Douglas Self, audio design, Subjectivism, Combat Cutlery, Compressed-Air Amplifiers, ElectroMechanical Amplifiers, optical telegraphs, Auxetophone, heliographs, voicepipes, Monowheels, Diwheels, Schilovski Gyrocar, Gyrocars, Brennan Gyro-Monorail, Steam-Powered Bicycles, Rocket-Powered Bicycles, Unusual Bicycles, Unusual Tricycles, Quadcycles, quadricycles, Steam Lawnmowers, Steam Aeroplanes, Unusual Steam Locomotives, Armoured Narrowboat, Jet-Propelled Paddleboat, Helicogyre, Cyclogyro, Propeller-Driven Car, Propeller-Driven Sleigh, Propellor-Driven Locomotives, Compressed-Air Vehicles, Rotating Steam Boilers, Internal Combustion Boiler, Rotary Steam Engines, Tower Spherical Engine, Disc Engines, Vibratory Steam Engines, Parsons Epicyclic Engine, Rotary Internal Combustion Engines, Axial IC engines, Cam engines, Rotary Valve IC Engines, High-Speed Steam Engines, Uniflow Steam Engines, Still Steam-Diesel Engine, Ammonia Motor, Zeromotor, Boiling Petrol, Alcohol Motor, Carbon Disulphide Engines, Soda Engines, Carbonic Acid Engines, Odd Working Fluids, Ether Engines, Water Engines, Water Motors, Thermomagnetic Motors, Clockwork, Dog Engine, Electromagnetic Engines, Mechanical Rectification, Thermo-Electric Generators, Gearwheels From Hell, Electrostatic Boiler, Aerosteam engine, Square piston engine, Perfect, Tye, Roswell