come see us at the 2012 Elizabethtown Fair August 20-25 in the Memorial building

18 Cylinder Radial Engine | Pratt & Whitney R-4360 Wasp Major | Horse Drawn Sled

Clockwork Jack

jack

This clockwork jack is a reproduction of an 18th century mechanical device used to rotate a rotisserie. Normally mounted on the side of the hearth, this type of jack would have been found in the kitchens of large taverns or within the homes of the wealthy.

jack

jack

The jacks are generally ran by one of two types of mechanisms, and whether it's a flywheel or a clockwork mechanism, both these types would have a heavy weight to power it.

jack

The jack in the photos will run for about an hour before the weight needs to be pulled up.

jack

I made everything for the jack including the gears, escapement, and the chain.