Tuyere

“ The water in the pounding tub is stirred with wooden buckets, with holes in their bottoms, for several days; and, after the sediment contained in the water, has settled to the bottom of the tub, the water is let off, and the sediment, which is the indigo of commerce, is gathered into bags, and hung up to drain. It is afterwards pressed, and laid away to dry in cakes, and then packed in chests for market.
Washing at the tubs is exceedingly unpleasant, both on account of the filth and the stench, arising from the decomposition of the plants. ”

“ Puddling is on the same principle as tin-dish-washing, only on a much larger scale. Great wooden tubs are filled with the dirt and fresh water, and the former is chopped about in all directions with a spade, so as to set the metal free from the adhesive soil and pipe-clay. Sometimes I have seen energetic diggers tuck up their trowsers, off with their boots, step into the tub, and crush it about with their feet in the same manner as tradition affirms that the London bakers knead their bread. ”

“ They are as thick as the chimneys in a city, and when they are all in motion, hundreds of them in all directions, the sight is quite novel to an Easterner. An ordinary good supply of water is had at a depth of less than twenty feet, but let the well be carried down fifty or sixty feet and a source of water is found that is inexhaustible, the size of the bore or the quantity pumped up not having the slightest effect upon the clearness or the supply of the water. ”

“ For only a fish can exist in a hose or pipe completely filled with water, and that is what the tunnel would become if the water rose to the roof—merely a great, underground rocky pipe for the conveying of the liquid from Pocut River.
So you can easily imagine with what anxiety Bud, Nort and Dick watched the rising water. Every now and again one of them would lean over the ledge, swinging the lantern to and fro, so its gleams would be reflected in the hurrying, foaming stream, and indicate how fast it was rising. ”

“ The house-drain is the large pipe which receives the contents of the soil and waste pipes and conveys them outside the house.
A trap is a bend (with or without an enlargement) of the pipe, intended to retain a sufficient amount of the fluids that enter it to occlude the pipe and prevent the backward flow of air. The effective [Pg 36] water-seal is represented by the total depth of water in the trap, minus the inside diameter of the pipe, and should be at least one inch. ”

“ The water is drawn by lowering the earthen or brazen vessel, the drawer standing beside the well, or, to avoid the risk of striking the fragile chatty against its side, standing with one foot on the well-wall, and the other on a plank, laid across it for this purpose. Women may at all times be seen clustered about these wells, chatting, laughing, and gossipping, each with her water-jar and a cord suited to the depth of the well. ”

“ Cleaning is facilitated by the location of a central gutter in the bottom of the basin with the slope of the bottom of the basin towards the gutter from 1:25 to 1:80 or steeper. A pipe, 2 inches or larger in diameter, containing water under pressure with connections for hose placed at frequent intervals is a useful adjunct in flushing the sludge from the sedimentation basins. For equal capacity, deep vertical flow tanks are more expensive and difficult to construct than the shallower rectangular type. ”

“ If a long trough, divided in the middle by a sluice or partition, have one end filled with water, and the other with quick silver, both fluids will remain quiet so long as they are divided, but when the sluice is drawn up, the heavier fluid will rush along the bottom of the trough, while the lighter, from being displaced, will rise, and flowing in an opposite direction, spread itself at the top. ”

“ When first taken from the stone basin into which it flows, the water is perfectly clear and bright, and exhales no particular smell. It does not sparkle in the glass, but a few bubbles slowly separate, and adhere to the sides of the vessel. When it has stood for some hours exposed to the air, it becomes turbid, and otherwise undergoes a very material change. As it does not properly curdle soap, it may be denominated a soft water. ”

“ Should any of our young readers wish to form a fountain, they may, by bringing a pipe from a water-tank, which should be at the upper part of the house, convey the water down to the garden. Then, by leading it through the earth, underneath the path or grass-plot, and turning it to a perpendicular position, the water will spring out, and rise nearly as high as the level of that in the tank. ”

“ When they find an inch of mud in the bottom of a glass, they stir it up, and then take the draught as they would gruel. It is difficult for a stranger to get used to this batter, but once used to it he will prefer it to water. ”

“ When a fissure crosses a water- bearing stratum, or aquifer, water is forced upward by the pressure of the weight of the water contained in the higher parts of the stratum, and may reach the surface as a fissure spring. A boring which taps such an aquifer is known as an artesian well, a name derived from a province in France where wells of this kind have been long in use. ”

“ An Artesian well, so called from the province of Artois, in France, is a shaft sunk or bored through impermeable strata, until a water-bearing stratum is tapped, when the water is forced upwards by the hydrostatic pressure due to the superior level at which the rain-water was received. ”

“ The watering system may be either a wooden gutter extending along the front of each row of stalls or a cast-iron semicircular pan set between each pair of stalls so as to supply a cow on either side. Whether troughs or pans are used there should be an automatic cock and tank, which keeps the water always at the desired level, and check valves which prevent the water once in the trough or basin returning to the pipe and contaminating others. ”

“ A person must now stand upright in the Chimney, with his back to the back of the Chimney, and hold a plumb-line to the middle of the upper part of the breast of the Chimney (d, fig. 5,) or where the canal of the Chimney begins to rise perpendicularly;— taking care to place the line above in such a manner that the plumb may fall on the line c d, draw on the hearth from the middle of the opening of the Chimney in front to the middle of the back, and an assistant must mark the precise place e, on that line where the plumb falls. ”

“ Water for sluicing operations is frequently brought from great distances through canals, ditches, or flumes, the proprietors of which sell the water to miners at so much the miners' inch, a miners' inch being in most localities the quantity flowing in a given time through an aperture one inch square under a head of six inches.—The celebrated hydraulic process, invented in Placer co., Cal., in 1852, consists in washing down the whole surface and underlying mass of auriferous deposits, preparatory to sluicing. ”

“ Tanks for drinking-water are objectionable; if indispensable, they must never be lined with lead, galvanized iron, or zinc. They should be constructed of iron, or wood lined with tinned and planished copper. The overflow should discharge upon the roof, or be trapped and discharge into an open sink, never into any soil or waste pipe or water-closet trap, nor into the drain or sewer.
45. Rain-water leaders must never be used as soil, waste, or vent pipes; nor shall any soil, waste, or vent pipe be used as a leader.
46. When within the house, the leader must be of cast-iron, with leaded joints ”

“ So effectual is the process that the refuse from the draining-tubs will not assay more than a pennyweight or a pennyweight and a half to the ton, while the water which drains off from the charcoal filters is pumped back and goes through the process a second time. ”

“ The tide flows up the river many miles past the waterworks, carrying up with it the filth from the sewers. The supply of water was, to be sure, obtained when the tide was down, but as the banks of the river are clothed with sedges in many parts, and its bottom deep with mud, the water can never be free from sewage. ”

“ Through the lock our steamer took us in tow again, along the most awful sewer, with chemical works, scavengers' heaps, manure-factories, and unnamable abominations on its banks – the lighter in front of us, being deeply laden, churning up the pestilential mud from the bottom. ”

“ Each tub holds about five hundred fathoms of ground-line, with a thirty-eight-inch ganging, or short line with a hook on its end, tied every five feet; so there're between five hundred and six hundred hooks to every tub. One man alone can bait and handle four tubs of trawl. Two of us are going to fish together, so we ought to be able to swing six tubs without any trouble. ”

“ If there is any inclination in the water-bearing strata, or if there is a current of water only in one direction, then one of the wells would prove a failure owing to the proximity of the fault, while the other would furnish an abundant supply of water. ”

“ The fact that water will flow through a hose wound on a reel, if the diameter of the reel is large enough, and the curves or angles are not too abrupt, is a matter of common knowledge, which no one can appropriate to his own use to the exclusion of the public. ”

“ The amount of sediment discharged at any time must not exceed that producing a moderate turbidity. Whenever the discharge becomes so copious as to render the moving column opaque, the sediments assume a mixed character, coarse grains being, apparently, upborne by the multitude of light ones whose hydraulic value lies considerably below the velocity used, while the churner also fails to resolve the molecular aggregates which must be perpetually reforming where contact is so close and frequent. ”

“ Men wearing thick blue Guernsey frocks and sou’-westers come slouching along, burdened with nets or lobster-pots, or other fishing gear; women and girls, short-skirted and some barefooted, go to and from the beck with ‘skeels’ of water on their head, one or two carrying a large washing-tub full, yet talking as they go as if the weight were nothing; and now and then a few sturdy [Pg 110] fellows stride past, yellow from head to foot with a thick ochre-like dust. They come from the ironstone diggings beyond Penny Nab—the southern bluff. ”

“ The well is lined with wrought-iron tubing, screwed together in sections, and, to prevent water from flowing down the outside of the lining into the well, a water-packer is used, which is essentially a circular piece of leather with the edges cut and turned upward, so that the whole forms a cup about the tube, which is pressed tightly against the sides of the well by the weight of the column of water. ”

“ There is a sludge discharging tap F. With a view to the ready dissipation of the heat of generation the generating chamber is made rectangular and is placed in a water-tank as described. Some of the heat of generation is also communicated to the underlying washer and warms the water in it, so that the washing of the gas is effected by warm water. ”

“ Where the sludge-disposal area is 2 feet or more below the level of the surface of the sewage in the tank, and the floor of the latter is provided with a suitable sump in which the sludge may accumulate, the method of withdrawing the sludge by utilising the pressure of the head of liquid in the tank, as described in connection with the Dortmund type of detritus tank, may be adopted with advantage. ”

“ The dryness of the air, which they occasion, should be remedied, either by placing a vessel, filled with water, on the stove, or by hooking a long and narrow pan, filled with water, in front of the grate; otherwise, the lungs or eyes may be injured. A large number of plants in a room, prevents this dryness of the air. Openings for pipes, through floors, partitions, or fireboards, should be surrounded by tin, to prevent their taking fire. Lengthening a pipe, will increase its draught. ”

“ When sinking in gravel or clay, the bottom of the well tube is liable to become filled up by the material penetrating through the holes; and before a supply of water can be obtained, this accumulation must be removed by means of the cleaning pipes. ”

“ We made a hole in this, towards the upper part of its cavity (with a proper angle) to receive a long wooden pipe, which we fixed therein, to descend to the tub in which the worm should be placed. Here again I was at a loss; for we had no lead pipe, nor any sheet-lead, on board. I thought, if I could contrive a strait pipe to go thro’ a large cask of cold water, it might answer the end of a worm. We then cut a pewter dish, and made a pipe two feet long; and at three or four trials (for we did not let a little discourage us) we made it quite tight. ”

“ These machines work upon long screws. When a new ring of tubbing is added, the rods are detached at a lower level, and are hung upon chains, thus leaving an open space for passing it forward. Before each ring is put into the pit it is tested by hydraulic apparatus, Fig. 151. The tubbing is usually proved to one-half more pressure than it is expected to be subjected to. At Maurage, where a length of 550 feet of tubbing has to be put in, the chief particulars respecting it are;—
The joints between the rings of tubbing are made with sheet lead one-eighth of an inch thick, coated with red-lead. ”

“ The natural curve which the sewage would follow in its downward path as it flowed out from the end of the sewer can then be drawn out for the various depths, taking into account the fact that the velocity at the invert and sides of the sewer is less than the average velocity of flow. ”

“ This led him to the knowledge, that wetness may be often produced by water confined farther below the surface of the ground than it was possible for the usual depth of drains to reach, and that an auger would be a useful instrument to apply in such cases. Thus, chance was the parent of this discovery, as she often is of other useful arts; and fortunate it is for society, when such accidents happen to those who have sense and judgment to avail themselves of hints thus fortuitously given. ”