This was an educational model from Helsinki’s School of Technology. The mechanically working models provided a hands-on learning experience in the basics of motorized engines. From what we know of the model, it’s associated with Hannes Collan, who started teaching in the 1920s, and the Helsinki School of Technology. Collan taught mechanical engineering as a student, later becoming a lecturer and finally the long-standing dean of the school.
The engine was manufactured in Germany before becoming a teaching aid. It served to demonstrate a single-cylinder steam engine with two main mechanisms: a simple Trick slide valve (labeled as 2) and a reversing gear (labeled as 3). Both mechanisms are patented and invented to improve steam engine technology, and were developed in the late 19th century.
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