>I all my years, I never saw a percolator that shut itself off. No pause in
>perking... they just kept on going. When we were satisfied with the time
>elapsed or the color and character of the coffee visible in the glass bubble
>of the percolator lid, it was time to unplug and serve.

My aunt had percolator that she had to use on the stove. The pot and lid were
made out of glass and the basket and stem were metal. For some reason she
never went out and bought an electric percolator.