✅ SOLVED Part of a railway?

[zzbeekeeper]

I live next to a Railway line and found a few railway bolts.
Found loads of these, But no idea what they are.

 

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[digging wv]

insulators for the old telegraph/signal lines?

 

[trikikiwi]

Are the central rods solid? Are they Carbon? If so, they appear to be the remains of dry-cell batteries.

 

[releventchair]

Chiswick's Local Web site

 

[zzbeekeeper]

Old train battery.
Thank you very much.
Been digging them up for the past 10 years and now I know what they are.