Thanks for your post and glad to clarify the request. Little research and reporting has been done on Mass X-Ray chest screening so I and a fellow colleague are looking at the whole subject both military and civilian, with a view to publishing a report, perhaps next year. It is intended to cover equipment, vehicles, staff training and reports and results as far as is possible.
It's probably easiest to note what is not required....e.g. ordinary field X-Ray equipment and vehicles. These would have been used to look at broken bones and other injuries sustained at work and in the field.
Pulmonary Tuberculosis (TB) was an ever growing problem, becoming a very great concern in the 1930's. So serious was it that about 1935 the armed forces embarked on a campaign of examining personnel using mass X-Ray equipment mounted probably in vans and moving from base to base. The resulting images (on photographic film) would then be examined and those found to have, or suspected of having, a problem would then be dealt with accordingly by isolation/treatment. It should be noted that early civilian equipment was of the 'portable' type, being moved in vans and set up in buildings, offices,halls etc. The van then became a mobile photographic darkroom for processing the film and examining the images obtained by projection on a screen. Military units might have been similar.
This was an early form of Mass X-Ray for later civilian use in the NHS campaign starting in 1948 although there were a few machines about prior to that year. Work by the Medical Research Council considered the methods used by the military in their study of 1942- 1944, reporting to the Ministry of Health in 1944. This resulted in the Mass X-Ray campaign which ran until about 1980.
So, I my research is concerned with not just vehicles but the installed and equipment used - X-Ray machines, photographic processing and image examination equipment etc. A Time Line would perhaps be 1935 to 1950.
I have now established that the generator units were the same as 4 wheel 'hippo' ? trailers fitted with a Lister JP4 power unit driving a 21kVA generator. An almost 'off the shelf' unit. Indeed, the design of civilian X-Ray van (on a Leyland Beaver chassis) bodywork was based on the military design. Chicken and egg! After about 1957 it seems generator trailers were not used - design changes, updating and X-Ray equipment changes being the reasons.
So, vehicles and equipment information sought is not about 'I think you might have broken your arm sir. I'll just take an X-Ray to check' but rather the well planned and thought out mass chest X-Ray scheme for the armed forces.
The attached photo is of an early NHS Leyland Beaver unit with a 'hippo' generator trailer.
I would very much welcome any info about the REME Museum, equipment and archive.
I hope this answers your helpful response. If not, do get back to me. And ... hope to hear from you again IDC.
Kindest regards,
David Gosden