US1740508A

US1740508A - Railway truck

Info

Publication number: US1740508A
Application number: US253636A
Authority: US
Inventors: Einar G Hallquist
Original assignee: General Steel Castings Corp
Current assignee: General Steel Castings Corp
Priority date: 1928-02-11
Filing date: 1928-02-11
Publication date: 1929-12-24
Anticipated expiration: 1946-12-24

Description

Dec. 24, 1929. E. G. HALLQUIST RAILWAY TRUCK Filed Feb. 1l. 1928 4 Sheets-Sheet ZNVENTO :-I. -ML w-- Dec. 24, 1929. E. G. HALLQUlsT 1,740,508

RAILWAY TRUCK Filed Feb. l1. 1928 4 Sheets-Sheet 2 NMEA/TOR Einar Ha//gU/'Sl' Dec. 24, 1929. E. G. HALLQuls-r I 1,740,508

RAILWAY TRUCK Filed Feb. ll. 1928 4 Sheets-Sheet 5 gigi.

Dec. 24, 1929; E. G. HALLQUIST RAILWAY TRUCK 4 snets-sneet 4 Filed Feb. ll. 1928 Patented Dec.. 24, F1929 UNITED STATES PATENT lolllcE EINAR G. HALLQUIST, OF EDWARDSVILLE, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO GENERAL STEEL CASTINGS CORPORATION, OF GRANITE OIIY, ILLINOIS,

A CORPORATION OF DELAWARE nauwer frauen Application filed February 11, 1928. Serial No. 253,636. l

My invention relates to railway rolling stock and consists in a novel truck structurel adaptedv to be used for heavy duty.

One object of my invention is to reduce the wheel load and this object is accomplished by providing four axles and eight wheels 1nstead of two or three axles and four or sin wheels.

Another object ol my invention is to make the wheel base as short as possible,thereby reducing the extent which the body overhangs tle center plate and also reducing the necessary side play of the axles in their journals. l attain this object by placing the middle wheels oi the truck very close toeach other.

f vSuch arrangement makes it diiiieult to vprovide brake heads and other brake gear-between the middle wheels and another object of my invention is to provide suicient braking area, which object l attain by providing clasp brakes on the end wheels of the truck and single brakes on the outer portions of the intermediate wheels of the truck.

lAnother object of my invention is to provide` a bolster especially adapted for heavy duty and is partially attained by making the center portion of the bolster of deeper and stronger cross section (such as a box cross section) than ordinarily. The spaced intermediate axles of an eight wheel truck readily' Y accommodate such a bolster and'where the bolster may be elevated sufciently to clear an underlying axle, a bolster with such a center portion may be used on a sin wheel truck.

Another object of my invention is to provide a simple truck trame supporting equalizing system' which eliminates bending moments at the center of the wheel piece due to vertical loads. p I attain this objectby proriding independent equalizing systems for each pair of axles and by supporting the truck frame at a plurality of points along its lengthl: i 'y v 'lhe above and various other more detailed objects are attained by the structure illustrated in the accompanying drawings, in Which-'f f Figure 1 is a one-half longitudinal vtop l view of a truck embodying a preferred form` of 'my invention.

F igure/Q is in part a side elevation of and l in part a sectiomon 'the longitudinal center line of the structure shown in Figure 1.

Figure 3 is a` side elevation, largely diagrammatic, illustrating the brake rigging applied to the truck shown in Figures 1 and?,

the rigging being omitted from Figures 1 and v i 2 for the purposes of more clearly illustrating the other structure.

' Figure d is a transverse section on the line 1-4 of Figure 1.

Figure 5 is a one-half end view of the truck.

Figures 6 and 7 correspond to Figures 1 and 2 but illustrate a modied form of my invention in which the center bolster is integral with the truck traine.

Figure 8 is a one-half longitudinal top view and l Figure 9 is a side elevation of a four wheel truck embodying some of the features of my invention, part of the structure being broken away in Figure 9 to'more clearly illustrate other parts of the structure.

Figure 10 is a vertical transverse section on line 1 0-10 of Figure 9.

'lhe truck illustratedin Figures 1 to 5 com-f prises four

axles

1, 2, 3, and d mounted on which are supported leaf springs 9 and 10l which, as readily understood, will be duplicated on the righthand end of the truck.-

'lhese springs support the truck frame comprising wheel pieces 11, cross transoms 12 with lateral anges 12, and end rails13 and suitable brake hanger brackets 14C,- equalizer tulcrums' 1,5, spring caps 16, and other details Y 90.

as may be desired.

The springs support the frame throu l1 an equalizing system including equalizers l suspended lfrom the springs by links19 and positioned between the sides of the box-shaped wheel pieces 11 and tulcrumed thereon as indicated at 18. The inner end oi each spring 10 isanchored directly to the wheel piece by a hanger 20 located near the longitudinal center of the truck and the outer end of sprin Q supportsthe truck through a hanger 21 an a coiled spring 22 seated oncap 23 carried by the hanger. lt will be noted that the spring system indicated in the side elevation portion of Figly into the space between the e' axles.

ure 2 is connected to the frame independent of the similar spring system on the other end ofthe truck. lt will-also be noted that each of these spring systems supports the Ltruck frame at a point near its ends, at a pointintermediate the wheels 5 and 6, and at a point near the center of the truck.

The superimposed load is transmittedto the truck frame by means of a center bolster comprising a center portion 24 having a general box-shaped cross section and located between axles 2 and?) and projecting downw''ldis center` bolster is provided wi h` `box-shaped karms 25'which extend upwardly from the centerportion to clear

axles

2 and 3 and then project downwardly and outwardly so as 'i to extend under the transoms l2 from which vas the center bolster is supported by means of links 26, the lower endsof which engage pins 27 seated in spaced bearings 23 providedon the box-shaped ends of the center bolster arms 25. This' arrangement places the supporting pins in double shear similar to the arrangement for the pins 29 at the upper ends of links 26.- 'lhis arrangement also. provides a maximum amount of strength for the center bolster arms and avoids the likelihood of failother.

ure of these center bolster members when heavily loaded. l

' Referring to Figure 3, it will beseen that the brake gear includes six shoes 30 applied to the wheels on one side of thetruck which affords the saine braking surface as has been provided in six wheel trucks with clasp brakes. The brakes are so arranged., however, that the middle wheels 6 and 7 only have brakes applied to their outer faces or the yfaces nearest the ends of the truck, and this yenables thetwo middle wheels to be placed so close together that they merely clear each The space between wheels 5 and 6 and wheels 7 vand 8 must be large enough to provide clearance for the transom members and this clearance is suiiicient to accommodate. brake rigging applied to each of the wheels.

This drawing also indicates the suspension of the brake hangers 3l from the brackets 14 which are formed integrally on the truck vframe.

f HIn the modification illustrated in Figures 6 and-7 ,the same axle and wheel arrangement is used but the truck frame includes an integrally formed center bolster having the box-shaped center portion 32 with boxvshaped arms 33 united with the box-shaped transoms 34. Otherwise'the truck construc- -tionis substantially 'the same as the preferred form illustratedn Figures 1 to 5 and'I retain the advantages inherent in the close coupling weones `oit the middle wheels and in the independent 'the frame, supported by springs 41 mounted on equalizers 42, includes spaced transoms 35, each box-shaped in cross section, and pivoted supporting links 36. 'lhe truck bolster 37 is box-shaped in cross section and has depending portions 38 at its ends, which depending portions are provided with laterally extending arms 39 box-shapedin cross section and providing spaced: bearings for the pins 40 by which-thevbolster is supported by links 36.

lln both of the link suspensions illustrated, the pinsat both ends of the links are placed in double shear and the bolster arms are shaped to provide the greatest amount of strength for a given weight of metal.

Obviously, many variations in the details of the truck structure may be made without departing from the spirit of my invention, and l contemplate the exclusive use of all of the features of my truck, however used, which come within the scope of my claims.

ll claim:

l. lin a railway truck, eight wheels mounted on four axles, the two middle axles being nearer to each other than to the end axles, clasp brakes on the wheels of the end axles and single brakes on the faces of the wheels of the middle axles nearest to said end axles.

2.- .In an eight wheel truck, a frame including wheel pieces with pedestals for four axles, spaced cross transoms and transverse end rails between said wheel pieces, and brake hanger brackets formed integrally on said transoms and end rails for mounting-brakes on both sides of the end wheels and at the outer side of each middle wheel.

3. In a railway truck, a rigid truck frame, two pairs of axles, transoms across and rigid with said frame between the axles of each of said pairs, and a truck bolster between saidk pairs and supported by said transoms.

4f. ln a railway truck, a truck frame, two

pairs of spaced axles, transoms across said frame between the axles of each of said pairs,

and, a center bolster having arms extending ,6.In a railway truck, a Vframe including 'i spaced crosstransoms, and a truckv bolster; having a box-shaped body with arms extending longitudinally of the truck and carried by said transoms. l

. 7. In a railway truck, a frame including spaced cross transoms, and a truck bolster having a box-shaped body with box-Shaped 1 30 to said transoms.

p agradece arms extending longitudinally of thetruck i and carried by said. transoms.

8. In a railway truck, a frame including spaced cross transoms box-shaped in cross.

section, `and a truck bolster having a boxshaped bfody .with box-shaped arms extending longitudinally 4of, the truck 'and carried by said transoms. p 1

` ,9. In 'a railway truck, a frame/including wheel pieces box-shaped in cross section,` spaced transoms-connecting said wheel pieces and box-shaped in cross section, anda truck bolster having a `box-shaped body with boxshaped arms extending longitudinally of the truck 4and carried by said transoms.

l0. ln a railway truck, a frame including spaced c'ross transoms, axles spaced from the centerof the truck., a truclx bolster between said axles, and box-shaped arms on said bol ster extending over said .axles and connected l1. In a railway truck, a Yframe including .spaced cross transoms, axles spaced from the center of the truck, atruck bolster between said axles, and box-shaped arms on said bolster extending upwardly over said axles and then downwardly beneath said transoms and supported Vironi the latter.

l2. ln a railway truclr, a single truck trame including wheel pieces and spaced cross transomf's, two pairs of wheeled axles with journal "'boxes, equalizers supported lfrom said journal boxes and ulcrumed on and supporting said wheel-pieces adjacent said transorns, and a truck bolster carried by said transorns. y

i3.j ln a railwaytruclr, two pairs oil axles with wheels and journal boxesthereon, equalizers carried by the respective journal boxes 'j ried by' said of each.. pair of axles, and a frame including cross transoms positioned between the axles of eachjofssaid pairs, said frame being carequalizers adjacent said transorns. u f l ll. lh a railway truck, av single truck trarne, two pairs of axles journalled in pedestals rigid with said frame, and independent v equalizlhg systems for supporting said trame portingsaid wheel from eabh of said pairs of axles.

l5. In a railway truck, two pairs ol axles, journalboxes, a frame with hollow wheel pieces, andequalizers housed in said wheel p1eces between the axles of each oit' said pairs, said eqilalizersgbeing fulcrumed to and suppieces and-carried on said journal` boxes.

lti

16. ln a railway truclx, two pairs oi axles, journal boxes, a frame with hollow wheel pieces, and equalizers housed in said wheel pieces between the axles of each of said pairs, said equalizers beingfulcrumed to and supporting` said wheel pieces and carried on said journal- .boxes by means of spripgs housed in said wheel pieces. l

l'l". 'ln a railway truck, a single frame, four axles, and an equalizing'system supporting said frame at points spaced longitudinally of the truck and located respectively outside of the end axles, between the middle axles and between the middle axles and the end axles. j

18. ln a railway truck, a single frame, four axles and two independent equalizing systems, each supporting said frame at points spaced longitudinally of` the truck and located respectively outside of the end axles, between the middle axles, and between the middle axles and the end axles.

19. ln la railway truck, a frame, spaced transorns with lateral flanges, a pluralityof axles between said transoms and spaced so each other and project under said flanges, and axles on the outer sides of said transoms and spaced from said first-mentioned axles sulciently for their wheels to accommodate said transoms between them.

20. In a railway truclnta frame, spaced transonis, a plurality olaxles between said transoms and spaced so closely thattheirK adjacent wheels barely clear each other, and axles on the outer/sides of said transoms and spaced from said lirst-mentionedaxles sufficiently for their wheels to accommodate brake gear between them.

2l. ln a railway truck, a frame, spaced transoms, a plurality of axles between said 'transorns and spaced so closely that their adjacent wheels barely clear each other, and

section, a bolster between said transoms having legs extending beneath said transoms and box-shaped in cross section, and hangers between the sides of said transoms pivotally suspending said bolster legs. ,l

24. ln a railway truck, two pairs ot axles,

a frame rwith hollow wheel pieces, and two equalizing systems housed inv said ywheel pieces between the axles of each of said pairs respectively. v i

25. ln a railway truck, a trame including spaced cross transoms, axles spaced from the" ion llO

enter of the truck, a truck bolster` between said axles and having a box-shaped cross sedtion, and box-shaped arms on said bolster extending upwardly over said axles and downwardly beneath said transoms and supported `from the latter.

26. ln a frame for a railway truck, wheel pieces with pedestals for the truckk axles,v

closely that their adjacent wheels barely clear 80 i Y 4transverse end rails,y and spaced cross transoms extending between said wheel pieces and located between said end rails, the pedestals for two of said axles being located between the ends of said transoms.

27. A' one piece frame for a railway truck comprising wheel pieces with pedestals for the truck axles, end rails and cross transoms integral with said wheel pieces, ythe pedestals for two of said axles being located between the ends of said transoms.

28. In a railway truck, a frame including spaced cross transoms, axles spaced from the *center of the truck, a truck bolster between said axles, and arms on said bolster extending over said axles and connected to'said transoms below the tops thereof.

29. In a railway truck, a one-piece truck frame including transverse transoms, two pairs of axles, the axles of each pair being on opposite sides of a respective transom, and a truck bolster located between said pairs of axles and supported by said transoms.

30. ln a railway truck, a truck frame ini cluding four pairs of pedestals rigid with the frame, two pairs of axles journalled in said pedestals and two spring equalizing systems independently anchored to said frame, each system supporting said frame from one of said pairs of axles. f i

In testimony whereof ll hereunto aiiix my `signature this 25th day of January, 1928.

ElNAlFt G. HALLQUIST;