Clayton Boyer Clock Designs



Saying that Cogitation is a kinetic sculpture would be an understatement. There is constant movement happening simultaneously in multiple parts of this sculpture. Not only do her twin, almost 20" diameter display wheels rotate first one way and then the other, but her large counterbalanced arms are seen randomly releasing and stopping her dual escapement system.

Cogitation is shown here with her two complex display wheels. The plans for Cogitation also have a pattern for a much simpler set of display wheels that are easily interchangable. Or, if you choose, the sculpture can even be more simply constructed by creating a one wheel, one escapement kinetic sculpture. This is a design that is easily adapted to many functional variations.

Cogitation was designed by Clayton Boyer and Forrest Burnett and built by Forrest. The sculpture is shown here with Forrest's artistic interpretation of the weights and counterweights that drive the mechanism. Forrest's Cogitation is shown in the YouTube video below:


Cogitation is designed to run for thirty minutes. Her smooth, quiet, rhythmic operation, interrupted only every few moments by the click of the escapement, is an amazing thing to watch.

Be sure to check out the wonderful interpretations of "Cogitation" by other clocksters in this Flickr Pool: Cogitation Flickr Pool

And you can see other builders' Cogitations on YouTube here:  Cogitation YouTube


Cogitation plans are available in TWO different formats. Please choose only one option:

The price of the paper plan delivered by mail is $50.00 plus shipping. If you would like to purchase Cogitation paper plans by mail (our usual method), click here:


If you would like to purchase electronic plans in dxf format and receive them via email, you must:

1. Have a CAD program that can read dxf's.

2. Have a valid email address that can receive a 5 MB attachment. Add to your safe senders list so we don't end up in your spam filter.

If you prefer the dxf/email option, you will not receive a paper copy by regular mail. Plans purchased with the dxf option will be delivered to your inbox as an email attachment after payment is received, usually within 24 hours. The price of the dxf plan delivered via email is $47.00. To purchase dxf plans via email for Cogitation by credit card, click below:

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