Flying machine patent,1889. Artwork showing a device invented by Reuben Spalding to allow a person to fly via the aid of a balloon and bird-like wings and tail. It is not known whether a full scale version was ever made. Machines that fly by wing flapping are known as ornithopters | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / US Patent And Trademark Office |
Taille de l’image : | 2438 px × 3659 px |
Model Release : | Non requis |
Restrictions : | - |