Fourdrinier wire table and aeroplane: what they have in common

1. Step 1. Fourdrinier wire table — is part of — Paper machine. An endless mesh forms the web.
2. Step 2. Paper machine — works like — Conveyor belt. Fourdrinier’s endless wire mesh moves like a conveyor belt, forming the web of paper.
3. Step 3. Conveyor belt — works like — Escalator. An escalator is a conveyor with steps.
4. Step 4. Escalator — has part — Roller chain. A chain pulls the steps.
5. Step 5. Roller chain — is part of — Wright Flyer. The propellers were driven from the engine by bicycle chains — the Wrights were bicycle makers.
6. Step 6. Wright Flyer — is a kind of — Aeroplane. The first aeroplane.

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