Jacks



Jacks were mechanical machines that were used for lifting heavy objects.

For example, a jack for a car was used to raise the automobile high enough off of the ground so that the tire could be changed, or the rims could be removed.

Some jacks could be operated with hydraulic power.

Earth-1A
Doctor Lucius LeBon's circus wagon had a jack in it, which was a hydraulic lift that he used to lift up his assistant named Wilbur when he used his red beam.

Doctor LeBon's Planet-Splitter also had a jack, which lifted the Ray Gun up through the doorway of the dome at the top of his observatory.

External Link

 * Jacks at Wikipedia