Wedge

principle · 1000000 BC · Stone Age

A simple machine: an inclined plane that pushes material apart.

Where it is used

Hand axe — is used in. The cutting edge of a hand axe works like a wedge.
Plough — is used in. The ploughshare parts the soil like a wedge.
Nail — is used in. The point of a nail pushes the wood apart.
Scissors — is used in. The blades cut like wedges.
Zip — is part of. The slider works like a wedge, bringing the teeth together and pushing them apart.
Safety razor — is used in. The blade is a wedge.
Knife — is used in. The blade cuts like a wedge.
Axe — is used in. The blade of an axe is a wedge.
Chisel — is used in. The cutting edge is a wedge.
Shovel — is used in. The blade enters the ground like a wedge.
Icebreaker — is used in. The bow rides up onto the ice and crushes it.
Scalpel — is used in. The blade.
Stone tool — is used in. A sharp edge works like a wedge.
Harpoon — is used in. A barbed point enters like a wedge and does not come back out.
Needle — is used in. The point pushes the material apart like a wedge.
Fish hook — is used in. A barbed point enters like a wedge and holds the fish.
Adze — is used in. The blade of an adze is a wedge.
Hoe — is used in. The blade of a hoe enters the soil like a wedge.
Saw — is used in. Each tooth of a saw is a small wedge.
Lawn mower — is used in. The blades cut grass like scissors.
Can opener — is used in. The blade slits the tinplate.
Sickle — is used in. The cutting edge is a wedge.