CompressedAirLocomotiveNearTunnelEntranceInAirolo Section1 AdolpheBraun1811to1877
The shown pneumatic locomotive stored energy in the form of compressed air in the large pressure container up front. The released expanding air was used to operate the motor of the locomotive. Steam driven compressors were readily available at the time of the construction (1872-1880) and for example in use to drive pneumatic drills. Most probably these compressors were also used to load the pressure containers outside the tunnel. (The first DC motors were just being developed and the AC motor was patented by Tesla only in 1888.) In contrast to steam engines the pneumatic engines did not require additional ventilation of the tunnel during its construction. Even using pneumatic technology the tunnels were poorly ventilated adding to the poor work conditions.
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Adolphe BraunAdolphe Braun byl francouzský textilní designér a fotograf. .. pokračovat ve čtení