US972921A

US972921A - Car-truck.

Info

Publication number: US972921A
Application number: US19455904A
Authority: US
Inventors: Gilbert P Ritter
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-02-20
Filing date: 1904-02-20
Publication date: 1910-10-18
Anticipated expiration: 1927-10-18

Description

G. P. RITTER.

CAB TRUCK.

APPLIUATIOH FILED 11:11.20, 1004.

Patented @et 18,1910.

2 BHEETBSHEET 1.

llllll/ llllllllll G. P. RITTER.

CAB TRUCK.

APPLIUATIOH Hmm FEB. zo. 1904.

Patented 0c1.18,1910.

2 SHEETS-SHEET 2.

lil

finir earns' iena-nr naaien.

GILBERT I. RITTER, 0F CHICAGO, ILLINOIS.

CAR-TRUCK.

' Specification of Letters Patent.

` Patented oct. is, iam.

Application filed February'ZO, 1904. Serial No. 194,559.

To all whom it may concern:

Be it known that I, GILBERT P. RITTER,

.a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and. use- 'bolsteronly being shown, and the spring supported central wedge and the bolster springs being shown in elevation. Fig. 4 is an enlarged partial section on the line 4 4, Fig. 1, portions of the side frame broken away. Fig. 5 is a vertical central section of one end of thel bolster. Fig. 6 is a side elevationof one ofthe bolster guide members. Fig. 7 is a plan view of the bolster guide member shown in Fig. 6. Fig. 8 is a side elevation of the central wedge and upper spring seat. Fig. 9 is a plan view of the central wedge and upper spring seat shown Vin Fig. 8. Fig. 10 is a plan View of a portion of a modified form of side frame. Fig. 11 is a side elevation of a modified form of bolster guide member designed'for use with the side frame shown in Fig. 10. Fig. 12 is a plan view of the modified form of bolster guide membershown in Fig. 11.

Fig. 13 is a vertical central section ofone' end of a modified form of bolster adapted for use with the modified form of bolster` guide members illustrated in Figs. 11A and 12. Like symbols refer to like parts wherever they occur.

My invention relates to the construction Aof trucks for railway cars, and particularly to the type known as rigid bolster trucks, and has for its objects; first, to provide simple and efficient means for maintaining the relation of the side frames and the bolster in the vert-ical oscillations of the latter, the bolster guiding means being of such character, construction and arrangement thatl the side frames and bolster of the truck are maintained in their proper relation 4with respect to each other by the imposition of the load upon the bolster, While the truck may be dismantled for purposes of repair with great facility; second, to maintain the bolster and the side frames all in a rigid relation to each other in respect of any horizontal movement; and, third, to temper and control the excessive oscillation of the bolster springs by the frictional action of the bolster guide members upon the side frames.

Generally stated, one feature of my invention embraces a combinationwherein laterally separable` bolster guide members engage the side frames and move upwardly and downwardly with the bolster in bolster guide ways of the side frames.

A second feature of my invention consists in forming the side frames with horizontally converging bolster guide ways for the reception of the bolster guide members, in

such manner that the side frames are ren-l dered horizontally rigid with respect to each other and tothe bolster and the oscillations of the bolster springs are reduced in number and amplitude by reason of frictional control.

There are other, minor, features of invention, all as will hereinafter'l more fully appear.

I will now proceed to describe my invention more fully s'o that others skilled in the art to which it appertains may apply the same.

Since the truck is of a well known type,

and since the construction of each of the side frames is the same, and each end of the bolster and its connection with each ofthe side frames is identical, I shall describe but one half of the truck. I

In the drawings chosen to illustrate my invention, the scope whereof is particularly pointed out in the claims, A is the side frame of a truck which rests at its extremi-v ties upon journal boxes B, B of well known construction, said journal boxes being attached to the side frame by detachable stirrups C,

C having lugs

1, 1 which pass through openings 1a of the side frame, the stirrups C, C being retained in position by transversekeys or cotter pins 2c, which pass through perforations in the lugs 1c, 1c thereof; but if desired anyother means of securing the journal boxes to the side frame may be employed.

The lower rail of the side-frame is referably broadened out at the base o the bolster opening therein to form a symmetrically disposed, integral bolster spring-seat 2, said spring-seat being strengthened yby brackets or ribs 3a, 3a if desired, thus avoid- A ing the necessity, as will hereinafter appear,

of employing means other than the bolster for maintaining the transverse rigidity of the truck; but, if desired, the bolster spring@ seat may be formed independent of the side frame, or lthe well known spring-plank or sand-plank construction may be adopted in lieu of the enlarged bolster sprin -seat whereon the bolster springs are ba anced about the'side-frame.

.Bordering the side walls of the bolster opening, the side-frame is provided with bolster guide-ways 4'?, 4a for the reception of the bolster guide members, said guide- -ways being preferably horizontally converging vertical channels, but may be of other form if desired, as, for example, see the modification, Fig. 10, or the guide-ways may converge slightly vertically, in which event the bolster ide members E would approach each other as the bolster descended,

and the central wedge F would cause a compression of the springs G somewhat more rapidly\than the action of the bolster otherwise would.

The bolster D, the body portionv of which` l. may be constructed in the form of an inverted rectangular channel with cover plate The laterally adjustable and separable bolster guide members, or wedges, E, which are pocketed'in the passage 3d f the bolster and incased thereby,\are preferabl ,formed with one beveled edge or incline lface 1l corresponding to the bolster guide-ways 4B, 4, and with another oppositely beveled edge, or opposed, face 2e which is, or may be, inclined both rearwardly to converge ,withthe face 1 and alsodownwardly and inwardly,.so that the bolster guide member is lta ered or inclinedfrom front to rearl om top to bottom. The bolster gu1de' and members may be cored to lighten the construction.

in the passage or` Insertible through the opening Gd which opens into the passage or channel 3d of the bolster D is the 4central wedge, or vertically movable member, F, which is a means lof separating the bolster guide members E and causing them to engage and coact with 'the bolster guideways 4a, 4a of the side frame, and by which, also', the said bolster guide members-are spaced apart and maintained in a fixed relation with respect to each other and with respect to the bolster. The vertically movable wedge F is provided with inclined faces- 1f, 1f which converge from the base upwardly and divergev from front toward the rear, so that each face lf, 'lf corresponds with and engages a face 2*e of the bolster guide members E, but if desired the diverging taper of the faces 1f, 1f may be omitted, and the corresponding taper of the faces 2e of the bolster guide members will then also be omitted; or, the central Wedge element may be inverted, and either integral with or independent of the bolster, in which event the bolster springs will bear upon the bolster guide members. Preferably made integral with the tapered tion of the central wed-ge F, is the springseat, or spring-cap, 2f, such spring-seat being of any suitable size and configuration to afford a bearin for the bolster springs and to reciprocatereely in the bolster opening of the side-frame.

The bolster springs, or resilient. members, G, which are or may be of well known di'- mensions and capacity,l are'interposed between the bolster s ringseat 2"i of the lower rail of the side rame A and the bolster spring-seat, or spring-cap, 2f of the central member F, in such manner that the central wedgeF and bolster guide members E are yieldingly sup orted, and the strainsrtransmitted to Vthe slde-frame through the springs V,Gr are balanced about said side-frame and no transverse strain is induced in the truckstructure from this ,-cause.

The modification illustrated in Figs. 10, 11, 12-and 13 of the drawings differs from the construction shown in the principal Iigures of the drawings in that the bolster guide-ways a4, a4 of the modified side' frame A1 have not the inclined converging faces, but are vertical grooves having faces parallel with the'similar bolster guideway on the' op osite side of the bolster opening.

kflanges d1, or their equivalent, which sompwhat restrict the openings at the ends of the passage or channel 4als of the bolster, and

which engage the shoulders e2 of the modiedbolster guide members El, said bolster guide members E1 being formed with a vertically extending tenon, or lug, e1 corresponding with and adapted to en a e the bolster guideways at, a* of the si eame,

v The bo ster D1 of the modication has. stopY and with the shoulders 62,62 which abut the stop fianges Z1 and thereby limit the outward movement of said bolster guide members. In other respects the construction of the several parts is the same as that of thel structure heretofore described. i

The construction of the several elements being substantially such as -hereinbefore pointed out, the truck will be assembled by securing the journal boxes B tothe side frames A by means of the journal box stirrups C, a pair of the bolster guide members E will then be inserted in a retracted position in the channels, or passages, 3d at each end of the bolster, and the bolster will then be inserted into the bolster openings of the side-frames A. The central wedge F will then be inserted through-the opening 6d in the bottom of the bolster passage 3d so that each of its inclined faces 1f contacts a corresponding face 2e of the bolster guide members E, the latter being thus forced apart ywhereby the faces le, le, thereof are caused to engage the corresponding bolster guide ways 4a, 4a of the side-frames A, after which the bolster springs G will be interposed between the bolster spring-seats 2a of the side frames and the spring-seats, or spring-caps, 2f ofthe central wedge element F.

It will be noted that the bolster I) will rest upon the tops of the bolster guide menibers E, and that the load imposed upon the bolster is transmitted through them' tol the central wedge F and thence to the springs Gr and side frames, and also to the side-frames by the Contact of the bolster guide members E with the side-frames.

.It ,will be noted further, that by reason of the double inclination of the faces 2C of the bolster guide members-E and their engagement with the similarly inclined faces lE of the central member F, the bolster guideV members are forced outwardly, to engage the bolster guideways 4a of thc side-frames, and that they are also forced toward the front of the side-frames to directly engage the front end walls 4d of the bolster, with the result; first, that the excessive oscillation of the bolster is controlled by the friction between said bolster guide members E and the contacting side-frames A, and, second, that the side-frames A are securely maintained at a fixed distance apart and a bolster truck which. is rigid transversely is obtained.

In assembling the modified embodiment of my invention, the bolster guide members El will be inserted in the bolster channel Z3 through the opening in the bottom thereof, which is of sufficient extent for this purpose, and the central wedge element F willl be inserted to cause the tenons or lugs e1 of the said bolster guide-members El to engage the bolster guidewaysfa4 of the sideframes A1, the shoulders e2 engaging the stop flanges, or stop lugs,-l1, Z1 of the bolster I)l and thus being limited in their outward movement, but if desired the stop fianges d1, d1 may be omitted and the slioulders e2, e2 of the members E1 may engage the side-frames. In other respects the assembling of this form of truck is the saine as that previously described.

Obviously my invention is susceptible of many modifications without departing from the spirit thereof, and I therefore desire it to be known that the illustrated embodiment of my invention is but a single form thereof, the scope of which is defined by the claims.

Having thus described my invention, what ent is: l

1. In a car truck, the combination with side frames, of a bolster, a spring, a plurality-of bolster guide members, and a Verti-.

vcally movable wedge interposed between said spring and said bolster guide members, substantially as andfor the purposes specified. 2. Ina. car truck, the combination with /side frames provided with vertical bolster guide-ways, of a bolster, a plurality of wedge shaped bolster guide members, and a wedge engaging said bolster guide members, substantially as and for the purposes specified.

I 3. In a car truck, the combination with side frames, of a bolster, a vertically movable wedge, and a plurality of downwardly movable yieldingly supported bolster guide members which engage said side frames, substantially as and for the purposes specified. c i

4. In a car truck, the combination with side frames, of a bolster, a yieldingly supported wedge independent of said bolster, and a plurality of downwardly movable bolster giiide members acted on by said wedge,

' I claim and desire to secure byLetters Patsubstantially as and for the purposes specified.

porting said bolster to permit it to move vertically, laterally movable' b olster` guide members, and means for retaining said bol- 5. In a car truck, the combination with ster guide members in fixed relation with respect to said bolster, substantially as and for the purposes specified.

7. In a car truck, the combination with side frames, of a bolster, yieldingly supportedy downwardly movable members each having an inclined face, and means acting on said inclined faces whereby said downwardly -movable members engage the side frames,

substantially as and for the purposes specil fied.

8. In a car truck, the combination with side frames provided with bolster guideways, yof a bolster, springs for supporting said bolster, downwardly movable bolster guidemembers each having an inclined face', and means acting on said inclined .faces whereby said bolster guide members .coact with the bolster guide-ways of said sideframes, substantially as and for the purposes 'speciied 9. In a car truck, the combination with the side frames, of a-bolster, a plurality of yieldingly supported adjustable bolster guide members for eachend of the bolster,

,l means for retaming said wedge members in side frames provided with horizontally con\ Xed relation withv respect to said bolster,v

sulstantially as and for the purposes specifie D 12. In a car truck, the combination with side' frames, of a spring supported bolster, and a plurality of bolster guide 'members adapted to be relatively fixed with respect to each other by the action of the load imposed on said bolster, substantially as and 'for the purposes specified. l

18. In a car truck, the combination with side frames, of a spring supported bolster,a plurality of bolster guide members, and means operative'by the load whereby said bolster guide members are caused to engage lthe side frames, substantially as and for the purposes specified. y

14;. In a car truck, the combination with verging vertical bolster bguide-ways, of a bolster, springs for supporting the bolster,

a plurality of lwedge shaped bolster vguide members, and means whereby said bolster guide members en age the side-frames, substantially as and or the purposes speciied.

15. .In a car truck, the combination with side frames, of a bolster, and a lurality of yieldingly supported downwardly movable wedges engagmg said side frames, substantiallyas and for the purposes specified.

16. In a car truck, the combination with side frames, of a bolster, springs for supporting said bolster, a downwardly movable olster guide member, and a vertically movable wedge independent of said bolster, sub` stantially as and for the purposes specified.. 17. lIn a car truck, the combination withl side frames,` of a bolster, a plurality of wedges movable downwardly with said bolster, and a yieldingly supported vertically movable wedge interposed" between said downwardly movable wedges, substantially as and for the -purposes specified.

18. In a car truck, the combination with the side-frames, of a bolster, a plurality of downwardly movable relatively adjustable bolster guide members for each end of the bolster, 'and resilient members interposed between said bolster guide members and the side-frames, substantially as and for the purposes specified.

`19. In a car truck, the combination with side frames, of a bolster, a plurality of downwardly movable bolster gulde members which are relatively movable with respect to said side-frames and said bolster, and resilient members interposed between said bolster guide members and the side frames, substantially as and for the purposes specified. f

20. In a car truck, the combination with side frames, of a bolster provided at its ends with means adapted to receive a'plurality of bolster guide members, a plurality of bol/ ster resiliently-supported guide members, and means interposedv between the side frames and the ends ofthe bolster and operative by the load whereby said bolster guide members are caused to maintain the side frames and bolster in operative relav ftion with respect to each other, substantially ,as and for the purposes specified.

21. In a car truck, the combination with side frames, of a bolster, a plurality of bol- Vster guide members for each end of the bolster, said bolster guide members being xed relative to the said bolster throughout the movement of the latter, and means operative by the load imposed on said bolster whereby the said side frames and bolster guide inembers are maintained in contact with each other, substantially as and for the purposes specified.

22. In a car truck, the combination with side frames,"of a springsupported bolster,

and uiding means for the bolster maintained inoperative relation with the latter by the imposition of the'load, said guiding means engaging bolster guideways which are immovably fixed with respect to the side members being movable toward and from 10 frames. their respective side frames.

23. In a car truck, the. combination with In testimony whereof I affix my signature, the side frames, of a bolster, springs for in presence of two witnesses this twentieth supporting the bolster, bolster guide memday of February 1904.

bers removably mounted on said bolster and GILBERT P. RITTER. engaging said side frames, and means for Witnesses: maintaining said bolster guide members in WM. E. DYRE,

position -on said bolster, said bolster guide HUGH; M. STERLING.