The RURAL NEW-YORKER 
353 
Something 'Worth Knowing 
About Batteries 
Inside the Still Better Willard Battery are four im¬ 
portant things, hard rubber jars; plates; battery solu¬ 
tion, and Threaded Rubber Insulation. Each cell 
consists of a jar with plates, solution and insulation 
sealed up inside of it. 
The hard rubber jar insulates each cell from the 
other cells in the battery 
The Solution is a mixture of 
sulphuric acid and water. The 
acid does not have to be re¬ 
newed, but you have to renew 
the water by adding a little 
every two weeks or so, to 
keep the level above the tops 
of the plates and to take care 
of the evaporation. 
The Plates are of two kinds, 
positive and negative. Chemical 
action between them and the 
Solution makes the electric cur¬ 
rent which operates starter, and 
lights, and furnishes the spark. 
The Insulation between pos¬ 
itive and negative plates is the 
all important item. Ordinary 
insulation almost always wears 
out before any other part of the 
battery. Threaded Rubber In¬ 
sulation lasts as long as the 
plates and does not have to be 
renewed. That is why it has 
been termed one of the greatest 
of the many remarkable battery 
improvements of the Willard 
organization. Ask the nearest 
Willard Service Station to tell 
you more about it. 
IVi1lard Service . 
Threaded 
Rubber 
Insulation 
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STORAGE 
BATTERY 
Willard Threaded Rubber Insulation 
