My grandfather built a four sided street clock in the 1930's-- It was recently restored, brought back to working order and put on display in Buena Park, California. I have a hub about it. If you search 'clock' on my profile page you will find it. If you Google "Dreger Clock" you will also find it. I also have another hub about the Mariposa County courthouse, which has a tower clock that has been running since 1854-- it runs on weights that have to be reset every three days.