How Clocks Work
The basic principles of mechanical clock-making have been unchanged for hundreds of years. This short film explains the key points using the Seth Thomas Tower Clock built in 1929 for the Courthouse in Santa Barbara, California.
The animation was created by John Redfern in 2013, almost entirely in an email correspondence with Mostyn Gale, the clock keeper and conservator. John never saw the clock in person. The mechanism is similar to that in Big Ben in London, England.
The video as received in Santa Barbara from John, was originally silent. When it was determined that, as a teaching tool, the film would be more effective accompanied by audio describing what the viewers were seeing, voice description was added, with text and electronics developed by David Bisno, Mostyn Gale and Bryan Mumford.
This animation is reproduced with the kind permission of Dr David Bisno.
How Watches Work
The Caliber 215 manual wristwatch from Patek Philippe is a fine example of Swiss watchmaking. The video uses animation to disassemble the watch to show its construction, before showing in detail the powertrain, the escapement and the complexities of the winding mechanism.
This animation also appears in the Patek Philippe → animation section, along with further details; it forms part of a DVD released by the Patek Philippe Museum.