Popular Science Monthly 



The Full Dinner Pail. 



It's Built Like a Fireless 



Cooker 



A THERMOS bottle will 

 keep your coffee hot, so 

 why not the thermos pail to 

 keep your entire dinner at 

 the proper temperature, 

 whether cold or hot? By- 

 ron Bruegger, of Wisconsin, 

 thinks such a pail will be in 

 so great a demand that he 

 has taken out a patent on 

 a design for one. 



The bottom of an ordinary 

 lunch pail has an extra wall 

 in it, around the outside of 

 which the air has been ex- 

 hausted. In preparing for 

 the day's p icnic, the desserts, 

 the butter and the other victuals that are to 

 be kept cold are placed in the very lowest 

 chamber. A rather shallow chamber from 

 which the air has been practically removed 

 is provided on top of this cold chamber, 

 and into this "vacuum" chamber the meats, 

 vegetables and the other hot dishes are 

 placed. Over this chamber 

 is a layer of asbestos. Then 

 comes another hot food 

 chamber. We have, there- 

 fore, a poor heat-conducting 

 medium surrounding the hot 

 and the cold chamber and 

 separating the one from the 

 other. Little heat can pass 

 either in or out of the cham- 

 bers and the cold dishes 

 will stay cold and the 

 hot ones will keep hot 

 for a reasonable length 

 of time. 



Other dishes that are 

 to remain at ordinary 

 temperatures occupy the 

 remainder of the pail. 

 A neck is even provided 

 on the cover of this pail 

 to provide a place for 

 a drinking cup. With 

 such an arrangement 

 an entire family on an 

 outing could be sup- 

 plied with a dinner com- 

 plete from soup to ice 

 cream and everything 

 at the most desirable 

 temperature. 



Asbestos laye 



The turntable is 14 feet in diameter. The motor operating 

 it is mounted in a pit at the edge of the turntable pit 



Electrically Operated Turntables 

 for Automobiles 



A TURNTABLE that is operated by an 

 electric motor, by means of a push 

 button, is very valuable where the confines 

 of the yard are so narrow that an auto- 

 mobile cannot be backed out without risk of 

 sidewiping the house or fence. The motor 

 is controlled by means of a push-button 

 hanging down from an arm so that it is 

 within the reach of the driver of a car when 

 it is driven on to the turntable. The table 

 is supported by wheels with roller bearings 

 traveling on an iron track, within a pit. 

 This iron track is placed out near the 

 edge of the turntable. This arrange- 

 ment keeps the turntable from tipping 

 when a car is driven on or off of it. 

 The motor is connected 

 with a sprocket wheel by 

 means of worm drive. 

 A sprocket chain driven 

 by this sprocket wheel 

 extends around an an- 

 gle-iron ring which is se- 

 cured to the underside of 

 the table near the per- 

 iphery. This wcrm 

 drive keeps the turn- 

 table from skidding. 



The advantages of 

 such a device in a small 

 private garage and even 

 in public garages where 

 space is usually at a 

 premium, are numerous 

 and obvious. 



Normal 

 temperature 

 hambers 



Vacuum chamber 

 false bottom 



Separating wall 

 Vacuum chamber 

 Cold food 

 chamber* - 



Vacuum chamber 



Everything from hot soup to ice cream 

 can be put into this picnic dinner pail 



