. The elements of railroad engineering . settling ties. The portion of rail at or near ajoint should bend as other portions of the rail. The ends of therails must be held in true surface under a passing wheel, thatone may not be battered. The rail should be so rigidly sup-ported that it will not bend at all. T)rpes. — There are two distinct types of joints used on Ameri-can railroads, i. The angle bar. 2. The bridge joint, whichmay or may not be combined with an angle bar. The ordinary angle bar is shown in Fig. 4. Two modifications, known as the 100 per cent and the Bonzanojoints, respectivel
. The elements of railroad engineering . settling ties. The portion of rail at or near ajoint should bend as other portions of the rail. The ends of therails must be held in true surface under a passing wheel, thatone may not be battered. The rail should be so rigidly sup-ported that it will not bend at all. T)rpes. — There are two distinct types of joints used on Ameri-can railroads, i. The angle bar. 2. The bridge joint, whichmay or may not be combined with an angle bar. The ordinary angle bar is shown in Fig. 4. Two modifications, known as the 100 per cent and the Bonzanojoints, respectively, are shown in Figs. 5 and 6. The two commonest forms of bridge joint are the Weber and the Continuous, shown in Figs. 7 and 8. Joints are either supported (that is, the rail ends fall on a tieknown as the joint tie) or suspended (that is, the rail ends fallbetween two ties called shoulder ties). The bridge joint is a sus-pended joint, the rail ends being supported on a metal baseextending between shoulder ties. 29 30 RAIL FASTENINGS. TYPES 31
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