. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. 4. Fig. 5. Fisr. A, iron pipe. B, limber frame. C, canvass. D, joint. E. iron hinge. F, iron straps. G, bearers. THE FLEXIBLE WATER MAIN, Contrived by the late Mr. Watt, for the Glasgow Water-work Com- pany. By John Robison, Esq, (From the Edinburgh Philosophical Journal, I'ol. III.) The Glasgow Water-work Company derive their supply of water from a well and tunnel formed in a stratum of sand on the left bank of the Clyde, which affords a natural filter for


. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. 4. Fig. 5. Fisr. A, iron pipe. B, limber frame. C, canvass. D, joint. E. iron hinge. F, iron straps. G, bearers. THE FLEXIBLE WATER MAIN, Contrived by the late Mr. Watt, for the Glasgow Water-work Com- pany. By John Robison, Esq, (From the Edinburgh Philosophical Journal, I'ol. III.) The Glasgow Water-work Company derive their supply of water from a well and tunnel formed in a stratum of sand on the left bank of the Clyde, which affords a natural filter for the water of the river. As the city lies on the right bank, the conveyance of the filtered water across the stream was a problem of some difficulty. The fertile genius of Jir. Watt, however, enabled him to solve it. He suggested that a flexible iron main should be drawn across the bed of the river, through which pumping engines on the north side should raise the water from the well on the south side. In executing this plan, the well and tunnel were dug in the sand near the water's edge. Tlie well is 10 feet in diameter, and its bottom is 12 feet under the ordinary surface of the river; the feeding tunnel is 3 feet wide, iuid G feet high, and extends for a considerable distance into tlie sand- bank; the well has a wooden platform bottom: its sides, and those of the tunnel are built of granite, put together without mortar, and backed with gravel, to prevent the influx of sand. The south end of the suction pipe (or main) is turned down into the well to a sufficient depth. That part of it which lies in the bed of the river, is formed of pieces 9 feet long, (exclusive of joints,) and 15 inches interior di- ameter. Fart of the joints are formed in the usual way, but others are something like what is called "ball and socket," or "universal ; The whole is laid on strong frames made of parallel logs; these frames are joined by strong iron hinges, having their


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