An Improved Cooking Skewer.
Year: 1891

page_text: Date of Application, 7th Dec., 1891-Accepted, 9th Jan., 1892
COMPLETE SPECIFICATION.
An Improved Cooking Skewer.
I, JOHN Cox, of 4 High Street, Rotherham, in the County of York, Clothier,
lo hereby declare the nature of this invention and in what manner the same is to
e performed, to be particularly described and ascertained in and by the following
tatement:-
This invention relates to the construction of a skewer shaped thermo-indicator
r cooking gauge, by the use of which the condition of a joint of meat or the like
nay be ascertained.
An Improved Cooking Skewer.
I, JOHN Cox, of 4 High Street, Rotherham, in the County of York, Clothier,
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:-
This invention relates to the construction of a skewer shaped thermo-indicator
or cooking gauge, by the use of which the condition of a joint of meat or the like
be ascertained.
nay
have mustrated one of my cooking shewers in the annexed sheet of drawings in
which,
Fig. 1, is an elevation of the instrument, and end view.
Fig. 2, side view of same.
Fig. 3, section of same.
In carrying out my invention as illustrated in the accompanying drawings, I
will first premise that (broadly speaking) the instrument consists of a glass
tube T, with a bulbous enlargement B, suitably charged with mercury M, and
protected by an outer metallic tubular covering C, having at one end a spike
or point P, and at the other (where the glass tube is partially exposed) a scale or
index S.
I construct a metallic tubular covering C, preferably of copper as being a good
conductor of heat, but any other suitable metal may be used if preferred.
The interior of the covering as shown in the drawing is made of two diameters
the lower and larger part is to receive the bulbous enlargement of the glass tube,
and the upper part is to receive the continuation of the mercury tube, the outside
being kept of one diameter, but I may if found desirable retain the same strength
of material throughout and reduce the diameter of the metallic cover in the same
ratio as that of the glass tube. A portion of the upper part of the metallic covering on
one or both sides is removed so that the glass tube T, and the action of the mercury
can be plainly seen.
To the upper part of the metallic cover C, I secure one or more projecting
wings W, which are enamelled or otherwise prepared so that the scales, figures or
other means of indication S, marked thereon may be easily seen.
The scales or indicating lines may for example be arranged as shown, in sets of
three lines, the shorter one representing "underdone" the centre one "better done"
and the long upper line "well done."
The lower set S¹ would be the cooking scale for beef, mutton, and similar meats,
the second set S' for fish, and the top set S³ for pork, and similar materials that
require greater heat, but I wish it to be understood that I only give this arrange-
ment as an example of how the indication may be carried out, as this may evidently
be varied.
The wings may also be varied in shape, and may be made to turn upon the
tubular part so as to cover and protect the glass tube when not in use.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed or carried out, I declare that
what I claim is :-
An indicating cooking skewer, consisting of a glass mercury tube enclosed
in a metallic tubular case provided with a point at one end and a scale or

page_text: indicator at the other, for the purpose specified and substantially as described and
shown.
Dated the 3rd day of December 1891.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.