Improvements in Ships' and other Portable Forges.
Year: 1897

page_text: Date of Application, 15th Sept., 1897
Complete Specification Left, 14th June, 1898-Accepted, 15th Sept., 1898
Improvements in Ships' and other Portable Forges.
GEORGE WALKER, 95, Leadenhall Street, London, E.C., Engineer, do hereby
declare the nature of this invention to be as follows:-
In portable forges for use on board ships and about establishments for the
construction of ships, machinery bridges and the like coal is used with air blast
produced by bellows or fans, & manipulated by manual power. The object of
my invention is to save the use of manual power, and free the compartments in⚫
which the forges are used from smoke emanating from the coal, and when
required increase the heat to beyond that now obtainable by coal, by adopting
liquid fuel such as paraffin or the like.
This I do by making a box of suitable area of thin iron or other material, pre-
ferably oblong in shape and having a loose cover, the inside of the box being
lined with fire bricks cemented together by fire clay or other substance, such fire
bricks to be dovetailed or grooved into each other or not, so as to prevent the flame
from passing through to the exterior of the box, or between the bricks and the
exterior of the box. An air space may be provided between the bricks and the
exterior of the box to prevent the radiation of heat, but this is not essential for
the purpose of the forge.
At the forward end of the box an opening is made with a conical or a straight
projection into which the liquid fuel is forced by means of a steam or air jet,
& which becomes ignited by placing a light inside the forge, and continues thus
so long as the supply of steam or oil lasts. At the opposite end of the box an
opening is made which can be covered by a funnel or chimney to carry away the
flame and fumes, while another opening is made at each side of the box covered
by sliding or hinged doors through which the materials to be heated are passed
into the interior of the box. Handles are made for the easy carrying of the forge
or box from one place to another.
A tank or receptacle containing the liquid. fuel is placed at some convenient
part, preferably on the top of the box and its contents conducted by means of a
pipe into an ordinary spray oil burner which is also connected by means of another
pipe to any convenient place containing steam of more than atmospheric pressure,
& which steam passes through the centre of the burner by means of a tube, the
oil flowing round the outside of the tube thus becoming heated and passing out
of the nozzle of the burner into the forge.
Improvements in Ships' and other Portable Forges.
I, GEORGE WALKER, of 95, Leadenhall Street, London, E.C., Engineer, do
hereby declare the nature of this invention and in what manner the same is to
[Price 8d.]

page_text: be performed, to be particularly described and ascertained in and by the follow-
ing statement:
―
In portable forges for use on board ship and about establishments, for the con-
struction of ship's machinery, bridges and the like, coal is used with air blast
produced by bellows or fan and manipulated by manual or mechanical power.
According to this invention I dispense with the use of coal by substituting
instead the use of liquid fuel such as paraffin, petroleum or the like. This I do by
making a box of suitable area, made of thin iron or other material, preferably
oblong in shape and having preferably a loose cover, the inside of the box being
lined with fire bricks F cemented, together by fire clay or other substance, such
fire bricks to be dovetailed or grooved into each other or not to prevent the flame
from passing through to the exterior of the box, or between the bricks and the
interior of the box. An air space may be provided between the bricks F, and the
box to prevent the radiation of heat but this is not essential for the purpose of
the forge.
At the end of the box an opening is made with a conical or straight projec-
tion G, into which the liquid fuel is forced by means of a steam or air jet H, and
which becomes ignited by placing a light inside the forge, and thus continues
ignited so long as the supply of liquid fuel and steam or air lasts. At the opposite
end of the box from the conical projection an opening is made which can be
covered by a funnel or chimney E, to carry away the flames and fumes, while one
or more openings are made at one or both sides of the box through which the
materials to be heated are passed into the interior, and which openings can be
covered by sliding or hinged doors A. Handles are attached to this forge for the
purpose of easier transport from one place to another.
A tank or receptacle C, for containing the liquid fuel is placed at some con-
venient part, preferably on the top of the forge, and its contents conducted by
means of a pipe I, into an ordinary spray oil burner B, which is also connected
by means of another pipe D, to any convenient place containing steam of more
than atmospheric pressure, and which steam passes through the centre of the spray
burner by means of a tube, the liquid fuel flowing round the outside of the steam
tube, thus becoming heated and passing out of the nozzle of the burner B, into the
forge. The quantity of steam and liquid fuel to be used can be regulated by
means of an ordinary shut-off-cock.
In the annexed drawing Fig. 1, is a plan, Fig. 2 an elevation, and Fig. 3 a
section of the forge..
Having now particularly described and ascertained the nature of my said inven-
tion and what manner the same is to be performed, I declare that what I
claim is:
(1). Ships and other forges using liquid fuel substantially as above described.
(2). Forges which by their use require no manual power and by their use emit
considerably less smoke or dirt than those forges employing coal.
(3). Forges which are capable for their size of supplying considerably greater
heat than that now obtained by coal.
(4). Forges which can be made cheaper, are less bulky and are less weight
than those now used.
Dated this 13th day of June 1898.