Who invented the U-tube of the toilet?

/kloc-at the end of 0/8 century, British inventor Joseph? On the basis of Cummings' invention, Bram improved the design of the toilet. He used some components, such as a three-ball valve to control the water flow in the water tank and 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.