USA HISTORY

Detailed explanation-1: -The U.S. Patent and Trademark office in Detroit bears the name of Elijah McCoy, a pioneering African-American inventor. McCoy was born in the mid-1840s, nearly 170 years before the office opened. McCoy had more than 50 patents to his name. He’s best known for inventing an automatic lubricator that was used on trains.

Detailed explanation-2: -Elijah McCoy received his first patent for an automatic lubricating device in 1872. Previously, engines had to be stopped before necessary lubrication could be applied. McCoy’s invention allowed engines to be lubricated while they ran, saving precious time and money.

Detailed explanation-3: -He continued to invent until late in life, obtaining as many as 57 patents; most related to lubrication, but others also included a folding ironing board and a lawn sprinkler.

Detailed explanation-4: -Benjamin Bradley (1830-?) While living in Annapolis Bradley worked for a printing company at a young age. At the age of 16 he demonstrated his great skill in mechanical engineering. He constructed a model of a steam engine out of two pieces of steel, a gun barrel, and pewter.

Detailed explanation-5: -Elijah McCoy (May 2, 1844–October 10, 1929) was a Black American inventor who received more than 50 patents for his inventions during his lifetime. His most famous invention was a cup that feeds lubricating oil to machine bearings through a small tube.