Improvements in Hydrocarbon Lamps.
Year: 1891

page_text: Date of Application, 6th June, 1891
Complete Specification Left, 14th Jan, 1892-Accepted, 20th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Hydrocarbon Lamps.
I, SAMUEL ALBERT JOHNSON, of 3 Montague Place, Poplar, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
The invention relates to improvements in self-extinguishing hydrocarbon lamps.
For this purpose I nount on the burner tube, a short sliding tube, either flat or round
as required, and I hinge to one or to both sides of the sliding tube, a flap or cover,
which, when the sliding tube is in its lowered position, fits against the side of the
tube, but which, when the sliding tube is raised, is acted upon by a spring to cause
it to close over the top of the wick tube, which, when of a flat form, will be
covered by a single flap, and when of a circular form, will be covered by two flaps
meeting together at the centre line.
A lever is connected to the sliding tube, and to the outer end of such lever is
attached a cord or chain which passes through an inclined tube fixed in the reser-
voir, and which tube open at top and bottom, the inclination of said tube being
such as to lead the cord or chain to a central guide hole formed in a bar fixed to
the base of the lamp; the cord or chain is passed through such guide and is
attached to a weight, which, when the lamp is in use, is seated on a central seat or
cup, but which, when the lamp is upset, falls off such seat or cup and, by means of
the cord or chain, acts upon the lever to raise the sliding tube and thereby extinguish
the flame.
The raising of the lever, whilst uncovering the wick tube, also at the same time
raises the weight, and causes it to become seated on its seat or cup.
S. A. JOHNSON.
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Hydrocarbon Lamps.
I, SAMUEL ALBERT JOHNSON, of 3 Montague Place Poplar in the County of
Middlesex, Engineer, 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 :-
The invention relates to improvements in self extinguishing hydrocarbon lamps.
For this purpose I mount on the burner tube a short sliding tube, either flat or
round as required and I hinge to one or to both sides of the sliding tube a flap or
cover which when the sliding tube is in its lowered position fits against the side of
the tube but which when the sliding tube is raised is acted upon by a spring to
cause it to close over the top of the wick tube which when of a flat form will be
covered by a single flap and when of a circular form will be covered by two flaps
meeting together at the centre line.
A lever is connected to the sliding tube and to the outer end of such lever is
attached a cord or chain which passes through an inclined or curved tube fixed in
the reservoir and which tube is open at top and bottom, the inclination of said tube
being such as to lead the cord or chain to the centre of the bottom of the reser-
voir, or in the case of glass reservoirs such cord or chain may pass outside of
the same.

page_text: The lower end of the cord or chain is attached to a weight which when the
lamp is in use is seated on a central seat or cup in the base but which when the
lamp is upset falls off such seat or cup and by means of the cord or chain acts upon
the lever to raise the sliding tube and thereby extinguish the flame.,
I
The raising of the lever whilst uncovering the wick tube also at the same time
raises the weight and causes it to become seated on its seat or cup.
And in order that my said invention may be more clearly understood and readily
carried into effect will proceed aided by the accompanying drawings more fully to
describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a vertical section of a duplex lamp with my improvements applied
thereto.
Figure 2 is a sectional view of parts drawn at right angles to Figure 1.
Figures 3 and 4 are elevations drawn at right angles to each other of a circular
wick holder and extinguisher to which my invention can be applied and
Figure 5 represents my invention applied to a lamp having a glass reservoir.
With reference to Figures 1 and 2 is the reservoir of the lamp, is its base,
c, c are the ordinary wick tubes which are fixed in the bottom d of the burner
fitting. e, e are tubes fixed to the under side of the plate or bottom which
receive the ordinary wicks f. f. and additional fixed capillary wicks ffffare
other capillary or syphon wicks placed in syphon tubes f3f3 attached to the
tubes e. e these wicks hang over the tops of the tubes and extend nearly to
the bottom of the reservoir a.
The bottoms of the tubes e. e, are enclosed within a small chamber e' so as
to allow of the free passage of oil to the various, wicks.
The chamber e is closed against the oil in the reservoir a except so far as such
is introduced therein by the capillary attraction of the wicks f
The above parts were included in a former Patent granted to me I therefore
lay no claim thereto in the present application.
9.9
Ordinary extinguishers are employed consisting of sliding tubes
mounted on
the wick tubes c. aml flaps or covers g¹g hinged to the tubes g. 9 and acted upon
by springs ggg is a cross bar connecting such extinguishers. is the ordinary
extinguishing lever which is fulcrummed at /'. Instead however of operating such
lever as heretofore by hand or by a weight attached thereto and carried above
the reservoir I according to my invention attach to such lever a cord or chain
which passes through a tube fixed in the reservoir and which is open at top and
bottom the direction of such tube being such as to lead the cord or chain out at
the centre of the bottom of the reservoir a, the cord or chain is then attached to a
weight which when the lamp is in use is seated on a central seat or cup but
which when the lamp is upset fall off such seat or cup and by means of the cord or
chain acts upon the lever to raise the sliding extinguishers g. 9 and thereby
extinguish the flame.
l
fit
The raising of the outer end of the lever h lowers the extinguishers g. thereby
incovering the wick tubes c. c and at the same time raises the weight & and causes
it to become seated on its seat or cup 1. I prefer to form the seat or cup as a
cylinder attached to a cross bar and in order that the extinguishing apparatus
may be rendered more sensitive when the lamp is in a room with children
such seat with a disc fixed to the top of a screw so that by raising such disc
the weight may be raised above the edge of the tube and thereby rendered so
sensitive that a slight inclination of the lamp will cause it to fall off the seat and
thereby extinguish the lamp.
At Figures 3 & 4 I have shown how
wick tube.
g is a short sliding tube, g
gare springs which act to close the
wick tube when the lever has raised the
my
invention may be applied to a circular
g are flaps or covers hinged thereto and
said covers or flaps over the top of the
sliding tube y to a level with the top of

page_text: the wick tube. is the cord or chain which connects the lever with a weight k
arranged as shown in Figure 1.
By my invention I am enabled to use a heavier and therefore more effective
weight than when carried above the reservoir in addition to which obtain a
neatness of appearance not hitherto obtained in lamps fitted with extinguishing
levers projecting from the body of the burner and operated by weights above the
reservoir.
The
In cases where it is desired to apply my invention to lamps having glass reser-
voirs surround the reservoir a as shown at Figure 5 with a metal cup or casing a
perforated or otherwise ornamented and leaving a free space between the two.
upper and lower part of the cup or casing is lined with cork ather yielding
material a to protect the glass reservoir and it is fitted internally with a short
length of tube which extends upwards and preferably follows very nearly the
contour of the glass reservoir and terminates at a suitable point to allow the chain
or cord i from the extinguishing lever freely to enter the same and to pass between
the glass reservoir a and the metal cup or casing a which latter has fixed at its
lower part a short tube extending into the lamp base and terminating at the
vertical axis of the lamp.
The chain is fitted at its lower end with a weight
support and operate the extinguisher as above described.
which can rest on a central
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
In safety hydrocarbon lamps the connection with the extinguisher lever h of a chain
or cord i passing through a tube fixed in and passing through the lamp reservoir a
and open at top and bottom or passing between a glass reservoir and the metal
casing, a weight & attached to the lower end of said chain or cord and a seat
for the weight at the centre of the lamp base substantially as herein shown and
described.
Dated this 14th January 1892.