664 



Popular Science Monthly 



on each floor. They are so fitted that they 

 are airtight and prevent the escape of 

 odors and infections while the chute is in 



The glass-lined, stfiel laundry chute 

 for use in hospitals and hotels. At 

 right is shown the ventilator at the 

 top, the plateglass-covered openings 

 on each floor, and the cellar exit 



Sending the Wash to the Laundry 

 Through a Glass-Lined Chute 



ANEW type of laundry chute has been 

 designed for the use of hospitals, 

 hotels and other institutions where large 

 quantities of soiled linen are handled. It is 

 constructed of steel with a f used-in lining of 

 glass enamel. This lining is particularly de- 

 sirable because it is rust proof and will 

 not absorb substances or odors. 



The chute is supplied with a flushing ring 

 at the top so it may be thoroughly and 

 easily cleansed by a 



A Machine that Moistens 

 the Indoor Air 



O 



shower of hot water. 

 An outlet through 

 the roof permits ven- 

 tilation. The chute 

 may be aired by- 

 opening the bottom 

 door which allows a 

 strong draft to blow 

 through it and out 

 through the ventila- 

 tor. 



Plate glass and 

 nickel doors open out 



Perforated cover-, 



|NE of the greatest objec- 

 tions to artificial heat is 

 the fact that it tends to make 

 the atmosphere very dry. A 

 certain amount of moisture is 

 necessary to maintain health- 

 ful living conditions. When 

 the atmosphere is sufficiently 

 moist a temperature of 65 de- 

 grees is more comfortable than 

 one of 70 degrees, and at 

 night, when the heat is off, the 

 house will not become as cold 

 as it will when the air is dry. 

 A device has been perfected 

 which will keep the house air 

 moist. This is a receptacle 

 which holds and evaporates 

 water in such a manner that 

 the moisture will be diffused 

 into the air without 

 condensing. 



The apparatus measures 

 about 20 inches in length and 

 in height. It will evaporate 

 three and one-half gallons of water during 

 a day and an evening. This quantity of 

 water maintains a humidity of 45 per cent 

 in an ordinary residence. 



The device may be connected with the 

 water pipes and heating pipes of a house. 

 The water supply is automatically regu- 

 lated and the water is heated by the heating 

 system. The apparatus may be used with 

 steam heat, hot water or hot air. 



The heating and water supply pipes are 

 provided with valves so the moisture 

 may be turned off 



nine inches 



-Automatic ball float 



-Water feed pipe 

 SJ5^v^^-0ver flow 



Steam ctucis 



A machine that keeps the air in the house as 

 moist in winter as the outdoor air in summer 



at will. If the air 

 is sufficiently humid 

 so that it is not nec- 

 essary to supply it 

 with moisture, the 

 machine maybe used 

 as a small radiator. 

 This is accomplished 

 by turning off the 

 water supply valve. 

 It will then give off 

 heat without releas- 

 ing moisture. 



