. American engineer and railroad journal . ry to produce an initial loading of about 5 per cent, of the i8o THE AMERICAN ENGINEER [April, 1894. maximum load, which is done by applying a definite springpressure t move the drawbar in the direction in which the- (Obe applied to the specimen will move it, and after thisthe scale is balanced in the usual way by sliding weights onthe poise beam. In order to prevent-the Bhockof recoil, re-sulting from the rupture of a huge specimen of high -from doing injury to the thin brass plates in the hydraulicsupport, the abutting pieces 64, of the support whic
. American engineer and railroad journal . ry to produce an initial loading of about 5 per cent, of the i8o THE AMERICAN ENGINEER [April, 1894. maximum load, which is done by applying a definite springpressure t move the drawbar in the direction in which the- (Obe applied to the specimen will move it, and after thisthe scale is balanced in the usual way by sliding weights onthe poise beam. In order to prevent-the Bhockof recoil, re-sulting from the rupture of a huge specimen of high -from doing injury to the thin brass plates in the hydraulicsupport, the abutting pieces 64, of the support whichagainst the ribs in the annular beam »>>, when strains of ten-sion are applied, is made larger in diameter than the hydraulicsupport proper, and is provided with a spiral or screw facwhich engages with a corresponding screw face formed on arotalable ring, 67, tilting in the other annular beam 69. Afterthe initial load lias l>een applied, this ring is rotated by thepinion shaft 68, to bring the screw faces in contact <see r .. GENERAL SCIIEME OF EMERY TESTING MACHINE
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
