Thanks for posting the photos Doug. Back to my original question. I want to know about the trailer with the boiler and engine driven pump! Thanks <G> Clark propst

Tony writes- Ah, yes: the Coriolis Effect- the truly great universal answer to everything in modeling that we do not know, are are likely to ever know... However did we get along until Tony invoked

Here is a link to a 1950s Santa Fe employee training film titled "Payday". This twenty minute short starts a little slow but then goes on to show a lot of flat switching action featuring nice slow

Fascinating photos--thanks Doug. Some tanks had a "steam jacketed outlet" (ACF's name, illustration in 1925 CBC) that heated the valve and outlet pipe area. It looks to me like the small trailer had a

Group I have posted the two photos that started this thread, per Clark's question. They can be found (when approved) in the photo album MSTL. The photos were taken by Vern Wigfield in June of 1954 in

Hi Tony, it seems you misinterpreted by response to Jim Sabol's query. I'm aware that the valve is inside the tank, with the handwheel in the dome. The tank can only drain by gravity if the commodity

Pure speculation from an old mechanical engineer but the cylinders look a lot like what you see on the semi-trailers on the highways. This, combined with the absence of springs leads me to speculate

The journal box covers look to me to read: "Gould Depew NY" Ed Edward Sutorik

The bottom outlet valves used on steam era tank cars were 4 & 6 inch plug valves, the same design that's still in used today. On the tanks with expansion domes the valve handle (wheel) was located in

I didn't say it was a GOOD design. :-) Tim

What's wrong with informed speculation so long as it is labeled as such? KL

Ed Hawkins kindly provided to me drawings of an ACF tank car built for Dow Chemical in 1936.  In addition to the bottom outlet valve, a detail drawing shows a 2-inch "siphon pipe" reaching BELOW

Yeah, Tim, but I still don't see anything that looks like a "steering arm", or a "steering arm center connection". What I do see are stops on the bolster that would lead me to believe it is some sort

If this were some sort of radial truck using something inside the journals, though, they would want to document THAT, as opposed to what they DID document. They were quite careful to document to

Dennis Hate to rain on YOUR parade, but as this document shows, the amount of deflection of the axle bearings is quite small. In this case, 3/16" using "resilient pads". Something like that could

Dennis Storzek wrote: Dennis, I haven't tried to look at Midwestern practices, but the photos I have, both historic ones and ones I took myself, of California bulk oil dealers are mostly

Boy, I sure hope I didn't start this, because I in no way intended to say the bottom outlet was never used, only that the common unloading apparatus at oil jobbers of the period was set up for suction

Ed Mines wrote: Where do you get this idea? It was done very widely and all the time. And photos I've seen of top unloading pipes are no larger than the outlet pipes at the bottom.

That was my take on it as well. There is a large circular object under each end of the bolster with a "band" of some substance passing beneath and connecting to the cylinders. It is almost as if

I doubt the AAR ever gave this design its blessing for interchange service. I'm rather surprised it even made it past the drawing stage, but some inventors are stubborn. Dennis Not only did