| You are here: | About>Business & Finance>Inventors> Famous Inventors> Inventor Biography Sites> Inventors A to Z Listings> W Start Inventors> Mary Walton - Inventions and Biography of Mary Walton |
![]() | Inventors |
![]() Cooper Institute - Elevated Railroad. Mary WaltonSuggested ReadingMary WaltonMary Walton developed a method of deflecting smoke stack emissions.In 1879, Mary Walton patented a method of deflecting smoke stack emissions (U.S. patent #221,880) through water tanks and later adapted the system for use on locomotives. Mary Walton also invented a noise reduction system for elevated railroads in New York City. In the 1880s, many cities developed a mass transit system using noisy elevated trains. To reduce the noise, Mary Walton invented a sound-dampening system that cradled the track in a wooden box lined with cotton and then filled with sand. She received U.S. patent #237,422 for the system on February 8, 1881, and later sold the rights to the Metropolitan Railroad of New York City.
Continue > Indutrial RevolutionMary WaltonSuggested Reading |
|
All Topics | Email Article | | | ![]() |
| Advertising Info | News & Events | Work at About | SiteMap | Reprints | Help | Our Story | Be a Guide |
| User Agreement | Ethics Policy | Patent Info. | Privacy Policy | ©2008 About, Inc., A part of The New York Times Company. All rights reserved. |



