Loom reed comb and archimedes’ screw: what they have in common

1. Step 1. Loom reed comb — is part of — Loom. It beats the weft into the cloth.
2. Step 2. Loom — evolved into — Power loom. A mechanized loom.
3. Step 3. Power loom — has part — Cam. Cams lift the heddles.
4. Step 4. Cam — is part of — Sewing machine. Cams drive the fabric feed.
5. Step 5. Sewing machine — has part — Crank. A crank turns rotation into the stroke of the needle.
6. Step 6. Crank — is part of — Archimedes’ screw. A handle or rotary drive.

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