Aetna Electric Co. X-ray Tube (ca. 1890s)

The small paper label on the evacuation arm reads "Pat. applied for. Aetna Electric Co. Manufacturers. " The tube is of a very early design, probably 1890s. Given the concave cathode and sloped target, I would guess that it was specifically designed to produce x-rays. The bulb (on the right end in the photo) was probably intended to counteract the variations in output that were characteristic of the early cold cathode tubes.

Size:  approximately 12" long with 2 1/2" bulb diameter

Kindly donated by Ron Kathren

X-ray Tubes               Museum Directory

Last updated: 11/07/07
Copyright 1999, Oak Ridge Associated Universities