Improvements in Lamps Applicable for the Burning of Paraffin Oil.
Year: 1888

page_text: Date of Application, 16th May, 1888
Complete Specification Left, 31st Aug., 1888
Complete Specification Accepted, 12th Oct., 1888
Improvements in Lamps Applicable for the Burning of
Paraffin Oil.
I, JOHN CROWLEY, of 33, Prescot Street, in the City of Liverpool, Chandler, do
hereby declare the nature of this invention to be as follows:-
This invention is designed to prevent the explosions so frequent in lamps and enable
the same to burn with very much greater regularity and economise the oil.
I have found that if the oil has entirely unimpeded flow to the wick, it mounts the
wick too fast and burns into a kind of carbon on the top of the wick.
-
In order to avoid this, I place a regulator in the lamp of the following type
Immediately below, resting on the base-plate of the reservoir into which the lamp
burner is screwed, I place the flange of a pendant tube. This tube reaches almost
exactly to the bottom of the vessel and is closed at the bottom, but one or more very
fine perforations are made in the side near the bottom. This tube is round, in order
that the wick when the burner is screwed on shall be able to freely turn in it, and the
wick is preferably made only just the length to reach to the bottom of the tube.
The tube resting on the base-plate allows any gases that form on the surface of the
oil to rise up to the burner. The hole at the bottom of the tube regulates the supply
of oil to the lamp, and the lamp has actually to draw the oil through the hole.
I have found that by this means the reservoir is kept very much cooler than would
otherwise be the case, so that little or no gas is generated even with very explosive
oil, and what little gas is generated is allowed to rise to the flame through the mere
crack between the flange of the tube and the flange of the base-plate on which it resis.
The flame however cannot pass this crack. It is therefore a safety lamp.
Furthermore the oil being regulated in its ascent to the wick, the wick is not quite
so saturated with oil as it otherwise would be, consequently it is more easily blown out,
and if the lamp be upset it consequently usually goes out.
It is exceedingly desirable that when a lamp is once trimmed to the right height,

page_text: children should not be able to raise it up. I therefore employ two pins entering the
sides near the ends or the ends of the wick tube and exactly fitting the holes in which
they are placed, or those holes can be made deeper by a little piece being soldered on
each side into which the holes are drilled. When the wick is turned to the right
height these pins are shoved in and having either heads or their equivalent standing
outside the wick-tube, when the gallery and dome are pressed down these prevent the
pins from coming out. The result is that when children or other unauthorised persons
try to turn the regulator handle, they find they cannot do it.
Dated il 15th
1000
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Patent Agents for the Applicant.

page_text: Improvements in Lamps Applicable for the Burning of
Paraffin Oil.
I, JOHN CROWLEY of 33 Prescot Street in the City of Liverpool, County of
Lancaster Chandler, 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 is designed to prevent the explosions so frequent in lamps and
enable the same to burn with very much greater regularity and economise the oil.
I have found that if the oil has an entirely unimpeded flow to the wick, it
mounts the wick too fast and burns into a kind of carbon on the top of the wick.
In order to avoid this, I place a regulator in the lamp.
The drawings set forth three slightly different modes of carrying my invention.
into effect, in these :-
.
Figure 1 is a transverse vertical section of a portion of a lamp burner and
adjacent parts with my improved device attached thereto.
Figure 2 is a horizontal section of same looking upward.
Figure 3 is a vertical section of a lamp showing a slightly modified form of
my invention.
Figure 4 is a plan of part of same with the hood removed.
Figure 5 is a vertical section of a lamp shewing a modification of my invention.
Referring first to Figures 1 and 2:
A, is a pendent tube of any convenient shape in cross section. It may rest by
means of a flange on the base plate C (Figure 3) of the reservoir D, into which
the lamp burner D¹ is screwed, or on the bottom of the said oil reservoir D, or
it may be supported by one or more flanges B on the base of the burner D'.
This tube A, reaches almost or quite to the bottom of the vessel, D, and is closed
at the bottom, but one or more very fine perforations E are made in the side
near the bottom. When the tube A rests upon the base C of the reservoir, it is
made round, in order that the wick, when the burner is screwed on, shall be able
to freely turn in it, and the wick is, preferably, made only just the length to
reach the bottom of the tube. When the tube is attached to the burner (or to
the wick) it is made preferably of the same shape as the wick and rather larger
than it. The tube A rests loosely on its supporting flanges so as to allow any
gases that form on the surface of the oil, to rise up to the burner through the
interstices e Fig. 3. The hole or holes E at the bottom of the tube regulate the
supply of oil to the lamp, and the wick has actually to draw the oil through the
holes.
Figures 3 and 4 show a modification which can be applied to existing lamps,
and in which the tube A' is supported on, and pinned to the wick by pin G.

page_text: I have found that by this means, the reservoir is kept very much cooler than
would otherwise be the case, so that little or no gas is generated even with very
explosive oil, and what little gas is generated is allowed to rise to the flame
through the vent hole e between the flange of the tube and the flange of the base
of the burner. The flame, however, cannot pass this vent hole it is, therefore, a
safety lamp.
Furthermore, the oil being regulated in its ascent to the wick, the wick is not
quite so saturated with oil as it otherwise would be, consequently it is more easily
blown out, and if the lamp be upset, it consequently goes out.
It is exceedingly desirable that when a lamp is once trimmed to the right
height, children should not be able to raise it up. I, therefore, employ two pins H,
Figures 3 and 4, entering the sides near the end, or the ends, of the wick
tube and exactly fitting the holes in which they are placed, or those holes can be
made deeper by a little piece being soldered on each side, into which the holes
are drilled. When the wick is turned to the right height these pins are shoved
in, and having either heads or their equivalent standing outside the wick-tube,
when the gallery and dome are pressed down, these prevent the pins from coming
out. The result is that when children or other unauthorised persons try to turn
the regulator handle, they find they cannot do it.
Figure 5 shews a modification in which the pendent tube or vessel A² (instead
of being supported on the wick as shewn in Figure 3) is supported on the shoulder J,
and can very readily be removed when the lamp burner D' is unscrewed. The
tube or vessel A2 is closed at the bottom, but one or more very fine perforations E
are provided. A plug K may be employed for filling the oil reservoir, having a
hole or perforation for admitting air, or allowing superfluous air or gas to
escape.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, I declare that what I claim is :—
1. The combination with a lamp applicable for the burning of paraffin oil, of a
tube A or A¹ or A" separating the wick from the main body of the reservoir,
and connected with the latter by one or more comparatively minute holes only,
substantially as and for the purposes described.
2. The arrangement for locking the wick in place, which consists of two or
more pins passing through well fitting holes in the wick tube into the wick, and
prevented from being withdrawn when the dome is in place by their projecting
heads coming in contact with the said dome.
Datel this 50th
1000