A New Method of Preserving Eggs.
Year: 1894

page_text: Date of Application, 5th Feb., 1894
Complete Specification Left, 31st Oct., 1894-Accepted, 1st Dec., 1894
ROVISIONAL SPECIFICATION.
A New Method of Preserving Eggs.
I CECIL KIDSON 23 Manchester Old Road Heaton Chapel near Stockport
Cheshire Commercial Traveller do hereby declare the nature of this invention to
he as follows:-
I immerse the eggs in a weak warm solution of gelatine in which some
bichromate of potash has previously been dissolved; the shells of the eggs being
porous will after a short time become saturated with the solution; I then remove
the eggs and allow them to dry exposed to the light. The chemical action of the
light on the shell saturated with gelatine & bichromate of potash will cause it to
become perfectly damp-proof and airtight and thus secure the contents of the eggs
from all outside decomposing influences.
I make the solution of gelatine and bichromate of potash sufficiently weak so
that after the eggs are dry it is not visible on the surface of the shells.
Dated this Third day of February 1894.
CECIL KIDSON.
A New Method of Preserving Eggs.
I, CECIL KIDSON of 23 Manchester Old Road Heaton Chapel near Stockport
in the County of Lancaster Size Manufacturer do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
I immerse the eggs in a warm solution of gelatine in which some bi-chromate of
potash or other chromate has previously been dissolved and leave them immersed
for two or three minutes, I then remove the eggs and place them to dry on fine
wire or string netting exposed to the light; the chemical action of the light on the
shell saturated with the aforesaid solution causes it to become perfectly damp
proof and air tight, and thus secures the contents of the eggs from all outside
decomposing influences.
Any strength of solution will do but I find one which will just form a jelly when
cool is the most suitable as it is more readily absorbed by the shell than a stronger
one and does not discolour it.
The proportion of bichromate of potash that I find gives the best result is one
part to two thousand parts of this solution of gelatine, as this makes a mixture
which will not discolour the shells of the eggs which have been treated, but it may
be increased or diminished according to circumstances. I use the bichromate
of potash in preference to the other chromates because of its abundance and low
price.
The best and clearest gelatine is the most suitable for the mixture as the
solution does not alter the appearance of the surface of the eggs, but any kind of
glue or gelatine will answer the purpose.
Eggs preserved in the above manner may be exposed to the atmosphere and
light and packed in the usual way and they will keep fresh for six months or
longer.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
The method above described for preserving eggs, which consists in immersing
the eggs in a solution of gelatine and bi-chromate of potash or other chromate and
exposing to the light to dry for the purpose of making the shells air tight and
damp proof.
Dated this 20th day of October 1901
CECIL KIDSON.