Show 1 h 1 1 ventilation HOUSE VE SEVERAL METHODS OF SECURING 11 11 I 1 PLENTY OF FRESH AIR C I 1 sarantos sarae tos on a subject which 0 Is I 1 of vital importance if in every home 1 too many 9 any house flo ex are am death araps I 1 I 1 cadose of air I 1 I 1 dr howard van renselaer of albany written aa an essat essay on impure air and has I 1 ventilation of tr te dwellings thai that WM was awarded a prize by the X ew york I 1 1 state sto medical I edical assoni association atlon here are I 1 1 extracts from ur dr VAU article I 1 4 were vere people killed outright by tout foul al air r it dangers would be carefully guarded against but its effects are alow slow and insixi ws and often ascribed to other causes cades cad es 1 we arc aro care careless less of lit its re results because As I 1 its ta effect at any anyone one time 1 is slight we grow accustomed to it and disregard its it risks ris ks and after alter being in UK its presence a few aln in become dulled lulled and do utes our benses be not warn ns us of the tile danger I 1 I 1 but while the immediate effects seem I 1 trifling yet ft it Is li true that any prolonged I 1 vitiation of 0 f this source of supply interferes Inter feret t with the proper working of our organizations 11 and depre depresses bitses our vital functions function 1 I statisticians ha have e shown that of the causes of mortality inoria lity the most important and und tap far theat reec reaching hing is impure air we ne keep our ivin windows dows closed a great part k of the year during the winter to keep ou the cold and in the heated term in sum mer iner to exclude the heat beat so that the circulation and renewal of air in our houses are at these times slight the incoming air introduced for ventilation may be vitiated I 1 or not according to our surroundings but once in it may become contaminated in several ways and unless we take special I 1 pains wins to remove remo e this foul air it rapidly ao C j cumulates becomes offensive and is a menice menace to health the primary condition for ventilation la is 0 that the incoming air shall be pure it must be pure external atmosphere air that is drawn from small closed courts or from between bick back to back buildings or that has blown over refuse or that rises from a cellar is unfit for continuous breathing the sun rarely or never visits these those spots and the wind gets no chance to sweep through them especially bad Is the cellar air as cellars are apt to be damp il moldy and dark and are frequently polluted by decaying vegetables and the ash heap and currents of air are constantly passing through them from the soil roll below go that sew sewer er air from defective drainage in the neighborhood may easily enter and be rocked sucked through the bouse house this danger is i particularly great if the house Is 14 heated by a furnace whose wooden air box passes through the cellar la in providing inlets a number of things tare bare to be taken into consideration coD the inlets must be so placed that the air nir can not blow directly on the occupants of the room and they must be of such aze that I 1 sufficient incoming air is obtained without a high velocity for if the movement is greater ff reater than two or three feet per second drafts are experienced and besides be side s a slow current is more favorable for ant uniform form ciffa diffusion don than a rapid one it if it can mn be avoided air should sho u id not enter through openings at the th e level of the floor 0 as rut dust readily falls into the openings and fouls the air and if the incoming air is cooler than the temperature of the room it chills the feet the place of admittance of cool coot air should be above the beads heads of the occupants and means should be taken to diminish the current if it too rapid and the flow should be directed upward as there meeting met ting the warmer air of the ceiling it mingles with it becomes warmer and gradually spreads through the room the external openings of the inlets should give on a place where the nir air is uncontaminated they should be short and find so a arranged that they admit of ready clea cleansing ing they should le be numerous and small rather than large and single as they are thus less liable to cause drafts draft when the conditions are such that the window cannot be freely opened it cana can be arranged in one of ti everal waya to provide sufficient fresh air birds meth od consist 4 of placing a movable block of wood under the entire length of the lower window sash thus raising the top of the lower nash sash above the bottom of the tipper by this procedure considerable erable apace space between the two window frames in is left through which the incoming air freely passes and being impelled in an upward direction it causes no draft in tube the air from outside enters through a hole in the wall and is conducted by an upright tu tube be into the room the opening of the tube Is ls above abo e the heads of the occupants and the air air escaping ascends toward the ceiling coopers ventilator consists of a series of apertures aper tures in a w window pans pane arranged in A circle which can be partially or entirely closed by it glass disk mo movable able on it pivot with corresponding apertures aper tures in private louses houses during parties partle i the rooms often become insufferably hot nod and close these unpleasant feAt features tures can to ko a great extent be avoided by having it tem temporary horary sherin ham valve valves constructed of wood und and can vaa vas and inserted above the upper nash sash of the window which i is ii i lowered tor for the pur pose 11 the sheringham hank valve consists of an all opening through the wall for the air to pass I 1 the entrance being usually guarded by ey a strainer of rome some sort to keep out dust on the inside ih is a iron plate with closed sides and hinged at fit the bottom an attachment in Is arranged to more or less completely change it the entrance should be a little oinitA ller than the exit that the velocity of the current into the room may be diminished it is usually placed near the ceiling ventilating fireplaces are marked im fm on the ordinary fireplaces they have all the adv of the latter and in addition they prevent drafts of cold air by sending into the tile room air that is partially warmed fresh air Is admitted admit to the back of the gnit grate into a chamber which is warmed by a large heating beating sur ur face and being curried carried up by a flue discharges into the upper part of the room there are a number of different kin kinds da of good ventilating lating fireplaces and ventilating stoves made the merits claimed for these improved fireplaces are that they i Ye allate the room that they maintain an equable temperature in nil all parts of the room and prevent drafts that the heat from radiation radt atlon Is thrown into the room better than from other grates that tho the fire brick lining prevents the 11 re from going out even when left un touched for a long time and prevents prevent i the rapid changes of temperature w which occur 10 in rooms in cold weather from that cause that they economize fuel partly by mak ing use of the spare beat which would pass up linney and partly by insuring by their construction a more complete combustion and thereby dimin jiing ish ing smoke that prevent smoky clile chimneys by the ample su supply of w arm ed air 1 r to the oom yoom and by pit I 1 cre created ted in a the neck of the chimney |