The Turn Of The Century Electrotherapy Museum

Experimental Quenched Tungsten Spark Gap
Based on Herman Fischer / Hugh Thompson Gap
Enclosed spark chamber for introducting hydrocarbon gas

4 Series Spark Gap, Adjustable

Aluminum disks with tungsten press-fit into brass contacts

Two contacts per middle gap section

Insulators are XX Phenolic (Bakelite).  Copper shorting rod allows quick adjustment for number of gaps

Port for introducing liquids or gases

Introducing Turpentine

Appearance of gap in operation
18. Jan 09 - Update:

Complete Gap Mounted To G10 Base

An array of similar spark gaps made this weekend...
JuJu (neighbour kitten)

Coming soon:

Poulsen Arc Powered Tesla Coil

Mejla and Hippo!