The Weeden No. 664 is an electrically heated version of the Weeden No. 157, introduced in 1927 and produced until mid 1930's. It has a 5 1/4" heavy iron square base and stands 13 1/2" high. The boiler is steel; so, few of these have survived in working condition.
When originally tested on air it ran great in both directions on 3 psi. As can be seen in the video, the engine required liberal doses of steam oil to get it to run.
For safety, I added a modern Weeden Safety Valve in place of the fill plug for the Steam-Up.
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