US587886A - Truck-frame for railway-cars - Google Patents

Description

(No Model.)

2 Sheets8heet 18 A. S. VOGT.

TRUCK FRAME FOR RAILWAY CARS.

Patented Aug. 10, 1897.

(No Model.) 2 Sheets-Sheet 2.

- A S. VOGT.

TRUCK FRAME FOR RAILWAYOARS. No. 587,886. Patented Aug. 10,1897.

UNITED STATES PATENT OFFICE.

AXEL S. VOGT, OF ALTOONA, PENNSYLVANIA.

TRUCK-FRAM E FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 587,886, dated August 10, 1897. Application filed April 1, 1897. SarialKo. 630,2L1. (No model.)

To all whom it may concern:

Be it known that I,- AXEL Your, a subject of the King of Sweden and Norway, residing at Altoona, in the county of Blair and State of Pennsylvania, have invented a certain new and useful Improvcment'in Truck- Frames for Railway-Cars, of which .the fol lowing is a full, clear, and exact description.

This invention relates to that form of railway-car trucks commonly known as diamond trucks.

In diamond trucks as ordinarily constructed the arch-bars, which constitute parts of the side or side frames, are made of rolled bars of rectangular cross-section having their ends meeting above the journal-boxes, the arch-bars diverging midway, the upper archbar resting upon the transom and the lower arch-bar passed under the spring-plank, a pedestal tie-bar or box-stay of similar cross,- section extending from one pedestal to the other and these several bars being united centrally by vertical bolts and also being united at the pedestals or about the journalboxes by vertical bolts. faults incident to this structure. For exam.- ple, there-is ageneral lack of rigidity in a vertical plane because of insuflicient provision for uniting the arch-bars at the ends, the, main strain being thrown upon the bolts, and thus the principal of construction namely, a truss-being to that extent defeated. There is also a lack of rigidity in a horizontal plane,because the arch-bars on opposite sides of the truck are inadequately united to the transoms, the result being that the truck does not retain its original shapcthat is to say, it gets out of square-with the result that there is excessive wear of journals, journal-bearings, and wheel-flanges and oftentimes an excessive heating of the journalboxes. Furthermore, the structure lacks adaptability to varying conditions of track. For example, where the four points of con tact of the wheels with the rails are not in the same plane the strain is unevenly distributed. It is the object of my invention to avoid these and other faults which exist in the construction of the common diamond truck'franic.

In my invention the arch-bars in the preferred form are made of channel-bars of of square. side, frames 18 also of channel, form, and in There are some I mond truck, are of grad uall y-inci'easiug width fi om their outer ends "toward their centers, and they are riveted to the transom, thus ob,- taining an enormous increase of strength and of resistance to lateral distortion, so as to avoid the possibility of the truck getting out The transom which connects the orderto'increase its flexibility and thus to give to the truck structure the greatest possible chance to adapt itself to variations in the track-surface it has a large portion of its vertical webs removed at points where its presence is not necessary for strength. The

channel-beams of the transom have their ends boxedin, so'as to stiffen them and'thereby afford a support for the lower arch-bar.

The bolster consists, essentially, of two channel-shaped members of variable depth,

the webs standing vertically and the two channels being tied together, the greatest depth being at the centerand tapering thence to the ends, so, as to aiiord ample room for the reception of the springs, which springs are supported upon spring-hangers which depend from thetransom; The devices used for tying togethr the members of the bolster at their ends are themselves peculiar and require peculiar hanging of the bolster, having in view the necessity of meeting eccentric loads and for other purposes. 1

Having thus stated the principle of my invention, I will proceed now to describe the best mode in which I have contemplated applying that principle, and'then will particularly point out and distinctly claim the parts,

combinations, and improvements which I claim as myinvention.

In the accompanying drawings, illustrating --my invention, in the several figures of which like parts are similarly designated, Figure l is a half top plan view and horizontal section of half of t-he truck. Fig. 2 is a half elevation and vertical section of the same. is a section taken in the plane of line 3 3,

Fig. 3 7' I The outer-flanged extends in a substantially transom, it having Figs. 1 and2. Fig. 418 a half end view'and, Fig. 5 is a vertical section vertical section. of one end of the bolster, and Fig. 6 is a yertical section taken at the center of'the bolster wardly. These flanges extend longitudinally of the bar, :and there are also end flanges a}.-

straight line from end to end, while the inner flange a" is divided by the lateral extensions a, which projectto a considerable distanceinwardly in order to afiord the-largest possible contact-surface with the transom. Between the members of the transom the arch baris reduced in width, aszatafl in order to accommodate the bolster.

p The lower arch-bar b has the opposite side flanges 12', also extending downwardly, and this lowerxarch-bar is fitted within the side and end flan gcs of the upperarch-bar at their being'of substantially the depth of the flanges.

' The lower arch-bar is also widened out, so as increase of width at the to get the greatest the lateral extensions}; for this purpose.

fBy rigidly uniting the ends of the flanged arch-bars all tendencyof these :arch+ba'rs to slip or slide longitudinally upon one another is corrected, as is also their tendency to'lateral. displacement. w l

The transom is compos d of two channelbars d d, having their webs vertical and their flanges standing away from one another. These transom-channels are riveted -to the arch-bars and are provided with vertical embossments d for increasing their strength and rigidity between the arch-bars. These embossments perform all the functions of the ordinary vertical columns which are used between the top and bottom arch-bars of the common diamond truck. The ends of the transoms may beboxed in, as in Fig. 7, for a I purpose. presently' appearing.

The destal tie-bar or box-stay e is bolted to a fil ing piece or block j, which in turn is riveted to the lower arch'bar and to the flanges of the transom.

The spring-hangers g are rivet-ed or otherwise secured to the transom. a

The bolsteris composed of a pair of channel-beams h h, having their webs verticaland their flanges extending toward one another. The bolster is of greatest depth at its center in}- order to. meet the greatest strains, and its bottom tapers thence, preferably on curved lines, toward its ends, where it is of least cross-sectionalarea-that is to say, the bolster has a bellied conformation. Its ends are fiat, so as to receive the springs'or their caps or plates. Y Upon the upper flanges h" is riveted the center bearing-plate 2', of any approved construction, and also upon these upchannels h are bent upwardly from the a he str ng b t om flang h ar in- I .eted together and through the'said flan,

"midway 'wise movement, and said "pressed to shape, but do'not limit'my inte ncutaway,

enables the bolster to and imparts great stiffness, so as to within f are riveted or otherwise mm; in which are struck up the lower a The lower portions :of

r an tie-plates j, side bearings ter toward theends, and in order to-incresss creased in width and converge, as indicated in Fig. '2, toward the end, and I these flanges are united by an inner plate! and an outer plate I, both of which are rive so that these ends of the bolster are forced very stifily and thus enabled :to meet V;

the strains imposed upon them in use. v p a v ternal stay-pieces m n are also used,

between the ends of the bolster adjacent to the king-bolt, holes in orders.

reinforce the bolster at that point-- and 3 S equip the -bolster to sustain the load. The j be constructed with stay-piece 'n may (See Figs. 4 and 6.)

king-bolt hole 1:.

The ends of the bolster are'provided embossnients o to" abut against the .sp. I p hangers and prevent 'nnduelsteral or v ends are further provided with the inward projections ts: pass the inner rivets by which thessid 7 ughangers are secured to .the transom. I M In the manner described the side fram' i the transom, and the bolster-are adapted'tow meet, the ends of the invention hereinbefcss. 3 specified, and the structure ass wholeisqf. great strength and rigidity. l s As already indieated,'I, prefer to eonstrnql the parts of my invention of steel .tion to that material. g r

-In order to-impart'to the transom that flexibility necessary to enable the truck to, itself to variations. in the track-surface, said transom has a large portion of its asst. d?, Fig. "4, at points j such portions are not needed .for strength,- but where their absence may tend to enumr the flexibility of the'structure. H a As will be observed, the bolster is of V able depth, the greatestflepth being sti tlm. center or in the plane of the transom andtbtn; least at the ends, and the object of this struction is to provide suflicient room for springs without unduly increasing the height; of the truck. I The reinforcing of the bolsterat the meet eccentric loads stand the strains brought to bear upon it the springs upon which it rests. The inner reinforce Z is carried far enough in toward 18 the curved portionof thebottom-flanges-to; be riveted to that cnrvedportion and thm prevent any distortion of -,the flanges under eccentric loading. I 3 r '1 In using flanged pressed-steel arch-bars I may employ thinner material and yet obtain 1, equal, if not greater, strength than'is possi-- i blc by the. use of ordinary rolled bars of recl tangular cross-section. 4

at the j "shownas flanged and that is-the preferred. constrnctiongbeeanse it gives a wider beardurance and support.

. the side-frames.

transom.

zs'aese a By having the flanged ends of the archbars nested together and riveted'the surface contact is increased over the oldrolled archbars and all danger of wear and consequent loosening of the fastenings is avoided.

It will be understood that the joined ends of the arch-bars, the boX-stays;andthe jourrial-boxes are, united by the'o'rdinary vertical bolts, the holes therefor being shown in' Fig. 2.

The king-bolt hole 11. in the stay-piece n'is ing for the king-bolt and one of "greater-en- I have shown 'thejtransom-channels in Figs. 1, 2, 4, and 6 with-open ends'tbut in .Fig. 7 I- show the end boxed'im'as at-d This latter construction hasthe: advantage over the former in stifie'ning the-transom at its ends,

thereby, the better to -support;- .the bottom/ arch-bar. Under some conditions this bottom arch-bar might-have the downwardly-- projecting flange at its enter face exposed to danger of breaking under overs'training in case the car left the track '-or met with obstruction. of the transom might yield and throw considerable strainatthe lower edge of the flange of the arch-bar. The boxed-in end of the transom would efiectually correct this. boxed-in ends serve,

2. In a sideframe of the diamond type of truck, upper and lower arch-bars made as channels, with their'flanges projecting downwardly,'and their ends nested and riveted together, substantiallyas described.

3. In a'side frame of the diamond type of truck, the pressed-steel upper and lower archbars, increasing in width from their ends to-' ward their centers,their ends riveted together, and having intermediate, lateral'projections to which the transom is secured, substantially as described. a 1 p 4. In a side frame of the diamond type of truck, the pressed-steel upper and lower archbars, having downwardly-extending vertical flanges, ends riveted together, and intermediate lateral projections, combined with: a. channel transom, the flanges of which are riveted to the said arch-bars, substantially as described.

5. In a side frame of the diamond type "of truck, the separately-formed arch-bars, increasing in width vfrom their ends toward their centers, cut away In such event the bottom flange The essentially, as strut-s in receive the bolster, and having their ends riveted 1 together combined with a transom riveted to the said'arch-bars, substantially as described.

6. In a pressed :steel side frame for a tru'cl:

of the diamond type, the upper andlower] arch-bars, madeaschannels', and havingtheir ends riveted together and thus rigidly united 1 wholly independently of other parts of the v side frame, substantially as-ldescribed.

' 7. a sideframe of he diamond type of truck, thenpper and lower arch bars, made as ehannels',having their-ends nested'together, and rigidly 'united,-' and a filling-piece also rigidly securedin saidends, substantially as,

described.

8. In a pressed-steel-side frame .for'a truck of the diamond type,-- the 7 top and bottom arch-bars made as independent channels and rigidly united 'at their ends-by rivetingsueh ends together, combined with a transem'riveted to thesaid arch-bars, substantially as doe scribed.

9. The combination with the arch-bars, of a pair of channel barso'r beams, constituting the transom, and with which the arch-bars are united,having vertical embossments d between the -'archbars, substantially as and for: the purpose described.

10. A bolster, formed of pair anta. beams, the lower portions 01 which'd'ecjrease in depth toward, their ends, and whose flanges converge toward their ends, combinedwith inner and outer tie-plates riveted'to the said bottom flanges, the inner tie-plate extending over the bend of the flanges, substantially as and for the purpose described.

11. A side frame of the diamond type, com-3 posed, of flanged arch-bars having their ends rigidly united, abox-stay, anda filling-piece:

, nn it-ing the box-stay with the lower arch-bar,

and all formed of pressed steel, substantially as described. x

12. A truck-frame, composed of upper and in'gthei'r'ends nested and riveted together and thereby rigidly united, a transom composed of channels, and riveted tothe arch-bars, a box-stay and a filling-piece interposed between it and. the lower arch bar,.and all constructed of pressed steel, substantially as described.

13. A pressed-steel bolster, having its lower portion bellied, its ends of diminishedcrosssectional area, its bottom flanges convergent at the ends, and said ends reinforcedinternally and externallyby tie-plates, substantially as"desc'ribed-."- v

14. A truck-frame, composed 'of upper and lower arch-bars, formed as channels, and having their ends rigidly united, andprovided lower' arch-bars, formed as channels and hav-.-

with lateral projections 'next the transom, a

transom composed of channels and-rivetedto the arch-bars, a box-stay'and a filling-piece interposed between it and the lower arch-bar, I

and all constructed of pressed steel, substan at their centers to tially as described. r

15. Atransom, composed of channel-beams ln testimony whereof I hnve hei'ei'i-mleset. or ehannels having portions of their vex-tidal my hand this 26th day ofjHa -eh, A. D. 1897. webs removed, in order to increase the flexi- S T bility of the -transom and give to the truck i j,

5 structure the greatest possible change to \Vitnesses: Q adapt itself to variations in the track-s11 rface, CHAS. \V. KEPHART,

substantially as described.

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