ii AMERICAN HOMES AND GARDENS February, 1911 
ROOFS ELECTRIC INCUBATORS AND 
BROODERS 
FLOORS 
gros By Frederick E. Ward 
heated incubator over those making 
use of kerosene lamps and the like 
are so great, that as rapidly as cheap, re- 
liable power service becomes extended 
throughout the country, the hatching of 
eggs by electricity bids fair to displace all 
other methods. 
An electric incubator can be built at 
home by anybody who can make a wooden 
box and connect up ordinary incandescent 
lamps. Such a machine has not only the 
merit of being low in first cost, but of hav- 
ing nothing about it to wear out, and of 
being capable of giving perfect results 
with very little attention on the part of the 
operator. 
The photographs show the.first incubator 
built by the author, while the drawings give 
details of construction, drawn to scale, for 
a similar machine of fifty eggs capacity. 
Briefly, it consists of an outer and an inner 
wooden box, having the space between 
them packed with wool or other heat- 
retaining material. The eggs are placed 
in the inner box, which is warmed with in- 
candescent lamps controlled by a thermo- 
stat. 
qT advantages of an_ electrically- 
A concrete tank erected on estate of Edmund Tatham, 
Katonah, New York 
Frederick J. Sterner, Architect - - New York 
De Lancey A. Cameron, Builder - - New York 
Tank designed for storage supply of 15,000 gallons, 
built entirely of concrete reinforced with Clinton welded 
wire. Before roof was placed over tank, and during 
winter months, ice 10 inches thick formed on water 
stored therein. No cracks or leakage have developed. THE BROODER WITHOUT BOTTOM ILEATER 
The boxes should be made of well-sea- 
Clinton Wire Cloth Company g soned lumber about %-inch thick. Old soap 
boxes furnish good material for the pur- 
CLINTON, MASS. pose. For a fifty-egg machine the inner 
box needs to be 11 inches wide, 17 inches 
long, and 11 inches deep, all inside meas- 
Fireproofing Departments: urements. This box is to be left without 
Ceilings| ALBERT OLIVER, 1 MADISON AVE., NEW YORK tions | 22), toR_oF bottom except a slatted bottom 
Washington: Rosslyn Supply Co., Colorado Bldg. San Francisco: L. A. Norris, 835 Monadnock Bldg. alacyal ey 4 9 
Chicago: Clinton Wire Cloth Co., 30-32 River St. Seattle, Wash.: L. A. Norris, 909 Alaska Building which 1s to be put in half way down, thus 
Buffalo, N. Y.: Buffalo Wire Works Co., Inc. dividing the box into an upper and a lower 
compartment of equal depth. On top of 
the slats a double thickness of woolen 
blanket should be tacked, to support the 
eggs, as shown in Fig. 1. 
Eight electric lamps are required for the 
heating units. These are best mounted in 
porcelain receptacles as shown, four lamps 
in each compartment near its top. For 
110-volt circuits use ordinary 16-candle- 
power carbon filament lamps made for 230 
volts, and connect them as shown ja the 
diagram, where REG means regula'ur, or 
thermostat, and SS are snap switches to 
be placed on the outside, as shown in one 
of the photographs. 
It is hardly worth while to make a ther- 
mostat at home when one suitable for the 
purpose can be bought from a dealer in 
electrical supplies for about seventy-five 
cents; but it is not a difficult job for any- 
body who takes pleasure in doing such 
work. Fig. 2 shows a simple form of ther- 
mostat attached directly to the inside of the 
egg chamber. The essential part consists 
of two strips of metal riveted together as 
shown in the top view at A. Zinc and ~- 
steel (or iron) make the most effective 
combination; brass and steel (or iron) 
come next. The strips should be about 
Mineral Wool 
Free 
\ 
as shown in these sections, is Warm in Winter, 
Cool in Summer, and is thoroughly DEAFENED. 
The lining is vermin proof; neither rats, mice, 
nor insects can make their way through or live in it. 
MINERAL WOOL checks the spread of fire and 
keeps out dampness. 
i 
Sample and ay A House Lined with 
i 
CURRESPONDENCE SOLICITED 
U. S. Minera! Wool Co. 
140 Cedar St.. NEW YORK CITY 
VERTICAL SECTION. 
