He published an article on "Motion Pictures by Wireless" in 1913, but it was not until 1923 that he transmitted moving silhouette images for witnesses, and it was June 13, 1925 that he publicly demonstrated synchronized transmission of pictures and sound.
His mechanical technologies (also pioneered by John Logie Baird) were later overtaken by electronic television such as devised by Vladimir Zworykin and Philo Farnsworth.
In 1931 Jenkins Television Corporation was acquired by Lee DeForest.
He is today one of the more obscure pioneers of television,but in his day his contribution was of great importance.