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abandoned action apparatus appears applied arrangement attached boat boiler bottom building cable carried cause centre close communication connected consists construction covered cylinder Dated July described direction drawings effect employed engine equal experiments fact feet fire fitted fixed force frame give given heat Improvements inches increased invention inventor iron June length less lever London lower machine machinery manufacture material matter means mechanical meeting ments metal motion naval object obtained Office pass Patent completed person piece pipe placed plates portion position practical present pressure produce protection question rails railway receive reference resistance rollers round screw shaft ships side steam suitable supply surface taken telegraph tion tons tube turned valve vessel weight wheel whole wood