Year: 1888

page_text: Date of Application, 23rd Feb., 1888
Specification Accepted, 29th Mar., 1888
We, THOMAS FLETCHER and ALFRED CLARE, both of Thynne Street, Warrington, in
the County of Lancaster, Manufacturers of Gas Apparatus, 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 :-
This Invention has for its object to increase the efficiency of Gas Fires by utilizing
the heat or a portion of the heat of the products of combustion. For the purpose of
this Invention the gas fire is provided with passages or channels and a hollow fender
through which the products of combustion from the fire pass on their way to the flue
or exit.
The products of combustion may be conducted into the hollow fender and from
thence to their exit by means of a divided or of a continuous passage or channel. If
a divided passage or duplicate set of passages are employed they are arranged in such
a manner that the waste gases descend on each side of the fire, thence to about the
middle of the fender where they are returned and ascend alongside each descending
passage to the flue where the two branches again unite. If a continuous passage is
employed, it is constructed and arranged so that the waste products descend on one
side of the fire, traverse the hollow fender and ascend on the other side of the fire to
the flue.
By this means a large radiating surface is secured in the external walls of the
passages and the exposed surface of the fender which are internally heated by the
waste gases from the gas fire.
The appended Drawings illustrate in what manner our Invention may be carried
into practical effect.
Fig. 1 is a front elevation.
Fig. 2 is a plan.
Fig. 3 is a vertical cross section.

page_text: The Drawings represent an arrangement of the divided or duplicate channels or
passages for the products of combustion, which is the arrangement we prefer to
employ. The fire and fender are represented as constructed without ornamentation
of any kind, but any degree of ornamentation may be employed. The fire is shown
also with an external casing on two sides and the top through which air may circulate
and become heated, although this casing may be altogether omitted.
A is the fire which may be of any kind in which gas is consumed; B is the external
casing; C is the hollow fender; D D' are the passages for conducting the heated
gases from the fire to the flue; E is the exit or flue nozzle; F F are air passages
within the casing; G indicates orifices through which the air enters the air passages
and H the orifices through which the heated air escapes. The parts F F G and H
may be omitted.
The heated gases from the fire follow the course indicated by the arrows in Figs. 4, 5
and 6, being divided into two portions, each of which descends upon one side of the
fire, enters the hollow fender, returns, and ascends alongside the descending passage
and finally escape by the exit.
When a continuous channel or passage is employed no passages are formed in the
hollow fender and the heated gases from the fire take the course indicated in Figs. 1
and 2, where the dotted lines show in what manner the passage is constructed for the
heated gases.
Having now, particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed; we declare that what
we claim is:-
In a gas fire, the combination and arrangement of a hollow fender and suitable
channels or passages for conducting the heated gases from the fire through the hollow
fender to the exit; substantially as herein before described and as illustrated by the
accompanying Drawings.
Dated this 18th day of February ÅD 1888
WILLIAM E. HEYS,
Agent for the Applicants.