Leonardo da Vinci Mechanical Drum

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Leonardo’s mechanical drum is clearly based on a 2 wheeled cart with a large drum mounted at the rear, and played with two groups of 5 drum sticks mounted to the sides of the cart and driven by the motion of the wheels through a lantern gear arrangement. The gear turns two barrels fitted with pegs that that push on the ends of the drum sticks against a spring to a point of release, when the spring forces the drumstick back to beat the drum. The beat pattern can be altered by moving the pegs to different positions around the drum.