Rock drill
device · 1861 · Industrial Revolution
Pneumatic drilling of rock (Sommeiller).
What it is made of
- Piston — has part. A percussion piston.
- Drill steel rod with bit — has part. A steel rod with a bit.
- Rotation mechanism — has part. It rotates the rod between blows.
Principles and materials it uses
- Compressed air — uses. Pneumatics.
- Cast iron — is made of. The casing is cast iron.
- Steel — is made of. Drill bits are steel.
Where it is used
- Tunnel — is used in. Driving the Mont Cenis tunnel.
History: what it evolved from and what it influenced
- Jackhammer — evolved into. A hand-held pneumatic tool.