82 
Rouse & G ar den 
5 TANLEY Garage 
Hardware is not just 
“hardware”—it is a spe¬ 
cialty; planned, designed 
and manufactured to suit 
the special requirements of 
the garage you use every 
day and in which you take 
a pride. 
Th e Stanley Works 
New Britain, Conn. 
New York, 100 Lafayette Street 
Chicago, 73 East Lake Street 
Greater Heating Comfort 
Per Ton of Coal 
A full understanding of a few simple facts will set you straight on 
this important subject. Whether you own a home or manage a 
factory or office building you will find these suggestions of value. 
S TEAM must flow freely through a heating system before it 
can give up its useful heat. The usual obstructions are air 
and water. Unless they are removed, the radiators will be partly 
cold, partly hot. A hotter fire only aggravates the trouble. 
Old systems provided only one pipe to each radiator. These 
can be identified by their knocking and pounding and by the 
valves that hiss steam and leak water. Best engineering practice 
provides for each radiator a trap which automatically removes 
the heat-wasting air and water and sends them back to the boiler 
room through a separate pipe. 
In 1903 steam heating was revolutionized by the invention of 
the Dunham Radiator Trap—one of the exclusive devices that 
give Dunham Heating Service a peculiar advantage. It is not 
necessary to go into details of the trap: the fact that it is used in 
the Woolworth Building and in thousands of fine homes and 
country estates—all these argue for exceptional merit. 
The same is true of the Dunham Packless Radiator Valve. It 
is fastened to the top of the radiator—no stooping to turn on the 
heat—and it cannot leak for there is no packing in it to wear out. 
Dunham Heating Service will design a steam heating system for 
you, using the particular type of boiler and radiator you prefer, and 
will see that the installation is properly made and will thereafter 
make inspections when requested to insure continual satisfaction. 
C. A. DUNHAM CO., Fisher Building, CHICAGO 
Marshalltown 
Iowa 
Toronto 
Canada 
Steam heating contractors who desire new busi- Existing steam heating systems can be Dun- 
ness should write for details of our Service hamizedat a comparatively low cost. Write for 
Station Plan. Our products are of only one the entire story o f Dunham Heating Service. If 
quality—the highest. you cannot profit by it now, you will someday. 
l^isy, fialfkot radiators yyaste fieat. srcuiel In 
fy/fey should be PUNHAMIZED J| “fata" 
The Birds Are Coming! Heralds of Spring • 
Dodson Bird 
i 
