US868909A - Brake-beam for railway-cars. - Google Patents

Description

N0. 868,909. PATENTED 0013.22, 1907. S. A. GRONE.

BRAKE BEAM FOR RAILWAY CARS. APPLICATION FILED mm. 9. 1907.

WITH/E5858:

--14TT0RNEY UNITED PATEN T ()FFIQE. sn'rn A. or NEWZIORK, N. Y. i

BRAKE-BEAM FOR RAILWAY-CARS.

No. 888,909. Specification of Letters Patent. Patented Oct. 22, 1907. Application filed March 9, 1907. Serial No. 361,481. To olllwhom. it may concern: The body-beam 10 is preferably, though not necesllo it known that l, S'nrn A. CRONE, a citizen of the sarily in all instances, of I-form, having a web 14, a United States. and a resident of New York city, in the tension flangemember l5 and a county of ow York and State of New York, have inmember 16, and by preference the said tension and lit) vented certain new and useful Improvements in Brakecompression members will be equal in width across Beams for Railway-Cars, of which the following is a their outer faces. specification. The drawing represents, as an illustration, a six and The invention relates to improvements in brakeone-half inch beam having fourinchflanges, which are beams for railwi'ty'mars, and consists in the novel feastraight and parallel with each other. 65 lures hereinafter described and particularly pointed The body-beam 10 is novel in that the compression out in the clainm. member 16 has applied in it a sufficient quantity of My invention pertains more especially to the class metal in excess of that contained in the tensionmemof brake-beams comprisinga rolled flanged body-heam, her to locate the neutral axis of the beam section a brake-head applied on each end thereof and a fnlnearer the compression than the tension member and 70 15 crum secured at. the central portion of and projecting secure an equalization of strength in said members, from the body-hon m to receive the usual brake-lever. that is to attain in the compression member the same and my invention resides in an improved body-heron to which the ln'akwhoadsand fulcrum may be secured.

'lhe body bcams as heretofore constructed have not 20 in many insianccs been efficient or reliable in that under the load applied at'tllo fulcrum the compression iuc nber thereof was liable to and oitcn'dirl buckle or take aside twist and the beam became pcrnuinently set instead of springing hack to its proper initial condilion. v 4

The purpose of my invention is to provide a bodyheain adapted to thc limited space allowed for brakeheams in regular service and to adequately resist all tendency l buckle or'take a permanent deflection undcr any load likely to be exerted against it, and in carrying out my invention I provide a body-beam capable of withstanding several times the load ever likely to be applied to it and attain this result by imparting lothe compression mcmber the same or approximately the same strength in compression as the tension member has in tension. In the accomplishment of the purposes of my invention I so construct the beam-sec? tion that the neutral axis thereof is removed outwardly I beyond the center oi the section or toward the com- 40. prcssion member, my object being to. locate said new the tension member has in tension. he transfer of tion outwardly toward 7.5 the compression member enables me to have the outermost fibers of metal in the tension member as far as conveniently possible from said axis. The result of the construction presented is that the entire beam section is greatly increased in that strength required for a brake-beam and rendered capable of properly resisting a far greater pull, at'the iulcrum, without buckling or taking a permanent deflection than the limits of safety require. The matter of equalizing as nearly as may be the strength in the compression and tension members, that sion as the tension flange has in tension, is of importance, aside from gaining efficiency, in that thereby no dead weight oi metal is carried and the cost of pr0duction is reduced.

I do not limit the invention to the presence of flanges of equal width on the beam but preferably said flanges will be so constructs tral axis as far as conveniently possible from the outer- What I claim as my invention and desire to secure most. fibers of metal in the tension member, wherebx by Letters-Patent, isrthe whole section becomes Of greater-strength and elfi- 1. In a hrakebeain, a rolled body-beam having parallel ciency and capable of mgistingthe v r erf l p n integral flanges on its edges, one of said flanges constitut- 45 d against i in Servicethrou h the fulcrum in; a compression member and the other a tens on member,

b g brake-heads on the ends of said beam, and a fulcrum se- Hw Wlu bamny understood from the curcd r0 said heum, said flange constituting the comprcsta led description hereinafter presented, refe ence Sim] member being thicker and containing Silil'lCiLlrtly being had to the accompanying drawing, in'wh ich; more metal than the lltllllgt fEOIISfHl'IIIilITIg the tepisfou mem- 1()5 1 her to locate the ncutrn axis o t io ream sec on nearer I l i H i a brake beam embdyl g said compression than the tension member and to impart 00 my inv ntion, and Fig. .4 is an enlarged transvcl o said compression 7 mcmhcr approximately the same t ough MD/ a 0n the dotted llfle strength in compression as the tension member has in of Fig. l. tension; substantially as set forth.

' i 1 z r ,a l:vl g mrnllol in the drawings, l0dcsignatesthe rolled bodybeam, make bod-l m n l t 9 integral flanges on its edges, one of said flanges constilut- I 1 H10 hmkwhmds on we ends thereof and the [U1- lng a compression member and the other a tension mcmhor.

55 cruln applictl to the central portion of said body-beam q w awn-W1 10 w a 9f m 11mm, and n -l UH customary location and manner. erum riveted to said henm, said flange which constitite the compression member containing sufliciuntly more metal than the flange constituting the tension member to locate the neutral axis of the beam section nearer .s'aitl compression than the tension member anti to impart to -said eompression member appruximatetv the same srrengt h in compression as the tension member has in tensinn; substantially as set forth.

3. In a brakuhenm. a rolled burly-l eam, brake-heath; on the ends thereof and a fulerum secured to said lmdyheain, said-body-beatn being of I-f orm in -set:ti0n and havingits neutral axis nearer the comprexxion than the teimion member to attain in the eumpre on member approximately the same strength in compression as the tenxiun member has in tension; substantially as set l'urtlt 4. In a brake-beam, :1 rolled hotlylm'un, brake-heads on l l l l l l l i l the t1l(l S thereof and a fulcrum seeurod to said ilottv-healn, said hotly-beam being of I-t'orm in cross-section and having sut'lieient metal applied in ihe COIillll'L silm member to lorate the neutral axis of the heath section nearer said eompreh an than the tension memher and attain in the eoinpr on member approximately the same strength in E-ompi ston as the tension memller imam tension; suly stantially as set forth.

Signed at New York city, in the county of New York and State of New York, this 8th (lay of March A. ll. lllllT.

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