I want to know the answer to the following question:
What was Jacobi's improved motor used to propel?
All the background I'm provided with is that "After many other more or less successful attempts with relatively weak rotating and reciprocating apparatus the Prussian Moritz von Jacobi created the first real rotating electric motor in May 1834 that actually developed a remarkable mechanical output power.". Is that enough to answer the question?
Answer: no