Year: 1897

page_text: I, JOSEPH BURHARDT of Bolschaja Grusinskaja Moscow, in the Empire of Russia
Military Engineer, 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 :-
The outer casing for stoves, heaters, &c., and which forms the subject of the present
invention is composed substantially of thin cast iron, or it may be, even of stamped
plates, enamelled or not enamelled on their surface. It is illustrated in the
accompanying drawings, in which :-
Figure 1 is a side elevation of one arrangement.
Figure 2 is an inside view of one of the plates composing the stove casing,
whilst
Figure 3 is a side end view of the plate shown in Figure 2.
Figure 4 is a view of the plate looking at its top edge.
Figure 5 is a diagrammatic view of the stove plate shown in Figures 2-4.
Figures 6-8 illustrate the manner in which the several stove plates can be put
together to form the external shape of the stove.
a indicates the stove plate proper. The rear surface of each of these plates is
provided with fillets b which serve to cover the joints formed in putting together the
several plates, in such a manner as to prevent the gases generated in the stove from
penetrating outwards. The fillets may be so arranged as to extend along the entire
edge of the respective plate. In such a case then it is obvious that the adjacent
abutting edge of the next following plate shall not have a fillet. But the fillets are
preferably arranged in the manner shown in Figure 2, that is to say they extend only
along a portion of the length of the lateral edges of each plate. Then when the
plates are fitted together, the fillet situated for example on the right hand of
the underside of one plate will engage with the edge situated on the left hand of the
underside of the next following plate. Similarly the covering fi'let situated on the
left hand of the upper side of one plate engages with the right hand upper side edge
of the next following adjacent plate on the left. The covering of the horizontal
upper and lower edges of the plates may be effected in the same or in a similar
manner, as clearly shown in the Figure. For the purpose of mutually binding the
several plates firmly together, small lugs c may be employed which extend at right
angles from the fillets 6 and are provided with holes d through which screws, or it
may be several plies of binding wire, may be passed.
As is clearly shown in Figures 6-8 the plates herein described can be built
together to constitute any desired form of stove. In order to produce a stronger
union of the whole, the several plates a may be connected by means of wire or in any
other suitable manner with the inner masonry of the stove which constitutes the
heat-storing device proper. This wire may also be passed through holes d in the
connecting lugs c.

page_text: The stove plates herein described may obviously be formed externally in any
desired shape and with any desired pattern or design, or they may be quite smooth
enamelled or not enamelled.
In order to enable the advantages of the present improved stove casing to be
properly appreciated, the inventor makes the following comparison between ordinary
tiled stoves and the stoves constructed according to his invention:-In order to
produce a tight and well-looking joint when working with the ordinary tiles employed
for tiled stoves and heaters, the side edges of these tiles must be trimmed very
accurately, and this work which is comparatively slow, tends to very considerably
As the tiles are made of very
increase the cost of building a stove of that kind.
brittle clay, they are very liable to get damaged in being trimmed, so that they
cannot be used any more. Also since the cavities in the several tiles, and the spaces
left between the several tiles are filled with loam or mortar, there is a great liability,
with not very careful work, for cavities to be produced in the mass of the loam or even
between the latter and the tiles, which act as bad conductors of heat and thus may be
the cause of a want of uniformity in the heating of the external surface of the stove.
The tiles themselves, in consequence of being filled with loam, are rather thick, which
thickness is still further increased by the thickness of the inner layer of bricks in the
stove. Consequently the fall in temperature between the inner surface of the layer
of bricks, which is exposed to the direct action of the heating gases and the outside
surface of the tiles which serves to radiate the heat into the room, is very great, and
therefore the stove must be made comparatively large in order to produce the desired
radiation of heat into the room to be heated. The filling of the tiles with loam
renders the tiles relatively heavy, so that a very massive base is required to carry the
weight of tiled stoves. Now as compared with that striking drawback of tiled
stoves, the stove forming the subject of the present invention, possesses the following
advantages:-
The several metal stove plates can be very easily connected together. The work
progresses therefore very rapidly, and the cost of erection of the stove is consequently
small. There is no loss due to broken plates. As the metal plates are very good
conductors of heat, the heat given off by the gases to the brickwork, needs only to
traverse the said brickwork, apart from the thin iron plates, so that the temperature
of the outer surface of the stove that radiates the heat into the room to be heated,
is very much higher than is the case with tiled stoves, and consequently the whole
stove can be made smaller in proportion. This again results in a decrease in weight
which entails a lighter foundation for the stove. It may also be noted that any plates
that may have become damaged in the course of time can be re-enamelled and thus
be used again as new plates.
said
Having now particularly described and ascertained the nature of my
invention and in what manner the same is to be performed, I declare that what I
claim is
(1.) A casing for stoves and the like composed of thin cast or pressed enamelled or
not enamelled metal plates with or without ornament which are placed side by side
and upon one another in the manner required to produce the desired form of stove,
and which are provided on their inner sides with wide fillets b that serve to cover up
the joints between the plates, and also with small lugs c which serve to mutually bind
the several plates together.
(2.) Metal stove tiles as specified in Claim 1, in which the fillets 6 (that serve to
cover up the joints) extend only along one portion of the lateral length of the plates,
and are arranged in such a manner that always the fillets of one plate engage or
overlap that portion of the next adjacent and abutting plate which is not provided
with a fillet.
(3.) The attachment of the outer stove casing composed of plates of the kind
specified in Claim 1, by means of wire or in any other suitable manner with the
inner masonry of the stove acting as the heat-storer proper, for the purpose of
binding these said several parts of the stove into a firm and solid whole.

page_text: (4.) Stoves and the like constructed substantially as herein before described and
shown.
Dated this 22nd of May 1897.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Associate Agent.