PFC GREEN, ALEX J.
B CO 1/325th AIR
2 AUGUST 2013
The Hammer
A hammer is a tool meant to deliver an impact to an object. The most common uses for hammers are to drive nails, fit parts, forge metal and break apart objects. Hammers are often designed for a specific purpose, and vary in their shape and structure. The term hammer is also used for some devices that are designed to deliver blows like the cap lock mechanism of firearms.
The hammer is a basic tool of many professions. The usual features are a handle and a head, with most of the weight in the head. The basic design is hand-operated, but there are also many mechanically operated models, such as steam hammers, for heavier uses.
History of the Hammer
The use of simple tools dates to about 2,400,000 BCE when various shaped stones were used to strike wood, bone, or other stones to break them apart and shape them. Stones attached to sticks with strips of leather or animal sinew were being used as hammers by about 30,000 BCE during the middle of the Paleolithic Stone Age. The hammer's archeological record shows that it may be the oldest tool for which definite evidence exists of its early existence. Stone hammers that date back to 2,600,000 BCE have been found.
Types of Hammers
In general, hammers have metal heads and are used to strike metal objects. The curved claw hammer used to drive nails into wood is one example. Other hammers include the framing hammer with a straight claw that can be driven between nailed boards to pry them apart. It is often used in heavy construction where temporary forms or supports must be removed. The ball peen hammer has a semi-spherical end and is used to shape metal. A tack hammer is one of the smallest hammers. It is used by upholsterers to drive small tacks into wood furniture frames. A sledge hammer is one of the largest hammers. It usually has a long handle and is used for driving spikes and other heavy work. Other modern hammers include