All about Battersea. Henry S. Simmonds
purification; two of these driven by engines of 20 horse power work 150,000 cubic feet per hour each. Two driven by engines of 12 horse power work 100,000 per hour each. Attached to the inlet of each exhauster is one of Wright's exhauster governors, it is made on the principle of pressure or suction elevating or depressing a light cylinder working in a water-lute of sufficient depth. When an exhaust is maintained on the water gauge, counter balance weights equal to the exhaust on the area of the cylinder are applied, and the oscillations, as the suction increases or diminishes, regulate to a nicety the exhaust. The whole of the machinery in this department is in excellent order and will bear the minutest inspection. Over the engine house, which is reached outside by a corkscrew or spiral iron staircase, is a workshop fitted up with machinery; it contains a horizontal engine of eight horse power, which drives two lathes, one bolt screwing machine, two drilling machines, and a saw bench. Against the wall of the engine house is one of Tangye's Special Pumps for raising water from the dock to supply the whole of the works with water for cooling purposes. Outside the engine house an apparatus called a jet exhauster has recently been erected composed of a series of vertical iron tubes, a steam boiler, a generator, and jet. A vacuum is created by a blast of steam, thereby compelling the gas to rapidly leave the retorts and at the same time the ammonia is supposed to be entirely removed by means of water which percolates through shavings with which the tubes or pipes are filled.
On the south side of the works, in addition to the coolers, there are thirteen purifiers and fifteen plots or courts including the foreman's lobby. Each purifier is of cast-iron, it is oblong in form, the cover is wrought iron riveted together in sheets, and the seal is made by means of a water-lute round the edge of the purifier. The purifying material, which is sometimes lime but principally oxide of iron, is carefully spread out on trays and these are disposed in tiers or sets in such a manner as to leave a clear open space between each succeeding layer to allow the gas to diffuse itself thoroughly throughout the mass. Lime when once fouled cannot profitably be renewed for gas purifying purposes, but the oxide of iron can be further utilized by spreading out the oxide in an open court when the oxygen of the atmosphere precipitates the sulphur and the oxide is again fit for use.
The gas passes from the purifiers to the station meter house fronting the stores on the north side of the yard, where the quantity of gas made is registered; adjoining which is Mr. Methven's the Sub-Manager's office, and a test room or laboratory where various experiments connected with the manufacture of gas are conducted. Against the north boundary is a small gas house with gas-holder, etc., all complete, occasionally used for experimenting purposes. From the station meters the gas passes to the gas-holders; each of these enormous circular vessels possesses great storage capacity. It is made on the principle that the circle of all geometrical figures is the one that a fixed circumference or outline is capable of enclosing the greatest amount of space. A gas-holder is made by riveting together light wrought iron sheets upon an angle framing and in shape resembles an inverted cup, the crown being either flat or the segment of a large sphere. It works in a circular water-tank, round which columns are erected that sustain guides at proper intervals by which the gasholder when working is supported, etc. Erected in different parts of the works, including those (two) in the field Prince of Wales' Road, are five immense gasholders with double lifts capable of holding in all 7,000,000 cubic feet of gas. The most imposing view of the Works is from the gate near the entrance of the Creek at Mill-Pond Bridge; in the creek there are sometimes as many as forty barges. On entering at this gate the eye is attracted by two ponderous lifts, which, by an arrangement of rope bands attached to shafting with revolving iron drums and pulleys supported by columns and girders and driven by two horizontal engines of twelve horse-power, are capable of lifting 500 tons of coals every twelve hours. The coals are raised from the barges in iron waggons which hold 1 ton 15 cwt. each, there are two waggons to each lift so that while one waggon is being filled the other on the stage above is being conveyed on iron rails to whatever part of the retort house the coals may be required. Each engine has a powerful brake and is worked with two levers. On the west side of the creek is the manager's residence, and an enormous gasholder with capacity to hold 2,000,000 cubic feet of gas; further on is a hand crane. In front of No. 7 retort house is one of Winshurst and Hollick's engine cranes, which is capable of lifting 200 tons of coals in ten hours by means of a chain and bucket lifted up to the hopper, a distance of nearly sixty feet, and emptied. The bucket holds 15 cwt. of coal. That portion of the Company's premises known as Mill-Pond Yard is used for the storage of pipes, bricks, fire-clay, etc. Here is the carcass of the Old Tidal Mill with lock gates; here too is the Workman's Institute and Band room. Mothers' Meetings are held at the Institute on Wednesdays at 3 p.m., on Sunday afternoons at 3 o'clock for Bible readings by a Missionary in the district.[1]
[1] Since the above description was written in 1877 very extensive alterations have been made in these works. The Company have completed a large purifying house at the south side of the Creek, and have had constructed on the site of the Old Institute a dock for the purpose of admitting steam colliers of 1000 tons burden; and have erected a coal tramway from the same into the Works, crossing Nine Elms Lane with an iron bridge 22 feet from the roadway, which has been widened at least 20 feet. Moreover the carcass of the Old Flour Water-Mill has been pulled down the only vestiges remaining are the lock gates. Opposite Mr. Methven's residence a new institute and stables have been built. In the Works the old offices, workshops, stores, meter-house, and test rooms have been demolished, the high shaft pulled down and the jet exhauster removed. A new meter-house has been erected opposite the engine house and there has also been added new machinery. The Creek has been narrowed and the portion of ground recovered has considerably increased the size of the coke yard. A parapet has been built on both sides of the Creek to prevent the water from overflowing in the event of extraordinary high tides. Also a new stage retort house is being erected parallel with retort house No. 6. (Messrs. Kirk and Randall, Contractors). In addition, three blocks of new buildings have been erected on the west side of the road within the principal gate, is B (1) containing coke office, cashier's office and strong room; timekeeper's office, weigh office, coke foreman's office, superintendent's office and test room. On the east side of the road is B (2) containing gate-keeper's lobby and stores. At the south-east corner of the Works is B (3) consisting of workshops, lobby, etc. The whole of the three blocks were completed in about four months. (B. E. Nightingale, Builder and Contractor). The factory bell has been mounted against one of the columns belonging to the gasholder near the timekeeper's office, and a gasholder of colossal dimensions is being erected in the Company's field, Prince of Wales Road. The alterations, improvements, etc., at these Works within the last ten years have involved an outlay of about £200,000. Yard Foreman, Mr. A. Wilson; Carbonizing Foremen, Messrs. H. Walker, M. Walker, R. Johnston, W. Taylor, T. Reynolds, G. Feeney; Purifying Foremen, Messrs. D. Brown and H. Aylett; Foreman of Enginemen, Mr. G. Wilson; Coke Foremen, Messrs. G. Smith and C. Meredith; Coal Gang Foreman, Mr. W. Clowes; Timekeeper, Mr. R. Whitmore. Mr. R. Harvey was foreman over the men in the carbonizing department and had been upwards of forty years in the Company's employment, in consideration of his valuable services the Company have granted him, as they have also several other of their old and faithful servants, an annuity.
Upon the mains at their exit from the works valves are placed, each valve having a revolving pressure indicator attached, the paper of which is graduated into inches, and tenths, and marked with spaces corresponding to the twenty-four hours of the day. In the meter-house self-regulating governors are used for this purpose. From the gasholders the gas is driven through cast-iron mains or pipes, and from them by wrought iron service pipes to the lamps and burners which help to illuminate our Metropolis. The Company's mains extend about 170 miles, and at any point they supply gas with the same abundance and precision as at Nine Elms. At one time, the Works of the London Gas-Light Company at Vauxhall were considered the most powerful and complete in the world, and even now, in this age of rivalry and sharp competition, under the judicious management of their Board of Directors and their skilled Engineer, Robert Morton, Esq., the London Gas-Light Company maintain an honourable position among other gas-light companies, and are worthy the name they bear. The number of men employed at these works in the Winter season is about 500. There is a Sick Provident Club belonging to the works.