Old bathtub spout won't stay affixed

[wlevans]

I'm pretty inexperienced in this area, and hoping for some guidance from someone who knows what they're doing. I searched for other threads addressing this specific issue, but didn't find any.

As you can see in the photos, the spout that covers the pipe in my bathtub has fallen off. It detached in two pieces: the spout itself, which I'm holding in the photos, and the silver ring that's pictured mounted on the wall.

I was able to use caulk to (somewhat messily) reattach the ring, and it's been holding well. However, the spout itself won't stay caulked onto the ring for more than a day or so before falling off. There's no threading or anything to hold it in place - the circular rear of the spout nestles into a round groove on the ring, but that's it.

Is anyone familiar with this style of tub spout? Should I be trying to attach it with something other than caulk? Thank you in advance for any guidance!

 

[Twowaxhack]

The spout is broken. The threads that were once built into the spout have broken off and are still screwed on the 1/2” copper Mip threads that are soldered onto the copper pipe.

You’ll need to hold the copper adapter on the wrench flats and then unscrew the remainder of the broken spout counterclockwise.

Applying some heat with a torch to the broken spout threads would help them break free.

Just don’t twist the copper.