This paper represents the study of the two different mechanisms, namely, Box Shifting Mechanism and Gearless Power Transmission Mechanism. Our idea is to combine and integrate these two different mechanisms into one. So, they are very important for our project. In this paper, we have covered various aspects of these mechanisms. The main objective of this study is to learn and understand about these two very interesting mechanisms. Their Designs, Working Principle, Calculations, Applications etc. are also covered in this paper