are Applied for Heating Gas Retorts and other Purposes.
Year: 1888

page_text: Date of Application, 6th Mar., 1888
Complete Specification Left, 6th Dec., 1888
Complete Specification Accepted, 29th Jan., 1889
are Applied for Heating Gas Retorts and other Purposes.
I, THOMAS BURTONSHAW of the Gas Works, Chipping Norton, in the County of
Oxford, Gas Works Manager, do bereby declare the nature of this invention to be
as follows:-
==
This invention has for its object in the first place the construction of tar burners,
whereby tar is supplied for the purpose of heating furnaces, and in the second place
in so constructing the furnaces as to adapt them for consuming the tar as supplied by
the said burners.
I make the tar burner as follows although other modes of making them may be
adopted. A piece of thin brass tube from twelve to eighteen inches long, more or less,
and about three eighths of an inch, more or less, in diameter is taken. This is pierced
on its sides, or circumference with a large number of small holes. One end of the
tube is closed by a screwed cap, while to the other end is screwed a piece of iron tube
about four or five inches long and of equal diameter, the extreme or outer end of
which is contracted. Into this end a little molten lead is run, and centrally through
the lead a fine hole is drilled, the said lead enabling this hole to be easily and quickly
made the necessary size either by rimering larger or burring up smaller. This hole
however must never be made quite so small as the holes in the brass tube. The
combined tube is then thrust through a reducing socket so that the four or five inches
of iron tube projects beyond the small part of it, and is fixed thereto by being screwed
or otherwise. That portion of the brass tube just described is inserted into an iron
tube of considerably larger diameter, with a thread on its end, onto which the reducing
socket is screwed. The large iron tube with its brass tube inside is then connected to
the tar delivery pipe which is furnished with a cock, the whole being hung so that
the nozzle stands in front of the frame of the furnace door, but is so arranged that it
may be turned up, or on one side while the retorts are being charged. The frame
has a hole in it so that tar flowing from the nozzle may be injected through the said
hole into the furnace. The furnace door has a number of holes about three quarters
Price R

page_text: of an inch in diameter drilled through it above the dead plate, and beneath it in the
ashpan cover there are two or more larger holes with covers so that the area of the
passages may be adjusted.
The furnace itself is adapted by either withdrawing the fire bars and substituting a
fire tile slightly inclined from the dead plate and reaching within eight or ten
inches of the back of the furnace, the which space is left open, or by leaving in the
fire bars and simply covering the same with fire tiles from their furthest end to within
twelve or fourteen inches of the dead plate, this latter space being also left open.
Where practicable a fire tile is also fixed above the furnace door and under the arch,
this tile being also inclined downwards.
The action of the apparatus is simple. Tar being supplied from a tank placed some
fourteen or sixteen feet above the floor level, and in a warm situation where the tar
may be kept at about 100° Faht., flows down the pipe and through the small holes in
the brass tube to the nozzle from which it is injected into the furnace by gravitation,
and there striking against the underside of the hot fire tile is formed into spray which
is immediately converted into gas, and consumed, thereby heating the furnace in a more
efficient and economical manner than is ordinarily the case. It will be seen that the
holes in the tube serve as a screen or filter for the tar, so that the hole in the nozzle
being closed by extraneous matter is reduced to a minimum, while from the construc-
tion of the burner it may be unscrewed, wiped, and replaced.
Where it is inconvenient to use an elevated tank, a force pump may be employed
to supply the tar, care being taken to maintain a sufficient pressure.
In the case of steam boiler and other furnaces, the tar is injected and caused to
impinge upon broken fire bricks and is thus converted into spray, and for the
purpose of supplying the tar in a sufficiently liquid condition an ignited gas jet may
be so placed as to heat any convenient part of the tube through which the tar flows.on
its way to the nozzle.
Dated this 6th 1
Ը ... 1 1000
W. H. BENNETT,
Agent for the Applicant.

page_text: Applied for Heating Gas Retorts and other Purposes.
I, THOMAS BURTONSHAW of the Gas Works, Chipping Norton, in the County of
Oxford, Gas Works Manager, do hereby declare the nature of this invention and in
what manner the saine is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention has for its object in the first place the construction of tar burners
whereby tar is supplied for the purpose of heating furnaces, and in the second place
in so constructing the furnaces, or the adaptation of existing furnaces as to fit them
for consuming the tar as supplied by the said burners.
In order that the invention may be easily understood drawings are attached hereto,
Fig. 1 being an elevation of part of the interior tube, with a small portion of the outer
extremity in section, and the outer tube and socket in section. Fig. 2 is a similar
view of a modification, in which the interior tube is placed at right angles to the
delivery tube, and shows a means for adjusting the size of the aperture from which
the tar is ejected. In the drawings only a portion of the brass tube is shown perforated,
but the perforations in the article itself extends from end to end or nearly so.
I make the tar burner as follows although other modes of making them may be
adopted. A piece of thin brass tube A from twelve to eighteen inches long, more or
less, and about three eighths of an inch, more or less, in diameter is taken. This is
pierced on its sides or circumference with a large number of small holes. One end
of the tube is closed by a cap B, while to the other end is screwed a piece of iron tube ('
about four or five inches long and of equal external diameter, the extreme or outer
end D of which is contracted. Into this end a little molten lead is run and centrally
through the lead a fine hole is drilled, the said lead enabling this hole to be easily and
quickly made the necessary size either by rimering larger or burring up smaller.
This hole however must never be made quite so small as the holes in the brass tube.
The combined tube is then thrust through a reducing socket E so that the four or
five inches of iron tube projects beyond the small part of it and is fixed thereto
by being screwed as shown, or otherwise. That portion of the brass tube just
described is inserted into an iron tube F of considerably larger diameter with a
thread on its end on to which the reducing socket is screwed. The large iron tube F
with its brass tube inside is then connected to the tar delivery pipe which is
furnished with a cock, the whole being hung so that the nozzle stands in front of the
frame of the furnace door, but is so arranged that it may be turned up or on one side
while the retorts are being charged. The frame has a hole in it, so that tar flowing
from the nozzle may be injected through the said hole into the furnace. The
furnace door has a number of holes about three quarters of an inch in diameter
drilled through it above the dead plate, and beneath it in the ash pan cover there
are two or more larger holes with covers so that the area of the passages may be
adjusted.

page_text: In the modification it will be seen that the socket E which receives one end of the
brass pipe is connected to a reducing T piece G by screwing as shown, and into the
latter is screwed the delivery pipe C. The extremity of this pipe C has a metal nipple H
screwed into it and through the centre of the nipple there is drilled a small hole. The
size of the aperture is regulated by thrusting forward or drawing backward the needle J
by means of the knob or handle K. The needle works through guides L and M with
asbestos packing N between them.
The furnace itself is adapted by leaving in the fire bars and simply covering the
same with fire tiles from their furthest end to within twelve or fourteen inches of the
dead plate, this later space being also left open.
The action of the apparatus is simple. Tar being supplied from a tank placed some
fourteen or sixteen feet above the furnace level, and in a warm situation where the tar
may be kept at about 100° Faht., flows down the pipe and through the small holes in
the brass tube to the nozzle from which it is injected into the furnace by gravitation,
and there striking against the ring of an arch, or the top or sides of the furnace is
formed into spray which is immediately converted into gas, and consumed, thereby
heating the furnace in a more efficient and economical manner than is ordinarily the
case. It will be seen that the holes in the tube serve as a screen or filter for the tar
so that the chance of the hole in the nozzle being closed by extraneous matter is
reduced to a minimum, while from the construction of the burner it may be easily
unscrewed, wiped, and replaced.
Where it is inconvenient to use an elevated tank a force pump may be employed to
supply the tar, care being taken to maintain a sufficient pressure.
In the case of a steam boiler and other furnaces the tar is injected and caused to
impinge upon broken fire bricks and is thus converted into spray, and for the purpose
of supplying the tar in a sufficiently liquid condition an ignited gas jet may be so
placed as to heat any convenient part of the tube through which the tar flows on its
way to the nozzle.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claini is,
1. The construction of tar burners as herein described and shown on the drawings.
2. The construction of new, or adaptation of existing furnaces as herein described,
so as to fit them for use with the tar burner hereinbefore described and shown on the
drawings.
Dated this 6th day of December 1888.