Egg Saucepan.
Year: 1891

page_text: Date of Application, 20th Apr., 1891
Complete Specification Left, 27th Aug., 1891-Accepted. 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Signal Egg Saucepan.
HENRY GEORGE PLANNER Ironmonger 27 Eastcheap London E.C. do hereby
declare the nature of this invention to be as follows:-
A saucepan or other suitable vessel provided with a whistle or other suitable
contrivance to produce sound by being acted upon by steam generated in the
5 saucepan or other vessel.
2
H. G. PLANNER.
COMPLETE SPECIFICATION.
Signal Egg Saucepan.
I, HENRY GEORGE PLANNER of 1 Arthur Street East, in the City of London E.C.,
Ironmonger, 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:-
My invention relates to an improved saucepan, or other vessel, constructed in
such a manner that a sonorous signal placed in any suitable position thereon may be
operated by the escape of the steam generated, when the contents of the vessel
reaches boiling point, the object of which is that, culinary, or other preparations
that require particular attertion at this stage, such as eggs or the like, may be
prevented from spoiling by the whistle or other contrivance signalling that the
point of cbullition has been reached, and with a view to the better illustration of
my method of constructing said vessel I have appended hereunto a sheet of
drawings, in which
Fig. is a sectional elevation of a saucepan constructed according to my
invention in which the signal employed is a whistle arranged within and upon
the lid.
Fig. 2 is an external view of the upper part of a similar vessel, in which the
signal employed is connected to, upon and within the body of the vessel.
Fig. 3 is a view similar to Fig. 2 in so far as regards the form of signal
employed.
Fig. 4 is a side and plan view respectively of the dished disc employed in forming
the signal employed in Fig. 1.
Fig. 5 is a view of a mechanical signal adaptable for use with the methods of
c. nstruction shewn by Figs. 2 and 3.
In carrying my invention into effect I construct of any suitable metal a saucepan
or other vessel of ordinary form in so far as regards the body or containing portion
thereof A, the lid of which B, is provided with a rim C, which may be in some
cases much deeper than those in general use in order that when B is placed
upon A, C may preferably be in touch with, or slightly dipping into the liquid contents
of A, so that when ebullition occurs a steam generating chamber may be formed
by C and B. In the method shewn by Fig. 1, I provide in any suitable part of B,
a small hole D, and solder, or otherwise fix upon the inside of B, a small dished
disc E, Fig. 4, in the centre of which is a small hole F similar to D, and by
arranging E upon B so that the holes D and F coincide with each other an outlet.
passage or exhaust is formed for the steam generated within C, and as this passes
through F and D under pressure a whistling sound is given off which becomes

page_text: intensified as the power of steam is raised, thereby giving the signal that the
contents of A has reached boiling point and needs attention.
Although it is obvious that my said signalling devices are adaptable for attach-
ment to almost any and every kind of vessel in domestic use for boiling liquids,
have chosen to illustrate its adaptability for use upon a saucepan used for boiling
eggs. With this in view I have shewn in Fig. 1, the dotted outline of an ordinary
portable wire stand for holding three eggs, which can be conveniently placed within A.
It is usual in boiling eggs to place them in cold water within A, and it is generally
understood that when the water is raised to boiling point the eggs are done and
should be removed, and by the adoption of my invention the cook or other attendant
may proceed with other duties, relying upon the infallibility of the signal before
described to notify that the contents of A is boiling or that the eggs are done.
may
I may as a modification of the method shewn by Fig. 1, arrange an exhaust D',
upon the outside of A, as shewn in Fig. 2, and either place a disc E, within A,
coinciding with the passage in D' so that the escaping steam may operate upon E,
and D', in the same manner as E D in Fig. 1. Or I may place within D¹ cross
bars, so that the steam may impinge upon them edgewise, or any other contrivance
that may give off a sonorous signal at the moment desired. Or D' may be arranged
near to, or upon the handle G, and I may arrange the rim of B shallow, as at C',
or deep as at C", with a vertical slot a, as shewn by dotted lines in Fig. 2, to leave
the internal opening of D, free to receive the steam generated. Or I may arrange the
deep rim C, to fit upon the outside instead of the inside of A if desired. Or I
arrange a vertical nozzle H, outside any part of B, as at Fig. 3, or any part of A,
or G, for the same purpose as D and D, with or without the internal disc E, and
slip, or screw thereon some mechanical contrivance that may be operated by the
escaping steam so as to give off a sonorous signal other than a whistle. In Fig. 5
I have shewn a contrivance that would be quite separate from the vessel and could
be placed upon D' or H at will, in which I is a hollow tube capable of being slid,
or screwed upon H or D', and carries externally a double or split_bracket J,
revolving within which is a wheel provided with any number of vanes K, upon the
ends of two or more of these are linked small knobs L. The tube I also carries a
bracket M, supporting a bell or its equivalent N. By this arrangement the steam
exhausting through H or D' or the like, and the tube I would impinge upon the
vanes K and give rapid motion to the wheel, causing the knobs L to strike the bell,
or its equivalent, N, and so give off a sonorous signal for the purposes before
mentioned.
Referring again to the method shewn by Fig. 1 I may in lieu of placing the
disc E within B as shewn, place it outside B in such a position that the holes D,
and F, may coincide as before, or I may indent B, either internally or externally
so as to form a concave dish, similar to E, and place a flat or dished disc thereon so
as to form a cavity or chamber similar to that made by E and B in Fig. 1.
1 may in certain cases when employing the method shown by Figs. 2 and 3 place
a disc É covering the internal orifice of D' or H or their equivalents, so that a
whistle would be sounded, with or without the contrivance shewn by Fig. 5, or other
device for the same purpose.
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
1st. In an improved saucepan or other vessel for giving off sonorous iguals when
the contents thereof have reached boiling point, the employment of a lid B, with
deep rim C, and provided with a hole D, und dished disc E. with hole F, combined
and operating substantially as and for the purposes herein described and shewn by
Fig. 1 of the appended drawings.
2nd. In an improved signal saucepan or other vessel the employment of a dished
disc E having a central hole F therein, in combination with a similar dished surface
within or without the lid B, having a central hole therein, for the purpose of giving

page_text: off a whistling sound by the escaping steam passing through the holes in each,
substantially as herein set forth.
3rd. In an improved sigual saucepan or other vessel the employment of an exhaust
nozzle D', or H, placed upon any part of B or A, or upon, or within G, with or
without the disc E, in combination with any suitable mechanical contrivance, such
as Fig. 5 or its equivalent, substantially as and for the purposes herein described
and shewn by Figs. 2, 3, and 5 of the accompanying drawings.
Dated this 26th day of August 1891.
GEO. THOS. HYDE,
4, Moorfields, Fore Street, London, E.C., Agent for the Applicant.