US777721A - Body-bolster. - Google Patents

Description

PATENTED DEU. 20, 1904.

G. G. FLOYD.

BODY BDLSTEB..

APPLICATION FILED MAYla, 1904.

2 SHEETS-SHEET l.

N0 MODEL.

PATENTED DEC. 20, 1904.

` G. G. FLOYD.

BODY BOLSTER.

- APPLIOATION FILED MAY 18, P1904.

N0 MODEL 2 SHEETS-SHEET Z.

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T i f la.. .i

UNITED STATES Patented December 20, 1904.

PATENT OEEICE.

GEORGE G. FLOYD, OF ST. LOUIS, MISSOURI, ASSIGNOR TO AMERICAN STEEL FOUNDRIES, OF ST. LOUIS,-MISSOURI, A OORIJORATIOBVT OF MISSOURI.

BODY-BOLSTER.

SPECIFICATION forming part of Letters Patent No. 777,721, dated December 20, 1904. Application led May 18, 1904. Serial No. 208,582.

To all whom, it perry concern:

Be it known that I, GEORGE G. FLOYD, a citizen of the United States, residing in the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Body- Bolsters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a new and improved car-body bolster in which special provision is made for supporting the draft-sills and the body-sills without weakening the bolster at any point;` and to this end the invention comprises a cast-steel body-bolster, preferably in the form of a trussed I- beam, having an upwardly-extending reinforcing-swell at its middle portion to accommodate the draft-sill sockets and having lateral extensions of the top ange to provide bearing-plates of substantially uniform width for the body-sills.

The invention is illustrated in the accompanying drawings, in which- Figure l is an elevation, partly in section, of the underframing of a car, showing the mode of applying my improved body-bolster. Fig. 2 is a plan view of said body-bolster. Fig. 3 is a central section taken at right angles to Fig. 1. Fig. 4L is a plan view of the parts shown in Fig. 3.

Referring to the drawings, A represents a bodybolster for railway -cars, preferably formed as a cast-steel trussed I-beam, having an upper flange B, a lower flange B, and a connecting-web O. The upper flange B is provided with lateral extensions G G, which aEord bearings of substantially uniform width for the body-sills J, J and J2.

It has been customary to pass the draftsills through ,the body-bolster, and when the bolsters were formed as integral cast-steel structures the relatively large openings constituting the draft-sill bearings materially reduced the amount of metal in the cross-section of the bolster and correspondingly weakened said bolster af points where structural weakness was most dangerous-viz., in proximity to the center bearing F and the kingpost F. In order to provide suitable bearings for the draft-sills and still preserve suliicient metal in the cross-section of the bolster at the points where said sills penetrate the same, the bolster A is reinforced by an upwardlyextending swell D in its mid-length, which extension includes the web O and the upper flange B and is defined by two inclined portions B2 of said flange connecting an intermediate horizontal section B3, forming a seat for the center sills J 2.

Suitable openings F] in the reinforced midsection of said web C and ange B constitute the sockets or seats for the draft-sills I I. The sockets E E are reinforced at their lateral and lower edges by flanges E, the lower flanges lying well above the bottom ange B of the bolster, with the web C extending between and connecting said flanges B' and E. The lower flanges E are also extended beyond the face of the web C to a distance greater than the width of the flange B, and said flanges E are of substantially the same width as the portion B3 of the top flange, so that the bolts for securing the draft-sills in place may be readily passed through said flanges from below, while the bolster is in position, to permit the draft-sills to be applied or removed. It is to be noted that this mode of reinforcing the center of the bolster by the offset D and the sockets E by the bordering lianges E materially increases the strength of the bolster against the heavy transverse stresses applied at its middle. The lateral extensions G ofthe upper flange B are pierced with suitable holes, by means of which the sills are secured to the bolster, and it is to be observed that as these bolts are readily accessible from below the bolster may be removed or replaced with facility without disturbing the underframing of the car-body.

Having thus described my invention, what I claim isl. A cast-steel body-bolster having upper and lower flange and intermediate web portions, said bolster being reinforced by an upward swell in its mid length and provided with flanged sockets in said swell for the draftsills, the web portion extending between the flanged sockets and the lower flange.

2. A east-steel bolster, eomprisinga trussed I-beam, having a reinforcing upward swell in its middle portion, and provided with draftsill sockets in the reinforced portion thereof, said sockets having marginal anges projecting from the web and being independent of the bottom flange of the bolster.

3. A east-steel bolster-body, provided with a web having an upward swell midway of its length and with sockets in said swell for the draftsills, the web extending between the sockets, and being provided with a king-bolt socket the full height of the web.

4. A east-steel bolster comprising a trussed beam having upper and lower flange and intermediate web portions, having a reinforcing upward swell in the middle of said web portion, provided with draft-sill sockets in said reinforced portion, and lateral extensions on the upper ianges to provide bearings for the body-sills.

In testimony whereof I affix my signature in presence of two witnesses..

GEORGE G. FLOYD.

Witnesses:

G. F. PLEssE, Jr., H., S. MILLER.

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