File:American engineer (1912) (14780343133).jpg

Identifier: americanengineer87newy (find matches)
Title: American engineer
Year: 1912 (1910s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York, N.Y. : Simmons-Boardman Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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mewhat similar to that employed by the PullmanCompany for steel sleeping and parlor cars is used. It con-sists of a Commonwealth combination cast steel double bodybolster, end sill and platform connected by fish belly type centersills and side sills of steel angles. In other respects, however, there is little similarity between the top. These girders are 31 in. in depth at the middle for alength of 22 ft. 8^ in. They taper at each end for a distanceof 12 ft. 10^ in. to a depth of 13 in. A top cover plate, Yi in-in thickness and 26 in. wide, is secured to both sills and over-laps for the full length of the splice at the steel castings. Thereis also a splice plate on the under side of each sill at this pointwhich is Y^ in. in thickness by 7^ in. wide and 3 ft. in length.All the angles on the center sills are continuous for the fulllength of the web plate with the exception of the inner angleon the lower edge which does not form part of the splice 90 AMERICAN ENGINEER. Vol. 87, No. 2. 13
Text Appearing After Image:
February, 1913. AMERICAN ENGINEER. 91 to the casting except as it is secured through the medium ofthe bottom cover plate. The web of the center sill is providedwith four vertical stiffeners of 3 in. x 3 in. x ^ in. angles whichextend the full depth of the sill and are spaced equidistant be-tween the cross bearers and the cross tie and one in each panelbetween the cross bearer and the bolster. The center sills are made with a 1% in. camber by shearingthe web plates tapering from the cross bearers to the ends.All rivets in the center sill construction are ?4 in. and are pressed steel center sill separator in two pieces and a pair ofpressed steel crossties all made of J4 ■ plate flanged on allsides. The form and arnujgement of this structure is shownin one of the sections. The side sills are 6 in. x 4 in. x ^/s in. rolled steel anglesextending in one piece for the full length of the car, beingsecurely riveted to the bolster castings and to the cross bearersand cross tie. They are set w

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