“Adrian Special” Coolidge Tube
|
|
|
|
|
This “Adrian Special” Coolidge
type X-ray tube (marked “Patent Pending”), in spite of its early type flat
helical filament and the 45 degree angle of the Tungsten target embedded in
the heavy copper anode, dates probably to the late forties or early fifties.
It probably comes from one of the latest makes of the With a total length of 12”
(30cms) and a 3.5” (9cms) bulb, this tube is asymmetrically fitted on its
anode end with a peculiar thick-layered four- fold heat sink Such tubes were
usually run at 50kV with a current from 3 to 8 mA adjustable according to the
size of the examined foot.. Click here to see an earlier type air-cooled Shoe fitting devices, first introduced in the twenties, were totally banned in the sixties because of the high risk of radiation to both operator and clients (mostly children).
Adrian Shoe Fitting Machine (Picture from the Internet) |
 |
Go to Category Index |  |
| Go to Main Page |