Ornithopter  Flapping Mechanisms . The purpose of the  flapping mechanism  is to convert the rotary motion of your motor into the reciprocating motion of  flapping  wings. ... Unfortunately, when a second wing is added, this  mechanism  will produce asymmetric  flapping . The two connecting rods leave the crank at different angles

A  beam engine  is a type of steam  engine  where a pivoted overhead  beam  is used to apply the force from a vertical piston to a vertical connecting rod. ...  Beam engines  were first used to pump water out of mines or into canals but could be used to pump water to supplement the flow for a waterwheel powering a mill.

A  V12 engine  is a twelve-cylinder  piston engine  where two banks of six cylinders are arranged in a  V configuration  around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines. The first V12 engine was built in 1904 for use in racing boats. Due to the balanced nature of the engine and the smooth delivery of power, V12 engines were popular in early luxury automobiles, boats, aircraft and tanks. 

Iris mechanism  is the new  mechanism  built in rehabilitation process for upper limb. The unique structure or movement of the  iris mechanism  is the center can gradually open when any layer is rotating. Different size of center can be designed based on the designer desired.

 It is used in automatic tool changer in machining.   Elliptical Trammels  are used for drawing large ellipses.  They can be used to draw smaller ellipses but only draw one half at a time, having to be reversed to draw the complete  ellipse

Scissor lifts  are widely used in industrial  applications , and also form a staple  design  element in competitive robotics. Each arm of the crosses is called a ' scissor  arm' or ' scissor  member'.

Shaping Machine A  quick return mechanism  is used where there is a need to convert rotary  motion  into reciprocating  motion . As the disc rotates the black slide moves forwards and backwards. Many machines have this type of  mechanism  shaping machine is the best example

Double Crank Mechanism  converts reciprocating motion to rotational motion and vice versa. Interesting for this  mechanism  is that it has three moments of standstill. This project aims at carrying structural analysis on the  mechanism  with two different loading configurations