US820338A - Car-truck bolster. - Google Patents

Description

Mm M W 2 SHEETS-SHEET 1- PATENTED MAY 8, 1906. t

3 fW//Vf'a :lv

J. B. BARNES.

UAR TRUCK BOLSTER.

APPLIOATION FILED 1113.1. 190e. L5

f I. P l flllmml I" Il IUE |IIIIIIIIIII ,i 'I 1f IIIIIIIIIII Inm -yw Ill WZ 2955935 PATENTBD MAY 8, 1906.

J. B. BARNES. OAR TRUCK BOLSTER.

APPLICATION FILED rnB.1,19oe.

` UNITED STATES PATENT oEEIoE. y,

JOSHUA s.v BARNES, or SPRINGFIELD, 1LLINo1S, Y

CAB-TRUCK BoLsTEn.

Specication of Letters Patent.l

l Application filed February 1, 1906. SerialNo. 299,002.

citizen of the United States, "residing atk Springfield, in theccounty of Sangamon and State of Illinois, have invented a new andl useful Improvement in Car- Truck Bolsters, of which thefollowingis a Specification. y

My invention relates to an improvement in that class of car-truck bolster which is ordinarily composed of cast-steel integral through out, and has for its object to reduce weightand obtain a strong, rigid, and durable bolster.

The invention consists in features of novelty, as hereinafter described and claimed., reference being had lto the accompanying drawings, forming part of this specification, whereon- Figure 1 is a top plan view of a preferable construction of my improved car-truck bol- Ster; Fig. 2, a side elevation thereof; Fig. 3,

, an end view of the same; Figs. 4 and 5, vertical transverse sections through the olster on lines 4 4 and 5 5, respectively, in igs. 1 and 2; Figs. 6, 7, and 8, corresponding views to Figs. 1, 2, and 3 of a modified form of the bolster; and Figs. 9 and 10, cross-sections thereof on lines 9 9 and 10 10, respectively, in Figs. 6 and 7.

Like letters and numerals of reference denote like parts in the respective figures.

Referring to Figs. 1 to 5, a represents my improved truck-bolster, having its body b,

with'the center plate 1, side bearings 2, and

truck-column guide-lugs 3, composed, preferably, of cast-steel integral throu hout. The

mido'le portion 4 of the body b etween the side bearings 2 is practically T-shaped in crosssection, having its top flanges 5 at right angles to the web 6 and united thereto for its entire depth by upright ribs 7, which are arranged transversely to the body b at suitable intervals along the middle portion 4, thel two middle ribs 7 being preferably located beneath the center plate 1, one on each side of and at an equal distance from its center. Transversely through the web 6 between the middleI ribs 7 and lmmediately beneath the center plate 1 is an opening 8 for the lower projecting end of the king-bolt, (not shoWn,) which passes through the" center Vplate 1 thereat. The web 6 1s formed at the bottom or under side of the body b, which is prefer ably convex longitudinally with a channel or groove 9, which is circular-sha ed in crosssection and extends the entire ength of the bolster a, its end ortions passing through and uniting-with't e end ortions 10 yof the body b, which are prefera lybox-shaped in cross-section and adapted on their under sires for the spring-seats yin the usual manner. The top` and bottom walls ofeach end portion 10 at each end ofthe body b are united to each other in the midle by a web 11, which is inclined outward from the top wall at right angles to the tangent of the adjacent end of the longitudinally-curved channel 9. Through the top flanges 5 of the middle portion 4 andtop walls of the end portions 10, with which they are flush, are formed lightening-holes 12 12,respectively, arranged as shown or in any other desired manner, the outer configuration of the flanges 5 being preferably concave from their greatest width at the center plate 1 to their junction with the said walls, as shown'. In and along the channel 9 is placed and laterally held therebya circular truss bar or bolt c, of rolled iron or steel, which extends the entire length of the body b and through a hole therefor formed through the end web 11 of each end portion 10, the externally-projecting portion of the bar c being screw-threaded and having a nut 13, so that on turning the nuts 13 against the webs 11 the bar c is tightened and bears closel against the bottom or bed of the channel 9 or its entire length, thereby forming a strong auxiliary tension member to the bolster a, and enabling the cross-sectional area without loss of strength and ri idity. l

olster a seen In the modification of the in Figs. 6 to 10 two truss-bars c are used in lieu of one, as before described., in which case4 the middle portion 4 of the body b is preferably I-shaped in cross-section and the bot- Paten-'ed May e, 190e. l y

tom channels 9 formed only part way along the under side of the bottom flanges at the outeredges thereof and preferably beneath the center plate 1 similar channels 9being formed for the bars c through the end portions 10 of the body b adjacent to their side Walls, as shown, the bars c bearing throughout against the under side of the body b', Which is substantially similar in principle and construction to the body b, previously described,

IIO

jcting thrgngh each end thereo'ffand: meansV 1. A carfbolster, cnlprisilrlg a, czlstfsffeelz bQdy. n zuillg the center plate, sul@l bearmgs,

and `springseats Aintegral' thelwivth, a 11d Y inwing a channel forlnedV ints under side, n.tlussr haii adaptedtfo bear wlthl-n the C11 annel agapnst:

tllsafikbogly orvits entire length,y and` pmn bndy', hiying.thefcner platre', Side, bearings,

lng--a'.chanelsformed in its under,sideQHtllel fffiliddle.and` @nelpoybiQnsfof'the said bQdy beand siprfingr-seatsintegralherewith Mid, havbear withinth,channel against-thas id bony Y for its entire length, and.vprojectnigftbrough each endlgleljeof, andljmeans forisecnvring and-.i

EDWARD. FUR-ELM

Images