Inventions Mary Hallock-Greenewalt

hallock greenewalt, half-length portrait, @ electric light color organ , invented

her earliest attempts @ creating art entailed construction of automated machine colored lights synchronized records. produced unsatisfactory result, leading development of instrument played live.

her color organ, named sarabet after mother, required invention of number of new technologies. received 9 patents patent office them. among these devices non-linear variety of rheostat, patent infringed general electric , other companies. sued them infringement , won in 1934. sarabet went through series of refinements between 1916 , 1934. in 1946 published book on invented art of light-color playing called nourathar: fine art of light-color playing.

hand-painted films

michael betancourt has noted hallock-greenewalt produced earliest hand-painted films known still exist. however, these not movies films produced performed earliest version of sarabet machine automatic accompaniment records. construction, single viewer looked down machine @ film itself, resembled edison s kinetoscope. device music visualizer of type included computer audio-players. though these films not designed motion pictures, produced templates , aerosol sprays, producing repeating geometric patterns in same way hand painted films of len lye 1930s.