Brenkert Brenograph Jr.

The Brenkert Brenograph Jr. was a projector used in atmospheric theatres to project moving clouds over ceilings painted blue.

The projector operated automatically with a universal electrical motor, capable of varying speeds.

It used a powerful 1500 watt light bulb to display nimbus and cumulus clouds.

The clouds were images on a strip of negatives that moved continuously in front of the light.

The projector was small enough to be hidden in the theatre architectural design so that the illusion of floating clouds would be maintained.