A New or Improved Cooking Utensil or General Heating Apparatus.
Year: 1893

page_text: Date of Application, 30th Oct., 1893
Complete Specification Left, 28th Nov., 1893-Accepted, 13th Jan., 1894
PROVISIONAL SPECIFICATION.
A New or Improved Cooking Utensil or General Heating
Apparatus.
I, JOHN BAYLY MAYCOCK, of 8, Middleton Road, Clapham Junction, in the
County of Surrey, Caterer, &c., do hereby declare the nature of this invention to be
as follows:
This is an invention of improvement in the construction of an inexpensive economic
cooking utensil or apparatus for general use particularly where speed in the
preparation of food, or the heating, or boiling of water or other liquids, or where
the economisation of heat, or fuel, is required or is necessary.
I make a stewpan, or pot, or kettle or other utensil or apparatus usually used for
boiling, heating, or cooking, either of iron or steel or tin
or copper or other
material usually used in the manufacture of such articles in the form in which it is
the custom to fashion the same respectively and in addition 1 affix thereto an
outer casing, forming a vacuum chamber without bottom made of the like metal
or other material either plain or coated or lined surrounding the whole or part of
the outer side or sides thereof commencing at the top or such lower part as may be
desirable and continuing downwards to a distance slightly below the bottom thereof
so that the stewpan, or pot, or kettle or other utensil is enclosed at the side or sides
either wholly or in part in an outer hollow case or chamber the width and depth
whereof is to vary according to the size of the utensil and the rapidity with which
the same is required to operate. I ventilate and regulate the heat of such chamber
by affixing an ordinary ventilator on the outer side thereof if required.
;
The operation of the invention is to prevent the escape or waste of the heat from
the flame or substance by or through or by means of which the same is produced
or generated and to confine and retain it within the before described chamber and
distribute it equally over the side or sides of the utensil within the same.
Dated this 30th dov of October 1802
A. SHEFFIELD,
2, Tavistock Street, Covent Garden, London, W.C., Agent.
COMPLETE SPECIFICATION.
A New or Improved Cooking Utensil or General Heating
Apparatus.
I, JOHN BAYLY MAYCOCK, of No. 8, Middleton Road, Clapham Junction, in
the County of Surrey, Caterer, &c., 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, reference being had to the
drawings hereunto annexed and to the letters marked thereon that is to say:―
The object of my invention is to manufacture a rapidly operating inexpensive
and economic cooking utensil or apparatus by the addition to every description of
utensil now ordinarily used of an outer casing or chamber which can be either
permanently fixed thereto or constructed to take on or off at pleasure and in the
latter case to be suitable either for one utensil only or for those of different sizes
but similar in shape as hereinafter more fully described.
Figure 1 represents the section of an ordinary tea kettle with the casing fixed
thereto forming an outer vacuum chamber (A) without bottom, having perforations
14.7 ممنوع

page_text: or ventilators on the outer surface thereof near the top, for the purpose of creating
or regulating the draught; this casing is made of such a length as to slightly
overlap or come below the bottom of the utensil, the space between the utensil and
the outer casing is varied according to the size or bulk of the utensil and the
degree of rapidity in operation required.
暮
The
Figure 2 represents an ordinary saucepan with the casing fitted thereto.
points """""" represent the position of the perforations or ventilators.
Figure 3 represents the casing suitable for one utensil only, which is made to fit
to any size or shape and which can be taken on or off as may be desired, but in the
manufacture of this it is advisable (but not absolutely necessary) to fit on the inside
near the bottom a metal rod or three or more short narrow pieces of metal for the
utensil to rest upon, by the adoption of this additional precaution the utensil is
properly adjusted inside the casing and unnecessary strain upon the top thereof
avoided.
Figure 4 represents the casing adapted for use on two or more utensils of similar
shape. It is constructed of any stout pliable metal and is made with an over-
lapping flange ("") which is fixed to the required size by clamps or nuts or
screws ("d""""
d") to the under side sothat it can be extended or contracted
as required.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be used, I declare that what I
claim in respect thereof is
1. An improved cooking utensil with a fixed outer casing or vacuum chamber as
described herein.
2. A loose or moveable casing or general heating apparatus for fitting to cooking
utensils to form an outer vacuum chamber thereto as herein before described
constituting the aforesaid improvement.
3. The right to manufacture and use the same.
1000
DOLL
November,
1000
2534.
A. SHEFFIELD,
2, Tavistock Street, Covent Garden, London, W.C., Agent.