Seiko Institute of Horology / Mechanical clock
The Seiko Institute of Horology (now The Seiko Museum) was opened in 1981 as part of a project to commemorate the 100th anniversary of the founding of Seiko. The museum displays research materials related to time and timepieces produced in Japan and other countries around the world. (For more information, see the February 2009 issue of the PR magazine pla-topia.) http://museum.seiko.co.jp/
Two weights are utilized, with one the driving force to power the clock, and one employed for ringing the bell. In this structure, one of the gears pulled by the weight rotates one revolution per hour, and upon rotation, a single protrusion attached to this gear releases the bell strike stopper, and the bell rings once every hour.
