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Drawbridge - Wikipedia

en.wikipedia.org/wiki/Drawbridge

A drawbridge or draw-bridge is a type of movable bridge typically associated with the entrance ... In France, working drawbridges survive at a number of châteaux, including the Château du ...

How draw bridge is made - material, history, used, structure, History ...

www.madehow.com/Volume-6/Draw-Bridge.html

The type of movable bridge that most people think of as a draw bridge is similar to ... The modern era of movable bridge construction began in the mid-nineteenth .... Additional locks can secure the leaves in their open position so wind does not  ...

www.ask.com/youtube?q=How Does a Modern Drawbridge Work&v=4bWMpB2yf7w
Mar 9, 2007 ... We've all been stuck in traffic waiting for a drawbridge. Have you ever stopped to wonder what it takes to move a bridge? Learn more in this ...

Castle Drawbridge - Medieval Times | Medieval Life

www.medievalchronicles.com/medieval-castles/medieval-castle-parts/drawbridges-medieval-castles/

The Drawbridge in later medieval times tilted up as it ... Modern drawbridges are called “Bascule ...

Hydraulic Draw Bridge | - Kid Makers

www.kidmakers.org/hydraulic-drawbridge/

Unfortunately, this workshop won't teach you how to do that, but it will get you ... A draw bridge (or the technical term: bascule bridge) is a moveable bridge. ... today is the old ones used gear mechanisms, and modern ones use hydraulics.

What Is A Drawbridge Like Today? - Chest of Books

chestofbooks.com/reference/Wonder-Book-Of-Knowledge/What-Is-A-Drawbridge-Like-Today.html

Modern drawbridges across rivers, canals, the entrances of docks, etc., are generally made to open vertically, and the movable portion is called a bascule, ...

Bridge Types And How They Work | Multnomah County

multco.us/bridges/bridge-types-and-how-they-work

They are now very rare, but were once commonly used to allow river traffic to pass at crossings that were too wide for a drawbridge. The Umpqua River Bridge in ...

How drawbridges worked | All About History

www.historyanswers.co.uk/inventions/how-drawbridges-worked/

Aug 6, 2013 ... [fototag id=”Drawbridge”]. Classical, medieval drawbridges worked via the simple principle of counterweight, with large wood and metal bridges ...

Opening (Swing, Bascule & Lift) | Types | Bridge Building | Bridges of ...

www.bridgesofdublin.ie/bridge-building/types/opening-swing-bascule-lift

In some of the modern day bridges the centre shaft lifts the bridge clear of the pier ... Scherzer bridges did not require cofferdams and did not deteriorate from ...

Meet the family who operate the bridges of St. Petersburg - CNN.com

edition.cnn.com/2013/11/08/business/bridging-the-generations-drawbridges/

Nov 8, 2013 ... A multiple exposure photograph of a drawbridge in St. Petersburg. ... St. Petersburg, Russia (CNN) -- Every working night for the past 34 years, Sergey Matveev has watched ... "One can do it all by just touching the screen" Matveev said. ... St. Petersburg itself has morphed into a modern, cosmopolitan city.

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Types of Drawbridges | eHow

www.ehow.com

A drawbridge is a form of bridge that can be moved, lifted or otherwise taken out of the way so no one can ... Modern drawbridges usually serve two functions.

Castle Drawbridge - Castles Index

www.ancientfortresses.org

Learn about the purpose, design and origin of the Castle Drawbridge. ... a castle Castle Drawbridge; What was the purpose of the Castle Drawbridge and how did it help defenses? ... The Castle Drawbridge - A Modern Bascule Bridge ... The drawbridge works by counterbalance so that when one end is lowered the other is ...

KINGS OF SWING / Delta's utilitarian drawbridges slow down ...

www.sfgate.com

Jul 4, 2004 ... Bridge operator Mel Uman was working on the Paintersville on Oct. 17, 1989, ... " That's a boring modern bridge," Newell said of the span he designed. ... the Alameda company that did the work, had to prove it could do the job ...