US826872A - Car-truck. - Google Patents

Description

m. 826,872. PATENTED JULY 24,1906.

S. OTIS. SAR TRUCK.

APPLICATION FILED FEE-13,1905.

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' SPENCER one, or onroAco, ILLINOIS. i

-QAR-TRUQK Specification of Letters Batent.

Yatented July 24, 1906.

To all whom it may concern/.- 4

Be it'known that I, SPENCER OTIS, a citizen of the United States, residing in Chicago,

' in the county of Cook and State of Illinois,

A further object is to provide a car-truck having a frame and bolster mechanism comprising means for equalizing the weight of the load.-

A further object is to provide a car-truck having three pairs of Wheels, with frame and bolster mechanism mounted upon such wheels and adapted to permit the independent vertical movement of each pair of wheels to eqlualize the weight of the load upon such who s and to enable the entire truck-frame to be mounted inside the wheels.

A further object is to provide a car-truck mechanismcompris'ing three pairs of wheels, with bolster mechanism and s ring mechanism arranged between the w -eels for sup porting the bolster mechanism, whereby the use of an ordinary pedestal-frame having springs directly over the axle-jonrnals may be dispensed with in a six-wheel truck.

Other and further objects of the invention will appear from an examination of the drawings and the following descri tion and claims.

The invention consists in t e features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure l is a plan view of a car-truck constructed in ac cordance with my improvements; Fig. 2, a

side elevation of the same; Fig. 3, a view in elevation taken on line 3 of Fig. 1 looking 111 the direction of the arrow with one end portion of the track omitted to permit an enlarged ,view of the parts shown; Fig. 4, a longitudinal sectional elevation taken on line 4 of Fig. 1 looking in the direction of the arrow, showing the longitudinal bolster in longitudinalsection and the transverse bolsters each in cross-section; Fig. 5, a transverse sectional elevation taken on line 5 of Fig. 1 through the the pivoted forward and'rear arch-bars.

center of'one of the transverse bolstersyand Fig. 6, a sectional plan view taken on hne 6 0i Fig. 3, showing the spring-seats in detail with the springs-removed and a section of the bottom portion, of one of the transverse bolsters.

In constructing a car-truck in accordance with my improvements I provide three pairs of wheels (1, having axles I), each provided with journal por ions, preferably inside, of or between the whe ls. The truck-frame consists of flexible side frames suitably connected. Each side frame comprises a pair'of upper arch-bars c and lower arch-bars d, pivotally connected to the central journal be); or

frame portion e at the longitudinal center of the truck-frame by means of pivot-pins. f.

These central journal-boxes are free to rock upon their supporting-axle and form a piv oted link or articulate. connection between The opposite ends of each. pair of u per and lower arch-bars are secured to the out and rear journal-boxes and h, respectively, and held permanently in o by means of columnsi an headed bolts j, the lower ortion k of each of the end journal-boxes eing removably secured in position by means of such columns and bolts, and such journal-boxes bein thus held in o erative position between the arch-bars. ach of the central journal-boxes is also provided to the body portion of such journal-box by means of boltsm and nuts n, as shown in Fi 3, the main body portion of such jour-' naI-box being provided at the front and rear sides thereof with perforated lugs :0 for receiving the pivot-pins f, already described, and admitting the pivoted upper and lower arch-bars therebetween. The pins f may be secured in place by means of cotters p or in any ordinary and well-known manner, and

erative position with a removable bottom portion Z, secured all of the journal-boxes are of course pro. 4' vided with suitable bearings for the axlejournals, which bearingsmay be of any desiredknown type, and therefore need not be described in detail. By this arrangementit will be seen that each side frame consists of a pair of end portions pivotally connected to gether by means 0 a central oscillatin frame portion which also forms the centra journalbox, thus permitting the independent" vertical movement of each pair of wheels spring-seats t and between t between each pair of may be formed of an 'versely across the truck from side frame to Each of the bolster extend diagonally across the under side'of the truck-frame and are each secured at their opposite ends to the opposite side frames by means of bolts 1, which extend vertically through upright columns 8, such columns being arranged in op osite sides of e upper and lower arch-bars of each of the pivoted end portions of the side frames.

' An upper spring-seat w is slidably mounted columns 8 and suported upon suitable springs c, which are eld in operative position by means of upwardly-projecting studs w on the lower spring seats and downwardly projecting studs 0; on the upper spring-seats. Transverse bolsters y, having a central web portion 2 and lower flan e portions 2, which -beam, extend transside frame, one forward and the other rearward of the central pair of wheels and central pivotal portions of the side frames. of these transverse bolsters is mounted between a set of columns s and rests upon the springs v, alread described. The upper sprin -seats w, a ready described, are secure vto the transverse bolsters by means of bolts 3- 'and may be said to form a part of such bolsters.

. Suitable lugs 4 upon the transverse bolsters slidably engage o posite sides of the columns between whic such bolsters are mounted and ermit the vertical movement between such columns, at the same time securing the bolsters in position transversely of the truck.

Suitable side bearing portions 5 are provided upon the opposite ends of each of the transverse bolsters for preventing the undue tip ing of the car-body, and the ends of centra bolster portions z form depending end portions which extend vertically between the olstersupporting s rings.

In order to norma 1 support the weight of the car and to equa ize or distribute it as may be required, an equalizing longitudinal bolster 6, having a central bearing"? for supporting the wei ht of the car, is provided. This longitudinfi bolster is mounted withits opposite ends resting upon the center of the forward and rear transverse bolsters, respectively, suitable center bearing-plates 8 being provided for supporting the ends ofthe equalizing-bolster upon such transverse bolsters. Each of these bearing-plates 8 has a central or annular recess in its upper surface, as shown in Fig. 4, for admittin dependin projections 9 on the longitudinal olster, an

1n order to secure the longitudinal bolster and transverse bolsters togethe so as to per mit the desired amount of play and at the same time hold them securely in operative position a headed bolt 10 is mounted n a central perforation in each of the bearingplates 8, so as to extend upward beyond the upper face of such bearing-plate, forming a central stud upon each transverse bolster. The opposite ends of the longitudinal bolster are each provided with perforations 11 for receiving such upright bolts or pins, and a perforation 12 is also provided at each end of the longitudinal bolster directly over each perforation 11 for permitting the insertion of p a cotter-pin 13 into the upper end of the bolt or stud 10. By this arrangement the bolt or stud is not re uired to extend above the upf the longitudinal bolster, and the separation of the arts when desirable is per surface 0 rendered feasible, an the parts are held se curely in operative position, while at the same time permitting the desired amount of plig therebetween.

y the above arrangement it will be readily seen that the weight of the car restin upon the center of the lon itudinal or equa izing bolster is transferre to the front and rear transverse bolsters, which rest 11 on the springs,' and that such weight is yie dindgly' or supported upon the springs and equalize distributed u on all of the six wheels of the truck. It W1 1 also be seen that the pivotal connection between the opposite end portions of each side frame an the central jour nal-box permits the desired independent vertical movement of eachair of supporting-wheels and thatby thus p acin the trans- I verse bolsters and thesprin mechanism for yieldingly sup orting them etween the supporting-whee s a simple and efiicient cartruck is provided which; dispenses withthe necessity for mounting the springs directly over the axles or axle-bearings, as m the case of the ordinary pedestalat rucka I prefer tomount the side frames of the truck between the supporting-wheels rather than upon the outside thereof.

The central and front and rear side frame portions are so flexibly connected by the means above described that each side frame is sufficiently flexible both vertically and transversely to permit a limited transverse movement of the flexibly-connected portions and also the desired vertical movements thereof.

I claim 1. In a car-truck, the 'eombination'of a central journal-box section and end journalbox sections, an end journal-box section being pivotally connected to each end of the central journal-box section.

2. In a car-truck, the combination of a central journal-box section and end journalriedby the sections for supporting the carbody.

3. The combination a cartr'uck' of a central journal-box section and end journal box sections each having independent con-- nection with the central section, transverse bolsters mounted on each of the end sections, and a single longitudinal bolster connecting the transverse bolsters and supported thereporting the car-body.

The combination in a cartruck of a central journal-box section and end journalbox sections each having independent connection with the central section, transverse bolsters mounted on each of the end sections, asingle longitudinalbolsterconnecting the transverse bolsters and sup orted thereby, and means on the longitudinaFb olster for sup- 5. In a car-truck, the combination of side frames each having front and rear pivoted portions provided with bearings, a bolster mounted in the rear pivoted portions of such side frames, a bolster mounted in the forward portions of the side frames bolster mechan lsm mounted upon such forward and; rear bolsters for supporting the car-body, and.

means for connecting such side frames all ar-' ranged between the supporting-wheels of a car. ,I

6. Ina car-truck, the combination of side frames each having front and rear pivoted portions provided with bearings, a-bolster mounted in the rear portions of such side frames back of the pivotal points thereof, a bolster mounted in thejforward portions of the side frames forward of the pivotal points. thereof, spring mechanism for yieldingly supporting such bolsters, and an equalizingbol ster extending longitudinally of the ,truck and having its opposite end ortions mount' ed upon such front and rear olsters. 1

7. In a car-truck, the combination of s ide frames each having a central member 'provided-witha journal-box and havin front and rear side frame ortions pivotal y connected to such centra member, bearings for all of such front and rear pivoted portions, a transverse bolster mounted upon, the' rear pivoted ortions of such side frames, a trans verse bo ster mounted in the forward pivoted portions ofthe side frames, and'a single longitudinal bolster mounted uponsuch forward and rear transverse bolster 8. In a car-truck, the combination of side frames having front and rear, pivotedpOrfront andrear portions, transverse bolster mechanism mounted upon the front and rea pivoted portions of the side frames, an

equalizing bolster mechanism mounted upon such transverse bolster mechanism and sup-- ported thereby.

9. In a car-truck, the combinationof side frames each having a central journal-box and front and rear sideframe portions pivotally connected to such journal-born? jour-r nal-boxes mounted in such front and rear pivoted portions of the side frames, transverse bolsters mounted in the front and rear pivoted side frameportions respectively be-' tween the journal-boxes and ivotal points thereof, and an equalizing' bo stermounted upon the transverse bolsters.

10. In a car-truck, the combination of side frames each having a central journal-box and front and rear side frame portions pivotally connected to such journal-box, journahboxes mounted in such front and rear pivoted verse b0 sters mounted respectively in the front and rear pivoted side frame portions between the journal-boxes and pivotal points thereof, spring mechanism for yieldingly suporting such transverse bolsters, ,and' a ongitudinally-extending equalizing-bolster mounted u on such transverse bolsters-and rovidedwith a central bearing for supportmg the car-body. ll, Ina car-truck, the combination of intermediate front and rear su porting-wheels ortions ofv the side frames, trans-v arranged in pairs, an axle or each pair of. such wheels provided with journals between frames forward ofthe pivotal points thereof,

and an equalizing-bolster mounted upon such transverse bolsters.

12. In a car-truck, the combination of side frames each having a central frame portion provided with a journal-bezirin ,arch-bars pivotally secured to such centra frame portion extending forward and rearward therefrom provided with journal-bearings and forming pivoted frame portions, columns mounted in the pivoted frame portions formed by such arch-bars between the piv- .otal points thereof and the journal-bearings, transverse bolsters extending-between such columns and provided with means for slidably engaging the columns, s ring mechanism for supporting such bo sters, and an e ualizingbolster extending longitudinall o the truck and having its 0 posite end mounted upon such transverse olsters.

13. In a car-truck, the combination of side I 5 of such springs in each side frame.

frames, vertical compressible springs ar-" Witnes ses frames, vertically-compressible springs .on the spring, and 9. depending web on th 'mounted in the side frames and a transverse bolster extending across the truck bet'wee' bolster resting on and having a central dethe springs of each air. A l

pending web extending between a plurality Olncago, Illinois, ebruarg 4, 1905.

- SPENCER,

14. In a car-truck, the oombinationoof side ranged in pairs mounted on the side frames, I1 HARRY I.- CRO rl 1n, transverse bolstershaving their ends resting Annm QQQUBTENAYIY. 4

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