NOTES ON PUMPING MACHINERY.

NOTES ON PUMPING MACHINERY.

At the new pumping station on the North Side of Chicago the recently installed pumping machinery has just been subjected to a twenty-four hour test, which revealed that the engines were far greater in efficiency than the contract between city and builders had stipulated. Designed by Engineer Henry A. Allen, the pumps did more work than their builders ever expected, and a large section of the city will enjoy, as the ultimate result, a more bountiful supply of water than appeared possible to give it. The guarantee of these engines was 162,000,000 foot-pounds at 1,000 pounds of superheated steam, while the “duty” attained during the test was more than 186,000,000 pounds, showing that they are better than any others now operated by the city.

During 1906 the work done at Richmond, Va., by the waterwheel and engine respectively was as follows: Pumped b.y turbine, 109,910,000 gals.; pumped by engine (when the water is out of the firelay, or when the turbine has been stopped), 4,670,000 gals.—total 114,580,000. Supt. Bolling keeps urging the installation of additional pumping machinery. He says; “The time has come when it is absolutely necessary and we should add to our pumps. It cannot be postponed any longer. By the first of July next we hope and expect to have everything completed to furnish water from the settling basins. It will all have to be pumped at the new pumpinghouse. Our present water pumps at this station are not capable of furnishing the daily consumption, and will have to be augmented by the steam pump. It costs three times as much to pump by steampower. Should it be decided that the city will not erect an electric light and power plant at the old pumphouse, to be used both for lighting and pumping purposes, it is imperative that we should at once build a waterpower pumping plant at the new pumphouse, and, at an early date, augment this plant by a steam plant of not less than 10,000,000 gals, capacity, to be held in reserve in the event of accident to our waterpower, brought to us by a canal for a distance of nearly seven miles. The banks of this canal ate liable to breakage from very high freshets. The addition of a 12,000,000 plant at the new pumphouse would aggregate 23,500,000 gals, waterpow’er pumps and 5,500,000 gals, steam pumps—our present steam capacity. * * * A recent estimate made and submitted to the committee on water for a 20.000,000-gal. waterpower plant was $178,891.06.”

The report of the convention of New York State Fire Chiefs will be concluded in the next issue of FIRE AND WATER ENGINEERING.

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NOTES ON PUMPING MACHINERY.

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NOTES ON PUMPING MACHINERY.

The bids opened on pumping machinery at Joliet, Ill., recently were: Laidlaw-Dunn-Gordon company, $5,100 for a chain-driven machine, and $4,375 with gear-attachment; the Ingersoll-Rand company bid $4,650 for a gear machine. No award was made.

The board of public service, Hamilton, Ohio, has finally decided to install a 6,000,000-gal. pump for the combined waterworks and electric light plants, the construction of which will soon begin.

The board of public works, South Bend, Ind., opened bids for a 2,500.000-gal. pumping engine as follows: Platt Iron Works, Dayton, Ohio, pump to be placed on foundation within sixty days, $4,150; Deane Steam Pump company, Chicago, on board cars at South Bend, $4,200. 1 he contract was awarded to the Dayton firm.

A Port Huron, Mich., paper states that, at a meeting of the water board, it was decided to secure a new pumping engine during the coming season.

‘The contract for installing a pumping engine for the municipal waterworks at No. 1 pumping station, Pawtucket, R. I., has been awarded to the R. D. Wood company, 400 Chestnut street, Philadelphia, Pa. The contract price is $79,400.

A press dispatch from Alton, Ill., says that a serious condition presented itself the other day, when an accident to the engine at the pumping station occurred, and all business had to be suspended for twelve hours. A good way to avoid a repetition of such an unfortunate affair is to install another engine without delay.

William Scroggins, superintendent of waterworks at Wheeling, W. Va., reports as follows: “1 cannot too urgently impress on you the necessity for some immediate action being taken in regard to installing a new 2o,ooo,om>-gal. highduty pumping engine to give relief at the pumping’ station, as it will take fully two years to build and install a pumping engine of this size. The failure to take sonic action in regard to purchasing additional pumping machinery, which was recommended in my report two years ago, i> to be regretted. With the great and important question constantly confronting us of furnishing the citv a full supply of water with broken and patched-up machinery, it is in my judgment a serious outlook, as there can be little hope of keeping this junk pile running for two years more, without serious break-downs, expensive to repair and a shortage of water, if not total suspension.’

At Davenport, la., the new Snow pumping engine, which has been completed, was tested last week. It has a daily capacity of 8,000,000 gals, and a guaranteed duty of 125 lbs. steam and 100 Ihs water-pressure. The test was in every respect satisfactory.