From Glenn's message:
I am 99% sure it is the bell striking mechanism from either a burglar or fire alram, probably circa 1890-1910. In the days when most places did not have real electrical service yet, these were the common way to go. They could be tripped by a solenoid which only needed drycell batteries for power. Then the heavy spring wind mechanisms took over for the bell clanging. There would have been a large bell with clappers which spun around inside, driven by one of the output shafts of this motor. There were no speed governors or regulators needed for these motors since the bell clappers themselves regulated the speed rotating around inside of the bell.
Well, I'm convince. Fascinating, ingenious, and educational! I love it.
My Thanks to Glenn and others for presenting and solving this mechanical mystery!