EditorialThe "Comte d'Artois" balloon with propellers built by chemical factory directors Leonard Alban and Vallet of Javel, August 1785. Woodblock engraving from Louis Figuier's "Les Merveilles de la Science: Aerostats" (Marvels of Science: Air Balloons), Furn...
EditorialModel of the monitor Tiger Model of an Ironclad Monitor, Polychromed block model of an armored monitor. The model has a vertical stern, a pointed cruiser fence with a rudder with round rudder blade, and two three-bladed propellers. On the deck there ar...
EditorialThe "Comte d'Artois" balloon with propellers built by chemical factory directors Leonard Alban and Vallet of Javel, August 1785. Woodblock engraving from Louis Figuier's "Les Merveilles de la Science: Aerostats" (Marvels of Science: Air Balloons), Furn...
EditorialDUPLEX RUDDER AND SCREW-PROPELLER; This invention has been patented by Captain E.I. Carpenter, and the engraving represents a vessel with two rudders and two screw propellers, 1851 engraving.