Abstract: A winged aircraft attachable to the body of a pilot including multiple jet engines whereby it may be propelled into and sustained in flight, having angularly adjustable side fins, having pilot operable controls for simultaneously controlling directional issuance of jet streams issuing from the engines and angular adjustment of the fins, including a support for the head of the pilot, and including a support for his feet.

Abstract: A single winged aircraft adapted to be attached to the back of a pilot, including a jet fuel engine whereby it may be propelled into space and sustained in flight, and provided with manually operable controls for controlling operation of ailerons and the directional issuance of the jet stream exhausting from the engine, whereby the aircraft may be directionally controlled in flight by the pilot.

Abstract: A bicycle having a frame extended rearwardly and beyond the rear wheel of the bicycle provided in the extended portion with a pedal crank driven sprocket connected by an endless drive chain with a sprocket gear carried by the rear wheel, the extended portion being in one form of the invention an integral part of the frame, or being in a modified form of the invention an accessory unit separably attachable to the conventional frame of a bicycle, in which modified form the sprocket gear is connectible by the drive chain, at the election of the rider, with either the pedal crank driven sprocket in the accessory unit or with the normal pedal crank driven sprocket in the conventional frame.