l- Y Fig. 3 is averticallongitudinal section through the journal box shown in Figs. 1 and 2.

Fig. 4 is a viewsimilarutmFig. 2,. showing a modified form of journal boxlstr'ucture.

Fig. 5 is a section similar to Fig.3 of the jour-f nal box shownin Fig. 1.. I I

Figs. 6, 7 and 8 are cross-sections takenrespec- I FigfQlis a top plan view of .a portion of a bot-e; tom of a car body, showing in -dotted lines apart of a center bearing for a truck frame .andme'ans for lubricatingthe same. Fig. 10. is a sectional viewthrough thecarbottom and a part of. the centerbearingv of the truck, taken along the lineof the lubricant feed pipe, .and showing more'clearly thelubricating 'tion, 1 is a side frame member of the-truck frame of a railwaypassenger car provided with the pedestal 2 having thejawsor-legs 3 which may .beprovided on their inner faces with wear plates 4. In the pedestal 2 between-the legs 3'is arlegs, being of a width somewhat'les's than the ranged a floatingnjournal box 5. This journal I box is devoid of the usualguideflanges or other guiding connections at, its sideswith theflpedestal distance between the wear plates 4 of the legs and fitted to slide with freedom between the legs, so that it may accommodate itself to irregularities in the position of the pedestal and to irregularities in the journal at one and the same time. If, therefore, the pedestal deviates either inwardly or outwardly from a plumb or vertical line, or is warped or twisted, this condition of the pedestal will not affect the movements of the journal box, which may position itself either vertically or inwardly or outwardly with relation to the pedestal and on the journal as may be required, dependent upon the position the pedestal may happen to have'upon the truck. By mounting the journal box so that it is free from guiding engagement with the pedestal, the journal box is prevented from being forcibly shifted to throw the load carried by the truck either on the back end of the journal bearing or on the front end of the journal bearing, and constricting or preventing the flow of oil between the journal bearing and the journal with the result of causing what is known as a hotjournal resulting in the damaging or burning off of the journal. Furthermore," by doing. away with the use of positive guiding connections between the journal box and pedestal, 'which'rub hard against the pedestal legs and preventfree movement of the box between'the pedestal legs incident to the action of the cushioning springs, wear and tear upon the journal box and pedestal and hard or rough riding of the car and other binding and constricting actions are effectually obviated. As a result, an easy riding truck or car is obtained, wear and tear and frequent replacement and repairs "reduced, and the journal box allowed to have free and unimpeded movements for easy riding actions regardless of any irregularities in the form or condition of the pedestal or of the journal being slightly tapered or otherwise irregular.

The sides of the journal box may be provided withwear plates 6 to reduce wear andtear thereon and to provide easy contact between the journal box and the wear plates G'and, if desired, a stop' flange 6 may be provided on each side of the box at the rearfor engagement with the pedestal to limit the-outward movement of the box. The journal box 5 may be of the type shown in Figs. 2 and 3 in which the box is provided at top with a fixed or integral wedge seat '7 for the journal bearing 8, disposed between the same and thejournal 9, with which seat or wedge and the journal it may have an interlocking connection'to assist in holding the box from inward or outward displacementon the journal and relative to the pedestal and journal. 'The box is provided externally at its top with side flanges v 10 and front and rearflang'es 11, arranged in parallel pairs and to form a pocket or socket for interlocking connection with a depending or depressed part of the end 12 of the equalizer bearer 13. This end of the bearer seats on a rib 13' along the top of the bearing block 15 between the flanges 11, therebyforming an interlock between the journal box and thebearer, which alioning springs 14, and the journal box and the" interlocking connection between the journal bearing g and the seat of wedge 7 and the'journal 9, the journal box is held from displacementwhile permitted to have automatic adjusting and floating movements, thus securing a highly efficient cushioning action for easy riding and adjustment of the journal boxes with the journals, Without binding restriction, to permit the wheels to accommodate themselves to curves and irregularities in the track rails, and frictional wear and tear is reduced to theminimum, giving longer life to the journal boxes and pedestals and obviating the expensive frequent repairs and replacements now necessary incidental to the use of pedestals and journal box mountings of ordinary construction. The pocket or socket formed by the fiangeslO and 11 may also serve to receive a cushioning damper of rubber or other elastic material engaged by the end of the bearer l3 and forwardinga cushioning action for the movement of the bearer, while preventing objectional grinding noise and wear and tear due to direct contact of metal upon metal.

The journal box construction disclosed inFigs. 2 and 3 adapts the seat or .wedge for the journal bearing to be cast with the roof of the box, thereby eliminating what is commonly known as the journal bearing key, commonly made use of to hold the journal bearing in place and which, as

wedge wearing fiat] My construction of the journal box avoids the extra cost of the wedge and eliminates entirely the wear and tear on. top

. and on the inside of the roof of the box when the wedge is usedas a'separate piece.

I may," however, employ the construction of journal box shown in Figs. 4 and 5, in which the integral wedge '7 is removed and a standard type of A. R. A. wedge 7 used in its place, which wedge interlocks in a suitable manner with the box and has aninterlocking connection with the journal bearing 8, which in turn has an inter-,

locking connection with the journal 9. 'While the construction of journal boxshown in Figs. 2 and 3 is simpler and less expensive, that shown in Figs. 4 and 5 may be used with equal working efliciency. v r

The described construction of truck design including the floating journal box, arranged and mounted'as set forth, does away with the use of a multiplicity of parts, equal in number to about two hundred pieces per car,avoiding the purchasecost of such items, the'inspection 're-.

quirements, and the maintenance cost, and producing a truck containing less parts subject to damage or breakage and giving easier and quieter riding of the trucks under the car, and doing away largely also with the hazards incident to the use of trucks of ordinary construction containing so many parts liable to cause derailments and other accidents.

In accordance with my invention, I also mount. the brake heads 16 on the brake. beams 17, each mounted at its upper end on a. pivot bolt or member 18 engaging inclined slots 19 in the fork plates 20' of forked hangers carried by the truck frame, and on which bolt the brake head may slide laterally whereby the brake beams and shoes are mounted to slide toward and from the wheels in a path inclined tofthe horizontal, as 7 well as to have pivotal movements to adapt the brake shoes to. adjust themselves to the wheels in a braking action.- The arrangement is such that after application, and upon release of the brake mechanism, the brakes will automatically by their weight or by the action of gravity move away from the wheels due to the outward and downward inclination of the, slots 19.

brake applying and releasing actions, and to recede positively on a brake releasing action so as to prevent the undue wear and tear caused ordinarily by continuance of engagement of; the brake shoes with the wheels after a brake releasing action. This construction also obviates the use of the ordinary brake hangers pins and wheels and causing track and flange resistanceto travel and undue wear and tear upon such parts.

As shown particularly in Figs. 9, 10 and 11, the truck is provided with a center bearing plate 21 for coaction with a center bearing plate 22 on the car, and said plate 21 is formed with an upstanding central circular bearing stud 23 and an annular channel 24 surrounding the same, while the plate 22 is provided with a depending annular bearing member or ring 25 which surrounds the stud 23 and enters the annular channel 24, whereby the truck is mounted to swing upon the car. In order to prevent direct contact between the opposed surfaces of the channel 24 and ring 25 an annular hard metal wear plate 26 is disposed between said surfaces in the channel. This ring plate acts as an effective distributor of introduced lubricant, and serves to better sustain the wear andto prevent direct contact between the soft metal surfaces of the center plates which are subject to friction and heating and are liable to bind or freeze under certain conditions. The hard metal wear plate 26 prevents any binding or freezing due to such causes, so as to obviate accidents due to ruptures or derailments when the truck is bound and prevented from having a free swinging action. The bottom wall of the channel 24 and bottom surfaces of the ring 25 are provided with annular and radial lubricant distributing grooves. 27 and 28 which intersect vertical lubricant supply channels 29 in the plate, the channel in the plate 22 being connected with a lubricant feed pipe 30 supported by brackets 31 on the top plate and car body and provided at its free end with a reducer 32 and a suitable fitting 33 for application of a lubricant pressure pump "whereby lubricant under proper pressure may be supplied from aside or from one end of the car to the center bearing to keep the parts thereof properly lubricated, without the necessity of lifting the car off the truck, or the operator getting under the car to supply the lubricant. provision of a center bearing with a wear plate between the centering plates and a lubricant feed means of the character described, trucks may be kept well lubricated in a ready and easy manner and prevented from freezing, so as to entirely eliminatev all liability of binding and freezing of the trucks.

From the foregoing description, taken in connection with the accompanying drawings, the

By this" means the brake heads are mounted for free and I easy automatic adjustments to suit varying conditions of the brake rigging and wheels in thevthe journal.

By 6. In a journal bearing for railway'cars, a truck 140 construction, mode of operation and advantages" of my invention will be readily understood .without a further and extended description and such construction and advantages appreciated by those versed in the art. While the structure disclosed is preferred, it'will; of-course, be understood that changes in the form, construction and arrangement andproportion of parts may be made, within the scope of the appended-claims, without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, I claim:

1. In a journal bearing for railway cars, a car truck having a pedestal, a journal box'mova'ble in; the pedestal and having its sides in spaced relation to and free from guidingengagementwith the legs ofthe'pedestalso as to adapt the box tohave a floating; movement between'said legs, and amember carried by'the truck and .vertically movable with the 'box, said' member having an interlocking engagement with the top of .the box to hold the box from inward or outward displacement. 2. In a journal bearing for railway cars, a car truck having a pedestal, a journal box movable in the pedestal and having its sides in spaced relation to and free from guiding engagement with the legs of the pedestalso as to adapt the box to have a floating movement between said legs, and

an equalizer bearer having an interlocking connection with the top of the box to hold the box from inward or outward displacement.

3. In a journal bearing for railway car trucks, a truck frame having a pedestal, a journal box movable between the legs of the pedestal, said box having its sides spaced from and free from guiding engagement with said legs, and a springpressed bearer member carried by the truck and having an end portion overhanging the box and having an interlocking engagement with the top thereof for holding the box from inward or outward displacement.

4. In a journal bearing for railway cars, a truck frame provided with, a pedestal, a journal box movable between the legs of the pedestal, said box having its sides spaced from and free from guiding engagement with the sides of the pedestal, and said box having in its top a seat socket, and an equalizer bearer having an end portion engaging in said socket and interlocking with the box to hold the same from inward or outward displacement.

5. In a journal bearing for railway cars, a car truck having apedestal, a journal box movable between the legs of the pedestal and having its sides spaced from and free from guiding connecengaging the locking element of the boxto hold said box from inward or outward displacement on frame having a pedestal, a journal box movable between the legs of the pedestal and having its sides spaced from and free from positive guiding engagement therewith, said box being provided at its top with pairs of longitudinal and trans notches and interlocking with said socket to hold 150 the box from inward or outward displacement on the journal. i

".7. In a journal bearing for railway cars, a truck frame provided with a pedestal, a journal box movable in the pedestal and having its sides spaced-from and free from positive guiding engagement with the pedestal legs, said box being provided at its top with an internal integral wedge for the journal bearing and an external locking socket, and an equalizer bearer having an end portion engaging said socket to hold the box against inward or outward displacement on the journal.

8. In a car truck, the combination with a car axle journal and a truck side plate having a pedestal, of an'axle box receiving the journal and operatively disconnected from and mounted for floating movement independent of andbetween the pedestal legs, said box and legs having their opposed surfaces constructed and arranged for relatively unobstructed freedom of motion to permit the box to position itself upon the journal and to permit the box and pedestal each to have independent or conjoint vertical and lateral movements.

to hold the box from inward or outward displacement.

10. In a journal bearing for railway car trucks, a truck frame having a pedestal, a journal box loosely mounted in the pedestal in normally spaced relation to the pedestal legs, without restricted guiding connections therebetween, so as to have free independent or conjoint vertical and lateral movements between and with respect to each other and the box to adjust itself to positions of the journal without regard to the pedestal, and an equalizer bearer engaging the box to hold the box from inward or outward displacement.

JOHN J. TA'IUM.