Special X-ray tube for therapeutic treatment

X-ray tube by Macalister Wiggins Inc. of Boston Mass., with a tungsten filament

Simple variey of x-ray tube with focussing cathode made about 1900

Simple variey of x-ray tube with focussing cathode made by W. Watson and Sons of London, about 1905

X-ray tube with focussing cathode made about 1905

X-ray tube made in Germany about 1910

Rotating anode type of x-ray tube with a double ribbon filament, made in the U.S.A. about 1950

Andrews X-ray tube, or protexray, with flat circular cooling fins separated by metal spacers

Line focus X-ray tube

X-ray tube, with separate anode, supplied by Watson and Sons of London

X-ray tube, evacuated pear shaped glass vessel with evacuation point, flat circular cathode and ring anode but no anticathode, fixed into a turned wooden mount with anode wired through the stand, by A.C. Cossor, London, England, possibly to the design of A.A. Campbell-Swinton, agents Newton & Co., London, England, early 1896

X-Ray tube with deep purple tint on glass, with separate anode and target

X-ray tube, Crookes-type, 'Teapot' shaped, anode not directly oposite cathode, a curved evacuation tube attached to the envelope of the cathode, a spot on the glass bulb opposite the cathode which has turned a yellow colour, most likely from being bombarded with electrons, manufacuter unknown, early - mid 20th century

Simple variey of x-ray tube with focussing cathode, maker unknown, c. 1900