On 15 June 1754, he erected a forty metres high, free-standing pole in Přímětice, on which he mounted his "weather-machine", consisting of several tin boxes and more than 400 metal spikes. A well-established theory in that time was that more pointed spikes would conduct electricity better. The pole was secured by heavy metal chains that inadvertently also grounded his construction, making it actually one of the first grounded lightning rods. He described his invention as being very effective at driving off storms: clouds formed when the pole was taken down and disappeared when erected again. He took these occasional observations as proof of his theory that the pointed spikes extracted latent electricity out of the atmosphere, deposing them safely before lightning could form. Several local newspapers and novelty papers from Southern Germany made reports on his attempts.