Trip hammer and paper machine: what they have in common

1. Step 1. Trip hammer — evolved into — Steam hammer. The mechanization of forging.
2. Step 2. Steam hammer — evolved into — Forging press. Pressing instead of striking.
3. Step 3. Forging press — has part — Hydraulic cylinder. Working cylinders.
4. Step 4. Hydraulic cylinder — is part of — Tunnel boring machine. Hydraulic cylinders push the machine forward.
5. Step 5. Tunnel boring machine — has part — Conveyor belt. Spoil is removed by a conveyor.
6. Step 6. Conveyor belt — works like — Paper machine. Fourdrinier’s endless wire mesh moves like a conveyor belt, forming the web of paper.

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