By Tamara Shiloh

The debate over whether enslaved African Americans could receive U.S. Government-issued patents was still unfolding when the second African American to hold a patent, Henry Blair, received his first patent in 1834.

The first African American to receive a patent was Thomas Jennings in 1821 for his discovery of a process called dry scouring, also known as dry cleaning.

Blair was born in Glen Ross, Maryland, in 1807. He was an African American farmer who received two patents. Each patent was designed to help increase agricultural productivity.

There is very little information about his life prior to the inventions. It is known that he was a farmer who invented machines to help with planting and harvesting crops. There is no written evidence that he was a slave.

However, it is apparent that he was a businessman.

Being a successful farmer required consistent production. Blair figured out a way to increase his harvest. He did this with two inventions. His first invention was a corn planter. The planter had the same structure as a wheelbarrow, with a box to hold the seed and rakes dragging behind to cover them. This machine allowed farmers to plant their crops more economically.

Blair could not write. As a result of his illiteracy, he signed the patent with an “X”. He received his first patent for the corn planter on Oct. 14, 1834.

Two years later, taking advantage of the boost in the cotton industry, he received his second patent. This time for a cotton planter. This machine worked by splitting the ground with two shovel-like blades that were pulled along by a horse. A wheel-driven cylinder behind the blades placed seeds into the freshly plowed ground. Not only was this another economical and efficient machine. It also helped with controlling weeds and put the seeds in the ground quickly Henry Blair received his second patent on Aug. 31, 1836

During this time, the United States government passed a law that allowed patents to be granted to both free and enslaved men. However, in 1857, this law was contested by a slaveowner. He argued that slaveowners had a right to claim credit for a slave’s inventions. His argument was that since an owner’s slaves were his property, anything that a slave owned was the property of the owner also.

In 1858 the law changed, and patents were no longer given to slaves. However, the law changed again in 1871 after the Civil War. The patent law was revised to permit all American men, regardless of race, the right to patent their inventions.

Blair died in 1860.

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