Evolution of the HammerEvolution of the Hammer

By: Kris HalvorsonBy: Kris Halvorson

Hour:6Hour:6

11-6-0711-6-07

What is a Hammer?What is a Hammer?

A hammer is a simple tool in which a heavy piece of A hammer is a simple tool in which a heavy piece of steel is connected to a wood or aluminum handle.steel is connected to a wood or aluminum handle.

The design allows the user to hit an object, ie: nail, with The design allows the user to hit an object, ie: nail, with a greater force than if he/she used their own hand.a greater force than if he/she used their own hand.

It is the momentum created by the swing of the handle It is the momentum created by the swing of the handle that makes the hammer so effective. that makes the hammer so effective.

The hammer is important to everyone, because a very The hammer is important to everyone, because a very large amount of the things we have: houses, bridges, large amount of the things we have: houses, bridges, cabinets, beds, etc.cabinets, beds, etc.

What was/is it used for?What was/is it used for?

• Hammers are used to construct structures. Hammers are used to construct structures. A hammer can also be used for removing A hammer can also be used for removing pieces of construction material from pieces of construction material from others.others.

• Thousands of years ago, people used their Thousands of years ago, people used their hammers to break bones of animals, as hammers to break bones of animals, as well as to hunt. well as to hunt.

Hammer Time lineHammer Time line

Current(PneumaticHammer)

Claw hammer

Hammer made with handle

First rock/stone hammer

When was the hammer first When was the hammer first invented?invented?

The origin of the first hammer cannot The origin of the first hammer cannot precisely be calculated.precisely be calculated.

There is evidence of the hammer showing There is evidence of the hammer showing up in history, as early as the caveman.up in history, as early as the caveman.

What materials were used to make What materials were used to make hammers years ago?hammers years ago?

Long ago, hammers were made from rocks and other Long ago, hammers were made from rocks and other hard natural products.hard natural products.

When handles were first introduced, they were made of When handles were first introduced, they were made of sticks/wood from trees.sticks/wood from trees.

Handles were also sometimes made from bones from Handles were also sometimes made from bones from animalsanimals

Ancient hammersAncient hammers

Improvements/innovationsImprovements/innovations

Hammers are now designed to be more Hammers are now designed to be more comfortable for the user. This is accomplished comfortable for the user. This is accomplished by making a rubber handleby making a rubber handle

Claw hammers have a hook on the head, which Claw hammers have a hook on the head, which is used for extracting nails.is used for extracting nails.

Air hammers (pneumatic) take all of the work out Air hammers (pneumatic) take all of the work out of manually pounding nails.of manually pounding nails.

Sledge hammers have heavier heads and longer Sledge hammers have heavier heads and longer handles, designed to produce more force.handles, designed to produce more force.

Types of hammersTypes of hammers

There are a number of different hammers. There are a number of different hammers. These include:These include:

The claw hammerThe claw hammerSledge hammerSledge hammerPneumatic hammerPneumatic hammerBall-peen hammerBall-peen hammerMalletMalletMaul and more.Maul and more.

Materials used today.Materials used today.

There are a variety of different materials There are a variety of different materials used in making a hammer. Some of these used in making a hammer. Some of these materials include: steel, aluminum, wood, materials include: steel, aluminum, wood, rubber, fiberglass, etc.rubber, fiberglass, etc.

Air hammers however are much more Air hammers however are much more complex. They use steel parts, rubber complex. They use steel parts, rubber fittings, hoses, and other specific parts.fittings, hoses, and other specific parts.

Why we use hammersWhy we use hammers

We use hammers because it takes out most of the work We use hammers because it takes out most of the work needed in constructing something.needed in constructing something.

BibliographyBibliography

http://www.flipse.com/house/framing2.jpghttp://www.flipse.com/house/framing2.jpghttp://www.hammernet.com/hammers.htmhttp://www.hammernet.com/hammers.htmhttp://inventors.about.com/library/inventorshttp://inventors.about.com/library/inventors

/bltools.htm/bltools.htmhttp://www.diydata.com/tool/hammer/hamhttp://www.diydata.com/tool/hammer/ham

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