Mechanical Bank

Tabby's tail twitches as toothsome mice chase your spare change into the coin box of this intriguing mechanical bank. This model is part of a long tradition of mechanical banks. Unlike most, however, it utilizes an intricately connected system of gears, more like the mechanism of a clock than a bank.

The first mechanical clocks of the 13th and 14th centuries were driven by a system of falling weights that moved the gears. A verge escapement mechanism in which two projections fixed to a balance axis engaged and disengaged the teeth of an escape wheel provided the regularly recurring movement that kept these clocks running on time. The same mechansim is at work in this bank.

To insure that the bank will run once you have put it together, perform all cutting, folding, and gluing operations with care. Precision and accuracy are essential. Follow the instructions exactly and the rewards of completing this challenging project will be yours.

Difficulty level: 
Hard
What you will need: 
  • Scissors
  • White glue
  • Super glue
  • Metal-edged ruler
  • Hobby knife
  • Wire
  • Wire cutters
  • Straight pins (2)
  • Sandpaper, fine grade
  • One penny