 Pidgeon machines are a combination of a Wimshurst machine and Voss machine, with special features adapted to reduce the amount of charge leakage.Pidgeon machines excite themselves more readily than the best of these types of machines.In addition, Pidgeon investigated higher current "triplex" section machines (or "double machines with a single central disk") with enclosed sectors (and would receive British Patent 22517 (1899) for this type of machine).