Water-cooled X-ray Tube of Unknown Manufacture (ca. 1916-1920) |
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This is an example of a water-cooled cold cathode x-ray tube that probably dates from 1916 to 1920 (the black metal collar around the cathode is stamped 1916). Unfortunately there is nothing on the tube that would indicate the manufacturer. Although it is not visible in the photograph, the back side of the smaller bulb that serves as the water reservoir (on the right end in the above photo) is severely cracked. Note that the electrical connection to the anode runs diagonally upward towards the right and into the glass projection situated at the two o'clock position on the large bulb. This was probably done to accommodate the connection of the cooling system on the right end of the copper-clad anode. This particular tube belonged to M. J. Gross who worked with Dr. Coolidge at General Electric in Schenectady N.Y. Gross later became Vice President of the GE X-ray Company. During the 1930s and 1940s, Gross and Zed Attlee formed the core of Coolidge's research and design team. Size: approximately 7" diameter bulb, 23" long Kindly donated by Linda Sinrod in memory of her father, Malvern J Gross |
