US726500A - Car truck and bolster. - Google Patents

Description

PATENTED APR. 28, 1903.

A. B. BELLOWS. CAR TRUCK AND BOLSTER.

APPLICATION FILED APR. 19, 1902.

4 SHEETS-SHEET 1.

NO MODEL.

. PATENTED APR. 28, 1903.

A. B. BELLOWS. GAR TRUCK AND BOLSTER. APPLICATION FILED APR.19, 1902.

4 SHEETS-SHEET 2 N0 MODEL.

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A. B, BELLOWS. CAR TRUCK AND BOLSTER.

APPLIOATION P11951) APR.19, 1902.

.4 SHEETS-SHEET 3.

NO MODEL.

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N0 MODEL.

INVENTOR UNITED STATES CFFICE.

ARTHUR B. BELLOWS, OF PITTSBURG, PENNSYLVANIA.

CAR TRUCK A'ND BOLSTER.

SPECIFICATION forming part of Letters Patent No. 726,500, dated A'prl 21, 1903.

Application filed April 19, 1902.

To @ZZ whom. t may concern:

Be it known that I, ARTHUR B. BELLows, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Car Truck and Bolster, of which the following is a full, clear, and exact description, reference being had to the accom panying drawings, forming part of this specification, in which Figure l is a top plan view of my improved truck-bolster in position. Fig. 2 is a front elevation of the same, partly in section. Fig. 3 is an end elevation of the truck with the bolster in place. Fig. 4 is a cross-section of the transom of Fig. 1; and Figs. 5, 6, 7, and 8 are lviews similar to Figs. 1, 2, 3, and 4, respectively, showinga modified form of the invention.

My invention relates to the trucks and truck-bolsters employed in railway-cars, and is designed to decrease the weight of the bolster and truck, -to arrange the bolsterso that all its supporting-springs will be under compression at all times, to provide improved side bearings, and to improve the general construction of the truck. l Referring to the form of Figs. 1, 2, 3, and 4, 2 represents the upper arch member, 3 the inverted arch member, and 4 the tie-bar, of an ordinary diamond truck. The transom is shown as formed of two parallel channels 5 with outwardly-directed iianges, and at the ends of the transom are secured upper and lower U-shaped plates 6 6, the bases of which are riveted to one of the arch-bars, while the ianges are riveted to the webs ofthe channels. The bolster, which in this form is shown as composed of two I-beams 7 7, with top and bottom connecting-plates 8 riveted to their flanges, is located at the central portion of transom andis shorter than the transom member, its ends terminating within the side bearings,` The ends of the bolster are guidedby angles 9, riveted to the inner faces of the transom-channel. The bolster rests upon springs 10, of which I have shown eight, in two sets of four each. Each set rests at the bottom upon a wooden filler-block 11 within an open-top box 12, preferably formed of a pressed-steel plate with a iiange extending around it. The side portions of the flanges are riveted through reinforcing angle-plates Serial No. 103,750. (No model.)

13 to the channel-webs, and a strengtheningplate 14 extends across the base of the trausom at its intermediate part and is riveted to the bottom channel-danges.

VThe center plate l5 is riveted to the upper plate 8 ofthe bolster. Straps 16 extend across the ends of the bolster and are bolted to the upper channel-anges, these straps serving bolster.

As the bolster is located at the center of the transom and extends only through its intermediate part, I provide yielding side bearings. I have shown these bearings as consisting of a lower pressedup box 17, with its end flanges riveted to the channel-webs. This box contains a wooden filler-block 18, upon which rest the springs 19. These springs at their upper end bear against the inner face of a pressed-steel member 2O of inverted-U shape, whose depending side tlanges 21 inclose the side iianges of the box 17 to guide the vertical movements. A casting 22 is fastened to the l(op of the member 2O and contains a ball-bearing 23.

In the use of the bolster the weight of the car is carried upon the springs 10, and when the car-body tilts the bolster will tilt slightly; but, all of its supporting-springs will still remain under compression. Under this condition one of the side bearings. will be depressed against the yielding spring-pressure. On level portions of the track the springs which support the bolster will be under' substantially equal pressure, and in its vertical movements it is guided by the brackets or angles 9.

In the form' of Figs. 5 to 8, inclusive, I show \a construction in many features similar to lthat of the form of Figs. 1 to 4, similar parts being designated by similar numerals with the prime-mark. ln this form, however, the bolster is made shallower by doing away with the I-beam portion of the body-bolster and providing an inverted-box structure 24, which forms the bolster-body. This box is preferably formed of a pressed shape or shapes with end anges 25 and side ianges 26. The center plate 15' is secured to the vcentral portion of the box. In this case I have shown the spring-supports 12 as at an intermediate level in the height of thebolster, while the as stops to limit the upward movement of the lower flanges of the channels arc connected by the plate 14. The action ofthis form is substantially the saine as that in the first form.

The advantages of my invention result from the considerable decrease in weight, owing to the short bolster, also from the constant compression of all the bolster-springs in any position of the car-body, and, further, from the yielding side bearings and simple and strong construction of the transom and bolster.

The bolster and side bearings may be applied to the carinstead of the truck, and many other variations may be made in the form and arrangement of' the truck, the transom, the bolster, side bearings, dac., Without departing from my invention. f

I claim- 1. A truck having a transom formed of laterally-separated members, a short stiff bolster located between said members and terminating between the side bearings, spring-supports secured rigidly between the transom side members, and springs thereon located beneath and supporting the short bolster; substantially as described.

2. A truck having a transom formed of laterally-separated side members, yielding side bearings, a short stii bolster located between the side members, spring-bearings secured rigidly beneath the bolster and between the side members, and `springs thereon supporting the bolster; substantially as described.

3. A truck having a transom with separated side members, a stift' bolster between the sido members and terminating between the side bearings, end guides for the bolster secured to the inner faces ot the side members, and bolster-supporting springs carried on supports secured to the side member; substantially as described.

4. A transom having separated side members, a stiff bolster shorter than the transom and located between its side members, a center plate carried on the bolster, spring-supports beneath thc bolster and secured rigidly between the side members, and springs thereon support-ing the stiff-bolster member; substantially as described.

5. A transom having intermediate flanged supports secured rigidly between its separated side members, springs resting on said supports, a short stii bolster resting on the springs, and end guides for the bolster, al1 said parts being located in the intermediate part of said transom and between its side members; substantially as described.

6. A transom having a strengthening-plate secured across the base portions of the separated transom members at their central portion, and bolster-springs carried on a rigid support secured above said plate and between the separated transom members; substantially as described.

7. Acar-truck havingspring-supported side bearings, guides therefor, a short central bolster With its ends between the side bearings, and spring-supports for the bolster secured rigidly to the transom said parts being placed between the separated webs of the side members of the transom; substantially as described.

8. A transom-'having separated flanged side members the iianges being reinforced; substantially as described.

9. A transom having separated flanged side members the flanges being reinforced by added flanged members, and a bolster between said side members; substantially as described.

` In testimony whereof I have hereunto set my hand.

ARTHUR I3. BELLOWS. lVitnesses: f

I-I. M. CoRwIN, GEO. B. BLEMING.

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