Broom twigs and screw press: what they have in common

1. Step 1. Broom twigs — is part of — Broom. A bundle of twigs or sorghum.
2. Step 2. Broom — is made of — Plant fibre. A broom is tied from twigs and grasses.
3. Step 3. Plant fibre — is used in — Loom. Cloth is woven from threads spun from fibres.
4. Step 4. Loom — includes — Jacquard loom. A loom with punched cards.
5. Step 5. Jacquard loom — works like — Gutenberg printing press. An analogy, not proven influence: both set type and a chain of punched cards are a replaceable pattern that a machine reproduces over and over.
6. Step 6. Gutenberg printing press — has part — Screw press. Gutenberg adapted the screw press known from pressing grapes.

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