>I found this in a barn cleanout.
Lucky dog!
>Was this used as-is? or in an anvil?
Used as is. Unlike an anvil beak, A stake anvil has a dedicated spot, or stump
>what kinds of things did you do with it?
Smaller or lighter work or finer stuff -- work that wouldn't be convenient to do on a big anvil. Note what others have said here. Tinsmiths. clockmakers, silver smiths... Somebody should have said gunsmiths, too.
Your's looks like a more general pattern. Dimensionally, it looks a lot like the stake anvils supplied to ordnance artificers during the Civil War (and before and after). I haven't figured out yet just what the ordnance artificers did, but they got more toys than the artificers in the field.
Once I came within 18 seconds of winning a US marked stake anvil on eBay...
>How do I get it out of the RR tie? or should I leave it in?
I'm the impatient sort, Skip. I can't see a good reason for preserving a RXR tie, so I'd just put a wedge on line with the stake and smack it with a big sledge hammer.