Improvements in Fireplaces, Furnaces, and the like.
Year: 1888

page_text: Date of Application, 19th Jan., 1888'
Specification Accepted, 24th Feb., 1888
Improvements in Fireplaces, Furnaces, and the like.
I, FRIEDRICH AUGUST HERBERTZ, of Cologne on the Rhine, Germany, Manufac-
turer, 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 :-
Hitherto furnaces or fireplaces with grate surfaces of ordinary or known con-
structions, had, among others, the following disadvantages, namely, that the open
grating becomes easily choked up, a free draught being thereby impeded; the firebars
themselves are greatly exposed to combustion, and moreover small fuel falls through
the said bars and remains unburnt.
To obviate these disadvantages, according to my invention, I construct furnaces or
fireplaces wherein the usual grating is dispensed with, the surface for the combustion
of the fuel being formed by an adjustable fire plate, provided with so-called
"chamotte" lining or equivalent refractory material, and constructed in such manner
as to allow of adjustment of position, in order to increase, diminish, or close, air
openings as hereafter described.
And in order that my invention may be fully understood and readily carried into
effect I will describe same with reference to the accompanying drawings. Similar
letters of reference refer to like parts in all the figures.
Figure 1 is a transverse, and Figure 1ª is a longitudinal vertical section shewing
a combustion fire plate constructed and arranged according to my said invention and
as applied to a boiler furnace of horizontal type.
Figure 2 shews in vertical section, an application of the adjustable fire plate as
aforesaid, to the furnace of a boiler of vertical type.
Figure 3 shews in vertical section the application of the adjustable fire plate to a
stove or fireplace.
Referring more particularly to Figures 1 and 1ª, f is the fire plate with chamotte
or refractory material upon which the combustion takes place, and the surface of the
refractory material, or of the fire plate, may be either level or somewhat pyramidal or
conical or of other suitably shaped surface as circumstances may require.
The setting of the boiler extends from the surface of the fire plate f to the top of

page_text: the boiler, and may be supported as shewn by the plates c and the pillars d. The
plates c have at the side or edges, corner or angle pieces e which with the corners or
edges of the fire plate f form an aperture at g. The aperture 9 is also in communi-
cation with the atmosphere at front and back through the door frame / and the plate i
of firebridge k.
an
The fire plate thus forms in connection with the combustion chamber
aperture running all round through which the air for combustion passes in. The
size of this aperture 9 is capable of being regulated, as the fire plate f may by
suitable and convenient means be raised, lowered or shut.
In the accompanying drawing Figure 1ª the fire plate is made adjustable by
means of hinge joint and counterweight. If the combustion chamber is of great
breadth the fire plate ƒ may be divided or several times repeated as is shewn at
Figure 1. Between two such fire plates there is then provided a centre piece n con-
sisting of an inverted T shaped carrier cased with chamotte or refractory material and
this together with the fire plates again forms the apertures g.
Referring to Figure 2, the fire plate f together with the lower portion of the fire-
box (which is supported by the pillars 7) form a circular aperture which be
may
opened or closed at pleasure, and the position of the fire plate may be adjusted by a
rack carrier as shewn in the drawing.
Figure 3 shews an application of the fire plate to a stove or fireplace, the general
arrangement being similar to those herein before described excepting that the aperture g
is shewn inclined downwards instead of being horizontal and it is provided with an
extra screw adjustment.
The invention although only shewn in the accompanying drawings as applied to
steam boilers and to a stove or fireplace, may be applied to other heating apparatus.
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 :-
In furnaces, fireplaces, and the like, the solid fire plates f having a level, raised
or depressed surface of "Chamotto " or other refractory material, and forming
in combination with the walls of the combustion chamber, horizontal, rising or
descending, air apertures or passages, the said fire plates f being capable of being
raised, lowered, or closed, or otherwise adjusted substantially as herein described and
shewn with reference to the accompanying drawings together with any mere modifi-
cation or modifications thereof.
101
T
1000