Gramophone and bellows: what they have in common

1. Step 1. Gramophone — has part — Mainspring. A spring drive.
2. Step 2. Mainspring — is part of — Music box. A mainspring turns the cylinder.
3. Step 3. Music box — has part — Pinned cylinder. The cylinder’s pins pluck the teeth of the comb.
4. Step 4. Pinned cylinder — is part of — Barrel organ. A pinned cylinder sets the tune.
5. Step 5. Barrel organ — has part — Bellows. Bellows feed air into the pipes.

Open Evothings