M ay, 1919 
. .mil..... . . . 
Silent, tireless, automatic—ISKO manufactures cold 
Day and night this sleepless monitor stands chill vigil over human 
health—for its breath is cold and dry and pure as polar air. 
Isko converts the family ice box into a miniature cold storage 
plant. It may be placed on top of the ice box, beside it on the floor, 
in an adjoining room or in the basement — the result is the same, 
perfect refrigeration, dry, constant, economical. 
Two moving parts that revolve in oil; that is the s’implicity of Isko. 
A thermostat regulates the temperature, turning the motor on and 
off automatically; that is the vigilance of Isko. 
Both oil and refrigerant are permanently sealed in the machine. The 
user need not bother about them; that is the self-reliance of Isko. 
Vegetables entrusted to Isko stay garden-crisp. Isko keeps milk 
and butter fresh and sweet. Isko supplies cubes of pure ice for 
table use. And all electrically, without the iceman and his tongs, 
without ammonia and its dangers. 
Isko is as necessary to the modern household as the telephone —as 
unfailing in its service. 
Isko is also made in larger sizes for use in large homes, country 
estates, clubs, and commercial establishments. 
The isko Company, 111 W. Washington St., Chicago, III. 
Fits Any Ice Box. 
