US817789A - Truck-bolster. - Google Patents

Description

PATENTBD APR.17, 1906.

2 SHEETS-SHEET 1.

.0. A. LINDSTRM.

TRUCK BoLsTER.

APPLICATION FILED DBU. 8. 1905.

WITHESSES No. 817,789. PATENTED APR. 17, 1906. G. A. LINDSTRM.

TRUCK BOLST'ER.

APPLIOATION FILED Dnc. s, 1905.

z SHEETS-SHEET 2.

- the car.

only e beam suppz'- the ends and loa-fA 'will be seen that the CHARLES A. tisnsrnon, or

. Penseel) einen on Conronii'rros NEW JllltS To all whom, 1,1: muy concer/rt:

Be it known that l, Uneniins L lnxn- 3 STR'Q'M, oflllegheny, Allegheny oountyglenn- Sylvania, have invented n new and useful i Truck-Bolster, of which the following is a l full, clearJ and exart description, reference l being had to the aoeom anying,r drawings, l arming part of this speci cation in whic'hl igure 1 is a plan view of a truck-bolster embodying my inven ti an.

llo. .2152 UIP (1l h the flllle altli/ lll inde elevetion and nsrtlv l in vertice section. Fig. a rvs -sertion on the line lll lli olA i, and l is en ,l

end view.

My invention relates to the built-up type, and is designed o provide an improved construction of tl i 'i member of the bolster i-.vlierein tile is distributed in accordance ie stresses which come u on such member. The eompressionrneni )er oi? truel--bolster is not teil (n the swing-seats et ,l the renter `over the centerplate, but it is else a beani supported at the' two ends by the troon-Columns and loaded at the center at its ed es, the latter lead being due to and reeeived pon the stopping of the car. Thee conditions require that the bolster should be strongest at 'the center, not only vertically, but also transversely, or in the direction er' the length oi" This object l attain by the A eouliar construction of the compression mem er now to be described.

ln the dravvings, 2 sion member of a bols from a flat sheet of steel conipressedsinto the shape of a channel liev'ng denending iianges 3 and so formed that et 'the middle portion g ll signetes the compres t Wlneli 1s :formed thelienges are relatively shallow and the web portion relatively wide, while at the end portions the flanges are deeper and the web nerrower. Thus by referenoe to the drawings it web portion to widen at each end where the side bearing-s and gradually increases in eonmienees at about the point re seeured thereto Width to the center, with a corresponding deereese in the l depth of the iinnges 3, l

5 designates the usual plato tension mem-' ber, whose end portions are riveted to the up- Wardlyfbent' portions of the compression member. 4 l 7 isl the center-plate support or strut 5 S,the l @pacification of Letters Patent.

:Patented April 17, i996.

ipplicetion le' December ,8, 1905. Serial ilo. 290.883.

center plate or bearing; Sl, the usunl'attarl'iment for 'the (lend-lever gnifleanclior ol' the broke-rigging, and l() the eltechment for the live-lever guide ol suoli rigging.

l1 1l are the usual end castings, and 12 represents the side-bearing supports or braces.

rlhe advantages of my invention result from the Construction rl" the compression nie'nber of the bolster from pressed steel in such a manner that this memberhns its greet-- est strength transversely et its central portion :ind greatest depth Q'ertiraily its ends, with its end iortions bent upwardly to receive the ten. :n member. This last-neined feature, es will beseen, ail'ords a secure oonneetion between the compression and tension members and osueli character as to be par ticulnrly adapted t) receive the thrust and strains to which these ports are subjected. Si) ling as these features of my invention are ,stained various rlninges mev be mede in the details oi construction en( arrangement without departing from the spirit end scope of roy invention. further advantage of my method of constructing the Compression y end lianges, togetner with the. upwardlyhent end portitns, een all be obtained by one operation, thus giving advantages of construction es well as of strength, Whereas when the Compression members are rolled the distribution ot material in this Ls nanner cannot be obtained and seperate operations are necessary to form the dill'orent ports of the tornu pression member.

lvhat l claim is l. ln e truuk-bolster, a pressed-steel Conim pression member of channel forni, having at its central izrtion a relatively wide web and relatively slizillfiw flanges, Lind et its end portions dee )or flanges and a narrower Web portion said end portions being bent'upwrirdly to receive e tension member substantially as doseribod.

increasingr width i'r center, vand l'lange portions ol depressing IOO depth from the ends 'Lmnud the, center the and portions of the. web boing beutupwmrdly; substantially as dcscl'ibcd.

4.1. In a truck-holster, a pressed-stesi compressiuii member o" chamie form, fumed ifrom a single pluie u sheet and having uit its @entrai poxtinn a i'elaitivey wide web and relativcy shzilmw Hangcs, und at its Gnd poi'- iims a lativeiy narrow web and deeper anges said and )ortions bein 'bent upwardly substantiaily as described.

5. A. Huck-bolster having ay pressed-steel s was@ compression member 0f channel foim, Wider at its center than at its ands, and having its Hangs portions of insreasing depth toward l die ends which are benty upwarly, sind a new sion member connected thereto; substantialy as described. i In testimony whereof I have hereunto set t' my hand.

CHARLES A. LNBSTR. l Nimessesz K. L. ROBINSON, B. FISHER.

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