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What does "DF" mean on boxcars?

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What does "DF" mean on boxcars?
Posted by Onewolf on Tuesday, June 16, 2020 11:39 AM

I frequently see "DF" lettering on boxcars from many different railroads and eras.  I was wondering "DF" means (besides more importantly being my initials Surprise).

 

Thanks.

 

Doug F

Modeling an HO gauge freelance version of the Union Pacific Oregon Short Line and the Utah Railway around 1957 in a world where Pirates from the Great Salt Lake founded Ogden, UT.

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Posted by Wolf359 on Tuesday, June 16, 2020 12:13 PM

As quoted from a site called www.trainorders.com: "DF" boxcars Author: SantaFeRuss In the 1960's and 1970's , railroads had nice logos and things like "Hydra Cushion","Super Shock Control", DF ("Damage Free") for cushion underframes and load-restraining equipment, hence the "DF" or damage free markings on boxcars."

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Posted by SeeYou190 on Tuesday, June 16, 2020 12:37 PM

There are a lot of other letters that show up on freght cars besides DF. I do not know what they all mean.

I have seen LD, HC, CP, and others.

-Kevin

Living the dream.

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Posted by dknelson on Tuesday, June 16, 2020 2:47 PM

Damage Free/DF referred to the load restraining devices inside the car.  I believe Evans had the trademark in DF and a patent in their load restraining devices, but there were other makes.  

You could have DF inside the car and NOT have a cushioned underframe.  And you can have cushioned underframe and NOT have the load restraining devices.

In either case, DF and cushioned underframe made that a valuable car and thus as generally used only for cargoes that needed it - and I suppose where the shipper paid a bit more for the use of the car.

HC might be short for hydra-cushion, which again I believe was a trademark of a particular make of cushioned underframe.  ACF for example used the trademark "Freight-Saver cushioned."

Or it may merely mean hydraulic cushioning which is a generic description and not a trademark

LD might mean "load dividers" such as Equipco/Unarco and others made.  They sort of resemble that movable temporary walls you see in some hotel meeting and conference rooms that can change the size of the room

and CP I do not know.

Dave Nelson

 

 

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Posted by cv_acr on Tuesday, June 16, 2020 2:56 PM

CP is probably Car-Pak, another interior load restraint/divider system.

(I might not have the name/spelling exactly right, but it's definitely an interior loading device.)

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Posted by BN7150 on Tuesday, June 16, 2020 9:28 PM

To answer these questions I started two threads. I hope you find them useful.

Loading devices
http://cs.trains.com/mrr/f/13/t/280988.aspx

Cushion underframes
http://cs.trains.com/mrr/f/13/p/281228/3223087.aspx

Kotaro, Kuriu
Kyoto, Japan

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Posted by ericsp on Wednesday, June 17, 2020 12:11 AM

dknelson

HC might be short for hydra-cushion, which again I believe was a trademark of a particular make of cushioned underframe.

Southern Pacific contracted with Stanford Research Institute to develop a cushioned underframe. They called their invention Hydra-Cushion.

"No soup for you!" - Yev Kassem (from Seinfeld)

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Posted by Lazers on Wednesday, June 17, 2020 2:46 AM

Hi, I've often refferred to this link for info'. Paul

https://trn.trains.com/railroads/abcs-of-railroading/2006/05/freight-car-markings

 

"It's the South Shore Line, Jim - but not as we know it".

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Posted by cv_acr on Wednesday, June 17, 2020 3:33 PM

Lazers

Hi, I've often refferred to this link for info'. Paul

https://trn.trains.com/railroads/abcs-of-railroading/2006/05/freight-car-markings

Not a bad overview for what it contains, but it doesn't cover anything discussed in this thread.

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Posted by BRAKIE on Wednesday, June 17, 2020 6:24 PM

Dispatcher's Freight.. I forget the whole story behind that but,it seems some customers freight wasn't moving as fast as those "DF" cars they was seeing and they complained any car with DF gets preferred  treament.

Larry

Conductor.

Summerset Ry.


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Posted by Bayfield Transfer Railway on Thursday, June 18, 2020 2:56 PM

Deadly Flatulence.

 

Disclaimer:  This post may contain humor, sarcasm, and/or flatulence.

Michael Mornard

Bringing the North Woods to South Dakota!

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