This engine is made to a design which was published in Model Engineer magazine in 1965 by Geoffrey Weller. The design was used as a project by certain schools, including Albury Manor and Court Lodge, so it's likely this was made as a school project at one of these schools; probably under the tutelage of Roger Williamson or Geoffrey Weller himself. The name J G Selmes is stamped into the underside of the base which, presumably, is the maker.
Click here to read an interesting email concerning the history of this and other Weller engines.
Typical of school projects, the design includes a range of metalworking techniques. The base is a substantial casting which includes the mounting for the engine frame. The firebox is a traditional folded steel construction supporting the boiler and having an elongated hole for the burner.
The brass boiler is 2" diameter x 5 5/8" long. It is a simple pot boiler with a safety valve which also doubles as filler. There is no water gauge or overflow plug. The steam pipe issues from a very nominal steam dome at one end of the boiler and goes directly to the engine bracket.
The engine is a traditional single acting oscillating type, 7/16" bore x 3/4" stroke. The piston rod is a flat bar connecting to a disc crank on one end of the crankshaft. The crankshaft fits through the engine bracket and the support forming part of the base casting. This arrangement gives a good long bearing surface. There is a drilling in the casting for oiling. On the other end of the crankshaft is a 2" diameter machined flywheel.
On the whole, this example is well made and is in good condition. The burner is missing, but I have had a replica one made.