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London sinks were originally shallower than Belfast sinks. [5] One plumbing guide in 1921 suggested that the Belfast sink was 38 centimetres (15 in) deep.) [ 7 ] Some believe this was because London had less access to fresh water (and thus a greater need to conserve water), but this theory is now contested.
At first, the heavier solids were channeled into ditches on the side of the farm and were covered over when full, but soon flat-bottomed tanks were employed as reservoirs for the sewage; the earliest patent was taken out by William Higgs in 1846 for "tanks or reservoirs in which the contents of sewers and drains from cities, towns and villages ...
The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008.
The timeline of historic inventions is a chronological list of particularly significant technological inventions and their inventors, where known. [ a ] The dates in this article make frequent use of the units mya and kya , which refer to millions and thousands of years ago, respectively.
The larger ones, which possessed receptacles for soap dishes, were the predecessors of the modern bathroom wash basin, or sink. Both varieties, often of very elegant form, were in extensive use throughout a large part of the 18th century and early-19th century, eventually disappearing with the advent of modern indoor plumbing.
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War
Plug for a sink. A plug in sanitation is an object that is used to close a drainage outlet firmly.. The insertion of a plug into a drainage outlet allows the container to be filled with water or other fluids.
Anna Connelly was an American woman who lived from the mid-19th century to the mid-20th century in Pennsylvania.She was the inventor of the predecessor of the modern outdoor fire escape; her invention saved lives, causing it to become a safety component in modern buildings.