With One You Get Birthday Cake - kinetic sculpture by Gina Kamentsky

Here is another delightful hand-cranked contraption in the mechanical series that artist Gina calls Mechanical Confections.

As ususal, there is a satisfying assortment of mechanical components: a periodically engaging set of bevel gears; a ball bearing on a shifting incline plane; a Geneva wheel; a pair of offset cams causing two followers to toggle up and down; a chiming bell; and, of course, a spinning wooden block with various items printed on its faces -- one of which shows a birthday cake.

See more kinetic sculptures by Gina Kamentsky on her web site.

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