THE IRRIGATION AGE. 



223 



WATER MEASURING DEVICES 



(Continued from page 214) 



that the water in the main channel will be at least 3 to 

 4 inches below it. The water in the ditch above can 

 then be checked up with the flashboards until the 

 water in the side box comes level with its crest. The 

 ditch into which the measured water is turned must 

 be lower than the main channel by over one foot. The 

 water in the outlet flume should not rise within about 

 3 inches of the bottom of the slide opening. If the 

 water in the outlet flume does rise above the bottom of 

 the slide opening, the conditions for measurement are 

 changed and the discharge is smaller than with free 

 fall. 



In the tests of this device the amount of water 

 supposed to have been passed, as measured by taking 

 the area of the slide openings, averaged 4 per cent 

 greater than was actually run. The error did not vary 

 with the amount of the discharge. From these tests it 

 appears that the slide can be set within an average 4 

 per cent of correct if care is used. 



This box will measure water up to 150 inches 

 satisfactorily under conditions to which it is adapted, 

 although it is not in general an economical box to use. 

 It requires as much fall from the supply lateral as a 

 weir, besides some fall in the lateral itself. It also 

 takes as much lumber as is required for a check and 

 turnout in the supply later and a weir below. The 

 weir will give more satisfactory measurements and has 

 no slides to leak if too loose or to stick if too tight. 

 The inch box was used a good deal in the earlier days 



when water was measured mainly for mining but is 

 built but little now for irrigation use. It has one ad- 

 vantage over a weir in that the amount being measured 

 can be determined directly from the area of the slide 

 opening, no tables or figuring being needed. With a 

 weir, tables must be used giving the discharge for weirs 

 of different lengths at different depths. 



The next article in this series will be devoted to a dis- 

 cussion of U'cirs. 



| Mr. J. W. 

 \ Lough, Scott, 

 | Kan., writes: 



I "MyOOH.P. 



| CharterType 



I "R"OilEng- 



| ine burns 



| about 100 



| gallons of oil 



| every!5hrs., 



| costing 2J^c 



| per gallon 



! laid down in Thu flow of water is p umpe<J by Mr. Lough's | 



| Scott. 60 H. P. Charter Oil Engine 



Submit your irrigation problem and we will help figure | 

 I it out for you. 



Operates on Distillate, Kerosene and Gasoline, fuels j 

 I that are obtainable at all times. 



1 CHARTER GAS ENGINE CO. 



Box 39 



STERLING, ILL., U. S. A. 



Inc. 1871 



Every Farmer Needs This Galvanized Flume 



With water-tight joints. Every Farmer who sees this Flume in operation 

 will want it. We ship 10 foot lengths; you spend scarcely 10 seconds 

 making water-tight, "ROLL-LOCK" joint. 



NO SOLDER REQUIRED 



Our rigid "ROLL-LOCK" flume in practice permits handling of 30-foot sections and we 

 GUARANTEE our roll-lock to remain water-tight. For Apple Orchards and Small Truck 

 Farms we recommend a flume 10 in. across top, (18 in. girth) 24 gauge, when pitched 3 in. 

 to the 100 lineal feet will discharge 220 gallons water per minute. 10", 24 gauge flume with cress bars. Price 8Mc 

 per foot crated F. O. B. Chicago. Weight per 100 lineal feet 190 Ibs. Portable steel adjustable supports furnished 

 at extra cost to you. Will quote price on flume up to 36" in 16 gauge and lighter. District Agents Wanted 



ROBERTSON BROTHERS, 1036 W. 37th Street, CHICAGO, ILLS. 



THE TENT-COT 

 OPEN AND FOLDED 



Manufactured 

 Exclusively by 



YOU SHOULD USE 

 The Enterprise Tent-Cot 



" The Perfect Outdoor Bed" 

 For Porch, Lawn or Camp 



The Enterprise Tent-Cot will protect you from all the dis- 

 comforts and dangers of sleeping out. You sleep 17 inches 



above the ground under a storm-proof covering that enables you to use the Tent-Cot every night in the year, and all the doors 

 and windows are fitted with both storm and mosquito curtains that can be raised and lowered at will ot the occupant. 

 For anyone afflicted with lung trouble there is nothing equals the Tent-Cot. It also has a splendid appearance and can 

 be set up on your porch, lawn or roof and taken down when not in use. Can be set up in a space 30x78 inches and only 

 requires about 30 seconds to operate. It is ideal for hunters, fishers and campers as it eliminates all the annoyance of "mak- 

 ing camp." With a Tent-Cot you carry your camp with you under your arm and sleep safe and sound any place. 



SPECIFICATION'S Length of cot open. 6 ft, 6 In.: width of cot. one person, 28 in.: width of cot. two persons. 44 In.: height of bed from 

 ground. 17 in,: height of tont over cot. 32 in. : size of cot folded, for 1 person, 28x36: size of cot folded, for 2 persons, 44xS6: weight, 1 

 person. S9 Ibs.; weight. 2 parsons. 44 Ibs.; frame is of hard maple, painted green; covering is of heavy waterproof canvas in colors. 



>TUC&^ Tent*Cot?8 in. wide, open I side. W.OO; Tent-Cot 28 in. wide, open 2 sides, 19.60: Tent-Cot 44 in. wide, open 2 sides. 111.60. 



ENTERPRISE BED COMPANY, HAMMOND, INDIANA 



When writing to advertisers please mention The Irrigation Age. 



