Your chronology is backwards. Newcomen's steam-engine, the first commercially successful one, was 01712. James Watt's steam engine was 01776. Trevithick's hi

Your chronology is backwards. Newcomen's steam-engine, the first commercially successful one, was 01712. James Watt's steam engine was 01776. Trevithick's high-pressure engine patent, which is the point at which steam-engines started needing pressure vessels as opposed to vacuum vessels, was 01802. Trevithick's first steam-powered train was 01804. The Bessemer process was 01856, after the end of the steam-engine-driven First Industrial Revolution. But steel was still not in wide use for pressure vessels until I think about 01880, but I'm less sure of that. Diesel engines are internal combustion engines that do not require spark plugs or wiring. Ceramics are from about 12000 years ago, and copper is from about 8500 years ago. The hard part about wires is more the insulation than the wire itself. Did you get your errors from Winchester's book? I usually think of him as more reliable than that.