Found this online:
This appeared in ‘Engineering’ magazine in January 1903.
Steam lorries (trucks) were common in the UK, but I suspect this was a one-off.
Made for a gold mining company in Africa, to haul heavy loads where a conventional truck or traction engine would be unsuitable (difficult terrain, soft ground). It had to be relatively light. The photo shows it hauling a test load, part of which is on the platform in front of the cab. Pig iron or rhubarb?
V-4 single-acting steam engine with poppet valves, max speed 450 rpm. The cut-off could be varied by sliding the camshaft to bring a different cam profile into play.
Power steering as standard! This used hydraulic rams operating a steel cable to turn the front axle. Hydraulic pressure came from the steam-driven boiler feed pumps!
Made by Simpson & Bibby of Pomona Engine Works, Cornbrook, Manchester. I hadn’t heard of them before, and a search didn’t give much away, although there was a reference to their patents being taken over by Alley & McLellan who went on to establish Sentinel in Shrewsbury. They became the most prolific makers of steam lorries, and switched to diesel engines and locos before being taken over to become Rolls-Royce's diesel division.
The lorry was tested with a run to the Cat & Fiddle Inn. This wasn’t exactly the Gold Coast, but wasn’t as cushy as it might sound. Quite a few members will be familiar with the steep and winding nature of this route from Manchester to Buxton, but in 1902 the road was in a bad state. The test load was 5 tons on the platform and 8 tons on a trailer. 28 tons gross!