US784839A - Brake-beam. - Google Patents

Description

" No. 784,839. PATENTED MAR. 14, 1905.

S. A. CRONE.

BRAKE BEAM.

APPLICATION FILED OCT. 1., 1904.

INVENTOR SeZYwZ Crone I ATTORNEY Patented March 14:, 1905.

PATENT OFFICE,

SETH A. CRONE, OF NEIV YORK, N. Y.

BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent No. 784,839, dated March 14, 1905. Application filed October 1, 1904. Serial No. 226,790.

To all 1.0700712, it may concern:

Be it known that I, SETH A. CRoNE, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Brake-Beams, of which the following is a specification.

The invention relates to improvements in brake-beams for railway-cars; and it consists in the features of construction hereinafter described, and particularly pointed out in the claims.

Brake-beams'of the class to which my invention pertains comprise a rolled body-beam of suitable length, brake-heads of standard construction on the ends thereof, and a fulcrum for the brakelever; and my invention has for its object to produce a novel fulcrum for use in such beams, said fulcrum being of forged metal bent to the required shape and .adapted to be firmly riveted or bolted to the body-beam.

Forged-metal fulcrums of the class to which my invention pertains are shown and claimed in Letters Patent of the United States numbered,respectively,720, 676 and 720, 677,grant ed to me on February 17, 1903, and No. 731,668, granted to me on June 23, 1903.

The present invention is confined to a special construction in cross-section of the sides of'the fulcrum adjacent to the flange of the bod y-beam, these sides at their outer diagonally opposite edges in said location being thicker than said sides at their other or inner diagonally opposite edges, where the metal of said sides curves inwardly within the plane of the said flange for the purpose of enabling the sides of the fulcrum to stand at an angle of about forty degrees to the perpendicular, the result being that the fulcrum sides possess a maximum degree of strength in those portions thereof called upon to offer the greatest resistance.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which- Figure 1 is an edge view of a fulcrum constructed in accordance with and embodying my invention, the fulcrum being shown as secured to a usual body-beam, the latter being in section on the dotted line 1 1 of Fig. 2. Fig. 2 is a side elevation, partly broken away, of a brake-beam equipped with the fulcrum embracing my invention. Fig. 3 is a detached perspective view of the fulcrum. Fig. 4 is a transverse section of same on the dotted line 4 4 of Fig. 2. Fig. 5 is a transverse section of same on the dotted line 5 5 of Fig. 1, and Fig. 6 is an enlarged edge view showing diagrammatically the outline of a portion of one of the thick diagonally opposite edges of the fulcrum sides.

In the drawings, 10 designates a portion of the usual body-beam, and 11 the fulcrum of my invention, which is applied centrally on one edge of the beam, the latter preferably being of commercial I shape. The fulcrum 11 may be in either one or two pieces of forged metal, as shown and described in the aforesaid Letters Patent, and comprises in any event two sides 14 15, having at their inner ends the flanges 16, 17, and 18, while intermediate the flanges 18 and the outer end of the fulcrum the said sides are apertured, as at 19, to receive the brake-lever pin in a customary well-known manner. The sides let 15 are of forged metal, and said sides may both be formed from one bar, as in making a one-piece fulcrum, or from two bars, as in the manufacture of a two-piece fulcrum, bothforms of fulcrum being well known and disclosed in the aforesaid Letters Patent No. 731,668.

The novel features sought to be protected hereby consist in the formation in cross-scetion of those portions of the sides I L 15 comprised in or adjacent to the flanges 17 18, this cross sectional formation. being illustrated more definitely in Figs. 3,4, 5, and 6, in which it will be seen that at the outer diagonally opposite edges 20 20 of the sides 14: 15, the metal of said sides is perceptibly thicker than the metal at the other or inner diagonally opposite edges 21 21 of said sides. The flanges 18 are somewhat of triangular form and curve inwardly within the horizontal plane of the flange of the beam 10, and along this inwardly-turned portion of the flanges 18 the metal is thinner than it is at the outer edges 20 20 of the said flanges, where the metal does not materially turn under or within the horizontal plane of the I-beam flange. The flanges 18 by turning inwardly on substantially triangular lines enables the setting of the fulcrum sides at an angle of about forty degrees to the perpendicular, which is the proper setting that they should have to receive the brake-lever, and when the fulcrum isin use the direct outward strain is more directly taken by the diagonally opposite portions 20 of said flanges 18, because said portions have not the inward curves, but more nearly extend di.- rectly outwardly from the edges of the bodybeam flange, said portions 20 not necessarily being absolutely straight, but not possessing the pronounced inward curves represented by the other diagonally opposite portions 21 21 of the flanges 18. The said diagonally opposite portions 20 20 are therefore of increased thickness, commencing from about the point 22 and extending to about the point 23, and a cross-section of the sides 14 15 through said flanges 18 would represent the metal as gradually tapering in thickness from the edge portions 20 to the other diagonally opposite edge portions 21, as shown in Fig. 5. By reason of this construction the effective resisting strength of the fulcrum sides when under the tension exerted against them by the brakelevcr may be as great on a transverse line through the flanges 18 as it is on a transverse line through the brakelever-pin holes 15). WVhen the metal in the fulcrum sides is given the triangular form represented by the flanges 18, an outward pull directed against the broader side edges of said flanges would tend to straighten the flanges out; but with the thickened portions 20, provided at diagonally opposite points and at the straighter edges of the fulcrum sides, the fulcrum is enabled without excessive weight of metal therein to efli ciently resist the action of the brake-lever, and consequently the availability and efliciency of the fulcrum as a whole may be relied upon. The thicker portions of the fulcrum sides adjacent to the flanges 17 18 are therefore loc: ted. at the straighter edges of said sides and at diagonally opposite points, while the thin portions of the fulcrum sides adjacent to said flanges'are also at diagonally opposite points, but at the inward bends of the said flanges 18. The features sought to be protected hereby consist, therefore, in having the metal along the diagonally opposite portions 20 of greater thickness than the metal along diagonally opposite portions 21 and preferably in having the metal gradually taper from said portions 20 toward said portions 21, and this feature of the structure is of course equally applicable to a one-piece or a two-piece forged-metal fulcrum of the class to which my invention pertains. The thickening of the metal along the diagonally opposite portions 20 of the fulcrum sides may be produced by upsetting or otherwise, and the thinness of the metal along the inner diagonally opposite portions 21 is produced by stretching the metal in the formation of or preparatory to the formation of said flanges 18.

The fulcrum shown is made from aforgedmetal bar of initially uniform Width and thickness, and hence the outer diagonally opposite portions 20 of the fulcrum sides are thicker than the remaining portions of the bar, and the inner diagonally opposite portions 21 are thinner than the remaining portions of the bar, and the increased thickness of the said portions 20 compensates for the decreased thickness of the portions 21.

hat I claim as my invention, and desire to secure by Letters Patent, is

1. The forged-metal brake-beam fulcrum comprising the angnlarly-disposed sides having at their inner ends the flanges 17, 18, with means for securing said sides to the bodybeam, said flanges 18 being of substantially triangular shape and the metal in said sides about said flanges 18 being thicker at the outer diagonally opposite portions 20 than at the inner diagonally opposite portions 21; substantiall y as set forth.

2. The forged-metal brake-beam fulcrum comprising the angularly-disposed sides having at their inner ends the flanges 17, 18, With means for securing said sides to the body beam, said flanges 18 being of substantially triangular shape and the metal in said sides about said flanges 18 being thicker at the outer diagonally opposite portions 20 than at the inner diagonally opposite portions 21, and gradually tapering from the edges of said portions 20 to the edges of said portions 21; substantially as set forth.

3. The forged-metal brake-beam fulcrum comprising the angularly-disposed sides having at their inner ends the flanges 16, 17 and 18, said flanges 18 being of substantially triangular shape and the metal in said sides about said flanges 18 being thicker atthe outer diagonally opposite portions 20 than at the other portions of said sides, and the metal at the inner diagonally opposite portions 21 about said flanges 18 being thinner than the metal in the remaining portions of said sides; substantially asset forth.

Signed at New York, in the county of New York and Stateof New York, this 30th day of September, A. D. 1904:.

SETH A. ORONE.

Witnesses:

Ci-iAs. (J. GILL, ARTHUR MARION ICC

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