Sessional papers of the Dominion of Canada 1909 . North Bay 3-6 3-0 3 0 Dalles 3-0 2-4 Mattawa 1 -5 *Between flights. tTlirough chamber walls. AUTOMATIC VALVES. The Cluett self-operating, balanced valve for the control of a vertical circularsluiceway when under pressure is the invention of Sanford L. Cluett, , of HoosickFalls, The valve has been in sucessful operation for some years in controlling theoperating sluices of the United States government locks on the improvement of theBig Sandy river, Kentucky, and other places. This valve is a modification, or rather an improvement, of th
Sessional papers of the Dominion of Canada 1909 . North Bay 3-6 3-0 3 0 Dalles 3-0 2-4 Mattawa 1 -5 *Between flights. tTlirough chamber walls. AUTOMATIC VALVES. The Cluett self-operating, balanced valve for the control of a vertical circularsluiceway when under pressure is the invention of Sanford L. Cluett, , of HoosickFalls, The valve has been in sucessful operation for some years in controlling theoperating sluices of the United States government locks on the improvement of theBig Sandy river, Kentucky, and other places. This valve is a modification, or rather an improvement, of the Fontaine valve,in use for many years by the French government for the control of the operatingculverts of locks on different rivers in France, a description of which is unnecessaryhere. The Cluett valve is made self-operating by utilizing the difference of pressuredue to the difference of head between the upper and lower pool, and is illustratedbriefly by figures 1, 2 and 3. GEORGIAN BAY SHIP CANAL SURVEYSESSIONAL PAPER No. 19a 183 Upper poaf. Upper poo/ Cluett Automatic Valve. 184 DEPARTMENT OF PUBLIC WORKS 8-9 EDWARD VII., A. 1909See fig. 1. This shows the valve closed under pressure. The valve consists of four parts: Thecasing or movable part AA, the fixed part GG, the valve VV, and the valve-seat SS. Aswill be seen from this plate the pressure on the casing at the point A a, is greater on theoutside than on the inside, due to difference of head of the two pools. The pressure onthe outside of casing not being allowed to enter the inside of it on account of the valveV closing the ports P P. The pressure on the inside of the casing due to the headof the lower pool being permitted to act through the port II, and the valve V, whichloaves the ports p p open. In this condition the excess of pressure on the outside ofthe casing forces it firmly against the seat S S. It being desired to open the valvein order to permit the water from the upper pool to flow into the lower, the valv
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