(1)&(2)A six inch diameter dimple on the lower corners of car bodies on all rolling stock.
(3)(4)&(5)To push rolling stock with a wood pole shod on both ends with heavy metal in yards when loco is on adjacent track. Chains w/hooks can B used 4 pulling rolling stock.(6)A heavy metal ramp to B used, usually in pairs, to replace derailed wheels back on track. Lately I’ve seen wood wedges used instead.
(7)Put on ties close to the rail in front of, or behind, derailed wheels then pushed or pulled by loco to force wheels back on rail.
(8)Drive wheel grip on rail with locos’ weight. More weight, more adhesion. Try to slide your loco.
(9)Add sand on rail close to drive wheels in desired direction.
(10)Metal box on frames of rolling stock to house coupler to allow some of its’ motion.
(11)The coupler currently used by all railroads.
(12)Chain link & pin, a finger eater.
(13)Heat it, then beat the daylights out of it with a sledge hammer. On or off.
(14a)A heavy wire, 12 gauge minimum, runs under the layout connected by smaller wires to the track every 3 feet or so. Makes train speed constant regardless of position of power to loco.
(14b)One wire carries all power through all loads from hot to ground. Amps same, volts vary. Like the old strings of Christmas tree lights. If one bulb goes out, they all go out.
(14c)Two wires, all loads connected between. Amps vary volts same. One bulb goes out, the rest stay lit.
(14d)Some of the circuit is series, some is parallel.
(14e)Power B+, control device, fuse, ground B-, conductor; wire, insulation, connectors, load.
(15)a northern 4-8-4 3rd series. The 844 U.P.RR.
(16)A Santa Fe 2-10-2.
(17)The 844, a 4-8-4 3rd series.
(18)A DD-40AX almost 100 feet long, has 2 3750 horsepower diesel engines & 2 generators, two
8 wheeled trucks built for the 100 year festivities of railroads in America. First number: 6900 U.P.RR.
(19)Decapod a misnomer,. Which is a 2-10-0. They didn’t want to call it a SantaFe because S.P. & SantaFe were arch rivals.
(20)An articulated steamer turned around so cab of loco faced forward & tender was behind smoke box. Smokestack was then behind cab like the tail pipe on your cars making breathing & seeing easier for the crews.
(21)Used exclusively by S.P. to run in miles & miles of tunnels & snow sheds, some well over 10 miles long. To keep crews from being asphyxiated.
(22)Bare foot, no shoes & socks.
(24)Belpaire firebox. I hope you enjoyed these questions.
Thanks for trying. Bob S.