. Report of draft gear tests, United State Railroad administration, Inspection and test section; . Sec. Draft Geor Cyc/e 7/me SecondsFigs. 86k and 86m—Time-Force Curves, Bradford K Gears Draft Gear Tests of the U. S. Railroad Administration 253 +> JS *., <5 So//d Buffer in Car A lest Gear Na46in CarB //ryaaci- Ve/ C^^T- O ^^ B ^^^ ^r figure sen .05 Jt ) JS .20 . -,.,- Sec Gear- Re/ease. u .25 .30 .35 .40 .45 uajU Compress/on. r- -,,- Sec Dr-crff- Gear- Cyc/e M. 7T/ne — Seconals Curve D, determined from superimposed car-movement Curve B, traced on a small drum, rep
. Report of draft gear tests, United State Railroad administration, Inspection and test section; . Sec. Draft Geor Cyc/e 7/me SecondsFigs. 86k and 86m—Time-Force Curves, Bradford K Gears Draft Gear Tests of the U. S. Railroad Administration 253 +> JS *., <5 So//d Buffer in Car A lest Gear Na46in CarB //ryaaci- Ve/ C^^T- O ^^ B ^^^ ^r figure sen .05 Jt ) JS .20 . -,.,- Sec Gear- Re/ease. u .25 .30 .35 .40 .45 uajU Compress/on. r- -,,- Sec Dr-crff- Gear- Cyc/e M. 7T/ne — Seconals Curve D, determined from superimposed car-movement Curve B, traced on a small drum, represents movement ofcurves, represents combined draft gear movement and yield gear in Car B. of car bodies. Curve A, derived from curves C and B, represents simul- Curve C, obtained by eliminating car body yield from taneous movement of gear in Car D, represents true combined movement of both gears. Fig. 86n, 86p and 860—Time-Closure Curves, Bradford K Gears 254 Draft Gear Tests of the U. S. Railroad Administration 400300200 So/fof Buffer /r? Car A. Test Gear No. 46//? Car 3. /mpact^ \fe/ocity= MP/i
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921
