An Improved Apparatus for Keeping Warm or Warming Plates, Dishes, Food, and the like, which Apparatus is also useful as a Refrigerator.
Year: 1892

page_text: Date of Application, 22nd June, 1892-Accepted, 23rd July, 1892
COMPLETE SPECIFICATIO.
An Improved Apparatus for Keeping Warm or Warming Plates,
Dishes, Food, and the like, which Apparatus is also useful as a
Refrigerator.
I, RICHARD WADE BOYD, of 105 New Bond Street, London, 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 a portable apparatus chiefly designed for keeping
warm or warming plates, dishes and food, which apparatus is also useful as a
refrigerator.
My improved apparatus, which is illustrated in vertical section in the accom-
panying drawing, comprises a metal chamber or oven (0) supported on four or any
other suitable number of legs (A) and surrounded by a hot air jacket (B) having
an aperture (B) in its underside. This jacket is in its turn covered or surrounded
by an outer casing (C) of wood or other suitable non-conducting material, and
also, if desired, by other non-conductors of heat placed between this casing and the
air jacket.
The heat is supplied to the hot air jacket by a spirit lamp (D) or other suitable
lamp or burner, below the said jacket.
The top of the non-conducting casing is preferably so arranged that it can be
readily lifted off, so that the top of the oven itself can be used as a hotplate after
the manner of the apparatus for warming plates described in the Specification of
former Letters Patent granted to me and dated 12th October A.D. 1886, No. 12966..
It is obvious, however, that the top of the said casing may, if desired, be firmly
secured in its place.
My improved apparatus is intended to be placed upon a table, sideboard or other
suitable support; and the said apparatus may, if desired, be made with a plate or
other suitable rest for the lamp.
The heated air and products of combustion from the lamp or burner, enter and
circulate by connection through the space between the jacket B and oven O, and
the loss of heat by radiation is prevented or greatly diminished by the non--
couducting casing or covering.
I find it advantageous to construct the apparatus as shown, so that the
aperture B serves both for the admission and for the escape of the heated air and
products of combustion. If desired, however, the apparatus may be provided with
a separate outlet for the heated air and products of combustion. The said
apparatus constructed with a door in front, which door is preferably hinged at
the top.
My improved apparatus can be adapted for use as a refrigerator at pleasure, by
simply omitting the lamp and putting a vessel containing a suitable quantity of
ice into the oven or chamber. I am thus enabled to utilize the non-conducting
jacket for the purpose of both summer and winter use.
I sometimes make the apparatus with removable legs so that, when it is to be
used as a refrigerator, the legs may be taken off and the bottom of the air-jacket B.
allowed to rest on the table or other support. The circulation of air through the
aperture B will thus be prevented.
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:-
The improved apparatus comprising the oven or chamber, the air-jacket and the-

page_text: non-conducting casing or covering, substantially as hereinbefore described and for
the purposes specified.
Dated this 22nd day of June 1802
RICHARD WADE BOYD.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C., Agents for the Applicant.