what year did andrew jackson beard invent the rotary steam engine
Andrew Jackson Beard On December 15, 1887, Beard invented another plow and sold it for $5,200. With this money he went into the real estate business and made about $30,000. In 1889, Beard invented a rotary steam engine, patented on July 5,1892. He claimed that his steam engine was cheaper to build and operate than steam engines and it would not explode. While Beard worked on his rotary steam engine, he experimented with perhaps his finest invention, an automatic car coupler idea.