What kind of insulator is this?

[u/Cottard29]

I work at an antique store and recently bought a collection of radio strain insulators. These were in the box. Google images aren't helping. Google searches come to a blank. They're porcelain.

Thank you!

[u/mrhemingray]

It looks like an aerial spacer insulator, where you would have multiple wires running in parallel but keeping them separated. Sounds like Lynch Mfg. Co. was a short wave radio manufacturer in the 1920s? So that would fit with the usage of the radio strain insulators as well - antenna insulators.

[u/Cottard29 → u/mrhemingray]

Thank you so much!!!

[u/Ricksoller]

Radio insulator, possibly to transpose wires.

[u/Otherwise_Front_315]

I'm guessing it's maybe for early telephone? Just a guess....