US744225A - Truck-bolster for railway-cars. - Google Patents

Description

UNITED STATES Patented November 1'7, 1903.

PATENT OFFICE.

SPENCER OTIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONALv PATENT HOLDING COMPANY, OF RAPID CITY, SOUTH DAKOTA, AND CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA. I

TRUCK-BOLSTER FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 744,225, dated November 17, 1903.

Application filed January 3l, 1903. Serial No. 141.238. (No model.)

To all whom t may con/cern.-

Be it known that I, SPENCER OTIs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certainv new and useful Improvements in Truck-Bolsters for Railway-Cars, of which the following is a specification.

This invention relates to that class of mechanisms known as truck-,bolstersL-that is, bolsters which are adapted to be used in connection with the trucks of railway-cars for the purpose of supporting the body thereof in operative position, the details of which will more fully hereinafter appear.

The principal object of the invention is to provide a simple, economical, and efficient car truck-bolster.

A further object of the invention is to provide a simple, economical, and efficient truckbolster composed of a main body portion formed of structural metal and subsidiary members formed of compressed or cast malleable sections, all of which will more fully hereinafter appear.

The invention consists principally in a truck-bolster in which there are combined a body portion formed of wrought metal of substantially uniform cross-section, and a malleable upper cap or saddle section secured thereto and provided with a center bearing portion.

The invention consists, further, in a truckbolster in which there are combined a main body portion formed of a wrought-metal channeled beam, a malleable saddle portion secured thereto and straddling the top ange and provided with center and side bearings, and angular pieces secured to each side of each end of the body portion forming springpockets.

The invention consists, further and finally, in the features, combinations, and details of construction, and arrangement hereinafter described and claimed.

In the accompanying drawings, Figure l is *a side elevation of a truck-bolster as it appears When constructed in accordance with these improvements; Fig. 2, a plan view of the same; Fig. 3, an enlarged plan sectional detail taken on line 3 of Fig. l looking in the direction of the arrow; Fig. 4, an enlarged cross-section taken on lineV 4 of Fig. l looking in the direction of the arrow, and Fig. 5 an enlarged cross-section taken on line 5 of Fig. l looking in the direction of the arrow.

In the art to which this invention relates it is well known that it has long been desired to obtain a truck-bolster which can be made largely of structural iron having malleable portions either pressed or cast attached thereto, so that it will be as light as possible and yet have sufficient rigidity and strength to withstand the strains and stress incident to use and one which will be economical to manufacture and maintain. Y

The principal object of this invention therefore is to provide a bolster containing the above-named advantages, all of which will more fully hereinafter appear.

In constructing a bolster in accordance with these improvements I make a main or body portion and form it of'structural metal, preferably a double-channeled or steel I-beam, the web portion a of which is arranged in a vertical plane and the upper and lower flanges o and c in horizontal planes. This truck-bolster is made, as above stated, from a structuralsteel I-beam and is of the desired length and size in cross-section to withstand the stress and strains incident to ordinary use thereof.

To provide means by which the bolster may engage with the ordinary body-bolster (not shown) and support the car-body in position, I provide a cap or saddle portion d, which has a longitudinal groove in its lower surface in which the upper flange of the I-beam is inserted, sothat, as shown in Fig. 5, the cap or saddle straddles the I-beam and is partially held in position thereby. This cap or saddle portion when viewed in plan view is cambered from the center toward each end-that is, it is wider at the center than at each end. A multiplicity of rivets e are used to rigidly secure both the above-named parts together. The cap or saddle portion is provided with the ordinary center bearing f, which in turn may be provided with 'a center pin g or not,

as may seem desirable or necessary. desired, this center bearing may have an axial perforation 7L, in which a king-bolt may be passed down through the body-bolster. Each end of this cap or saddle portion is provided with the ordinary side bearings i of the desired size to engage with the center bearings on the lower portion of the body-bolster, and thus receive a portion of the load at such times as the car-body swings from side to side or is taking a curve.

To provide means by which the ends of the truck-bolster may engage with the ordinary springs and yieldingly hold the ends thereof in position, cast malleable -metal angular pieces k are provided, having pockets Z therein in which supporting-sprin gs may be placed to also yieldingly hold the parts in position. There are four of these angular pieces provided, two at each end of the bolster, and which are secured thereto by means of rivets m. The bolster itself is notched at n at each lower end, so as to remove the lower flange at such points and permit of the supportingsprings being operatively inserted in position. Further, each of these angular pieces or spring-pockets is provided with a groove p in itsouter face, which is adapted to engage with truck-columns by which the truck-bol- 3o-ster is held in position and guided in its movements, all of which is well known and understood by those skilled in the art.

I claim- 1. In a truck-bolster of the class described,

If it be l the combination of a wrought-metal body portion of substantially uniform cross-section, a malleable saddle portion secured to and straddling the top part of the body portion and provided with center and side bearings, and malleable angular pieces secured to each side of each end of the body portion forming springpockets, substantially as described.

2. In a truck-bolster of the class described, the combination of a main body portion formed of a wrought-metal channeled beam, a malleable saddle portion secured to and straddling the top ange thereof and provided with center and side bearings, and angular pieces secured to the flange and web portions at each end of the body portion and forming spring-pockets, substantially as described.

3. In a truck-bolster of the class described, the combination of a body portion ,formed of a wrou ght-metal I-beam notched at each lower end, a malleable saddle portion secured to and straddling the top iiange of the body portion and provided with integral center and side bearings, and malleable wrought-metal angular portions secured to the upper flange and web at each side of each end of the body portion and forming spring-pockets, substantially as described.

SPENCER oTIs.

Vitnesses:

THOMAS F. SHERIDAN, HARRY I. CROMER.

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