I have this Simplex 4040 with a flush mount plate which has this logo on it. Is this a federal signal logo?
Mhm: it’s also the same one still used on their Q2B electromechanical emergency vehicle siren to this day!
I think Federal Signal may have been the original makers of those. The Simplex ones were just rebrands.
That’s the logo they used until 1976.
According to Logopedia they used that logo from 1901 to 1971, but there was also another very short-lived logo that Federal Signal used from 1971 to 1975. Have a look:
Federal Signal Corporation | Logopedia | Fandom
Yes, federal signal built those horns
Though kind of a late response, thanks to all!