US1347887A - Car-truck - Google Patents

Description

J. C. BARBER.

Patented July 27, 1920.

2 SHEETS-SHEET I.

` J. c. BARBER.

'CAR TRUCK.

APPLICATION FILED NOV. I0. 1919.

UNITED STATES PATENT OFFICE.

JOHN CIBARBEVR, OF CHICAGO, ILLINOIS.

CAR-TRUCK.

Specification of Letters Patent.

Application filed November 1C,l 1919. Serial No. 336,917.

To all whom t may concern Be it known that I, JOHN C. BARBER, a citizen of the United States, residinor vat Chicago, in the county of Cook and tate of Illinois, have invented certain new and useful Improvements in Car-Trucks; and I do hereby declare the'following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

y present invention relates to car trucks and is directed, particularly, to the improvement of six wheeled trucks wherein the holsters, or bolster structure, is mounted for lateral motion.

Generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In this improved truck, by a novel arrangement of springs, journalrboxes and bolster structure, I provide an arrangement wherein the load will be equalized. without the use of what are usually known as equalizers, and which, in the usual six-wheeled truck, are additional independently formed equalizing levers: and by this novel arrangement, I greatly simplify the truck structure.

As further important features, I make the journal boxes counterparts, one of the other, so that they may be interchangeably used, and also, make the springs alike or counterpart so that they may also be interchangeably used. The invention, howeverinvolves certain other novel features, as will here# inafter appear. The invention is illustrated in the accompanying drawings wherein like characters indicate like parts throughout the several views.

Referring to the drawings:

Figure 1 is a plan view of theimproved truck;

Fig. 2 is a side elevation of the truck; Fig. 3 is a transverse section taken ap'- proximately on ltheirreg'ular line 3--3 of Fig. 1;

Fig. 4 is a horizontal section takenl approximately on the irregular line 4-4 of ig.2;and^' y Fig. 5 is a fragmentary section on the line 5-5 of Fig. 3.

The outside or end wheels 6ofy the truck are secured in the-`customary way to axles 7, while the intermediate or. central wheels 8 are, likewise, secured to an axle 9. lThe ends of the scveral'axles V7 and 9 are journaled in ournal boxes 10 that are all alike, so that they may be interchangeably used, and any box may be applied to any axle, and if cast, all of the boxes may be cast from the same pattern. f

The truck side frames 11 are here shown as one piece cast steel with three openings 12 for the journal boxes and two additional openings 13 for the ends of the vtwo bolsters here employed. The outside openings 12for the end journal boxes are between pedestals 14, while the central openings 12 are between pedestals 14u'- The said openings 12 extend to the bottom of the laterally spaced depending flanges or webs 11a of theV 'side frame 11 and these gaps Aare normally closed by bridge bars 15` rigidly bolted to the lower ends of the adjacent pedestals;

The pedestals are capable of vertical movements in channels formed in the lsides ofthe journalboxes 10 between laterally spaced outstanding stop flanges or shoulders 16. On the several boxes', the spacingbetween flanges 16 is the same, and the width of the end pedestals 14 is such that the end journal boxes will have little or no move- Patented July 27, 1920.

ment transversely of the truck. The width A of the intermediate pedestals 14, however, is less than that of the pedestals 14, so that there will be' clearance between the same and the stop flanges 16 on the intermediate or central journal boxes (see particularly Fig. 1), and this, as is obvious, will permit movements of the central journal boxes transversely of the truck, as required when the truck is traveling curves. l,The above noted lateral movement of the central jour nal boxes and wheels, it will be understood, is independent of the lateral motion between thecar body and the truck provided for, as presently to be described.

Above, and at the sides ofthe bolster passages'l, the two side frames .10 are rigidly tied together by rectangular double transoms'18, so that the truck frame made up ofthe said sidefrainesV and transoms is a rigid structure. l A i The truck holsters 19 are capable of both yvertical and endwise movements in the to limit the endwise movements of the said bolsters transversely of the truck. Otherwise stated, the stop lugs 2Ol limit the lateral motion proper of the truck frame in respect to the car body, or conversely, the

car body in respect to the truck frame.

The transoms are preferably provided with brake hanger lugs 22, and the ends of the side frames are turned inward and provided with brake hanger lugs 23 arranged to support brake shoes, not shown, for engagement with bothV sides of the several truck wheels. Y

The two bolsters 19 are tied together for common Vlateral movements, that is, common endwise movements transversely of the truck, preferably by an H-shaped bolster tie frame which is indicated as an entirety by thefnumeral .24, and, at its central portion, carries a center bearing 25 for cooperation with a center bearing .not'shown but which will be located on the truck body in the usual or any suitable manner.

The truck side frames are carried from the journal boxes through interposed springs and self-centering lateral motion V'devices, preferably cooperating rollers and Vconcave seats, are interposed, also between the central transversely or laterally movable journal boxes and therside frames.r

Springs and self-centering lateral motion bearing Vdevices also support the bolsters from the side frames land these latter are preferably ofthe character disclosed and broadly claimed in my prior Patent 1,316,553, the same being here brought into Y a new andfimportant coperative relation to the main elements ofaf sixLwheeled car Y truck.

. The springs above just referred to are preferably all coiled springs made, all ex- -V actly alike, yboth in respect to normal length and strength.v Those springs thatV are employed to carry the truckframe from the journal boxes are indicated by the numeral 26 and those springsthat are used to support the bolsters 19V from, the side frame are indicated by the numeral'27. The springs 2G are shown asfarranged in groups of two, their upper ends being seated in the channels of the Yside frames 1l. The end groups 26 are seated' around bosses 28 formed on the tops of the journal. boxes.

Between the bottoms of the central of springs 26 andthe central journal boxes, self-centering lateral motion devices comprising spring bases 29, roller bases 30 and interposed rollers 31 are placed; and to provide additional space for such lateral mogroup tion devicesk (see Figs. 2 and 5), the sideV with corresponding bosses 32 that telescope into the lower ends ofthe central springs 3G.

The lateral motion devices that support the bolsters 19, as preferably constructed, comprise spring bases 33, roller bases 31 Yand interposed rollers 35, (see particularly ber lateral motion trucks. Substantially the same statement is true respect to the previously bases 30. Y

As shown and preferred, `the spring bases 33 are cast or formed integral with and constitute the ends of transverse spring planks 40, which, at their central points, have upstanding studs 41 that lit seats inthe cen tral lower sters V19,V so thatv the bolsters vand spring planks mustmovetogether transversely of the truck. f In the above described arrangement, theV springs between the side frames and journal boxesandbetween thesid'e frames and bolsters will'take care of all irregularities described spring bases 29 and roller Y portions of the respective b olA l in the track and substantially equalize the Y load in the various springs or spring groups. When the tie bars 15 andy 27 are applied, they give very great rigidity to the lower portions ofthe side frame, rbut when 're moved they permit, in the one instance, Vthe journal box to be removedrfrom'the side frames, and in the kother instance, the truck bolsters and springV planks 'te bei-removed.

.quired lateral movements of the central wheels in travelingcurves and on straight track yieldingly hold-the center wheels in intermediate positions ali-nedwith the-front and rear wheels.

VSix-wheeledv trucks embodying my invention abovedisclosed maybe'used', both in vpassenger and in freight service.

' What Ifclaim is: vy y, l Y

1. In a car truck, the combination with end andV intermediate wheels and a truck frame, said intermediate wheels being mountedV for 'lateral movements in respect to the truck frame and end wheels, of a bolster structure carried by said truck frame, and lateral motion devices permitting lateral movements of said bolster structure indeendently of the lateral movements of said intermediate wheels and in respect to the truck frame.

2. In a car truck, the combination with end and intermediate truck wheels, their axles and journal boxes on said axles, of connected truck side frames spring supported on the end of intermediate journal boxes, lateral motion devices permitting lateral movements of said intermediate wheels and their journal boxes, connected truck bolsters spring-supported from said side frames, and lateral motion devices permitting lateral movements of said truck bolster independently of the lateral movements of said intermediate truck wheels and their journal boxes.

3. In a car truck, the combination with end and intermediate truck wheels, their axles and journal boxes on said axles, of connected truck side frames spring sup-ported on the end of intermediate journal boxes, lateral motion devices permitting lateral movements of said intermediate wheels and their journal boxes, connected truck bolsters spring-supported from said side frames, and lateral motion devices permitting lateral movements of said truck bolster independently of the lateral movements of said intermediate truclr wheels and their journal boxes, the connections between said truck bolster having a centrally located center bearing.

4. In a car truck, the combination with end and intermediate wheels, their axles and journal boxes on said axles, truck side frames, connected truck bolsters extended through said side Jframes, springs interposed between said end and intermediate journal boxes and side frames to support thelatter, end springs interposed between said side frames and bolsters, all of said springs being counterparts, so that they may be interchangeably used or applied, lateral motion devices interposed between the center journal boxes and side frames, and lateral mol tion devices interposed between said side frames and bolsters.

5. In a car truck, the combination with end and intermediate truck wheels, their axles and journal boxes on said axles, of connected truck side frames having seats for said journal boxes and movable vertically thereon, springs supporting said side frames from said journal boxes, said side frames between said journal boxesl having bolster passages, connected truck bolsters mounted for vertical and limited endwise lateral movements in said bolster seats, roller bases supported at the bottoms of said bolster passages, rollers thereon, spring planks connected to move transversely with the respective bolsters and, at their ends, having spring bases seated on the respective rollers, and springs interposed between said spring bases and the ends of the overlying bolsters.

' G. In a car truck, the combination Vwith end and intermediate truck wheels, their axles and journal boxes on said axles, of connected truck side frames having seats for said journal boxes and movable vertically thereon, springs supporting said side frames from said journal boxes, said side frames between said journal boxes having bolster passages, connected truck bolsters mounted for vertical and limited endwise lateral move-v ments in said bolster seats, roller bases supported at the bottoms of said bolster passages, rollers thereon, spring planks connected to move transversely with the respective bolsters and, at their ends, having spring bases seated on the respective rollers, springs interposed between said spring bases and the ends of the overlying bolsters, and bridge bars detachably lapplied to said side frames below said bolster passages and directly supporting the corresponding roller bases, said roller bases and spring bases having cooperating concave self-centering rollerengaging surfaces.

Iny testimonv whereof I aiix my signature in presence of two witnesses.

l JOHN o. BABBBB.

Witnesses:

Y E. W. WEBB,

LEB W. BARBER.

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