My Time Machine

After concluding that a cube exists not only in space but in time, I decided to build a device that would allow me to move around in this fourth dimension. If people are able to move around in the other three dimensions than why not the fourth? This is the Time Machine that I have constructed to allow me to move through the fourth dimension, time. The one lever sends the machine into the future and the other one sends it into the past. The levers are also removable so that no one or nothing can operate my machine, while I leave it unguarded, when exploring the future lands.