This is one of two models made by Hobran engineering for Swan.
The boiler is 2 1/2" diameter x 3 1/4" long and is made of copper. It has a safety valve, whistle, steam regulator and a try-cock for water level determination. It is fired by a three wick meths burner. Steam is fed from the regulator to the top of the port face of the oscillating cylinder. The brass cylinder is 5/8" bore x 3/4" stroke. Unusually, the piston is hollow. The engine frame is cast alloy. The crankshaft has a disk crank at one end and a 1 5/8" diameter cast alloy flywheel at the other. The flywheel incorporates a 11/32" diameter pulley. Exhaust steam is fed to the base of the chimney, which is square section with a printed brick effect finish. As acquired, there were a few minor problems. The safety valve was seized closed, which I have now freed. The whistle was missing it's top half. I have made a replacement for this. The exhaust pipe was missing, for which I have made a replacement. Strangely, there are two holes in the chimney base; one for the exhaust pipe but the other has no obvious purpose. It might be a manufacturing defect but other similar examples have been seen. Paintwork looks newer than the presumed date of manufacture and has probably been re-painted. It was obviously done with a brush. I'm not sure if this would have been so originally.| Make | Swan |
| Model | M1 |
| Made | Early 1920s? |
| Description | Stationary |
| Cylinders | 1 |
| Cylinder Type | single acting |
| Bore mm | 16 |
| Stroke mm | 19 |
| Valve Type | Oscillating Cylinder |
| Boiler Type | Horizontal |
| Boiler Diam mm | 64 |
| Boiler length/height mm | 82 |
| Fuel | Meths |
| Mechanical Condition | Good |
| Cosmetic Condition | Fair |
| Paintwork | Re-painted? |
| Packaging | |
| Purchased | 12 August 2019 |
| Purchase cost | £300 |
| Additional spend |