Brake Tests

400 0 , Observations. ______________19, 34, 246| 1 Operation, standard for brake ........ ... 48 Operative requirements............ 45 Organization...................... 34 P Partial pneumatic equipment....50, 66, 89 Partial service followed by emergency application, P M equipment...........75 Partial service followed by emergency application, U C equipment...........77 Performance of brake riggings, rela- tive.............................. 129 Pipe bracket portion, Universal valve....-................... 53, 58i Piston travel...19, 38, 121, 133, 139, 141 " " time curve.......133| Plain brake shoes, one-half area____237| Plug connectors, U C equipment.......60 P M Equipment..................... 37 Pneumatic (electro) equipment... . _65 Pneumatic emergency application ..43, 63| equipment, U C, descrip- tion of.............................. 50 " service application, U C equipment.....................56 Power curves...................... 226 Present equipment......................36 Principles of air brake design ________46 Program............................... 12 Pump governor........................18 Pyrometer.........................249, 255 Quick action, automatic brake...36 " closing chamber....................53 « portion, Universal valve..................50, 57| " triple valve....3, 38, 42, 45, 75 undesired..................8 R Radius bar .........................- 124 Rail condition_______________151, 153, 154 Relation of machine and road tests. 131,284 Release, electric....................... 65 • improvement, U C equip- ment......................105, 109| Releasing, recharging.......... .42, 62 Requirements, operative............ 45 Reservoirs, U C equipment...........53 Resistance curves..................226 Rigging tested, brake............ 122 Road tests, brake shoes............234 s Safety valve, U C Equipment...........62| Schedule....................... 13, 240 Scope of tests. ....................6| Serial action...................... 89, 225 Service application, braking power...48, 147 Service application, comparison of P M and U C equipment...................75 Service application, comparison of U C pneumatic and electro-pneu- matic equipments.....................114 Service application, P M equipment..36, 69 Service application, followed by an emergency, P M equipment. 44, 75 Service application, followed by emergency, U C equipment 64, 77 Service application, U C equipment 56, 65, 71, 73, 100, 110, Severe braking conditions.......... Shifting of bearing area............ Ship road....................... 111 273 262 4 Shocks .................156, 202, 225 Signal discharge valve................ 61 " system, electric....................68 Single shoe brake..................... 122 Slack action................20, 23, 156, 202 Sliding________________20, 149, 151 to 154 Slotted brake shoes.................. 237 “ “ " wear of......278 to 281 Solid " “ " " ......278, 281 Sparking.......................21, 250, 272 Speed.............-........................-23, 246 “ effect on friction ................268 Stability..............................71 Standard brake.9, 14, 15, 122, 125, 128, 163, 233 Standing tests.... ..34, 109 Station stops..................34, 100, 108 Stop, desirable distance...............4, 7 “ estimated train No. 3 clasp brake......................... 198 " general discussion.......... 160 “ shortest emergency.....................160,.161 " typical diagrams.—..................202 Stress, fibre..........................121 Summary..........................................14 Switch-box, U C equipment........................61 T Telephones............:.........20, 27 Temperature, atmospheric--------27, 154 « brake shoes...227, 237, 249, 255, 263, 273 Tender, braking power.................133 Testing machine, brake shoes......241, 248 Tests made, results, air brake .......69 " " " brake rigging.....124 « “ total.................. 14 Tie rods................... -....120, 121 Tilting of trucks............. ...120, 122 Time to apply brakes........76, 94, 115, 118 Toledo tests........................... 4 Track.........................23, 30, 32 Train make up.......................18 "........................manipulation.......................................................................23 “ stops No. 3 clasp brake (esti- mated) .......... 180 " stops mixed, P M and U C equipments...................... 95, 100 Triple valve.......... ...3, 38, 42, 75 Troubles experienced......_...........43 Two application stops.. ............ 100