Q:

When was Osbourn Dorsey born?

A:

Quick Answer

According to Civil War Washington and an official petition for freedom from slavery, Osbourn Dorsey was "about eight months" old on May 19, 1862. This means his estimated birth date is around Sept. 19, 1862, but the exact date is not known.

Know More

Full Answer

Dorsey was a black inventor who received patent #210,764 for a door holding and closing device on Dec. 10, 1878. The first documented doorknob patent was issued the same year. According to About.com, other black inventors around Dorsey's time were James Henry Dunnington, who received a patent for a horse detacher on Mar. 16, 1897, and Phillip Downing, who received a patent for a street railway switch on June 17, 1890 and two separate patents for a letter box on Oct. 27, 1891.

Learn more about Inventions

Related Questions

  • Q:

    When were the Wright brothers born?

    A:

    Orville Wright was born on Aug. 19, 1871, and Wilbur Wright was born on April 16, 1867. The Wright brothers were American inventors credited with building the first airplane and the first controlled, powered and sustained flight on Dec. 17, 1903.

    Full Answer >
    Filed Under:
  • Q:

    When was Lloyd P. Ray born?

    A:

    African-American inventor Lloyd P. Ray was born in 1860. His wife, Emma J. Ray, was born in 1859. Lloyd P. Ray was an inventor who created an improved version of the standard dustpan.

    Full Answer >
    Filed Under:
  • Q:

    What is Robert Boyle's middle name?

    A:

    Robert Boyle was born on Jan. 27, 1691 in County Waterford, Ireland, and there are no records indicating that Boyle had a middle name. He was a natural philosopher, chemist, inventor, theological writer and a preeminent figure in 17th century intellectual culture.

    Full Answer >
    Filed Under:
  • Q:

    When was Isaac Newton born?

    A:

    Sir Isaac Newton was born on Jan. 4, 1643. He was the son of Isaac Newton and Hannah Ayscough Newton, though his father died shortly before he was born.

    Full Answer >
    Filed Under:

Explore