. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ington, T. H., & Co 22 Tabor Mfg. Co 7 The Tanite Co 345 Underwood, H. B., & Co 11 Union Switch & Signal Co 345 United States Metallic Packing Co 25 Vanduzen Co 27 Vulcan Iron Works 9 Walker. A. Fenton 343 Walworth Mfg. Co 2d Cover Washburn Co 4th Cover Watson-Stillman Co 4th Cover Westinghouse Air Brake Co 12 Westinghouse Electric & Mfg. Co 11 Whittlesey, Geo. P 337 Wiley, John, & Son 344 Wood. R. D., & Co 16 Zephon Chemical Compound Co 19 Zeller, Geo. A 16 IK!£!!?X::Eifiineerin$ Copyright b
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ington, T. H., & Co 22 Tabor Mfg. Co 7 The Tanite Co 345 Underwood, H. B., & Co 11 Union Switch & Signal Co 345 United States Metallic Packing Co 25 Vanduzen Co 27 Vulcan Iron Works 9 Walker. A. Fenton 343 Walworth Mfg. Co 2d Cover Washburn Co 4th Cover Watson-Stillman Co 4th Cover Westinghouse Air Brake Co 12 Westinghouse Electric & Mfg. Co 11 Whittlesey, Geo. P 337 Wiley, John, & Son 344 Wood. R. D., & Co 16 Zephon Chemical Compound Co 19 Zeller, Geo. A 16 IK!£!!?X::Eifiineerin$ Copyright by Angus Sinclair Co.—1907 A Practical Journal of Railway Motive Power and Rolling Stock Vol. XX. 136 Liberty Street. New York, August, 1907 No. 8 Early Wooden Bridges. inventor. Burr and Wernvvag, two Penn- upper chords, with posts and braces be- The wooden trestle, as well as the sylvania carpenters, were very successful tween. The posts were framed into the wooden bridge, may fairly be called na- in building a form of wooden bridge chords and the diagonal braces, which. HOWE TRUSS RAILWAY BRIDGE AND LIGHT CARRIAGE ROAD BRIDGE CROSSING A DEEP MOUNTAIN GORGE. tives of the United States. One of the which combined the principle of the arch were made of wood, were framed intoearliest forms of wooden truss bridges and that of the truss. the upright posts. A pair of wooden was known as the Burr bridge, after its This structure consisted of lower and arches were placed one on each side of 350 RAILWAY AND LOCOMOTIVE ENGINEERING August, I907. the trusses, and these arches rested uponthe abutments below the lower chord, andextended very nearly up to the top chordof the bridge. A bridge of this descrip-tion was built by Wernwag in 1803 overthe Delaware River, and was used as a members being made of one of thesematerials and some of the other. In theHowe truss the wooden posts used inBurr bridges were replaced by iron rods,and the diagonal members crossed eachother in the form of the l
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
