Investigation of the design of apparatus for the measurement of automatic sprinkler distribution . was a mlnlmurr amount of disturbance. It was novi necessary to design some attach-ment v/hereby depths greater than 5-1/2 of watercould be measured. A design for a telescopingbase first worked out and tried. This proveda failure, due to the fact that it slowed up theprocess to a marked extent ^^nd that it made theinstrument very awkward to handle. The followingarrangement, however, was v^orked out, tried, andproved a success. The wooden upright was re-moved from the hub, the hub was tapped a
Investigation of the design of apparatus for the measurement of automatic sprinkler distribution . was a mlnlmurr amount of disturbance. It was novi necessary to design some attach-ment v/hereby depths greater than 5-1/2 of watercould be measured. A design for a telescopingbase first worked out and tried. This proveda failure, due to the fact that it slowed up theprocess to a marked extent ^^nd that it made theinstrument very awkward to handle. The followingarrangement, however, was v^orked out, tried, andproved a success. The wooden upright was re-moved from the hub, the hub was tapped and a pieceof 1/4 pipe (E Fig. 2) 8 long was screwed into inches v;as cut off the bottom of the upright,the end was bored to a depth of 2 to take a pieceof Bessemer steel rod (F ) 1/4 in piece of 1/4 Bessemer steel rod 9 long wastaken and two small holes bored through it 5 apart,the first one being 2-1/2 from one end. A groovel/8x3/32 was then cut in the rod running from holeto hole. The piece of 1/4 pipe mentioned beforewas bored 1/2 from the upper end with a 1/16 hole. Flp. 2 in vi^hich a pin, (G Fig, 2) which extended 3/16into the pipe was held in place by a flat spring.(H Fig. 2). One end of the rod made a tight fitinto the end of the upright, the other end fitsinto the 1/4 By this means, when the pin was in the tophole in the rod, quantities of water up to 5-1/2in the pan could be measured, the readings beingtaken on one side of the arc. To measurequantities between 5-1/2 and 10-1/2, the pinwould be pulled out far enough to permit the rodto move. The pin, following the groove wouldallow the upright member to be raised until the endof the groove was reached when the pin would dropinto position in the other hole, thus fasteningthe upright in this position. The same procedure as described with thefirst design to test for the uniformity of the panswas repeated. This time, however, the calibra-tion of the ten pans was only carried up to 2-1/2gallo
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Keywords: ., bookcentury1900, bookdecade1920, bookidinvestigatio, bookyear1920
