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Show IMPROVED AND ADEQUATE VENTILATION FOR STABLE Illustration Shows How Air Is Pumped From Building at All Times, Regardless of Direction in Which Wind Is Blowing The usual method of stable ventilation ventila-tion is to place flues with outlets terminating ter-minating in a shaft through the roof and surmounted by a plain cupola or cover with a cap a foot or so above the opening. The idea in the latter case Is that the wind will blow between be-tween the cap and the top of the shaft as ehown at B in the illustration herewith, here-with, says American Agriculturist. This method tends to increase the flow of vitiated air from the stable and thus aid the ventilation, pure air coming in from inlet flues placed at somewhat remote points from the outlets. out-lets. Whether this method is fully satisfactory satis-factory is not certain, for at times when the wind is gusty the vitiated air is forced back into the stable instead in-stead of being drawn out, and often snow and sleet are drawn down the shaft. To overcome the uncertain working of this kind of shaft, as well as other disadvantages of the plain cupola, the style of cupola shown at C with sides opening in the direction ventilation is concerned, the principal point is the retention-of wind force to assist in ventilation when only the animal ani-mal heat in the stable is available to produce ventilation. The assistance of the wind is of great service and should be taken advantage of as much as possible. pos-sible. A method of securing this advantage ad-vantage Is shown in the large picture herewith. As the ventilator shaft terminates ter-minates in a square, rather high cupola cu-pola twice the size of the shaft. Openings Open-ings of reasonable size are made opposite oppo-site each other in the walls of, this cupola cu-pola and in line with the prevailing winds, as shown at a. Doors are made to fit these openings, connected as shown at b and hung from a crossplece below the roof of the cupola. Near the bottom of the cupola are two or three holes about 2 Inches in diameter depending de-pending on the size of the cupola. The ventilator shaft as shown at c extends above these openings but terminates slightly below the larger ventilator openings. In operation, the door closes aa shown at a on the right, and opens oa kdr AH EH jj 1 C "L Features of Stable Construction. of the prevailing winds and covered with doors hinged at the top but swinging freely, has been used with success. When there is no wind the doors hang so that the cupola is partly open on each side, but as shown in the illustration, when the wind blows from the right, the door on that side is closed by the force of the wind. The other side, however, is open and there is always a chance for the stable air to pass out and no chance for rain or snow to blow down the shaft. If desired, de-sired, doors can be placed on all four sides of the cupola. . Though this arrangement is satisfactory satis-factory so far as removing outdoor influences in-fluences from the interior system of the left; at the same time a current of air passes in on the right at e and as shown by the arrows passes out on the left, at the same time drawing a current cur-rent of air through the ventilating shaft at c. The same object would be secured if the wind blew from the opposite op-posite direction. It is important that the cupola be divided into two sections as shown at d so that the wind cannot can-not pass directly across from the hole e to the opposite side. If desired, four compartments may be made as shown at e so that the wind may be admitted on two sides of the cupola so that there would be suction to this draft, no matter from what direction the wind might come. |