Hammer

: The earliest hammers were simple stones used for crushing and hammering. It took approximately 2.5 million years for early ancestors to begin attaching handles, typically made of sticks, to these stone heads.

: Heads made of softer materials like rubber, wood, or plastic to strike objects without damaging the surface. hammer

: The first patent for the modern hammer—featuring a metal head and a hardwood handle—was granted to Theodore H. Gilman in 1875. The Mechanics of Impact : The earliest hammers were simple stones used

: A heavier, longer version of the claw hammer with a straighter claw, used for prying boards and heavy construction. : The first patent for the modern hammer—featuring

: As metallurgy advanced, hammer heads transitioned from stone to bronze around 3,000 BCE, and eventually to iron and steel by 1,200 BCE.

: Some modern designs, such as those by manufacturers like Fiskars , incorporate shock-absorbing materials or foam inserts to insulate the user's hand from the vibration of impact. Common Types of Hammers

: The most common household tool, featuring a curved "claw" for pulling nails.