Elijah McCoy patented over fifty inventions

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McCoy continued to be intrigued in continuing to improve his technology and to develop more. He thus ended up selling some percentages of rights to his patent to finance developing a workshop. He made ongoing improvements to the “lubricating cup.” The patent application identified it as a device which “provides for the continuous flow of oil on the gears and other moving parts of a machine in order to keep it lubricated properly and continuous and thereby do away with the necessity of shutting down the machine periodically.” The gadget would be altered and modified in order to apply it to different types of machinery. Variations of the cup would soon be put to use in steam engines, naval vessels, oil-drilling rigs, mining products, in factories and construction sites.

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