. Electric railway journal . a monolithic concrete dam which was con-structed to supply water power for the hydroelectricplant being built 3000 ft. down-stream. Unusual fea-tures in these plants include the special underfeedstokers and the Allis-Chalmers reaction type turbine which is used to drive auxiliary pumps. This turbineis said to be the first of its type to be built in two plants were designed and are being con-structed by Woodmansee & Davidson, engineers and con-tractors, Chicago, 111. Non-Clogging Manhole Strainer In the ordinary strainers supplied with sewer trapsfor m
. Electric railway journal . a monolithic concrete dam which was con-structed to supply water power for the hydroelectricplant being built 3000 ft. down-stream. Unusual fea-tures in these plants include the special underfeedstokers and the Allis-Chalmers reaction type turbine which is used to drive auxiliary pumps. This turbineis said to be the first of its type to be built in two plants were designed and are being con-structed by Woodmansee & Davidson, engineers and con-tractors, Chicago, 111. Non-Clogging Manhole Strainer In the ordinary strainers supplied with sewer trapsfor manholes the holes are approximately % in. diam-eter, so that they rapidly fill with mud, and within ashort time the holes are filled with surface water. Toovercome this trouble a malleable-iron strainer with awrought-iron eye cast in it has been designed, so thatthe strainer can be easily removed from the street witha hook, and water rapidly exhausted from the sketch showing the details of the strainer is given. PLAN AND SIDE ELEVATION OF NON-CLOGGING MANHOLESTRAINER herewith. Slots % in. wide have been provided in thestrainer instead of round holes, so that the tendency toclog is largely eliminated. In attempting to remove strainers of the old typemany of them were broken by bars, and the bells wouldoften fall on top of the clay sewer pipes and cause ob-struction. Again, often the strainer and bell werethrown away, so that sewer gas was liberated. The saving which it is claimed will be effected by theuse of the new strainers is considerable, as a cleaninggang will not be required to use a pump, and afterheavy rainstorms, should any of the holees be filled withwater, the strainers can easily be removed. By the timethe cleaning gang reaches the last hole on a section, itcan return to the starting place and remove the mudfrom the manholes. These strainers cost approxi-mately 35 cents each. The Liverpool (England) Corporation Tramways havehad between 600 and 700 women ap
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
