The PapinKevin MacLean Oceanwood, wire, surplus obsolete hardware, found objects, watch parts, metal scraps 6. 5" X 13" X 2. 75" Primarily known for his invention of the steam digester, the designer of the namesake PAPIN also was fascinated by submarines. This wood and hammered metal submersible relied on 8 oarsmen for propulsion and a bellows bladder that pumped air from above by means of a tether. A complicated ballast system was also employed to allow the
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