. Report of draft gear tests, United State Railroad administration, Inspection and test section; . Ume Seconds Figs. 74b and 74c—Car-Movement Curves, Superimposed. Westinghouse NA-1 GearsThese Curves Drawn by Cars in Test 168 Draft Gear Tests of the U. S. Railroad Administration 6 So/id duffer /r? Cor Gear No. 7/nCor BY/mpocf Ve/odtv=$ MPH 5 KT— Ft per sec. 3 !\ —— Ft per sec. 2 A Ft per sec. / 3 figure744 0 .05 JO 75 .20 25 3V 35 40 *£> Sec. Gear Compress 270 Sec. Draft. Time—Seconds Dotted lines represent instantaneous car velocities as de-termined from the origin
. Report of draft gear tests, United State Railroad administration, Inspection and test section; . Ume Seconds Figs. 74b and 74c—Car-Movement Curves, Superimposed. Westinghouse NA-1 GearsThese Curves Drawn by Cars in Test 168 Draft Gear Tests of the U. S. Railroad Administration 6 So/id duffer /r? Cor Gear No. 7/nCor BY/mpocf Ve/odtv=$ MPH 5 KT— Ft per sec. 3 !\ —— Ft per sec. 2 A Ft per sec. / 3 figure744 0 .05 JO 75 .20 25 3V 35 40 *£> Sec. Gear Compress 270 Sec. Draft. Time—Seconds Dotted lines represent instantaneous car velocities as de-termined from the original car-movement curves. The irregularities are due in general to vibrations of thecar structure induced by draft gear lines represent the mean velocity curves. Figs. 74d, 74e and 74f—Velocity Curves, Westinghouse NA-1 Gears Draft Gear Tests of the U. S. Railroad Administration 169 60 4S935Fti Lbs. Solid Buffer* in Car A Test Gear No. 7 in CarB Imjoacr Vehdtv*~ <iO ^21539 Ft Lbs. 20 //,362 FrLbs +3,475F+Lbs. 0 ,U-< \ 20 N% Wc 2//Ft Lbs.\rk Done. ^2Q924FtLbsHbr* Absorbed 1 figure7*9 .a 5or jo js -2o es mi,* Sec. Gear Pe/ease. .30 .35 40 .4S wo Compression. , 1269 Sec. DrcrFr Gear- Cyc/e. lest Gear No. 6 in Car A Test Gear No. 7 in CarB frpoct Velocity — too, 80GO40 ^85,/OC- Ft uLbs. Test- Gear No. 6 in Car* 7est Gear No. 7 in CarB impact VehcJhs=< ^CarA 2V,900FtL OS. ^ Car-ff^^ pfOFtLbs 020<*060 pS x\ ^~ 4330Work- 0 Ft
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1920, bookyear1921
