Improvements in Mechanism for Extinguishing Lamps.
Year: 1892

page_text: Date of Application, 29th July, 1892
Complete Specification Left, 9th Mar., 1893-Accepted, 22nd Apr. 1893
PROVISIONAL SPECIFICATION.
Improvements in Mechanism for Extinguishing Lamps.
1 ALBERT CHARLES JONES, trading as Messenger and Sons of Broad Street
Birmingham in the County of Warwick Manufacturer do hereby declare the nature
of this invention to be as follows:-
My invention has reference principally to lamps burning light or volatile oils,
but is also applicable to lamps burning fixed or heavy oils and has for its object to
automatically extinguish the flame of the lamp in case the lamp should be over-
turned. The said mechanism may be also employed for extinguishing the lamp
when its light is no longer wanted.
My invention consists of improvements in an invention for which Letters Patent
were granted to Edgar Harrison dated 21st August 1890, No. 13144 of which
Patent I am the proprietor.
I will describe my invention in connection with the duplex burner of a lamp.
The extinguishers are of the ordinary kind and are carried by a light vertical
rod between the burners pressed upwards by a coiled spring. The extinguishers
are depressed by means of a lever turning on a pin on the perforated body of the
burner, the inner or acting end of which lever is forked, the upper branch of the
fork being on the top of the rod carrying the extinguishers. When the outer end
of the said lever is raised the inner end depresses the rod carrying the extin-
guishers which rod is temporarily retained in its depressed position by a horizontal
bolt taking into a slot in the said rod. This rod is urged forward by means of a
weighted lever turning on a pin on the perforated body of the burner the said
weighted lever being opposite the extinguisher lever. The said weighted lever is
cranked the arm carrying the weight being horizontal; the other or short arm
being vertical. The lower end of the vertical arm is jointed to the horizontal
bolt which when at liberty to move is pressed inwards by the weighted lever and
made to engage in the slot in the extinguisher rod when the said rod is so far
depressed as to bring its slot opposite the end of the said bolt. The end of the
bolt is inclined and the spring of the extinguisher rod pressing the said rod upwards
the bottom of the slot in the rod bearing against the inclined end of the bolt tends
to force the said bolt back but the weight of the weighted lever when in its
normal position more than counterbalances the pressure of the spring and the
extinguishers are maintained in their depressed position.
When the outer end of the extinguisher lever is raised the rod carrying the
extinguishers is depressed and the extinguishers are removed from off the wicks
and retained in their depressed position by the bolt described. When by accident
or otherwise the lamp is inclined the effect of gravity on the weight is diminished
in consequence of the virtual shortening by its inclination of the lever carrying
the weight.
The pressure of the spring being constant is now no longer counterbalanced by
the virtually diminished weight and the bolt is forced back, the extinguishers are
raised by the spring and the lamp extinguished. The flaps of the extinguishers
are turned over the wicks to extinguish the flames when the rod carrying them is
raised in the following manner. Between the extinguishers and jointed to them is
a light forked lever the ends of which bear on the arms of the said flaps. When
the extinguisher lever rises, the lower arm of its forked inner end presses upwards
the short arm of the light forked lever, and depressing the forked lever, its arms

page_text: press down the arms.of the extinguisher flaps and bringing the said flaps over the
wicks extinguish the flames.
1045
W. T. WHITEMAN,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Mechanism for Extinguishing Lamps.
ALBERT CHARLES JONES, trading as Messenger and Sons of Broad Street
Birmingham in the County of Warwick Manufacturer do hereby declare the nature
of my invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
My invention has reference principally to lamps burning light or volatile oils,
but is also applicable to lamps burning fixed or heavy oils and has for its object to
automatically extinguish the flame of the lamp in case the lamp should be over-
turned. The said mechanism may be also employed for extinguishing the lamp
when its light is no longer wanted.
My invention consists of improvements in an invention for which Letters Patent
were granted to Edgar Harrison dated 21st August 1890 No. 13144 of which
Patent am the proprietor.
I will describe my invention in connection with the duplex burner of a lamp.
The extinguishers are of the ordinary kind and are carried by a light vertical
rod between the burners pressed upwards by a coiled spring. The extinguishers
are depressed by means of a lever turning on a pin on the perforated body of the
burner, the inner or acting end of which lever is forked, the upper branch of the
fork being on the top of the rod carrying the extinguishers. When the outer end
of the said lever is raised the inner end depresses the rod carrying the extinguishers
which rod is temporarily retained in its depressed position by a horizontal bolt
taking into a slot in the said rod. This rod is urged forward by means of a
weighted lever turning on a pin on the perforated body of the burner, the said
weighted lever being opposite the extinguisher lever. The said weighted lever is
cranked the arm carrying the weight being borizontal; the other or short arm being
vertical. The lower end of the vertical arm is jointed to the horizontal bolt which
when at liberty to move is pressed inwards by the weighted lever and made to engage
in the slot in the extinguisher rod when the said rod is so far depressed as to bring
its slot opposite the end of the said bolt. The end of the bolt is inclined and the
spring of the extinguisher rod pressing the said rod upwards the bottom of the slot
in the rod bearing against the inclined end of the bolt tends to force the said bolt
back but the weight of the weighted lever, when in its normal position more than
counterbalances the pressure of the spring and the extinguishers are maintained in
their depressed position. When the outer end of the extinguisher lever is raised
the rod carrying the extinguishers is depressed and the extinguishers are removed
from off the wicks and retained in their depressed position by the bolt described.
When by accident or otherwise the lamp is inclined the effect of gravity on the
weight is diminished in consequence of the virtual shortening by its inclination of
the lever carrying the weight. The pressure of the spring being constant is now
no longer counterbalanced by the virtually diminished weight and the bolt is forced
back, the extinguishers are raised by the spring and the lamp extinguished.
The flaps of the extinguishers are turned over the wicks to extinguish the flames
when the rod carrying them is raised in the following manner. Between the
extinguishers and jointed to them is a light forked lever the ends of which bear on
the arms of the said flaps. When the extinguisher lever rises the lower arm of its
forked inner end presses upwards the short arm of the light forked lever, and
depressing the forked lever its arms press down the arms of the extinguisher flaps
and bringing the said flaps over the wicks extinguish the flames

page_text: I will now proceed to describe with reference to the accompanying drawings the
manner in which my invention is to be performed.
Figures 1 and 2 represent in vertical section (partly in elevation) taken in planes
at right angles to one another and Figure 3 represents in plan, the duplex burner of
an oil lamp to which automatic and hand worked extinguishing mechanisms con-
structed according to my invention are applied, the said Figures 1 and 2 representing
the automatic extinguishing mechanism set for use;
Figure 4 represents the same view as Figure 1 after the automatic extinguishing
mechanism has been brought into operation by the tilting or inclining or over-
turning of the lamp ;
Figure 5 represents the extinguishers and light vertical rod to which they are
affixed detached from the burner;
Figure 6 represents in side elevation and Figure 7 in plan, the weighted lever and'
horizontal bolt of the automatic extinguishing mechanism detached.
The same letters of reference indicate the same parts in the several figures of
the drawings.
a, a² a, a² are the extinguishers sliding on the wick cases b, b, the jointed side
flaps of the said extinguishers, which are turned over the wicks to extinguish the
flames when the said extinguishers are raised, being marked a², a².
To
Between the
extinguishers and projecting below them is a light vertical flat rod or slide
the greater part of which when the extinguishing mechanism is set, is situated in
the tubular case d, the said rod or slide being pressed upwards by the coiled spring e
in the said case d. The extinguishers a, a² are depressed to uncover the wicks to
set the automatic extinguishing mechanism by means of the hand lever ff, the
forked inner arm 2 of which embraces the stud or uncut away part of the sliding
rod c.
The said inner forked arm also serves when the sliding rod c is raised to
operate the jointed flaps a² of the extinguishers as hereinafter described; i is the
cranked weighted lever of the automatic extinguishing mechanism, turning on the
centre and situated nearly opposite the hand extinguisher lever
the lower end of the vertical arm of the cranked weighted lever i the horizontal
bolt is jointed, the said bolt being urged inwards when at liberty to move by
the said weighted lever. The inner end of the bolt k is inclined and when the
sliding rod c carrying the extinguishers has been sufficiently depressed, the said
inclined end takes into the slot in the said bar and holds down the said bar; the
bottom of the slot is inclined. The coiled spring e of the extinguisher rod e
presses the said rod upwards and the inclined bottom of the slot bearing against
the inclined end of the bolt tends to force the said bolt back, but the weight of
the weighted lever i, when in the normal position represented in Figures
and 2,
more than counterbalances the pressure of the spring e and hence the extinguishers
are maintained in their depressed position. When the bolt k is withdrawn or
pushed back as represented in Figure 4, the rod c is raised by its spring e and
the extinguishers a, a²; a, a² raised upon the wick cases and closed upon the wicks.
In order to set the automatic extinguishing mechanism for use the outer arm f of
the hand extinguisher lever f, f is raised; the rod c carrying the extinguishers is
thereby depressed and the coiled spring e compressed, the extinguishers being
removed from off the wicks. When the rod is so far depressed as to bring its
slot opposite the inclined end of the bolt (the said bolt being in the position
represented in Figure 4) the said bolt is made to engage with the said slot by the
action of the weighted lever i and the bar c and the extinguishers a, a²; a, u² are
retained in their depressed positions as represented in Figures 1 and 2.
C
When the lamp is inclined or tilted or overturned as represented in Figure 4,
the effect of gravity on the weight of the weighted lever i is diminished in conse-
quence of the virtual shortening by its inclination of the lever carrying the weight
and as the pressure of the spring e is constant, it is now no longer counterbalanced
by the virtually diminished weight and the bolt is forced back by the inclined
bottom of the slot acting against the inclined end of the said bolt.
The rod c
being thus released is raised by the spring e and the extinguishers carried by

page_text: the said rod made to cover the wicks and extinguish the flames, the several parts
occupying the respective positions represented in Figure 4.
The flaps a², a of the extinguishers are turned over the wicks to extinguish the
flames, when the rod e carrying them is raised either by the automatic mechanism
or by the action of the hand lever in the following manner.
Between the extinguishers and jointed to them at m² m² is a light forked lever m
(see Figure 3) the upper branches of which are situated over the tails or arms a³, a³
of the jointed flaps a², a. When the forked inner arm of the extinguisher
lever rises the lower branch of its forked end acting upon the short middle
arm of the forked light lever m turns the said lever on its centres m², m² and
causes its forked upper arms to bear upon and depress the tails a³, a³ of the
extinguisher flaps a², a and thereby bring the said flaps over the wicks and
extinguish the flames as will be understood by an examination of Figures 1, 3 and 4.
In order that the automatic extinguishing mechanism shall not be interfered with
when the extinguishers are raised by hand for extinguishing the lamp as well as
to facilitate the extinguishing by hand, the spring slide or sliding rod which is
fastened in its depressed position and released by the horizontal bolt of the
weighted lever may be modified in the manner illustrated in Figures 8, 9, 10, 11
and 12 of the drawings; Figures 8 and 9 representing vertical sections taken at
right angles to one another of a duplex burner containing the modified mechanism,
the extinguishers being represented in their depressed positions and the automatic
extinguishing mechanism set for use; Figure 10 representing the same view as
Figure 8 after the lamp has been tilted or overturned and the automatic mechanism
brought into action for extinguishing the flames, and Figures 11 and 12 representing
detached parts of the mechanism.
Instead of using a long slide or sliding bar or rod attached to the extinguishers
as before described, I use a short slide or slotted bar or rod n attached to the
extinguishers a, a²; a, a². With this short slide or sliding barn the hand extinguisher
lever, engages for lifting and depressing the extinguishers. The extinguishers
and short slotted bar or rod attached to them are represented in Figure 11. The
bottom of the bar is provided with a foot or expanded base. Sliding freely in
the case d and supported by the coiled spring e is a detached tube p used in place
of the prolonged part of the sliding bar hereinbefore described. With the detached
tube the horizontal bolt of the weighted lever i engages the said bolt taking
into a hole in the said tube and also taking into a holes in the case d (see
Figures 8 and 10). The tube is also slotted at opposite the hole 9 to enable
the said tube to slide upon the horizontal bolt k, the bevilled end of which protrudes
into the said tube. On lifting the hand extinguisher lever, its forked inner
arın depresses the short barn and with it the extinguishers a, a²; a, a². As
the short barn descends its foot or base bearing upon the top of the loose tube p
depresses that tube in the case d and compresses the coiled spring e and when the
hole
in the said tube comes opposite the inclined end of the horizontal bolt & the
said bolt is pushed inwards or advanced by the action of the weighted lever i and
engaging in the hole 9, the said tube is held down and the automatic extinguishing
mechanism set for use. When the automatic extinguishing mechanism is so set the
flames of the lamp may be extinguished by hand by depressing the extinguisher
lever without interfering with the automatic extinguishing mechanism. That is
to say, when the extinguisher lever is depressed by hand, the forked arm 2, lifts
the short barn and extinguishers a, a²; a, a, leaving the tube p held down by the
bolt of the weighted lever i, the said bolt being pushed back on the tilting of the
lamp as illustrated in Figure 10 so as to bring the automatic extinguishing
mechanism into operation as herein before particularly explained.
Having now particularly described and ascertained the nature of my invention
and the manner in which the same is to be performed I declare that I claim as
my invention of "Improvements in mechanism for extinguishing lamps" ;-
Firstly
The arrangement or combination of parts herein before described and

page_text: illustrated in Figures 1, 2, 3, 4, 5, 6 and 7 of the accompanying drawings for
automatically extinguishing the flame or flames of the lamp in case the lamp should
be overturned; that is to say, the combination with the spring slide or sliding bar
or rod c of the weighted cranked lever i and horizontal bolt k, the said bolt on the
depression of the slide or sliding bar or rod engaging with and holding down the
said slide or sliding bar or rod and the extinguishers carried by it and the said bolt
on the tilting or overturning of the lamp being automatically disengaged from the
slide or bar or rod for releasing it and the extinguishers for extinguishing the lamp
substantially as described and illustrated.
Secondly-The modified arrangement of parts hereinbefore described and
illustrated in Figures 8, 9, 10, 11 and 12 of the accompanying drawings for auto-
matically extinguishing the flame or flames of the lamp in case the lamp should be
overturned; that is to say, the combination with the short slide or sliding bar or
rod
in which the hand extinguisher lever engages and the loose or detached spring
supported tube p, q, r of the combined weighted crank lever and horizontal bolt k
for the purpose and substantially as described and illustrated.
Thirdly-The combination with the forked hand extinguisher lever of the lamp
of the light forked lever m jointed to the extinguishers, for turning the jointed
flaps of the extinguishers over the wicks to extinguish the flames when the slide
or bar or rod carrying the extinguishers is raised substantially as hereinbefore
described and illustrated in Figures 1, 3, 8 and 10 of the accompanying drawings.
Dated the Twenty-seventh day of February 1893.
ALBERT CHARLES JONES.