AN IMPROVED APPARATUS FOR HEATING AND COOKING
Year: 1885

page_text: ABRAHAM MARTIN of 177 Aston Lane Birmingham in the County of Warwick
Engineer do bereby declare the nature of ny said invention for AN IMPROVED
APPARATUS FOR HEATING AND COOKING to be as follows:-
My invention relates to an improved apparatus for rapidly making tea and coffee
and for boiling water.
My invention consists of a vertical tubular boiler which by its form and con-
struction is susceptible of replacing an ordinary lamp chimney and is consequently
applicable to any ordinary oil lamp.
The construction of the apparatus is therefore very simple and inexpensive as no
special lamp is required and as the draught and combustion are in no way interfered
with neither odor nor smoke will be emitted,
The apparatus consists of a cylindrical or other shaped receptacle traversed by a
central metallic tube forming a chimney for the lamp and a heating surface for the
contents of the receptacle. This chimney varies in form according to the shape of
the flame (whether round or flat single or double) of the lamp to the burner of
which the apparatus is to be applied this chimney having exactly the same form &
dimensions as the glass chimney which it replaces. The said receptacle
open at
top & provided with a loose cover & is preferably jacketted with a bad conductor
of heat. The lower part of the chimney is of such a diameter that it will fit
outside of the chimney holder the receptacle being thus firmly seated on the gallery
of the lamp. The lower part of the chimney is formed in one with the bottom of
the receptacle the chimney itself being in two parts the upper cylindric part and
the lower throttled portion the former being fitted on and soldered to the latter.
The receptacle is furnished with a draw off cock and with a filtering chamber
for making infusions or decoctions. This chamber is of annular form to correspond
to the forin of the main receptacle and is provided with a perforated bottom and a
loose cover held in place by springs. These springs are attached to the central
tube of the filtering chamber which is fitted to slide upon the central Hue or
chimney of the apparatus and which is of sufficient length to project through the
cover of the latter and serve as a means of raising the filtering chamber when it's
contents have been sufficiently immersed.
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I ABRAHAM MARTIN of 177 Aston Lane, Birmingham in the County of Warwick,
Engineer do hereby declare the nature of the said invention for "AN IMPROVED
APPARATUS FOR HEATING AND COOKING 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 apparatus for making tea or coffee, boiling water etc
and consists of a vertical tubular heater which is adapted by its form and con-
struction to be applied to any ordinary oil lamp in place of the usual glass
chimney As the heater fulfils the purpose of the chimney, which it replaces, the
draught and combustion are in no way interfered with, so that neither ordor nor
smoke will be emitted and, as no special lamp is required the apparatus is
inexpensive and of simple construction.
Although the light is almost wholly obscured sufficient is emitted from the
top of the apparatus to serve the purpose of a night light when used in the sick
room.
Reference is to be had to the accompanying drawings forming part of this
specification wherein Figure 1 is a longitudinal vertical section of the apparatus as
applied to a lamp. Figure 2 a horizontal cross section of the same and Figure 3
is a vertical section of the lower part of the chimney and bottom of the receptacle
drawn to a larger scale.
The heater consists of a cylindrical or other shaped vessel a, traversed by a
central vertical metallic tube b rising from the bottom c of the heater through the
top cover thereof, and forming a chimney for the lamp and an internal heating
surface for the contents of the vessel This chimney b varies in form according to
the shape of the flame (whether round or flat, single or double) of the lamp to
which the heater is to be applied; this chimney having exactly the same form and
dimensions as the glass chimney which it replaces, the lower part b¹ of the chimney
being however of such a diameter that it will fit outside of the holder d within
which the glass chimney is usually held. The vessel is thus firmly seated on the
gallery of the lamp, as shown. The chimney is conveniently made in two parts,
the upper cylindrical part b and the lower portion b. The latter may be male of
sheet copper in one piece with the bottom c by stamping it up in dies or otherwise
and it is contracted at 62 in the same way that glass chimneys are usually throttled
for Argand burners. The upper part bis preferably a solid drawn tube, united to
the lower part by being slipped over the throttled portion 62 and soldered or brazed
thereto. In this way the proper internal form of the chimney is easily and cheaply
obtained.
The vessel a may be made of sheet metal and jacketted with felt or other bad
conductor of heat. It has a loose cover e and is furnished with a draw off cock at
bottom. A movable chamber f provided with a perforated or reticulated bottom
may be used for making infusions or decoctions. This filtering chamber is of
annular form corresponding to that of the vessel a, its central tube g fitting easily
upon the part b of the chimney, and resting on a rim / formed around the chimney b;
its tube g projects through the cover e so that it can be taken hold of for raising

page_text: the filtering chamber f when desired. The chamber f has a loose cover i which
may be held down by springs k attached to the tube g of the chamber. When the
filtering chamber is raised these springs engage over the inner edge of the cover e
retaining the filtering chamber in the raised position as represented in dotted lines
in Figure 1.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I hereby declare that
I make no general claim to the use of a heating or cooking vessel provided with
an internal tube and heated by a lamp or otherwise but what I claim is
1st The construction as hereinbefore described and shown of apparatus for
beating and cooking, consisting of a removable annular vessel adapted to be placed
on the gallery of a lamp and having an internal tube operating as the ordinary
chimney glass.
2nd In the apparatus referred to in the preceding claim, the construction of the
flue or chimney of two parts, of the form, and united in the manner herein described
and shown.
3rd In combination with the apparatus referred to in the preceding claims, the
movable filtering chamber herein described and shown.