I’m indebted to John Balding for forwarding me this picture. The image, I think from around the 1880s, shows the contraption used by Colonel Majendie, the British Chief Inspector of Explosives, for transporting IEDs. The IEDs were taken to the EOD facility on Duck Island in St James’s Park, Westminster. I think it is very possible that Majendie copied it from a similar technique used the the French authorities in Paris.
A nicely sprung vehicle, clearly intended to be pushed by a person, possibly based on a “pram”.
I have copies of Majendie’s report of his visit to Paris. Somewhere I have copies of drawings of the equipment used at Duck Island (this was an ASD during WWII). Should you want sight of them, email me an email address.