Old saw blades and a water pump?

[Kybuck]

I dug up 2 saw blades and what has to be an old water pump housing from a friend's yard. I am looking for a ring that was lost in his backyard but he lived close to some old RR tracks. I am digging up anything I find there, I'm a newbie still learning. So far, 2 nails, a channel rail, a bucket from a toy excavator, 2 beer cans, 1 piece of copper tube approx. 4" long, 2 saw blades, and the old water pump housing. Anyone have a clue what this pump would have fit?

 

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[granthansen]

No clue on the pump. But welcome to the hobby. The more you dig the more you'll learn!

 

[arnofarrell]

The only thing I can think of is a water pump. Also be careful around the tracks, the RR doesn't like to share with metal detectorists

 

[arnofarrell]

Forgot to ask, is it brass?

 

[Kybuck]

I don't think so, I left the finds there at my friend's house. I'm going back in just a little bit, I'll check.