Did elijiah mccoy make a profit off of his invention?

Yes, Elijah McCoy did make a profit from his invention, the automatic lubricator, which significantly improved the efficiency of steam engines. However, he faced challenges with patent infringement, as many manufacturers produced similar devices without his permission. Despite this, McCoy's name became synonymous with quality, leading to the phrase "the real McCoy," which helped him gain recognition and some financial success. Overall, while he encountered difficulties, he achieved a degree of profitability from his innovations.