Pintle Pintle A pintle is a pin or bolt, usually inserted into a gudgeon, which is used as part of a pivot or hinge. Other applications include pintle and lunette ring for towing, and pintle pins securing casters in furniture. Pintle/gudgeon sets have many applications, for example: in sailing to hold the rudder onto the boat; in transportation a pincer-type device clamps through a lunette ring on the tongue of a trailer; in controllable solid rocket motors a plug moves into and out of the motor throat to control thrust. In electrical cubicle manufacture, a pintle hinge is a hinge with
The Geographical Pivot of History Britain that its traditional reliance on sea power would become a weakness as improved land transport opened up the Heartland for invasion and / or industrialisation (Sempa, 2000). Mackinder identified the geopolitical nightmare that was to haunt the world's two sea powers during the first half of the twentieth century—Great Britain and, later the United States. Signs of Mackinder's Heartland Theory can be found in the works of geopolitician Dimitri Kitsikis, particularly in his "Intermediate Region" model. There is a significant geographical overlap between the Heartland or "Pivot Area" and the Intermediate Region, with the exception of Germany-Prussia and north-eastern