. Canadian machinery and metalworking (January-June 1913). o < wPS O feo 25 t 44 CANADIAN MACHINEKY Volume IX question, and which can be clearly seenin Fig. 4. The amount of water passing throughthe flume is calculated from the velocity,which is ascertained by observing themovements of a vertical close-fittingdiaphragm which hangs from a raftfloating in the flume, and is free to movewith the current. The walls of the flumeare built of concrete, and in them flushoak blocks are set, carrying electricalcontacts. There are three pairs of con-tacts—the first close to the power-house,the second 4
. Canadian machinery and metalworking (January-June 1913). o < wPS O feo 25 t 44 CANADIAN MACHINEKY Volume IX question, and which can be clearly seenin Fig. 4. The amount of water passing throughthe flume is calculated from the velocity,which is ascertained by observing themovements of a vertical close-fittingdiaphragm which hangs from a raftfloating in the flume, and is free to movewith the current. The walls of the flumeare built of concrete, and in them flushoak blocks are set, carrying electricalcontacts. There are three pairs of con-tacts—the first close to the power-house,the second 4 ft. 6 in. away from these,the third 25 ft. 9 in. away from the sec- with the contacts, so that a measure ofits outward velocity, and so of the velo-city of the water, is secured. The dia-phragm is provided with a pointer pro-jecting above the raft, this pointer in-dicating when it is vertical, so that if itis still in an inclined position when itpasses the first pair of contacts, thereading from them is ignored and thetime-interval between the second
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
