US999253A - Car construction. - Google Patents

Description

H. M. PPLAGBR. GAR CONSTRUCTION.

APPLIOATIONIILED y13110.16, 1910.

Patented Allg- 1, 1911.

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CAR CONSTRUCTION. APPLIOATION FILED 1320.16, 1910.

Patented Aug. 1, 1911.

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sra'rns CAR CONSTRUCTION.

Specification of Letters Patent.

Patented and. '1, 1911.

Application led'lDecember 16, 1910. Serial No. 597,669.

To all whom 'it may' concern. l Be it known that I, HARRY M. PFLAGER, a citizen of the United Sta-tes, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Car Construcvtion, of which the following is a full, clear, and exact description', such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is atop plan view of a part of the -underframe of my improved car construction. F ig. 2 is a side elevation of my improved car construction, with parts thereof in vertical section. Fig. 3 is an enlarged cross section taken on the line 3-3 of Fig. 2. Fig. 4 is a side elevation, p-artly in secl tion, of a" modified form of my improved 20 I construction. l This invention relates generally to car construction, and more particularly tothe car wheels and axles and the means for mounting the same beneath the ends of the underframe or car body.

The principal objects of my invention are to construct a car whereinv the expensive, heavy, swiveled trucks are done away with, thereby materially reducing the first cost of building the car, the cost of maintenance and the dead weight of the car, and further, to produce a car that will readily traverse short curves and pass over switches and crossings Without creating undue friction between the flanges of the car wheels and the track rails.v

A further object of my invention is t-o arrange two pairs of wheels beneath each end of theT car body and to' locate the wheels of each pair very close to one another, thereby producing an extremely narrow wheel base, one pair I'of which Wheels is devoid of the usual flanges in order to entirely obviate all resistance) and consequent friction while the car'is traversing a sharp curve.

To the above purposes, my invention consists in certain novel features of construction and arrangement of parts hereinafter more fully described and claimed.

Referring by numerals to the accompanying drawings, 1 designates the side sills of a l car underframe, 2 the intermediate sills, 3' the cross bearers, 4 the body bolster, and 5 the draw bar, all of these parts being of ordinary construction.

6 designate pedestals arranged in pairs,

short side frame formed by the pairs of pedestals. The ends of the car axles 10 are Journaled in the boxes 7 in the' usual manner, and carried by the inner one of the car axles -isa pair of ordinary flanged car wheels 11.

The wheels l2 carried by the outer axle are devoid of the usual flanges, and thus when -a car of my improved construction is traversing a short curve, the inner pair of wheels at each end act as pivots for the ends of the car-while the outer pair of wheels, which are bald 'or iangeless, shift laterally upon the balls of the'track rails without developing resistance or friction. The outer wheels could, however, be flanged and the inner wheels ina'de flangeless, if desired, the result being substantially the same.

In Fig. 4 I have shown the pedestals. formed in pairs and each pair is individually fixed to the under side of the underframe. In all instances, the pairs of pedestals are arranged as closely together as 'is practicable so as to shorten up the wheel base or the distance from center to center of the axles. By utilizing avpair of wheels without flanges on the outer axles, the car can traverse curves having an extremely short radius, and the only friction or resistance de veloped between the wheels of the trucks andthe track rails occurs between the flanged pair of wheels which are 'acting asv pivots for the ends of the car.

By my improved construction, a considerable saving effected in the first cost ofY building cars and in repairs thereto, inasmuch as a large number of parts which are essential in swiveled truck construction are `entirely done away with. A very Strong and there are no side bearings required. The

l danger' of derailment of Wheels of my improved construction in traversing curves is small as compared to ordinary swiveled trucks having long wheel bases, for where cars are equipped with swiveled trucks of ordinary 'construction and the car is taking -a short curve, derailment is practically a 'existing in this country, Where it is desirable to carry great loads and bulk in cars, and it is still desirable to further increase the car- 'rying capacity of the cars.

It will be readily understood that minor changes may be made in the construction, arrangement and combination of the various parts of my improved car construction, without departing from the nature and principle of my invention.

I/ claim:

1. In car construction, the combination with an underframe, of two pairs of Wheels under each end of the car, t-he wheels at each end being arranged closely together and having 'narrow wheel bases, which wheels are so-mounted as to be horizontally immovable with respect to the under frame, the

` outer pair of each set of wheels being devoid of flanges.

2. In car construction, the combination with an underframe, of two pairs of wheels arranged under each end of the car, the outer pair of each set of wheels being devoid of flanges.

flanged Wheels `on the inner axlel of each Y pair, and flangeless wheels on the outer axle.

of each pair.

4. In car construction, the combination with an underframe, of short side frames rigidly fixed to and de ending from the under side fthe under ame at each end thereof, journal boxes yieldingly arranged in the side frames, apair of axles having their ends journaled in the boxes, a pair of flanged wheels on one of the axles of each pair, and a pair of flangeless wheels on the other axle of each pair.

'- 5. In car construction, the combination of an under frame, side ,truck frames rigidly fastened thereto, each of said side truck frames having two journal box openings, journal boxes guided vertically in sald openings and semi-elliptic leaf springs bearing at their centers against the under frame and at each end upon the journal boxes.

6. In car construction the combination of an underframe, two pairs of journal box guides rigidly fastened thereto at each end of the car and providing transversely alined journal box openings, journal boxes guided vertically in said openings, and semielliptic leaf springs bearing at their centers against the underframe and at each end on said journal boxes.

In testimony whereof I hereunto affix my signature in the presence of two witnesses, thi's 14th day of December, 1910. HARRY M. PFLAGER.

Witnesses:

M. P. SMITH, B. S. REID.

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