Kinematic Chains: Inversions --- Part 3

The Third Inversion more examples:

One of the most interesting application of Third-Inversion is the Rotary-Engine of an Air-Craft, shown in the Fig. posted below;

In case of the Rotary-Engines, the crank, item -2 in the fig, is fixed to the frame ----- and the propeller was attached to the rotating  crank-case. Now a days the use of rotary-engines has drastically reduced owing to the advent of Jet-Engines ---- which are faster, have better fuel economy and are more reliable. You may be aware this type of engines were extensively used in World-War- I.

Fourth-Inversion: 

In the Fourth-Inversion the slider is fixed, as shown is the diagram posted below;

The very commonly used application of fourth inversion is a Hand-Operated Pump, shown below;