In these, valves are on the side of the combustion chamber, in the engine block, and fuel and air enter from the side and exhaust exits out the same side. A cross section of this type of combustion chamber looks like an upside down letter L. So, flatheads are sometimes known as L-head engines.
They are American iconsâthey're on our dollars and coins, they are the subject of our monuments, and we live our daily lives in the world their ideas helped create. America's Founding Fathers include George Washington, John Adams, Thomas Jefferson, James Madison, Alexander Hamilton, James Monroe and, of course, Benjamin Franklin.
We all know about Thomas Jefferson and Benjamin Franklin, true entrepreneurs before the word was even in use. But what about the other Founding Fathers? Curious about the paths the signatories followed, I found an 1829 book, Lives of the Signers to the Declaration of Independence by Rev. Charles A. Goodrich. As it turns out, most of those who signed the Declaration of Independence started or ran their own businesses.