W. R. Pidgeon

W. R. Pidgeon developed the , an electrostatic machine with a unique setup.


Pidgeon presented this machine to the Physical Society after several years of investigation into influence machines (in the 1890s). The device was later reported in the Philosophical Magazine (December 1898, pg. 564) and the (Vol. XLV, pg. 748). Pidgeon machines possess fixed inductors arranged in a manner that increases the effect (and it electrical output is at least double that of typical machines of this type [except when it is overtaxed]). The essential features of the Pidgeon machine are, one, the combination of the rotating support and the fixed support for inducing charge, and, two, the improved insulation of all parts of the machine (but more especially of the generator's carriers). Pidgeon machines are a combination of a Wimshurst machine and , with special features adapted to reduce the amount of . 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).


  • W. R. Pidgeon," An Influence-Machine". 1897 Proc. Phys. Soc. London 16 253-257 doi 10.1088/1478-7814/16/1/330
  • W. R. Pidgeon, "An influence machine", Philosophical Magazine, XXXVI, pp. 267–271, July–December 1893. Describes a modified Wimshurst machine, with embedded sectors and extra inductors to increase the output current.
  • W. R. Pidgeon, "An influence machine", Philosophical Magazine, XLVI, pp. 564–567, July–December 1898. Describes an improved version of Pidgeon's machine.

External articles

  • The Electrical Engineer. (1884). London: Biggs & Co. Page 19
  • Machine design, lineone.net/~aarekhu.