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Genre Engravings Remove constraint Genre: Engravings Subject Engines of war Remove constraint Subject: Engines of war

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    • 1588

    Composed of three large crossbows. Uses tension to launch arrows, pyrotechnic projectiles, and balls of rock, lead, and iron to defend a city or fortress.

    Mechanics: hand crank; spur gear and lantern.

    • 1588

    Uses tension to launch arrows, pyrotechnic projectiles, balls, and rocks to defend a city or fortress.

    Mechanics: roller thrust bearing; projectile throwing engine; trigger.

    • 1588

    For launching rocks and fireballs to defend a city or fortress.

    Mechanics: hand crank; worm and worm gear; spur gear and recessed face gear; projectile throwing engine.

    • 1588

    For filling ditches and moats with barrels, bales, sacks, and debris, and for defending a city or fortress.

    Mechanics: winch; trigger.