“Remonter”: A wooden gear clock with remontoire
“Remonter” is a wooden gear clock with a remontoire and grasshopper escapement. It was designed using ACAD and toolpaths created with Cut2D. The complicated parts (ie gears, etc) were fabricated on a homebuilt CNC. This clock uses a combination of materials: Cherry, walnut, birch, baltic birch plywood and brass. The frame and dial are finished with tung oil varnish and wax. The gears are left unfinished since this will most likely lead to a piece of visual art without function! The clock is negator spring driven. However, the springs purpose is to rewind the remontoire every 15 s and advance the clock hands. The escapement is independent from the spring drive in the sense that the remontoire, which is driven by a 10 g mass is the only part of the gear train that influences the grasshopper. The remontoire is a great way to get around the non-constant torque exerted by a spring. You can see a video of the remontoire here:
Close up view of "Remonter" illustrating the clock hands and a mish mash of gears.
The remontoire is driven by a small 10 g mass contained inside a small wooden barrel made from walnut and birch. The winding key can also be seen. I always try to integrate a key holder into my designs.
Front view of "Remonter". Ready to be shown a a local fair.