Improvements in Furnace Lamps for Oil and Gas Engines.
Year: 1893

page_text: Date of Application, 10th Jan., 1893
Complete Specification Left, 21st Sept., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION
Improvements in Furnace Lamps for Oil and Gas Engines.
We, ALFRED SHUTTLEWORTH and FRANK SHUTTLEWORTH, both of the
Stamp End Works, Lincoln, Members of the Firm of Clayton & Shuttleworth,
Engineers, and WALTER HENRY TYRRELL and PERCY DEED, both of the same
address, Draughtsmen, in the employ of the said firm, do hereby declare the nature
of this invention to be as follows:-
This invention has reference to improvements in furnace lamps adapted to be
used in connection with oil and gas engines for igniting the charges. A lamp
according to this invention is constructed with a downdraught tube or funnel with
branches leading respectively to an enclosed space surrounding the upper part of
the wick and to a wick tube around which the wick is placed so that a down-
draught of air becomes divided and directed, as to part thereof, around the exterior
of, and as to the other part within, an annular wick and flame.
For the purpose of igniting the charge the lamp is furnished with a chimney
traversed by a straight tube adapted to be intensely heated by the flame of the
lamp.
In one convenient arrangement of lamp according to this invention a reservoir
has arranged above it a lamp mechanism having racks into which two pinions gear
these being arranged at opposite sides of the wick raiser and connected together or
not by other gearing in such manner that the wick can be evenly raised and.canibe
adjusted with nicety.
Within
The wick raiser has internal annular projections or lips which surround the wick
tube, the wick being placed between the said tube and the wick raiser.
the upper part of the wick tube is a flame spreader of inverted conical form adapted
to cause the air flowing up from the wick tube and that flowing up around the
outer side of the wick to mingle thereby producing an intense and steady flame.
Around the upper part of the wick tube is a nozzle piece that surrounds the wick.
A suitable perforated cone or casing encloses the said nozzle and the upper part
of the wick tube and surrounds the flame spreader leaving an annular space between:
the spreader and the edge or lip of the cone.
Surrounding the cone is an annular chamber into which air is conducted by a
suitable branch pipe from the down-draught pipe; a similar branch lower down
conducts air from the down-draught pipe into the lower end of the wick tube.
Dated this 10th day of January 1893.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Furnace Lamps for Oil and Gas Engines.
We, ALFRED SHUTTLEWORTH and FRANK SHUTTLEWORTH, both of the
Stamp End Works, Lincolu, Members of the Firm of Clayton & Shuttleworth,
Engineers, and WALTER HENRY TYRELL and PERCY DEED, both of the same
address, Draughtsmen, in the employ of the said firm, do hereby declare the nature

page_text: 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 reference to improvements in furnace lamps adapted to be
used in connection with oil and gas engines for igniting the charges.
A lamp according to this invention is constructed with a downdraught tube or
funnel with branches leading respectively to an enclosed annular space surrounding
the upper part of the wick and to a wick tube around which the wick is placed so
that a downdraught of air becomes divided and directed, as to part thereof,
around the exterior of, and as to the other part within, an annular wick and flame.
For the purpose of igniting the charge in an oil or gas engine, the lamp is
furnished with a chimney traversed by a straight tube adapted to be intensely
heated by the flame of the lamp, and into which a portion of the said charge enters
as well understood.
The accompanying drawings illustrate a convenient arrangement of lamp according
to this invention,
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•
Fig. 1 being a vertical section on the line a, a, of Fig. 2, and
Fig. 2 being a horizontal section on the line y y of Fig. 1.
A is a down-draught tube made of inverted conical or funnel shape and provided
with two branches B B' by which the draught of air produced in the said tubes
when the lamp is, burning, is divided into two streams. C is the oil reservoir
formed at the bottom with an air passage C¹ that is detachably connected with the
branch B of the down-draught tube by a screw threaded tube B2 and screw
coupling B³. At the top, the said reservoir is provided with a lamp mechanism
comprising a pinion D, gearing with a rack E on a wick raiser E' which is arranged!
to slide vertically in a guide piece D' in which the said pinion is mounted to turn.
This arrangement permits of the wick being raised and accurately adjusted. The
wick raiser is provided at the top with an internal annular row of projections or
teeth E with which the wick Fis. caused to engage by pressing it against them
when the wick raiser is removed, from the wick tube G, after which the wick
raiser is replaced so that the wick is located between it and the said tube. The
wick raiser is provided at the lower end with an annular inwardly projecting rib
that is made an easy fit over the wick and serves the double purpose of keeping
the wick in place and as an additional preventative against a spark or flame
reaching the oil reservoir. The lower end of the wick tube is screwed into the
inner end of the air passage C¹.
Within the upper part of the wick tube G is a flame spreader H supported by
arms H which rest on a turned ring G₁ inside the wick tube. This flame
spreader H which may be made hollow and of brass, is of inverted conical form
and is adapted to cause the air flowing up from the wick tube and that flowing
up around the outer side of the wick to mingle thereby producing an intense and
steady flame.
Around the upper part of the wick tube is a nozzle piece I that surrounds and
guides the wick. A suitable perforated cone or casing J encloses the said nozzle I
and the upper part of the wick tube G, and surrounds the flame spreader H, an
annular space K being left between the spreader and the edge or lip of the said
cone or casing J..
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Surrounding the casing J, and it may be formed in one therewith, as shown, is
an annular chamber L into which air is conducted by the branch pipe B from the.
down-draught pipe A, and from which annular chamber such air passes to the
exterior of the flame through' perforations L' formed all round the casing J excepting
opposite the branch pipe B. This branch pipe is connected to the chamber L by
nipple L² that is screwed into a socket L³ on the chamber L and into the conical
outer end of which the corresponding coned eud B of the branch pipe B is forced
when the other branch pipe B' is screwed up to the connecting tube B² by the screw
coupling B³. The lower branch B conducts air from the down-draught pipe A
.
a

page_text: into the lower end of the wick tube G, whence it passes up and escapes through
the annular space between the upper end of the wick tube and the inverted conical
flame spreader H.
M is the ignition tube of a gas or oil engine. It is closed at one end, and
screw-threaded at the other so that it can be readily connected to and disconnected
from a gas or oil engine. N is a combustion chamber serving also as a holder for
the tube M. This chamber, which forms the bottom of the chimney O and is made
removable from the chamber L for the purpose of easily lighting the lamp, is lined
with suitable non-conducting material, such as asbestos, as at P. It is also provided
at opposite sides with stuffing boxes Q which are packed with material such as
asbestos, and are formed on the inner side with taper or conical recesses R that act
as guides to aid in placing the ignition tube M, in position. The effect of the
entire arrangement is to concentrate the heat of the lamp flame on the centre of
the tube, and prevent undue loss of heat by radiation and conduction.
S is a
hollow screw plug formed with open branches S¹ so that it not only serves as a
plug to prevent dirt falling into the oil reservoir C through the charging aperture C²
into which it is screwed, but also as a ventilator, to enable the contents of the
reservoir to be kept cool.
By constructing the lamp with a down-draught tube such as A. with branches B B
arranged as described, it has been found that the air necessary to support combustion
is caused to enter the lamp with a velocity depending upon the heat of the flame
and the length of the chimney, and thus to act as a gentle blast. As a result an
efficient combustion of oil is obtained with the production of an intense, steady and
smokeless flame that is unaffected by passing draughts and which will continue to
burn, without attention, as long as the supply of oil continues.
With a lamp having a wick tube of about 1 inches external diameter, we have
heated the ignition tube M to a sufficient degree to ignite gas therein, when using a
chimney O of about 10 inches in height and 2 inches in diameter and a down-
draught tube A of about 13 inches in height above the branch B, and varying in
diameter from 2 inches at the top to about 1 inch at the bottom B', the branches B B¹
each having an internal diameter of about 1 inch.
The inverted conical flame spreader H also plays an important part in producing
the good result above referred to by directing the blast of air that ascends the wick
tube, in an outward direction so as to open the flame, while the blast of air that
enters the casing J tends to drive the flame inwards to a point the result being
that the two currents of air mingle in the flame, and thereby produce a clear hot
and steady flame, the heat of which is concentrated as far as possible upon the
central portion of the tube M.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. A furnace lamp for oil or gas engines, constructed with a down-draught tube
or funnel having branches leading respectively to an enclosed annular space
surrounding the upper part of the wick, and to a wick tube around which the wick
is placed, so that a down draught of air through the said tube or funnel will
become divided and directed as to part thereof around the exterior of, and as to
the other part, within, an annular wick and flame substantially as described and
shown for the purpose specified.
2. A furnace lamp for oil and gas engines, constructed with a down-draught tube
with branches arranged as described in the preceding claim, and with a flame
spreader H of inverted conical form arranged within the upper end of the wick
tube and adapted to cause the air flowing up from the wick tube to mingle with
that flowing up around the outer side of the wick and thereby produce an intense
and steady flame substantially as herein described.

page_text: 3. A furnace lamp for an oil or gas engine, constructed, and arranged substan-
tially as hereinbefore described and shown in the drawings annexed, and provided
with an ignition tube M as.set forth.
Dated this 20th day of Santambor 1803
ALFRED SHUTTLEWORTH.
FRANK SHUTTLEWORTH.
WALTER HENRY TYRRELL.
PERCY DEED.
W. Lloyd Wise,
46. Lincoln's Inn Fields, London, W.C., Agent for the Applicants.