The Cubitt was released for other works, as it participated in the main engineering works of the time. As a result, he obtained the title of sir and was president of the Institute of Civil Engineers, among others. He helped build canals, dikes, railways -- and was chief engineer of the Crystal Palace building at Hyde Park in London. This device devised for jail made a longer route than expected, as it was the precursor to many machines that today are located in gyms.

The device was first tested in Brixton prison. Dozens of prisoners rose at the same time to a gigantic toothed roller and, moving their legs, the cylinder began to turn and the system was set in motion. Cubitt's invention was called treadmill. And today they continue to give the same name to the treadmills that are in the gyms.

Of course, walking on the device was not optional for prisoners, but was part of the sentence. According to the sources, the time spent on the prisoners' machine was not fixed, although some have reported days of more than ten hours. In those works they went five kilometers (and not on a quiet walk, but they went up the stairs). ).

It was effective that prisoners were spinning around the wheel as if they were hamsters. Without moving from the site, the roller was able to fatigue the condemned and obtain their submission. But they soon realized that, apart from watering the prisoners, it was possible to get another benefit from that mill. They started using water to move or grind the grain, for example.

The use of prisoners as slaves, the work and the exploitation of their activities is something long ago, was not invented by Cubitte. In ancient times, they were forced to row the norias or to row in galeras, in the Middle Ages, for example, to build cathedrals, to pull the pulleys and to be condemned to collect stones...

And now, another kind of slavery drives the “doomed” into those traps. They pay the penalty with money.