First Inversion:
In this, link 1 is fixed, link 2 acts as crank, and link 4 works as a slider and link 3 connects link 2 with 4. It is known as connecting rod. Among links 1 & 4 sliding pair has been provided.
This mechanism is also called as slider crank chain or reciprocating engine mechanism because it is utilized in internal combustion engines. This is also utilized in reciprocating pumps as it change rotatory motion into reciprocating motion and vice-versa.