. American engineer and railroad journal . the shearing off of the bolts,is as follows : The nut of the bolt is provided at its lower endwith radial teeth, so that the annular nut-lock, which is in theform of a spiral and is placed between the nut and the cliji,will hold better. Fig. 1 .shows the general form of this lower end ternun;ites by a vertical arm, which catches ina groove cut into the inside of the clip. Post Ties.—The Post tie, which is in tlie form of an invertedtrough, is the derivative of the Vautheriu type, which wasdesigned in France in 1863, at Fraisans, Ijy Mr. Vau
. American engineer and railroad journal . the shearing off of the bolts,is as follows : The nut of the bolt is provided at its lower endwith radial teeth, so that the annular nut-lock, which is in theform of a spiral and is placed between the nut and the cliji,will hold better. Fig. 1 .shows the general form of this lower end ternun;ites by a vertical arm, which catches ina groove cut into the inside of the clip. Post Ties.—The Post tie, which is in tlie form of an invertedtrough, is the derivative of the Vautheriu type, which wasdesigned in France in 1863, at Fraisans, Ijy Mr. Vautheriu, atthe Franche-Comie Works. It has a length of 8 ft. in. andweighs 171 lbs. The incline of 1 in 20, which generally ob-tained in other .systems of metallic ties, is easily realized,either by means of the Haarnian arrangement, which consistsof the interposition between the liange of the rail and the topof the tie of 11 sole tie-plate, or by means of the Hasch-Licht-hammer device, which consists of obtaining this inclination at. SPLICE BARS FOR POST TIE. the point of tlie support of the rails by stamping the tie whenit is hot and giving it a concave outline in its longitudinal direc-tion ; and this lias been done by Mr. Post by another process,in a way that does not deform the tie and in no way injuresits stabilit3^ He has given this deformation to the surface ofthe support of the rail by rolling the tie, either with triplerolls or with a reversible roll by means of a special arrange-ment of the last grooving of the finishing rolls, and by takingcare to obtain an e.\cess of thickness of the metal at that por-tion which has to bear the greatest amount of fatigue. As for the method of attachments, it consists of cli|is andbolts, with an interposition between the bolt and the clip of anut of the double grooved or elastic type, which is in theform of a spiral arrangement which opposes washer has a winged plate raised against one of the facesof the nut whi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
