Press: RareBooksClub.com (March 6, 2012)
Author Name:Sutcliffe, George Lister
This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book (without typos) from the publisher.
1901 Excerpt: ...the disc itself contains a valve through which the water is drawn after the siphonic action has been started, but this valve introduces another possibility of defect.
In some recent cisterns, such as the "Aqua Jet," the movement of the handle or the pressure of a button actuates a small disc or plunger, which forces water over the bend of a small pipe into an air-pipe connected at the top to the main siphon bend, and at the foot to the flush-pipe, a diptrap being interposed between the siphon and flush-pipe.
The passage of the water down the air-pipe draws air from the siphon bend, and thus gradually starts the siphonic action.
The mechanism is operated with the greatest ease, and is silent in action.
Siphonage is sometimes started by means of a large "displacer" attached to the flushing lever and dipping into the water.
The displacer is so designed that, when the lever is depressed, the bulkier portion of the displacer enters the water and raises the level sufficiently to cause the water to overflow the stand-pipe of the annular siphon.
In these cisterns, the top of the stand-pipe must obviously be below the top of the cistern, and secret waste may possibly occur.
Tipper Cisterns.--Cisterns of this type are not often used for water-closets, as they give rise to a considerable amount of splashing, and are also somewhat noisy.
The essential part of the apparatus is a tipper or tumbler swung on pivots and attached to the flushing lever in such a manner that, when the handle is pulled, the tipper is partially turned and the contents are discharged into the chamber in which the tipper is swung, and pass thence down the flush-pipe.
Pneumatic Cisterns.--These are only adapted for high-pressure supplies.
The cistern is a closed galvanised...
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