IMPROVEMENTS IN INCUBATORS
Year: 1872

page_text: LETTERS
PATENT to Frederick William Salmon, of Bishopton,
Stratford-on-Avon, in the County of Warwick, for the Invention
of "IMPROVEMENTS IN INCUBATORS."
Sealed the 16th July 1872, and dated the 23rd January 1872.
PROVISIONAL SPECIFICATION left by the said Frederick William
Salmon at the Office of the Commissioners of Patents, with his
Petition, on the 23rd January 1872.
I, FREDERICK WILLIAM SALMON, of Bishopton, Stratford-on-Avon,
in the County of Warwick, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN INCUBATORS," to be as follows:―
This Invention relates to simple and efficient improvements in
incubators to be employed for hatching eggs.

page_text: it is desired to hold for hatching. The box is provided with a partition
placed horizontally or nearly so at about three inches from the top, and
with a trough extending all round the inside and about three-quarters
of an inch wide. Under this partition is a boiler or hot water compart-
ment formed by the partition and by a similarly placed one at about 5
three inches below the same. The boiler is provided with a feeding pipe and
with a cock for withdrawing the water therefrom. Beneath the boiler is a
smoke or hot air chamber or compartment, having a hole in the front to
admit an " Argand" gas burner when it is desired or is most convenient
to heat the apparatus by gas, and also a similar hole placed at about the 1
centre of the bottom for the chimney of a lamp to pass through when
it is desired or is most convenient to heat the apparatus by such means.
The smoke and superfluous hot air are carried off from the chamber by
means of a small exit tube, pipe, or chimney.
The trough above mentioned must be always kept nearly full of 1
distilled water, which when the apparatus is in proper working order
supplies a very fine moisture to the eggs in the top compartment, which
moisture acts upon the eggs in a similar manner to the natural per-
spiration of the hen or mother bird. The trough is provided with a cock
for the purpose of drawing off the water therefrom when necessary.
The top compartment is provided with a layer of silver sand in which
the eggs to be hatched are laid, and when the apparatus is in use it is
kept steadily at about a hundred and two or a hundred and three degrees
Fahrenheit, and is covered with a scarlet flannel top, or by glass, so as to
admit sufficient air to the eggs, but not to allow the escape of the
necessary heat.
2

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frederick William Salmon in the Great Seal Patent
Office on the 23rd July 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
WILLIAM SALMON, of Bishopton, Stratford-on-Avon, in the County
of Warwick, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of January, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Frederick William Salmon, Her
special licence that I, the said Frederick William Salmon, my execu-
tors, administrators, and assigns, or such others as I, the said Frederick
William Salmon, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of
Great Britain and Ircland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN INCUBATOES," upon the condition
(amongst others) that I, the said Frederick William Salmon, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of my said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Frederick William Salmon, do hereby
declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement in writing, and on reference being had
to the accompanying Drawings, that is to say:-
This Invention relates to certain very simple and efficient improve-
ments in incubators to be employed for hatching eggs.
'
On the accompanying Drawings illustrating the same, Figure 1
represents an isometrical projection, and Figure 2 a cross central
vertical section.

page_text: same is to be or may be performed or carried into practical effect, I
would remark in conclusion that I claim as my Invention the peculiar
general construction and employment of incubators, substantially as
above described, and as illustrated on the accompanying Drawings, or
ny mere modification thereof.
same is to be or may be performed or carried into practical effect, I
would remark in conclusion that I claim as my Invention the peculiar
general construction and employment of incubators, substantially as
bove described, and as illustrated on the accompanying Drawings, or
ny mere modification thereof.
In witness whereof, I, the said Frederick William Salmon, have
hereunto set my hand and scal, this Twentieth day of July, in the
year of our Lord One thousand eight hundred and seventy-
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ny mere modification thereof.
In witness whereof, I, the said Frederick William Salmon, have
hereunto set my hand and scal, this Twentieth day of July, in the
year of our Lord One thousand eight hundred and seventy-
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