USA HISTORY

WESTWARD EXPANSION INDUSTRIALIZATION URBANIZATION 1870 1900

SECOND INDUSTRIAL REVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Name something Elijah McCoy invented?
A
A device for oiling engines on trains
B
The telephone
C
The telegraph
D
The T.V.
Explanation: 

Detailed explanation-1: -He invented an automatic lubricator for oiling the steam engines of locomotives and ships, patenting it in 1872 as “Improvement in Lubricators for Steam-Engines” (U.S. Patent 129, 843).

Detailed explanation-2: -What he came up with was an automatic lubricator that used steam pressure to pump oil where it was needed. McCoy patented his invention, known as an “oil-drip cup, ” in 1872, and the device was an instant success.

Detailed explanation-3: -His job was to walk the length of the train, oiling its axles, bearings, and other moving parts regularly. McCoy quickly realized that his job could be done more efficiently, so he developed a lubricating cup that would automatically drip oil onto moving parts.

Detailed explanation-4: -McCoy began experimenting with automatic lubricators. The trick was to create a mechanism with a large reservoir that fed oil into the engine one drip at a time. He patented his first lubricator in 1872 and quickly followed it with five more improvements.

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