Who Was The Only U.S. President To Hold A Patent?
In addition to his skill as a statesman and leader, Abraham Lincoln was a talented mariner and a life-long tinkerer. It was a merging of these last two that led Lincoln to work quietly in his spare time on a device intended to assist boats on the Mississippi River free themselves from shoals.
The device relied on buoyant chambers attached to sturdy timbers being forced down into the water in order to raise the mass of the boat up above the shoal–think of the mechanism like a pontoon boat that could lift itself upon its pontoons to clear obstacles in the water.
Although Lincoln applied for and received a patent for his design, the device was never manufactured or brought to market.
The First Female Computer Programmers Were Called What?
Cryptozoologists Are Focused On The Study Of What?
Which Famous American Building Is More Radioactive Than A Nuclear Power Plant?
Rudolph The Red-Nosed Reindeer First Appeared In A?
During The 20th Century, Blindness In Premature Babies Was Triggered By Excessive Administration Of?
In Order To Prove How The Illness Was Caused, A Scientist Purposely Gave Himself?
The Only Author To Have A Simultaneous Chart Topping Book, Movie, And TV Show Is?
The First Station In The U.S. To Broadcast Digital TV Was Located In?
The Most Accurate Clock Built To-Date Relies On?