For filling ditches and moats with barrels, bales, sacks, and debris, and for defending a city or fortress.
Mechanics: winch; trigger.
         
        
      
         Ramelli, Agostino. “Plate 190: Counterweight Trebuchet.” In Le Diverse Et Artificiose Machine Del Capitano Agostino Ramelli. Paris, France, 1588. https://digital.sciencehistory.org/works/gh93gz754.
      
      
        
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