Slider crank chain inversion

This inverted slider-crank is the form of a slider-crank linkage that is often used to actuate a hinged joint in construction equipment like a crane or backhoe, as well as to open and close a swinging gate or door.

[1][2][3] A slider-crank is a four-bar linkage that has a crank that rotates coupled to a slider that moves along a straight line.

When the slider begins to move back into the tube, the connecting rod pulls the wheel round to complete the rotation.

Application- Whitworth quick return mechanism, Rotary engine, etc...

Applications - Slotted crank mechanism, Oscillatory engine etc.., This inversion is obtained when link 4 (slider) is fixed.

Back hoe
The linear actuators of a back hoe form inverted slider-crank linkages.
Back hoe actuator
Close-up of the linear actuator of a back hoe that forms an inverted slider-crank.
Linear actuator
Linear actuator actuates an inverted slider crank.