johnsmachines

machines which I have made, am making, or intend to make, and some other stuff. If you find this site interesting, please leave a comment. I read every comment and respond to most.

Tag: model

Beam Engine Parallel Motion

A close up shot of the parallel motion apparatus which I made for the beam engine. Designed and patented by the famous James Watt in the 18th century. A complex apparatus which is fascinating to watch in action. Its function is to keep the piston rod precisely centrally in line with the cylinder, despite the circular motion of the beam end.

IMG_1458

I am currently making this engine. It has actually progressed beyond this photo, and is now complete except for the steam connection, installation of control valve, and painting. It is a Bolton No 12. Based on an engine and pump from near Maitland NSW. The original was rated at 16hp. This small version has a […]

Boiler and engine incomplete

Gas fired 4″ boiler Bolton No 7, double action, single cylinder stationary steam engine. I will download  a video of the engine operating on steam, soon.  Keep watching.