7-inch gas x-ray tube
Date: circa 1915
Inventory Number: VT4722
Classification: X-ray Tube
Maker: Green & Bauer
Cultural Region:
Place of Origin:
Dimensions:
24.5 x 50.8 x 17.8 cm (9 5/8 x 20 x 7 in.)
bulb: 17.8 cm (7 in.)
Description:
Spherical, three electrode x-ray tube; heavy platinum target mounted in another metal; sparking asbestos regenerator; focusing cathode.
Ref: catalogue #1812, code name zvosgas. It was sold $25 in 1915.
Ref: catalogue #1812, code name zvosgas. It was sold $25 in 1915.
Signedon bulb, stamped: Green & Bauer
FunctionThis x-ray tube has a durable heavy planitum target. The concave cathode helps focus the electron beam on the target. An extra anode is supposed to improve the tube's performance. There is an asbestos regenerator to keep the internal gas pressure at the required levels.
ProvenanceFrom the Harvard Medical School.