In 1910 , the French locomotive engineer Leon Gaumant demonstrated his strait - and - film synchronizing Chronophone system at the Gaumant Palace — a 5,500 seat reconstruction of the Hippodrome , which was at the prison term Europe ’s large movie theatre — in Paris , FR .
At the meter , move pictures with synchronized audio were limited in length by the acting fourth dimension of a acoustic gramophone disk — the farseeing was 200 foot , at 16 physical body - per - minute .
Gaument ’s Chronophone had two gramophone platters , between which a deft operator could switch back and off — a canny solution !
mark the duplicate gramophones , drive from a common electric motor between them . An aviation hosiery go to each valvebox from the control valve just under the air pressure gauge … this ascendency valve allowed the wheeler dealer to crossfade between the two gramophones .
tight atmosphere enter the valvebox through the cardinal pipe , and exits through the two pipes at each side .
mark the sloped telegram and spring to reduced the otherwise enormous down tracking force .
tick off outthis pagefor more on this and the history of other compressed airwave amplifiers . [ MakezineviaAQPL43 ]
Daily Newsletter
Get the best technical school , skill , and culture news in your inbox daily .
News from the future , delivered to your present .
Please select your desired newssheet and submit your e-mail to upgrade your inbox .
