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Cameo Steam Engine

date made?

Colin Laker refers to this engine as "the Cameo steam engine", which begs the question, was Cameo the name of the company or the model? Perhaps both. It's a close copy of the Bowman M158 but differs in many details. Unfortunately, I don't have an M158 in my collection for direct comparison.

The boiler is 103mm long x 45mm diameter and made of brass. It has a safety valve and chimney but no other fittings. The meths burner is a circular mesh vapourising type. Steam exits through a pipe in the bottom of the boiler but doesn't pass through the flame. The pipe terminates in a compression fitting on the back of the port face.

The oscillating cylinder is 10mm bore x 19mm stroke and is single acting. The piston is connected to a simple bent rod type crank. The crankshaft has a 38mm diameter solid brass flywheel and an 8 tooth pinion gear between the frames, and an 11mm diameter pulley outside the frame. The pinion gear engages with a 56 tooth gear, giving a 7:1 reduction ratio. The 56 tooth gear is fitted on a second shaft, which also has an 11mm diameter pulley.

The whole is mounted on a flat steel base with Meccano standard holes around the edge (rather inaccurately drilled!)

At the time of writing, I have not yet tested the engine but the previous owner says it's in working order. It might work on air but I doubt it on steam. The safety valve spring needs replacement. Cosmetically, it's not good, with obvious signs of repair and rather poor soldering.

Make Cameo
Model ?
Date Made ?
Description Stationary
Cylinders 1
Cylinder Type Single acting
Bore mm 10
Stroke mm 19
Valve Type Oscillating cylinder
Boiler Type Horizontal
Boiler Diam mm 45
Boiler length/height mm 103
Fuel Meths
Mechanical Condition ?
Cosmetic Condition Poor
Paintwork Original?
Packaging Cardboard box
Purchased 5/10/2022
Purchase cost 96.50
Additional spend