Seed drill and piston pump: what they have in common

1. Step 1. Seed drill — uses — Grain. It sows grain in rows.
2. Step 2. Grain — is used in — Grain elevator. It stores and transfers grain.
3. Step 3. Grain elevator — has part — Watt steam engine. Dart’s first elevator was steam-driven.
4. Step 4. Watt steam engine — evolved from — Piston pump. The first steam engines (Newcomen’s) pumped water out of mines by driving pumps.

Open Evothings