McCoy's automatic lubricators enabled trains to run longer and more efficiently, reducing downtime for maintenance and oiling. This led to faster and more reliable transportation of goods and passengers.

McCoy's inventions were also adopted by steamships, improving their performance and extending their operational range. This contributed to the growth of maritime trade and travel.

The increased efficiency and reliability of transportation systems, facilitated by McCoy's inventions, played a significant role in the overall growth of American industry and the expansion of the national economy.