. Report of draft gear tests, United State Railroad administration, Inspection and test section; . ar B//rpoct Ve/ocify=.S6 MPH. O 302 Sec- Dnafii~ Ge<» Cyc/e. V>ression.„ IS .20 ZS .30 n ii? Sec. Gear Re/ease. 3S -fO .4i O 321 Sec Drcr+ Geon Cvc/e. 71/ 7?e—Secot 70S. Curve D, determined from superimposed car-movementcurves, represents combined draft gear movement and yieldof car bodies. Curve C, obtained by eliminating car body yield fromcurve D, represents true combined movement of both gears. Curve B, traced on small drum, represents movement ofgear in Car B. Curve A, derived from cur
. Report of draft gear tests, United State Railroad administration, Inspection and test section; . ar B//rpoct Ve/ocify=.S6 MPH. O 302 Sec- Dnafii~ Ge<» Cyc/e. V>ression.„ IS .20 ZS .30 n ii? Sec. Gear Re/ease. 3S -fO .4i O 321 Sec Drcr+ Geon Cvc/e. 71/ 7?e—Secot 70S. Curve D, determined from superimposed car-movementcurves, represents combined draft gear movement and yieldof car bodies. Curve C, obtained by eliminating car body yield fromcurve D, represents true combined movement of both gears. Curve B, traced on small drum, represents movement ofgear in Car B. Curve A, derived from curves C andtaneous movement of gear in Car A. B, represents simul- Figs. 81n, 81p and 81q—Time-Closure Curves, Gould No. 175 Gears Draft Gear Tests of the U. S. Railroad Administration 221 600 Sp/tf BufYbr /n Cor A. Z3Z 500 /mpocr \fe/oc/ry=272 400 GOQOOO1* 300 200 figure <0 6/r si / 7 3 Gear C/osure—/nches. 500 400 300 § 200 f i /oo tsf Gear No. 42/n Cor A., s/ Gear No. 4/ in Cor Sr-/mpocT ife/oc/ty= Mrfi figure 8/s r W. ^PC4Q000# ^ feS&g^fcW No. 4Q Car A / 2 Gear Closure—/nches Gear C/osure—/aches Figs. 81r, 8ls and 81t—Force-Closure Diagrams, Gould No. 175 Gears 222 Draft Gear Tests of the U. S. Railroad Administration
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921
