Flatrod system
The flatrod system (German: Kunstgestänge, Stangenkunst, Stangenwerk, or Stangenleitung; Swedish: Konstgång or Stånggång) was an invention of the mining industry that enabled the mechanical movement generated by a water wheel (German: Kunstrad) to be transferred over short distances. It was invented in the 16th century and by the 18th century was being used to transmit power up to four kilometres.