. Report of draft gear tests, United State Railroad administration, Inspection and test section; . 73MP/f. 300 1 400 300 100 /GO figure78k 0 .05 ./C0/0/Sec. Gear Compress » /5 2600 \ Test Gear No. 2/ in Car Geor No. 20 in Cor l/eiocitv= 700600SOO400 300 200/OO figure76m 05 /O /. Sec. Gear Compression-+• 5 20 25 .30 .35 45 .50- -Sec. Gear f?e/eose * » Sec. Draft Geor Cyc/e — m Time —SecondsFigs. 78k and 78m—Time-Force Curves, Cardwell G-18-A Gears Draft Gear Tests of the U. S. Railroad Administration 199 6 So/id Buffer- /n Car A Test Gear No. 20 tn Car3
. Report of draft gear tests, United State Railroad administration, Inspection and test section; . 73MP/f. 300 1 400 300 100 /GO figure78k 0 .05 ./C0/0/Sec. Gear Compress » /5 2600 \ Test Gear No. 2/ in Car Geor No. 20 in Cor l/eiocitv= 700600SOO400 300 200/OO figure76m 05 /O /. Sec. Gear Compression-+• 5 20 25 .30 .35 45 .50- -Sec. Gear f?e/eose * » Sec. Draft Geor Cyc/e — m Time —SecondsFigs. 78k and 78m—Time-Force Curves, Cardwell G-18-A Gears Draft Gear Tests of the U. S. Railroad Administration 199 6 So/id Buffer- /n Car A Test Gear No. 20 tn Car3 /mpac-r Ve/oci-fv—273 c^r ■ O 2 JT^B Figure76n .OS A ^nj^/Seo Gear* Comaress. ? ./S .20 .25 .30/i?v Sec. Gear fte/ea&e. .35 .40 45 ^ ~>-j Sec Dt-o ■f? Gear Cyc/e- Test- Gear No. 2/ in Car/1 Test Gear No. 20/n Car3 /mpacf Ve/oa+v= 3 / & 5 .k 7 A S 2 o .2 S 3 0 .35 40 .45. TesT Gear No. 2/ /n Car A lesi- Gear No. 20 /h Car 3 hpocf \Ze/ocity= 7T/7?e—Seconds 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. represents sinu Fics. 78n and 78q—Time-Closure Curves, Cardwell G-18-A Gears 200 Draft Gear Tests of the U. S. Railroad Administration 500 So/id Buffer /n Ca rA. Test Gear A/q. 20 //? CorB. /mpocr Ve/oc fty=ZJ9AtPH. ** ynn 255,000** i Nj 200 1 \ ^^*t >J /OO (— =-
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921
