Spoked wheel and typewriter: what they have in common

1. Step 1. Spoked wheel — has part — Spoke. Spokes connect the rim to the hub.
2. Step 2. Spoke — is part of — Umbrella. Ribs hold the canopy.
3. Step 3. Umbrella — uses — Lever. The folding mechanism is levers.
4. Step 4. Lever — is part of — Typewriter. Each key is a system of levers.

Open Evothings