Barrels of earth and debris can be thrown into the moat from under the front of the machine as a decoy to distract from the doubled-over bridge, which can be unfolded quickly and unexpectedly.
Mechanics: winch; hand crank; spur gear and lantern; worm and worm gear; lantern and rack.
Ramelli, Agostino. “Plate 144: Bridge for Crossing a City or Fortress Moat and Scaling Its Wall.” In Le Diverse Et Artificiose Machine Del Capitano Agostino Ramelli. Paris, France, 1588. https://digital.sciencehistory.org/works/tx31qh855.
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