ACCESSORIES AND APPLIANCES 
only lets through the partition the hen 
that has laid, does away with this trouble. 
I would advise poultrymen, who have 
not already done so, to try this new trap- 
nest and report their success with it. If 
such an invention can be made to work 
well and be reliable at all times, it will 
make the trap-nesting of a flock of hens 
a very simple and easy matter. 
INCUBATORS 
Key to Plans and Specifications 
Study the cuts well as you proceed with the con- 
struction. 
Box is the inner case of the incubator. 
The sign ” at the upper right of number means 
inch or inches. 
Board is lumber %” thick. 
1x4 means lumber about 4” wide by %” thick. 
2x4 means lumber about 1%” by 3”. 
4” ceiling is about 3%” wide by 4” thick. 
Rip is to cut lengthwise with a saw. 
Thermostat lever is the wire extending from in- 
side of incubator to outside. 
Fulcrum bracket is the support for damper lever 
and can be seen in Fig. 3 fastened to back side of 
heater. 
Damper is a round disc of tin or sheet-iron 
which fits over upper end of heater pipe (F) and 
is swung to front end of damper lever. 
Connecting rod is a small wire with thumb-nut 
at lower end for adjusting regulator and connects 
thermostat lever with damper lever. 
The front of the machine is the side the door 
is on. 
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