Improvements in Apparatus for Testing Eggs.
Year: 1890

page_text: Date of Application, 25th Apr., 1890
Complete Specification Left, 26th Jan., 1891-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Testing Eggs.
I, HENRY LACY, of Wood Cottage, Middleton, in the County of Lancaster,
Gentleman, do hereby declare the nature of my said invention to be as follows:-
This apparatus consists of a conical chamber, by preference of sheet metal at
the larger end of which an orifice corresponding in shape to an egg is formed.
Accross this orifice the egg is capable of being clamped by a hinged frame pro-
vided with a spring of sufficient strength to hold the egg in position. Through
the other or smaller end of the chamber a conical tube or eye piece is inserted
having its smaller diameter pointing towards the central axis of the orifice herein-
before mentioned whilst its larger diameter projects outwards to shade the eye of
the user.
By inserting an egg within the clamping frame and holding this apparatus up to
the light-the state of the egg can be ascertained by transmitted light.
Dated this 16th day of April 1890
JOHN G. WILSON,
Patent Office, 55, Market Street, Manchester, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Testing Eggs.
I, HENRY LACY, of Wood Cottage, Middleton, in the County of Lancaster,
Gentleman, 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 :-
The object of this invention is to construct a suitable apparatus for the purpose
of testing eggs and afford a means of determining whether an egg is fresh or not
and also enable the state of an eggs to be ascertained whilst being "sat upon " or
during incubation from time to time.
On the accompanying drawing
Fig. 1 is a side exterior view and
Fig. 2 a plan view of my improved egg testing apparatus.
Fig. 3 is a side sectional view of Fig. I on the line a-band
Fig. 4 is an inverted plan view of the apparatus.
The improved apparatus consists of a conical chamber a constructed of by
preference sheet metal at the larger end of which is formed a cup or recess b, (cut
away at the front edge to allow of the introduction of the egg) and an orifice or
opening e corresponding in shape to the egg d.
с
In this cup or recess b and across the orifice c the egg d is placed and is clamped
or held in position by the wire clamping-frame e, the extremity of which clamping-
frame is coiled as illustrated and secured to the side of the chamber a and so
forms a spring of sufficient strength to hold the egg in its place.
At the other end of the conical chamber a and affixed thereto is a tube or eye-
piece arranged so as to point to the central axis of the orifice c, the tapering or
projecting sides of the chamber a serving to shade the eye of the user.
It will be readily observed that by inserting an egg within the cup or recess b
across the orifice c and beneath the clamping-frame e and by holding the apparatus
up to the light and looking through the tube or eye-piece f the state or condition
of the egg can be ascertained by transmitted light.
In some cases and where it is desirable I affix a lens in the eye-piece or tube f
50 as to magnify the effect and obtain a better result.

page_text: Having thus 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 :-
1st. The improved construction and arrangement of parts constituting my
improved egg testing apparatus substantially as hereinbefore described and
illustrated on the accompanying drawing.
2nd. The employment of a conical or other similar shaped chamber with an egg-
shaped orifice and a suitable clamping device for holding the egg in position at
one end and an eye-piece or tube with or without a magnifying lens at the other
end substantially as and for the purposes hereinbefore described.
Dated this 24th day of January 1891.
JOHN G. WILSON,
Patent Office, 55, Market Street, Manchester, Agent for the Applicant.