The caisson lock is a type of canal lock in which a narrowboat is floated into a sealed watertight box and raised or lowered between two different canal...

The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined...

ceiling Caisson (engineering), a sealed underwater structure Caisson (lock gate), a gate for a dock or lock, constructed as a floating caisson Caisson (pen...

A caisson is a form of lock gate. It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock...

and a royalty of 4 pence per ton of goods passed. The design of the caisson lock at Combe Hay was not a success: on 15 February 1798 the first descent...

deep. The four main types of caisson are box caisson, open caisson, pneumatic caisson and monolithic caisson. A box caisson is a prefabricated concrete...

lift lock functions by gravity alone using the counterweight principle. One caisson always ascends and the other always descends during each locking cycle...

miles (2.6 km). The lock flight was predated in the immediate area by two other methods of canal lifts—first by a series of caisson locks, then by an inclined...

balanced water-filled caissons in Erasmus Darwin's Commonplace Book (pp. 58–59) dated 1777–1778 In 1796 an experimental balance lock was designed by James...

United Kingdom Camden Lock, Commercial Road Lock, Limehouse Basin Lock Locks on the Kennet and Avon Canal Boat lift, Caisson, Caisson lock, Canal inclined plane...

anymore. The old ship caisson was then stored in the dock, and a new ship caisson that fit the deformed lock was made. This new caisson had the serious disadvantage...

portal Canals of the United Kingdom History of the British canal system Caisson lock Hadfield, Charles (1967). The Canals of South West England. Daved and...

the vertical position, the locking mechanisms are activated. These include securing pins that are protruded into the caisson bases, and hydraulic clamps...

line to cross each other. Anderton Boat Lift Falkirk Wheel Combe Hay Caisson Lock Hay Inclined Plane Foxton Inclined Plane Worsley Underground Incline...

pontoon shown in black The underside of a boat during construction Buoy Caisson (lock gate) Navy lighterage pontoons Outrigger Raft Semi-submersible platform...

plane to navigate Brogborough Hill Combe Hay Caisson lock Camden Lock, William Congreve's hydropneumatic lock. The inclined planes of Dukart's Canal Falkirk...

locks. Examples are the Anderton Boat Lift, Falkirk Wheel and Combe Hay Caisson Lock. Inclined planes raise a canal boat up a hill on a track, powered by...

published in 1788. He also inspired Robert Weldon's Somerset Coal Canal caisson lock. In 1792, Darwin was elected as a member to the American Philosophical...

workplace in a caisson or sealed tunnel. The airlock may need to be large enough to accommodate a whole working shift at the same time. Locking in is usually...

sickness (DCS; also called divers' disease, the bends, aerobullosis, and caisson disease) is a medical condition caused by dissolved gases emerging from...

caissons made of southern yellow pine and filled with cement. Inside both caissons were spaces for construction workers. The Manhattan side's caisson...

prospective caisson door bateau-porte (French) and Pumphouse. At the start of March brickwork was resumed. This time it was on the caisson lock, which also...

The Anderton Boat Lift is a two-caisson lift lock near the village of Anderton, Cheshire, in North West England. It provides a 50-foot (15.2 m) vertical...

from the lock's northern caisson. Passengers aboard the Kawartha Voyageur, which was being raised up at the time, evacuated as the damaged lock was lowered...

barge which enters the caisson drives back towards the canal a quantity of water equivalent to the mass of the barge. Thus, the caisson always weighs the same...

the dry dock. The solution for making a waterproof lock gate for a dry dock was the ship caisson or ship-door invented in France in 1683, but this solution...

Gibraltar Harbour's air lock diving-bell plant, or caisson diving bell barge, was a purpose-built barge for the laying, examination and repair of moorings...

Karl Johanslussen ("Lock of Charles John") is a lock and a sluice, along the Söderström river connecting and controlling the flood discharge between Riddarfjärden...

plane Lower control tower and machine hall Caisson leaving lower lock Caisson en route The inclined plane Caisson en route Gallez, Alfred (1998). Ronquieres:...

nitrogen bubbles releasing from the bloodstream (the bends, also known as caisson disease). Such problems can occur at pressures greater than 1.6 standard...