US427692A - Side bearing for car-bodies - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

L. K. JEWETT. SIDBBEARI'NG FOR OAR BODIES.

No. 427,692. Patented May 13, 1890.

.IHIIHIIHI (No Model.) 2 SheetsSheet 2.

LJ K. JEWETT. SIDE BEARING FOR GAR BODIES.

No. 427,692. Patented May 13, 1890'.

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UNITED STATES PATENT OFFICE.

LUTHER K. JElVETT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE J EWVETT SUPPLY COMPANY, OF PORTLAND, MAINE.

SIDE BEARING FOE SAW-BODIES.

SPECIFICATION forming part of Letters Patent No. 427,692, dated May 13, 1890.

Application filed September 6, 1889. Serial No. 323,145. (No model.)

To all whom it may concern.-

Be it known that I, LUTHER K. JEWETT, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Side Bearings for OarBoclies, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to anti-friction supports or side bearings for car-bodies, and is an improvement upon the anti-friction support shown and described in another application, Serial No. 3l6,027, filed by me June 29, 1889.

My present invention has for its object to improve the construction of the anti'friction supports, as will be described, whereby the side oscillation of the car-body may be compensated for without inflicting strain upon the snpporting-springs for the anti-friction device.

Another feature of my invention consists in providing means, as will be described, by which the endthrust is relieved from the said springs.

My invention therefore consists, essentially, in the combination, with a car-body and its truck, of one or more side sustaining-springs independent of the car-truck and interposed between the said truck and ear-body, a firm support for said springs, and a cap or seat for said springs, provided with a semicircular groove, and a cylindrical body fitted into said groove to permit the said cap to rock without lateral motion, substantially a's will be described.

Other features of my invention will be pointed out in the claims at the end of this specification.

Figure 1 is a side elevation of a sufficient portion of a car body and its car-trucktprovided with my improved anti-friction support or side bearing to enable my invention to be understood; Fig. 2, a transverse section of the car-truck on line w 00, Fig. 1, looking toward the left; Fig. 3, a sectional detail to be referred to the section being taken on line 51; to, Fig. 1; Figs. 4 and 5, details to be referred to, and Fig. 6 a modification to be referred to.

The car-truck A, which maybe of any usual or well-known construction, the chair a, secured, as by bolts ct, to the side frames a of the car-truck and provided, as shown, with the toe a adapted to shoulder on the equaliZer-bar a, may be substantially such as shown and described in the application referred to.

The chair a has secured to or forming part of it abase-plate I), (see Fig. 3,) provided with a preferably semicircular groove or depression Z7, into which is fitted or rests a cylindrical or circular body, preferably a rod or bar b upon the upper half of which is fitted or depression, into which is fitted a cylindrical or circular body, preferably abar or roller b having fitted upon it the base-plate (1 of my improved anti-friction device, which is substantially the same as shown and described in the application referred to, it consisting of rollers 0, provided with arbors 0, upon which are supported a spacing-frame 0 the arbor of the center roller 0 being provided with a pinion in mesh with teeth 0 on the base-plate and with like teeth 0 on the top plate c", secured to the ear-body.

The base-plate Z) is firmly secured to or forms part of the chair a, and as the car-body A oscillates or sways sidewise the graduatingsprings b are relieved from side strain by the rocking or pivotal movement of the springseat Z1 on the roller b and the baseplate Z2 on the roller b.

To relieve the springs I) from strain caused by the forward or backward movement of the car-body with relation to the car-truck,

fitted Within and locked by the uprights d (1, so that when either the car-body or the truck is moved endwise With relation one to the other the spring-seat b and the top plate 12 practically form one casting or piece and transmit the end-thrust to the friction-rollers 0, thus relieving the graduating-springs b from strain.

I have herein shown and described the base-plate b as secured to or forming part of the chair; but in somekinds of trucks-as, for instance, in the Well-known \Vagner sixwheel truckthe base-plate b may be secured to or form part of the housing c (see Fig. 6) for the center wheels of the truck, and in this case the housing 0 forms a firm support for the anti-friction device.

I have herein shown spiral springs; but instead thereof elliptical springs maybe used.

I have specifically described the side bearing-springs as used to support the anti-friction device, and While in most cases the two parts will be used together, I do not desire to limit my present invention in this respect, as the rocking cap and seat may be used to advantage When the springs rest on a firm support, such as described, and the base-plate b is secured to or forms part of the car-body. I prefer to rock both the cap and seat for the said springs, as by this means all the strain caused by the side oscillation of the car is relieved from the said springs; but, if desired,

only one part, as the cap, may be made to rock, and the other part, as the seat, may be made stationary. In this case the upper part of the springs Would be relieved from strain.

I am aware that a car-truck has been constructed in which the springs supporting the bolster have been provided Witha cap having a shallow groove in Which rests a cylindrical body secured to the bolster. In this construction the cap is free to oscillate or slide laterally 0n the said cylindrical body. construction is impracticable for my purpose.

I claim 1. The combination, with a car-body and its truck, of one or more side sustainingsprings independent of the car-truck and iiiterposed between the said truck and carbody, a firm support for said springs, and a rocking cap or seat for said springs, provided with a semicircular groove, and a roller fitted into said groove to permit the said cap to rock Without lateral motion, substantially as described.

2. The combination, with a car-body and its truck, of an anti-friction device, substantially as described, a firm support for said anti-friction device, one or more springs to support said anti-friction device, and a rocking cap or seat for said springs, substantially as described.

3. The combination, with a car-body and its truck, of one or more side sustaining springs, a firm support for said springs, and a rocking cap or seat, and means to lock said spring-cap Within the spring-seat, whereby the said springs are relieved from strain by end-thrusts, substantially as described.

In testimony whereof Lhave signed my name to this specification in the presence of two subscribing Witnesses.

LUTHER K. JEWET'J.

Witnesses:

.lAS. H. CHURCHILL, E. J. BENNETT.

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