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.
The U.S. Constitution brought together, in one remarkable document, ideas from many people and several existing documents, including the Articles of Confederation and Declaration of Independence. Those who made significant intellectual contributions to the Constitution are called the Founding Fathers of our country. Many of the United States Founding Fathers were at the Constitutional Convention, where the Constitution was hammered out and ratified. George Washington, for example, presided over the Convention. James Madison, also present, wrote the document that formed the model for the Constitution. Other U.S. Founding Fathers were not there, but made significant contributions in other ways. Thomas Jefferson, who wrote the Declaration of Independence, was serving as ambassador to France at the time of the Convention.