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...s made from about early to mid 1940s. It is powered by a 2-stroke Villers gasoline engine. It has an 8 port chopper and stator that can have the pitch and so [[Category:Gasoline powered]][[Category:Siren]][[Category:Mechanical]][[Category:Disa]] ...

...Company from 1942 to 1967. The siren would be offered in two variants, the gasoline-engine driven BN44 and the electric-motor driven BN44E. ...d variant being discontinued sometime around 1953 or 1954. Of the gasoline powered variants, only five are known to still exist. ...

...ation of what would later become the Chrysler Air Raid Siren. This 12-port gasoline siren was Bullard's very first attempt to meet the War Production board's r ...s, including a dual rotor siren that uses a rotating stator ring that when powered, covers all of the ports and nearly silencing the siren instantly. This all ...

...igh School on Poplar Avenue, which still runs today. Originally powered by gasoline, the siren was eventually converted to run off of electricity. ...

...engine. This unit was offered in single tone and dual tone. The blower was powered by an Onan opposed twin cylinder, four cycle engine. The blower size can be ...