282 AMERICAN HOMES* AND ~GARDENS April, 1906 
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f waRK REY? 
PITTSBURGH 
THE VALUE 
of a GALVANIZED SHEET can be fixed only by 
its efhciency. If it is always the same, works easily, 
is pliable, tough and even in gauge; if, when once 
applied, it gives satisfaction, and offers protection 
without endless repairs—cost should be the last factor 
to consider. 
Our Apollo Best Bloom Galvanized Sheets have been favorites for many 
years just because they do come up to high-quality specifications, and because we 
do not forget efficiency when meeting the market demands for reasonable price. 
You know Apollo Sheets—but do you demand them of your jobber? If 
not, do so—for everyone is better off when they are used. Send for our Apollo 
Weight Card. 
AMERICAN 
SHEET ©& TIN PLATE 
COMPANY 
FRICK BUILDING PITTSBURGH, PA; 
‘“*“BALL-BEARING ’’ 
Grand Rapids sist Sash Pulleys 
ED are sold direct to Builders, 
Contractors and Mills at prices 
under the common, ordinary 
coods. 
q If you make ten or ten thou- 
sand window frames, we can 
save you money and give you a 
superior sash pulley. We are 
the largest sash pulley makers tn 
the world. We ship direct, or 
through dealers and jobbers 
everywhere. 
@ Write for catalogue and free samples and prices on half-gross, gross,’ barrel or any 
quantity. Direct from the makers to you. Inquiries welcome. 
GRAND RAPIDS HARDWARE CoO. 
1Z7 Pearl Street, Grand Rapids, Michigan 
Ejecting Single Gun, models 1905. In the 
above summary of goods every mechanical of- 
fence known to the manufacturer of these 
types of arms has been effectively avoided, and 
the pistol or gun is representative of the in- 
tentions, facilities and means of the Worcester 
enterprise to sustain the reputation of its sec- 
tion of the country in a pre-eminent industry. 
Warm Air Generators 
os ‘THOSE seeking information upon the 
hot air heating system, we call attention 
to a type selected from among many 
various apparatus that have gained ex- 
ceptional reputation through long established 
service. It is a warm air generator, and 
is shown in sectional view in the illus- 
tration presented herewith. It takes the form 
of a heater, in which heavy cast-iron sec- 
tions with corrugated sides, through which is 
circulated fresh air, constitute the fire-box and 
combustion chamber, and are exposed on all 
sides and throughout their length to the fire 
and hot gases, thus yielding an exceedingly 
large surface to the fire. Through this gener- 
ator warm air may be directed in separate and 
independent channels, and distributed in such 
proportions as to insure uniformity of heating 
in different parts of a house or large edifices, 
such as schools, churches and institutions. The 
engraving shows three sections removed, and 
gives the inside and outside casings, cast-iron 
back pipes, etc. “The outside casing is of gal- 
vanized iron and the upper half is lined with 
asbestos sheathing, and this, in turn, with tin. 
There is a space of three inches between the 
two casings, which acts as an air chamber, open 
to the fresh air supply below and to the hot 
air pipes above. ‘The warm air is sent in 
separate currents through from nine to seven- 
teen corrugated cast-iron flues which form the 
fire cylinder and combustion chamber. Each 
flue weighs seventy pounds, and has eight 
square feet of heating surface. “These separate 
currents of warm air are forced to every part of 
a building. ‘They move or rise rapidly, and 
there is no superheated or scorched air, but an 
abundance of fresh air—enough for heat and 
ventilation—is properly warmed. ‘hese warm 
air currents are positively controlled and sent 
in any direction, through long or short pipes, 
to every room in a house, whether the location 
is exposed or not. Even temperature easily 
maintained throughout a house is also healthful 
and economical heating and places the ap- 
paratus above the ordinary furnaces. It is made 
by the Kelsey Heating Company, of Syracuse, 
N. Y., and fully covered in construction and 
arrangement by United States patents, five in 
number. ‘There is no difference in the inter- 
nal construction of the “Kelsey.” ‘There are 
six sizes of the regular portable style, each size 
being numbered according to the diameter of 
the grate surface. In heating capacity the 
range is from five to ninety thousand cubic 
feet. It is also made with a double feed door 
for admitting large pieces of wood, and has a 
wood burning grate. An attractive feature 
for the portable heater is an ornamental cast- 
iron front, and this, in combination with the 
side wings, is used in a brick set construction, 
frequently specified for public buildings. The 
heater is also supplied with a hot water attach- 
ment, at a small cost, that affords an ample 
quantity of hot water for kitchens, bathrooms, 
laundry purposes and _ conservatories. A 
marked reinforcement to the caliber of heaters, 
both in the matter of quantity and sanitation 
of warm air, is secured by placing two or more 
“Kelsey Generators’ under one dome casing 
in large residences. Besides the advantages 
gained in ventilating by this system, one gen- 
erator only is needed in moderate weather 
before and after the severe winter months. It 
