The patent office awards U.S. Patent No. 743,801 to a Birmingham, Alabama woman named Mary Anderson for her “window cleaning device for electric cars and other vehicles to remove snow, ice or sleet from the window.” When she received her patent, Anderson tried to sell it to a Canadian manufacturing firm, but the company refused: The device had no practical value, it said, and so was not worth any money. Though mechanical windshield wipers were standard equipment in passenger cars by around 1913, Anderson never profited from the invention.
As the story goes, on a freezing, wet winter day around the turn of the century, Mary Anderson was riding a streetcar on a visit to New York City when she noticed that the driver could hardly see through his sleet-encrusted front windshield. Although the trolley’s front window was designed for bad-weather visibility—it was split into parts so that the driver could open it, moving the snow- or rain-covered section out of his line of vision—in fact the multi-pane windshield system worked very poorly. It exposed the driver’s uncovered face (not to mention all the passengers sitting in the front of the trolley) to the inclement weather, and did not improve his ability to see where he was going in any case.
