On January 2, 1906, Carrier was granted U.S. Patent 808,897 for an Apparatus for Treating Air, the world's first spray-type air conditioning equipment. It was designed to humidify or dehumidify air, heating water for the first function and cooling it for the second.
The Wright brothers wrote their 1903 patent application themselves, but it was rejected. In January 1904 they hired Ohio patent attorney Henry Toulmin, and on May 22, 1906, they were granted U.S. Patent 821393 for "new and useful Improvements in Flying Machines".
In September, riots broke out in Atlanta, precipitated by unfounded allegations of black men assaulting white women. This was a catalyst for racial tensions based on a job shortage and employers playing black workers against white workers. Ten thousand whites rampaged through Atlanta, beating every black person they could find, resulting in over 25 deaths.