Harrington's design is just a special case beyond the times. At that time, toilets were still impractical for most people, because there was no main sewage pipe, no running water and not much money to pay for the installation of pipes. There is only one way for them to discharge pollutants, that is, let the dung digger collect the dung, transport it away by car and pour it into the septic tank. When the septic tank is full, they have to dig a new one, and everything remains the same.
Early Toilets The first widely used toilet was not invented by London watchmaker Cummings until 1775. There is a water tank above this toilet. When you pull the handle and open the valve, water will flow down, and at the same time, open the slide valve to flush the feces in the metal toilet into the cesspit.
/kloc-In the late 8th century, the British inventor Joseph Bram improved the design of the toilet on the basis of Cummings' invention. He used some components, such as a three-ball valve to control the water flow in the water tank, which can seal the water outlet; In addition, there are U-shaped pipes, which can ensure that the smell of sewage pipes will not be smelled by users. Brame's improved toilet was patented at 1778.
1870, British ceramic craftsman Taford designed the integral ceramic toilet. It costs less than a metal toilet. It has a snake-shaped drainage pipe, that is, an S-shaped pipe, or a water storage port of a sewer. It always keeps some water, which is equivalent to a gasket to block up the odor accumulated in the pipeline.
1889, British plumber Bostel invented the flush toilet. It has a simple structure and uses a water storage tank and a float valve. There are fewer valves and levers used than before, and the required water pressure is much lower. As soon as the chain is pulled, the water rushes down from the cast iron tank above, and the toilet is cleaned. When the water level in the water tank drops, the float valve automatically opens and the water in the roof water tank refills the water tank. At this point, the structure of the toilet has been basically stable, and the cast iron part of the toilet has been replaced with rustless plastic as much as possible.
It was not until the late19th century that most people used toilets after the sewage system of tap water pipes was installed in European cities and towns.
Although many people still use old toilets, with the emergence of new houses and the expansion of urbanization, more and more people will use flush toilets. The toilet, once regarded as a place to shelter evil people and shelter evil people, also eliminates people's tension and discomfort because of its convenient and clean flushing.