EVEMYTMEMQ FOR FARM AMP GALtDEM 
PRAIRIE STATE INCUBATOR 
WRITE FOR PRICES AND CATALOGUE. 
'I'llL- Impiuvcd Prairie .SUtc Xucubutor is not only tlie most succiissful lialclier. 
Lint It IS houestly nmde— a dependable, durable machine tluough and through. 
I'here is not a part about it that we are not anxiaus to thoroughly explain 
ihey are made to automatically adjust themselves to existing conditions, and 
consequently they overcome the possibilities of neglect or ignorance of the oper- 
ator. When you stop to consider this, it means a great deal, as even the expert 
operator is hable to forget his iiiacliiiie. and if it does not adjust itself automatical- 
ly the chance for spoihng the entire .setting of eggs is quite possible. 
In building the Improved Sand Tray Prairie State we have covered every 
possibility that might arise which would work detrimentally to the linal resnll — 
getting the highest number of strong chicks from the eggs set: and the manv 
many experiments and tests made, not only bv us but by others, amateurs .inil 
experts, under the most adverse circumstances, have proven that wc have a ma 
chine wliicli lueets all comlitions sueeessftUly — a machine that any one can oper 
ate, a niachme that will do the work as no other will, for no other is built jiisl 
like It. 
Nothing has been overlooked that goes to make up a practical and successful 
hatcher, it eoutaiiis many new featiiies. among which are the following; 
FIRST— The eddy current or automatic gravity heat distributor. 
SECOND — A new triangular toggle-joint, thermostatic, automatic heat 
regulator, that has live times the thrust of any tliermostat lierctofore used by us. 
THIRD— Automatic ventilation. 
FOURTH — Automatic and nuiform moisture supply. 
FIFTH - Supplemeutai y ventilation for drying olV and liiirdening the chicks 
before removing to brooders. 
SIXTH — Largest air space above and below the eggs of any incubator. 
SEVENTH — Removable biu-lap mats in bottom of nursery, making easy to 
clean, a j 
EIGHTH— A warm nursery, so that chicks can be incubated and the nmsei v 
used 111 the very coldest of incubator rooms. 
NINTH— Egg trays 
without change. 
i^ontain any si^e (Jf eggs— lieu, duck or liaiitam 
TENTH— Combination system of heating that gives the best all round results 
ELEVENTH— The colllbinaliou of elements that produce the largest and 
strongest chick that has ever been hatched artificially. 
TWELFTH — .\ durable, well-built iiiachiue that will last. 
The Sand Tray Prairie State Incubator consists of au inner case known as 
an cgg-chainber and au outer case built of selected lumber, thoroughly seasoned 
and dried. Some manufacturers, making a virtue of necessity, claim some one 
particular kind of wood is the only one that will build a good incubator The 
kind ot lumber from which an incubator is made has absolutely nothing to do 
"ilh Its liatehing qualities. It is merely a matter of liiiished appearance and the 
most a\ailablc malcrial at hand for the manufacturer that makes him rii-e prefer 
oiKc ki iiiiv- one kind ol hiiiibcl 
■ , k'^^'- "i^K' iiil obtainable, and we kiln-dry all our lumber in our own 
kiln. I he outside and inside is made of either cypress, ehestuut. poplar, white 
or yellow pine, any of which will make a lirst-class incubator. The legs of Ibcse 
iiKichiiics are hard maple, nicely turned and tinislied. 
The radiant-heat method, of whicli the Prairie State has always been the best 
example, IS still retained in our present design, and has always been a distineUve 
Icature of a Prairie Stale machine. The heat is applied to the upper part of the 
egg-chamber Ijy means of a metal radiator. Wc use the radiant heat in combiiia- 
of"'both ^ °f heating and have secured the beneficent features 
I f",.^',"'.,!"?.'^'^'"- ^^t'-'' Incubator vve have emboJied a new principle in 
heat distribution. We use t he eddy emrent as a vehicle for carrying the hot air 
lo the cold parts of the niachme. thus changing it from a detrimental to a beiu 
hcent feature. The greater the dillercilce of the temperature in the radiator the 
more rapid is the induced circulation. We practically secure by means of a grav- 
ity circulation the same result that is atUiiied by a mechanical agiUtor in the 
The ventilating current in the egg-chamber, whether on full or shut oH com- 
pletely, does- not influence the self-evening or automatic heat distribution, nor is 
llic heat distribution affected by the width of the opening of the regulator valve- 
a feature not possessed by any other system of heat distribution. 
We guarantee the distribution of heat to be more uniform under greater raiiKe' 
of lemperature than in any other incubator on the market. 
'IMie lieat is so uniformly distributed that we use a flat tray iu the largest ma- 
ehine. Ihe flat-bottom tray conduces to the quickness and ease in turning. 
The eggs can be moved and mixed in less time than in any other way The 
sloping tray in au incubator indicates a hot centre. If the slope is correct for a 
warm room, it will be wrong for a cold room. The result is a compromise, with 
more or less faulty heat distribution. 
The thermosUt is of eiitiicly uew design, cousUucted of heavy channel steel 
triangular in fomi, with channel zinc toggles iu the center. It is very powerfiU 
and sensitive. The rivets we use jii assembling are three-sixteenths of an iiicli 
and onc fourth of an inch, respectively, in diameter, having froui ten to twenty 
times the strength in construction of methods used by other manufacturers in 
assembling toggle-joint thermostats. The thermostat will not collapse nor break 
in use, has hve times the thrust of the thermostat we have used heretofore and 
wc had no complaints m regard to the eflieieney of our former regulators. 
The heater used upon tlie Prairie State Incubator is placed outside It is 
upped, seamed, riveted and soldered. It is absolutely gas-tight and will not 
leak, it IS easy of access, and all soot deposits, in ease they occur can be readilv 
removed. The heater is insulated with a cellular fire-prouf asbestos jacket cov- 
ered with a neat hood, and every precanlion has been taken to secure protection 
Iroiii injury and neatness of appearance. The heater is one of the most vital poiuts 
of an iiicnbator. 1 lit heater is very economical on oil. the air from the lamp 
being coole<l very low before exhausted. The heater exhaust is a small round 
pipe and so arranged that the fumes from the lamp can be piped off 
No. 0 -100 eggs 
No. I -^150 " 
No. 2 240 " 
No. 3 390 " 
Price $22.00 
28.00 
38.00 
" 45.00 
S5 
THE PRAIRIE STATE UNIVERSAL 
HOVER 
As the name of this hover implies, it has a wide or universal sphere of useful- 
ness. Iu fact, there is practically no limit to its adaptability. It may be used 
or attached to any form of outdoor brooder that is two feet or more in height: 
to any si2e or form of colony house, mushroom house, small portable buildiug. 
dry goods box, shed, coop or organ or piano box. 
Where regular colony houses are used the Universal Hover eau be attached 
lo one until the chicks have been given a good st;irt. and then removed to another 
loi a new brood. In this way it can be utihzed to accomplish the work of four 
or live expensive combination colony brooders. It has proven to be thoroughly 
practical m actual service, giving perfect satisfaction during coldest weather of 
winter, changeable conditions of spring and the heat of summer. 
licoiioiiiy is one of its special features, aside from its wide range of adaptabil- 
ity, as will be seen from the fact that only a small No. 2 Sun Hinge Burner is re- 
quired to furnish all the heat necessary in the coldest weather. In presenting this 
hover to the poultry -raiser we are eonhdent that it will give him more real genuine 
satisfaction than any device ever put out. It lills that want felt by every one who 
raises poultry, for something they can use for this purpose anywhere, any time 
and do the work well. We use this hover in three difl'erent sizes and models of 
outdoor brooders, and also arrange it for several sizes of indoor brooder. 
Price, $8.50; with Regulator, $9.50. 
