Parallel motion linkage
Videos
In kinematics, the parallel motion linkage is a six-bar mechanical linkage invented by the Scottish engineer James Watt in 1784 for the double-acting Watt steam engine. It allows a rod moving practica
Watt's parallel motion on a pumping engine
Watt's linkage
Videos
A Watt's linkage is a type of mechanical linkage invented by James Watt in which the central moving point of the linkage is constrained to travel a nearly straight path. Watt described the linkage in
Parallel motion linkage
…wrote "I am more proud of the parallel motion than of any other invention I have ever made." The sketch he included actually shows what is now known as Watt's linkage which was a linkage described in Watt's 1784 patent but it was immediately superseded by the parallel motion. The parallel motion differed from Watt's…
Figure 9 from James Watt's patent application (top left part) showing the straightline linkage
Watt's linkage train suspension