A distinctive feature of this Seth Thomas round top is the lyre shaped 8-day Plymouth time and strike spring-driven movement with a hour strike on an iron bell. Not all of these models have the alarm but this one does. The movement is die-stamped “S. Thomas, Plymouth Conn.” and fitted with Geneva stops (stop-works) to improve timekeeping. It is a large movement squeezed into a relatively compact space.

I wrote two previous articles, one on first impressions and the other on sprucing up the case and a future article (December 24, 2019) addressing a small veneer issue on the front access door but this post concerns the alarm mechanism.

A simple job, less than half an hour in total and the only difficulty was waiting for the part

The alarm mechanism is located just below the movement and to the left and connected by wire to the alarm adjustment wheel mounted on the centre cannon. Both the alarm and the movement strike on the iron bell.

Continue reading “A simple Seth Thomas round top alarm repair” →