38 Popular Science Monthly 



A New Device Mixes Moist Air with How to Tie a Steel Cable in a 



'Jug. 



Gasoline Fuel 



Handle" Knot 



OPERATING on 

 the same prin- 

 ciple as the diaphragm 

 pump, the device il- 

 lustrated, automatic- 

 ally draws a certain 

 amount of moist air 

 from the radiator of 

 an automobile and de- 

 livers it into the gaso- 

 line intake manifold. 

 The amount intro- 

 duced is automatically 

 controlled by the suc- 

 tion of vacuum of the 

 motor, which draws 

 the diaphragm of the 

 device against 

 a cone-shaped 

 adjusting 

 screw that 

 serves to vary 

 the amount 

 passing 

 through a 

 hole in the 

 center of the 

 diaphragm. 



I 



The device draws moist air from 

 t±ie radiator, as shown above 



Moist air 

 Flexible tubey _ 



Overflow pipe 



Diaphragm 



Adjusting screw 



P^^ilHoiein diaphragm 

 Glassm ^ 



;lntake pipe 



Illustrating how the 

 moist air increases 

 the engine efficiency 



Utilizing Garbage to Lower the 

 Price of Pork 



OUT in Omaha City, Omaha, the 

 people are not worrying about the 

 soaring prices of pork. The hotel men of 

 the city have formed themselves into a 

 hog-raising organization, and a chain of 

 restaurants contributes the table and 

 kitchen refuse to feed the 

 hogs, fattening them for the 

 market in record time. 

 In Hull, Mass., the 

 same idea of utilizing 

 garbage to prepare live 

 .stock for the market, is 

 carried out under the 

 city management. Land 

 for pasturing and hous- 

 ing is loaned free and 

 the only expense is the 

 salary of one man who 

 takes care of the herd. 

 The city then controls 

 the price of the pork. The four operations necessary to tie the "Jug-handle" knot 



N order to splice a 

 steel cable, it is 

 necessary to make a 

 knot which v.ill not 

 slip or untie. Cable 

 men employ what is 

 known as the "Jug- 

 handle" knot. This is 

 made by grasping the 

 rope in the left hand 

 and forming a loop, as 

 in Fig. 1, with the 

 thumb at the cross. 

 Next bring the loop 

 down so the center 

 of it rests under the 

 thumb, as in 

 Fig. 2. Hold 

 the loop 

 firmly under 

 t h e'^ left 

 thumb and 

 turn the 

 right half 

 over toward 

 the back and 

 downward, 

 then turn the 

 left loop back 

 and place it behind the strand which has 

 been held under the thumb. The knot is 

 now like Fig. 4. Next, place the finger 

 and thumb of the right hand through the 

 space marked with a cross in Fig. 4 and 

 grasp the strand which was first held 

 between the thumb and forefinger, in the 

 original position. Care 

 must be taken to grasp the 

 strand between the two 

 strands which are held in 

 the left hand. Pull this 

 strand through and the 

 knot is tied. The rope 

 will twist and turn as it is 

 pulled through, but it will 

 ruot tangle. 



