110 



Most important to the shopkeeper is 

 the use of the electric fan in show win- 

 dows to keep the frost off the glass. Un- 

 less some special arrangement is made 

 to secure excellent ventilation of the 

 show window, it 

 will become so 

 heavily coated 

 with frost on 

 cold days that the 

 exhibits cannot be 

 seen from the 

 street. A fan in 

 the window, how- 

 ever, will keep 

 the air circulated 

 so that the moist- 



Clearing a show window 



ure that tends to gather upon the window 

 will be evaporated. 



The fan is very useful in aiding the 

 heating system in the home, especially 

 where a hot air system is employed. 

 Every one who has ever tended one of 

 these furnaces knows that it is fre- 

 quently impossible to make the hot air 

 rise through certain pipes when the wind 

 is blowing in the wrong direction. A 

 fan placed direct- 

 1 ■■-;-■■ - :^ ly in front of the 

 register will 

 draw the hot air 

 through the pipes 

 and heat the room 

 very quickly. The 

 writer knows of 

 a number of cases 

 where the cold 

 air intake pipe is 

 so arranged that 

 a fan may be placed inside, thus increas- 

 ing the circulation of the furnace. Who 

 has not gone to his furnace to find it 

 cheerless and depressed with hardly a 

 spark visible? In such cases the most 

 drastic arrangement of drafts will fail 

 to save the fire, but if there if any life 

 left in the fire pot whatever, a fan 

 placed in front of the lower door will 

 soon have the coal blazing merrily. 



\\'hen the kitchen is filled with smoke 

 from an unruly range an electric fan 

 placed in the window will quickly clear 

 the atmosphere without drawing in a 

 large volume of cold air. 



Many women use a fan to dry their 

 hair after a shampoo by placing it upon 

 a radiator and sitting in the draught. 



Helping heat a room 



Popular Science Monthly 



Electric Toaster Eliminates 

 Burnt Fingers 



TO those who have frequently burned 

 their fingers while turning over 

 the toast on their electric toaster, the 

 new toaster recently added to the elec- 

 tric devices now on the market will prove 

 an interesting improvement. 



By turning the knob near the bottom, 

 the frame holding the slice of bread to 

 the heater coil is thrown outward, while 

 wire catches at the bottom trip the toast 

 so that it slides along the frame, browned 

 side down. On turning the knob back 



The new electric toaster and sketches 



showing how it turns the toast without 



picking up with the fingers 



again, the toast is raised to a vertical 

 position with the fresh side toward the 

 heater. By this ingenious arrangement 

 it is not necessary to touch the toast with 

 the fingers until it is ready for buttering. 



Don't Decarbonize Aluminum Pistons 



OWNERS and drivers of automobiles 

 in which the pistons are of alumi- 

 num alloy, should be very careful in us- 

 ing "decarbonization" methods. Unless 

 all experiments are wrong, it is bad pol- 

 icy to use the oxygen-acetylene flame for 

 this purpose. Aluminum oxydizes much 

 more rapidly than iron, under the infliv 

 ence of oxygen, and in the extreme heat 

 of the oxy-acetylene flame still more 

 rapid oxidation is probable. Until exact 

 tests show that the oxidation is not fast 

 enough to worry the motorists, the lat- 

 ter should steer the safe course and use 

 some other method. 



