The conventions of this representation, head tilted, lips slightly parted, large-eyed, curling hair cut in locks grazing the neck, were developed in the 3rd century BCE to depict Alexander the Great.

The barge and canal system contended favorably with the railways in the early industrial revolution prior to around the 1850s – 1960s for example, the Erie Canal in New York State is credited by economic historians with giving the growth boost needed for New York City to eclipse Philadelphia as America's largest port and city but such canal systems with their locks, need for maintenance and dredging, pumps and sanitary issues were eventually outcompeted in the carriage of high-value items by the railways due to the higher speed, falling costs, and route flexibility of Rail transport.

Prior to the development of the pound lock in 984AD in China by Chhaio Wei-Yo and later in Europe in the 15th century, either flash locks consisting of a single gate were used or ramps, sometimes equipped with rollers, were used to change level.

Flash locks were only practical where there was plenty of water available.

On more modern canals, " guard locks " or gates were sometimes placed to allow a section of canal to be quickly closed off, either for maintenance, or to prevent a major loss of water due to a canal breach.

Greek engineers were the first to use canal locks, by which they regulated the water flow in the Ancient Suez Canal as early as the 3rd century BC.

River navigations were improved progressively by the use of single, or flash locks.

To break out of the limitations caused by river valleys, the first summit level canals were developed with the Grand Canal of China in 581 – 617 AD whilst in Europe the first, also using single locks, was the Stecknitz Canal in Germany in 1398.

In time, projects were devised in Virginia, Maryland, Pennsylvania, and elsewhere. The modern Erie Canal has 34 locks, which are painted with the blue and gold colors of the New York State Canal System.

The innovative features of the Gatling gun were its independent firing mechanism for each barrel and the simultaneous action of the locks, barrels, carrier and breech.

:" I call your own kind self to witness [...] the last pages of Heart of Darkness where the interview of the man and the girl locks in — as it were — the whole 30000 words of narrative description into one suggestive view of a whole phase of life and makes of that story something quite on another plane than an anecdote of a man who went mad in the Centre of Africa.

For example, when the computers at MIT were protected either by physical locks or login programs, the hackers there systematically worked around them in order to have access to the machines.

The enlargement projects were completed by the installation of two larger canal locks in Brunsbüttel and Holtenau.

Along the intervening stretch of the river a series of locks and weirs were built.

Of the numerous locks that were proposed, only thirteen were completed ; Locks 1 to 11 on the stretch downstream of Mildura, Lock 15 at Euston and Lock 26 at Torrumbarry.

The first locks on the river were built in 1825 at Louisville to circumnavigate the falls.

Pankratiasts were highly skilled grapplers and were extremely effective in applying a variety of takedowns, chokes and joint locks.

LSD, Sunroof, rear rock guard were optional, manual windows and locks, standard M030 suspension.

The maximum allowed vessel size is slightly smaller: long, wide, and deep ; many vessels designed for use on the Great Lakes following the opening of the seaway were built to the maximum size permissible by the locks, known informally as Seawaymax or Seaway-Max.

Originally flintlocks, Halls later were made as or converted to percussion locks.

Girls who were about to be married offered locks of their hair to him.

An agreement allowing convicts to pass on type of locks used on prison doors.

Generally, these locks on turnouts are called `` facing point locks ''.

Different antibody idiotypes, each having distinctly formed complementarity determining regions, correspond to the various " locks " that can match " the keys " ( epitopes ) presented on the antigen molecule.

Former emphasis on presumed race, in which John A. Scott could write an article on Achaean blondness, compared to the dark locks of " Mediterranean " Poseidon, on the basis of hints in Homer, has been laid aside.

The flight of 16 consecutive locks at Caen Hill Locks | Caen Hill on the Kennet and Avon Canal, Wiltshire, England

Scotty forces Cheryl into the cellar and locks it, but his girlfriend Shelly is also possessed by a demon, which spies on her from outside her bedroom as she is changing before hurling itself at her.

Montag yells at the women to go home and reflect on their empty lives and burns the poetry book while Mildred locks herself in the bathroom to take her pills.

However, the network of dams and locks on the Columbia River and Snake River make the city of Lewiston the farthest inland seaport on the Pacific coast of the contiguous United States.

He later worked for Joseph Bramah on the production of metal locks, and soon after he began working on his own.

* PickLock – A round post on the back base of the blade locks into a hole in a spring tab in the handle.

Investigators discovered incriminating evidence at his home: ammonium nitrate and blasting caps, the electric drill used to drill out the locks at the quarry, books on bomb-making, a copy of Hunter ( a 1989 novel by William Luther Pierce, the founder and chairman of the white nationalist National Alliance ) and a hand-drawn map of downtown Oklahoma City, on which was marked the Murrah Building and the spot where McVeigh's getaway car was hidden.

Tolls will continue to be calculated based on vessel tonnage, and will not depend on the locks used.

In 1871, locks on the Saint Lawrence allowed transit of vessels long, wide, and deep.

The locks make the river navigable, even for large cargo vessels ( 88 m long ).

The river has been canalized with 34 large locks () to allow CEMT class V () vessels to navigate the total length of the river.

Just upstream of the Gauging Lock was a large canal basin, now known as Brentford Lock, from which the canal continues to follow the course of the River Brent through two more locks.

The tidal section of the Seine Maritime is followed by a canalized section with four large multiple locks until the mouth of the Oise River at Conflans-Sainte-Honorine.

Key control of the locks becomes a problem with large user populations and any user turnover.

Non-trivial transactions typically require a large number of locks, resulting in substantial overhead as well as blocking other transactions.

Vincent Brook notes that “ Alvy dines with WASP-y Hall family and imagines that they must see him as a Hasidic Jew, complete with payess ( ear locks ) and a large black hat ”.

The Great Lakes Waterway has larger locks and deeper drafts than the St. Lawrence Seaway with the result that a number of lake freighters are confined to the lakes, being small enough to operate on the Waterway but too large to pass down the Seaway.

Second generation ( 1840 – 1870 ) improvements made by others included construction of long stretches of canal, serviced by large locks, many of which are still visible along the river.

A new cut between broad cut and the figure of eight locks, which included two large locks, and a new large lock beside the old one at Thorne were opened in 1838, but little more was done, despite the Rochdale Canal pressing for longer locks.

Traditionally the guillotines were manually operated by turning a large wheel some 150 times to raise or lower the gate ; since the locks have to be left empty this operation will always have to be done twice to pass through.

Sir Thomas Cullam, who had inherited a part share of the upper river, invested large amounts of his own money in rebuilding the locks, sluices and staunches in the 1830s and 1840s.

He had already bought a number of mills on the river, but there were few objections from millers at those he did not own, for he built pound locks with two sets of gates, to enable vessels to pass by without the large loss of water associated with flash locks.

All but two have been swamped by large modern extensions, but those at locks 28 and 31 are still in something like their original state, neither of them have either electricity supply or mains water.

One of the large locks

In large scale river navigation improvements, weirs and locks are used together.

Where the tidal range is large, marinas may use locks to maintain the water level for several hours before and after low water.

When picking up his fake identity papers, the master forger attempts to blackmail the Jackal but the Jackal kills him and locks the body in a large trunk inside the forger's house, where he correctly deduces it won't be found for a long time.