A hand-cranked Neo-Cyclostyle copying machine from 1890 is fully operational and demonstrated on video by the YouTube channel Old Typewriters and Calculators. This is not a museum piece behind glass. It runs.
The mechanism is a stencil-based screen printing system. A wax-coated sheet is inscribed with special pens, removing the coating where ink should pass. The upper rollers carry ink, the lower roller charges itself on the retraction stroke, then deposits a fresh layer through the wax stencil onto paper on the next forward cycle. One template survives many copies. The full roller sequence and ink transfer logic are worth watching in real time, not just reading about.
Hackaday covered a related Cyclostyle variant in January 2024. This 1890 machine predates those later automated designs, making it a mechanical ancestor worth understanding on its own terms. The original article links both the video and the Wikipedia entry on Cyclostyle copiers for anyone who wants the full lineage.
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