On 12/28/2018 07:34 PM, Fred McKenzie wrote:
I think this heater matches KenK's request. I also recall a 500 Watt
element that screwed into a standard light bulb socket, but that was 50
years ago.

That was my first thought. They were a ceramic cone wrapped with
nichrome wire, sort of like a toaster turned inside out. Primitive, but
it got the job done. The milkhouse heaters added the fan and as time
went on they got more stylish but ti's still the same old same old.