Close-up of metal rake + glass tumbler. Leyden jar storage battery is to the right. The<unk><unk>  was made by a Shaker pharmacist named Thomas<unk>  in 1810 for medical treatment.<unk>  was medical physician for the Shakers, a religious group of colonial America. He was a botanist and used herbal medicines and unorthodox medical "cures" for his patients, including electricity.<unk>  consists of a wooden base platform sitting on a frame, forming a box. The wooden platform is about wide and about deep. To one side of the wooden platform is mounted a small axle on pivots, which holds a rotating glass jar cylinder about the size of a Mason jar. This glass jar is attached to a crank wheel of about with a leather belt. The crank wheel can be turned by hand. The wooden platform also contains a Leyden jar-style battery in one corner, standing some high. The battery is a glass receptacle with a metal rod in the center, covered by a metal ball on top which collects and releases a high voltage electrical charge.
Corbett's electrostatic machine
Alpins method
Welner table
Shepp–Logan phantom
Darrow Yannet diagram
Reed–Muench method
Paula method
Jaeger chart