A NEW OR IMPROVED HEAT GENERATOR AND COAL • ECONOMISER ADAPTED FOR ALL PURPOSES OF DOMESTIC OR OTHER USE WHERE PROVISIONAL SPECIFICATION
Year: 1873

page_text: LETTERS PATENT to Samuel Bentley and Thomas Mullard, both of
Birmingham, in the County of Warwick, Manufacturers, for the
Invention of "A NEW OR IMPROVED HEAT GENERATOR AND COAL
•
ECONOMISER ADAPTED FOR ALL PURPOSES OF DOMESTIC OR OTHER USE WHERE
PROVISIONAL SPECIFICATION left by the said Samuel Bentley and
Thomas Mullard at the Office of the Commissioners of Patents,
with their Petition, on the 29th October 1873.
2
. We, SAMUEL BENTLEY and THOMAS MULLARD, both of Birmingham,
in the County of Warwick, Manufacturers, do hereby declare the nature
of our said Invention for "A NEW OR IMPROVED HEAT GENERATOR AND COAL
ECONOMISER ADAPTED FOR ALL PURPOSES OF DOMESTIC OR OTHER USE WHERE
FACILITIES FOR HEATING AND COOKING ARE REQUIRED," to be as follows (that is
to say) :-

page_text: the one side side and tap for hot water supply on the other, with brackets
for supporting additional plate or plates for resting articles to be warmed,
whilst the top proper forms a continuous hot plate for culinary purposes
with various shaped removable covers for the application of saucepans,
stewpans, and other cooking utensils; the front is fitted with bars and
may be enclosed with a door or otherwise.
Below the fire-grate sloping as it retires we form the bottom on which
the ashes fall and are conducted back so as to fall within the range of
the grate, or to a receptacle for receiving them.
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The side plates we purpose lining with thin fire-clay bricks or tiles set
in fire-clay, as also around the oven, and hot water holder to protect it
from the action where required of the keen draught of the fire. The
back of this apparatus is fitted with loops for attachment to the bars of an
ordinary kitchen or other grate when required for application to common
fire-places now in use, and is thereby made portable to be applied and
used at pleasure without reference to any particular fire-place; or the
apparatus may be so modelled and constructed for setting in fire-places
without the ordinary fire-grate; in both cases a short chimney is
provided with the apparatus for carrying the smoke from the fire to the
ordinary chimney stack. By these contrivances at moderate cost we
combine all the requisites for a small family, whether it be to radiate
heat and comfort, culinary purposes, or as an aid in preparing the water,
heating the irons, and drying the clothes for laundry purposes or
domestic and personal use; and the whole effected with the use of the
commonest dross of coal without the intolerable nuisance of the frequent
smoking common in open grates.
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SPECIFICATION in pursuance of the conditions of the Letters Patent,
.
filed by the said Samuel Bentley and Thomas Mullard in the Great.
Seal. Patent Office on the 29th April 1874.
191
2
TO ALL TO WHOM THESE PRESENTS SHALL COME, we; SAMUEL 3
BENTLEY and THOMAS MULLARD, both of Birmingham, in the County:
of Warwick, Manufacturers, send greeting.
"WHEREAS Her most: Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of October, in the

page_text: year of our Lord One thousand eight hundred and seventy-three, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Samuel Bentley and Thomas Mullard,
Her spécial licence that we, the said Samuel Bentley and Thomas
Mullard, our executors, administrators, and assigns, or such others as wo,
the said Samuel Bentley and Thomas Mullard, our executors, adminis
trators, and assigns, should at any time agree with and no others, from
time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use; excrcise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "A NEW OR IMPROVED HEAT
GENERATOR AND COAL ECONOMISER ADAPTED FOR ALL PURPOSES OF DOMESTIC OR
OTHER USE WHERE FACILITIES FOR HEATING AND COOKING ARE REQUIRED," upon
the condition (amongst others) that wc, the said Samuel Bentley and
Thomas Mullard, by an instrument in writing under our hand and
scal, should particularly describe and ascertain the nature of our said
Invention and in what manner the same is to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that we, the said Samuel Bentley and Thomas:
Mullard, do hereby declare the nature of our said Invention, and in
what manner the same is to be performed, to be particularly described:
and ascertained in and by the following statement (that is to say):—
"1
Our Invention consists in constructing a protruding fire-grate or
holder supported between metal plates at the sides, fitted with an oven,
door on the one side and tap for hot water supply on the other, with.
brackets for supporting additional plate or plates for resting articles to:
be warmed, whilst the top proper forms a continuous hot plate for
culinary purposes with various shaped removable covers according to
special or common requirements for the application of saucepans,
stewpans, and other cooking utensils; the front is fitted with bars and
may be enclosed with a door or otherwise.
. Below the fire-grate, sloping as it retires, we form the bottom on which
the ashes fall, and are conducted back so as to fall within the range of
the grate or to a receptacle for receiving them and facilitating their
separation and removal.

page_text: The side plates we purpose lining with thin fire-clay bricks or tiles set
in fire-clay, as also around the oven, and hot water holder to protect it
from the action where required of the keen draught of the fire. The back
of this apparatus we prefer adapting for heated air internally, and
externally with loops or otherwise for attachment to the bars of an
ordinary kitchen or other grate when required for application to common
fire-places now in use, and is thereby made portable to be applied and
used at pleasure and without reference to any particular fire-place; or
the apparatus may be so modelled and constructed for setting in fire-
places without the ordinary fire-grate; in both cases a short chimney is
provided with the apparatus for carrying the smoke from the fire to the
ordinary chimney stack. By these contrivances at moderate cost we
combine all the requisites for a small family, whether it be to radiate
heat and comfort, culinary purposes, or as an aid in preparing the water,
heating the sad irons, and drying the clothes for laundry purposes or
domestic and personal use, and the whole effected with the use of the
commonest dross of coal without the intolerable nuisance of the frequent
smoking common in open grates.
Notwithstanding the same apparatus is applicable for heating apart-
ments generally, as by fitting within the usual marble chimney piece a
suitable ornamental cast front our apparatus may be so cast, adapted, and
ornamented externally as to be in character with its surrounding fittings,
and being placed upon the hearth will be found safe, economic, and a
great heat generator.
But in order that we should be understood as to the nature and
character of our Invention we will proceed to describe the same from
the Drawings hereunto annexed, reference being made to the several
figures and letters marked thereon (that is to say) :-
Fig. 1 represents in perspective a view of our apparatus as adapted.
and arranged in the family kitchen or humbler family dwelling; in this
view the oven door is shewn but the tap for the supply of hot water is.
not seen from its being on the obscured side; the top of the apparatus.
is represented with one cover as convenient for supplying fuel as well as
the placing on of any culinary utensil requiring sharper heat than would
be derived from the top of the plate; other openings either circular or
otherwise may also be formed in the top for the same purpose; the
chimney or flue-way marked A is here represented of a rectangular

page_text: shape so as to distribute the draught way on the under side of the top
or plate, but this chimney or flue way may be round, tubular, or
otherwise as desired.
The manner of arranging the flue way may be carried into effect by
casting it in connection with the plate that forms the hobs or extended
shelf each side of the apparatus, the said shelf being also connected or
cast with the angle plate of the back through which the flue way is
continued, curving upwards as represented in a separate sectional part
at Fig. 2.
Fig. 3 represents a top irregular section of Figure 1, the metal
chimney as at Figure 2, with the horizontal plate B, and vertical angle
plate C, being broken off for the purpose of shewing the inner end of
the top of the apparatus or hot plate D, which is also broken off for the
purpose of shewing the oven E and hot water reservoir F, the door of
the former being open, marked G, while the tap for drawing off the hot
water is marked H; J, J, are fire-clay cheeks to protect the sides of the
fire-box from burning. The bottom and back of the fire-box is fitted
with open castings but which may be cast in one if preferred hereafter
to be referred to; K, K, is an iron pipe connected with the hot water
reservoir, by which means the water is principally heated; the front part
of the pipe may be placed on the bottom grate of the fire-box and
continued along at the back of the back grating, but if preferred the
front part of the pipe K may be placed underneath the grate bottom;
L is a large void space for the retention of hot air receiving the heat
through the openings at the back of the fire-box and exercising its
influence on the oven; M, M, is simply brickwork to fill up the void in
the chimney consequent on the advantages of placing our apparatus so
as to protrude beyond the usual face of the chimney piece, at the same
time leaving sufficient space between the brickwork to afford facilities
for sweeping the chimney when necessary, but which will likewise show
that our improved heating and cooking apparatus may be applied in the
front of grates now set.
Fig. 4 is a section from front to back of the apparatus, as shewn at
Figure 3, representing as at Figure 1 an open fire-place in the front
marked N and shewing the hot water pipe K, K, and hot air reservoir L
which extends around under the oven and up to L at the back end, the
open grate bottom and back being marked P and Q; beneath the fire

page_text: and running the whole depth of the apparatus is a drawer marked R for
receiving the ashes, and which may be fitted if desired with a sieve
by which the coarser particles of unburnt coal can be recovered and again
placed in the fire, the drawer being pulled out by the knob S and
emptied when necessary; the arrows indicate the flue way and the
chimney socket T we have represented round in this case merely to shew
that it can be so. when desired, and which shape is also represented at
Fig. 5, marked with the same letter T; the top or hot plate is shewn
rectangular in this view marked U, U, and the boiler applied on tho
left hand side marked V, V, and drawn merely to shew that for
common purposes and economy of construction the apparatus may be
so made and constructed, a front view of which is represented at Fig: 6,
marked with the same letters of reference..
As a general remark we will observe that we have strictly limited our
Drawings to the simple necessity of showing the general arrangement
and combination forming our Invention, and its adaptability for
generating heat with small consumption of coal, and the utilisation of
that heat for general and domestic purposes, that in the house of the
humble where means and space are limited heat is afforded, cooking
facilitated, the family baking provided for, and even the family washing
much aided, as by means of a pipe connected with the boiler and the
washing tub the water may be heated in considerable quantities and
kept hot, while thé subsequent process of drying and ironing would be
facilitated by the diffused heat afforded, and the top or hot plate provides
means for heating the sad irons as before stated.
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Although we have adhered strictly to economy and utility in tho
Drawings herein-before referred to and exhibited, nevertheless in the
hands of the practical founder the same facilities for heating may be
embodied in an ornamental rectangular stove, the space as occupied by
the boiler and oven being in this case made up of fire-clay brick from
its tendency to absorb heat; a stove thus constructed may be placed on
the hearth and retired or advanced at pleasure, and surrounded with a
cast-iron ornamental front filling up the space within the ordinary marble
chimney piece, thus shewing the general adaptabilities of our Invention
for various purposes as required.
Having now described the nature of our Invention and the manner in
which the same may be carried into effect, we claim as of our Invention
the general arrangement and combination as herein described and'

page_text: exhibited whether separate or combined, that is to say, the hot water
apparatus may be omitted or retained, or the oven may be omitted or
retained, or both omitted as herein-before stated, according to the purposes
where a regulated economic heat is desired without a smoke or dust.
In witness whereof, we, the said Samuel Bentley and Thomas
Mullard, have hereunto set our hands and seals, this Twenty-
eighth day of April, in the year of our Lord One thousand eight
hundred and seventy-four.
Witness,
FREDERICK COCKINGS,
Clerk to James S. Cockings,
Patent Agent,
Birmingham.
(L.S.)
SAMUEL BENTLEY.
THOMAS MULLARD. (L.s.)