Improvements in Automatic Extinguishers for Lamps.
Year: 1888

page_text: Date of Application, 4th Sept., 1885.
Complete Specification Left, 15th May, 1889-Accepted, 15th June, 18891
PROVISIONAL SPECIFICATION.
Improvements in Automatic Extinguishers for Lamps.
I, ALFRED HENRY GRIFFITHS of Surrey Works, Smethwick near Birmingham in
the County of Warwick, Manager of Works, do hereby declare the nature of this
invention to be as follows:-
This invention relates to automatic extinguishing means commonly called extin-
guishers, whereby the light of a lamp is automatically extinguished, should the lamp
be accidentally overturned.
The means employed consist essentially of a weight, connected to, or secured at the
outer end of a flexible cord, chain or its equivalent, whose immer end is connected to an..
extinguisher arm outside the burner body.
In carrying out my invention, I will describe it in connection with an ordinary
duplex flat-wick burner, whose extinguishers are operated by an arm or lever, common.
to them both.
Directed outwardly from the bottom of the burner body part, and in about a line with the.
reservoir cup, I arrange an arm, elevated a short distance from the reservoir top, and
with its outer end dished into a concaved seat, wherein a weight for automatically
operating the extinguishers, seats itself. This weight which is preferably of a spherical
figure, and slightly coned on its underside, has a vertical hole through its middle,
wherethrough a flexible cord freely passes, and is therein connected, or prevented from
being drawn through by a bead or stop at its lower, or passed through end.. The
other or upper end is linked or connected to the arm of the extinguisher lever, whilst
the middle of the said cord passes through an eye or hole at the end of an outwardly
and downwardly directed bracket arm, which forms a guide, and compels the extin-
guisher to operate in whatever direction the lamp may be overturned.
The inward part of the arm which constitutes a rest for the weight, is formed with
a knife edge, to prevent the weight lodging or settling upon the side of the burner,
should the weight fall inwardly, on a lamp being overturned.
Normally the weight rests within its seat, with the cord upwardly extended, through
its guide, and with the lever raised.
The overturning of a lamp causes the weight by gravity to fall side-ways from its
seat, and pulls the cord with it, which thereby pulls the lever after it, and automatically.
operates the extinguishers.
When lever is down, the cord and its stop end passes through the open bottom of
the weight, and through a hole in the middle of the dished ended rest, and with,
the underside of the end of the lever resting upon the top side, and over the guide
arm..
The raising of the lever after extinguishing, automatically places the weight upon.
its rest.
Dated this Th
1000
ALFRED HENRY GRIFFITHS.
By Henry Skerrett;
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Automatic Extinguishers for Lamps.
I, ALFRED HENRY GRIFFITHS of Surrey Works, Smethwick near Birmingham in
the County of Warwick, Manager of Works, do hereby declare the nature of this.
Price 8d.1

page_text: 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 relates to automatic extinguishing means, commonly called extin-
guishers, whereby the light of a lamp is automatically extinguished, should the said
lamp be accidentally overturned.
The means employed consist essentially of a weight, connected to, or secured at,
the outer end of a flexible cord, chain or its equivalent, whose inner end is connected
to an extinguisher arm outside the burner body.
In carrying out my invention, I will describe it in connection with an ordinary
duplex flat wick burner, whose extinguishers are operated by an arm or lever, common
to them both.
Directed outwardly from the bottom of the burner body part, and in about a line
with the reservoir cap, I arrange an arm, elevated a short distance from the reservoir
top, and with its outer ends dished into a concaved seat, wherein a weight for auto-
matially operating the extinguishers, seats itself. This weight, which is preferably
of a spherical figure, and slightly coned on its underside, has a vertical hole through
its middle, wherethrough a flexible cord freely passes, and is therein connected, or
prevented from being drawn through by a head or stop at its lower, or passed-through
end. The other or upper end is linked or connected to the arm of the extinguisher
lever, whilst the middle of the said cord passes through an eye or hole at the end of
outwardly and downwardly directed bracket arm, which forms a guide, and compels
the' extinguisher to operate in whatever direction the lamp may be overturned.
The inward part of the arm which constitutes a rest for the weight, is formed with
a knife edge, to prevent the weight lodging or setting upon the side of the burner,
should the weight fall inwardly, on a lamp being overturned.
Normally, the weight rests within its seat, with the cord upwardly extending through
its guide, and with the lever raised.
The overturning of a lamp, causes the weight by gravity to fall sideways from
its seat, and pulls the cord with it, which thereby pulls the lever after it, and auto-
matically operates the extinguishers.
When lever is down, the cord and its stop end passes through the open bottom
of the weight, and through a hole in the middle of the dished ended rest, and with
the underside of the end of the lever resting upon the top side, and over the guide
armi.
The raising of the lever after extinguishing, automatically places the weight upon
its rest.
Figure 1 of the accompanying drawing, represents partly in elevation, and partly
in section, a table lamp, provided with safety extinguisher means, constructed and
arranged according to my said invention. The said figure exhibits the safety
arrangement in the position which it assumes when the lamp is in use, and the extin-
guishers out of action.
Figure 2 represents a like view as figure 1, but with the lamp shown tilted, or
over-turned, which removes the extinguishing weight from its cupped seat or rest, and
thereby operates the extinguishers.
Figure 3 represents an elevation of the burner part of the said lamp, but at right
angles to that of figure 1, and looking at the extinguisher means.
Figure 4 represents a like elevation as that of figure 3, but with the weight and
other accessory parts removed, for the purpose of exhibiting the jointing of the
extinguisher lever, also the web or knife edge at the shank of the rest or seat as
aforesaid.
Figure 5 shows a plan of the weight-rest, and the standing-up web, for preventing
the lodgement of the weight, on the same being displaced or turned aside.
The same letters. of reference indicate corresponding parts in the several figures.
is the burner part, the cone thereof, c the gallery, a² the body of the burner
part, a' the cap, and dis the oil container-e are the wick cases or tubes, respectively

page_text: embraced by spring extinguishers f₁f, whose lower inside parts f, f, are connected by
a cross bar 3, wherewith the fork g², of an extinguisher lever g, engages, and on the
said lever rocking or turning about its joint centre g³, the extinguishers fare raised
and lowered.
The end of the extinguisher lever has connected with it, a chain or flexible cord h,
whose lower end passes through the middle of an extinguisher weight i, which normally
seats itself within an open bottomed and cupped rest, disposed at the end of a
bracket, whose upper side is formed into, or has a web ³, for preventing the weight
lodging on the said bracket.
The extreme end of the chain, or flexible cord, has a stop or bead 2, which takes
its abutment upon the shoulder 13, of an enlargement hole it, and thereby prevents the
said chain or cord from being withdrawn, but allows its inner free movement; so that
the lowering of the lever's outer end, for ordinary extinguishing, allows the inner end
of the cord to pass through the hole in the extinguisher weight, and through the
pierced bottom of the rest.
The weight i, is conducted centrally to its rest, by the chain or flexible cord h
passing through an eye or guide k, made through the metal, near the end of an
outwardly directed bracket and guide arm k, whose middle is pierced with a gap,
wherethrough the extinguisher lever outwardly passes.
Thus, the overturning of a lamp, (accidentally or otherwise) causes the weight i, by
gravity, to fall or be displaced from its seat, when its gravitating effect pulls the cord,
and lowers the outer end of the extinguisher lever, which automatically operates the
extinguishers as represented in figure 2.
The raising of the lever after extinguishing, automatically draws upwards the
weight, which becomes righted or seats upon its cupped rest, as represented in
figure 1.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, 1 declare that what
I claim is
First Providing the extinguisher weight, of automatic and safety extinguisher
means, with an all-through hole, wherethrough the inner end of a flexible cord, or
chain, passes, and freely works, substantially as described and set forth.
Secondly Providing the shank or arm of the cup rest, of an extinguisher weight,
with upwardly directed webs, or their equivalents, whereby the lodgment of the said
weight, is prevented, as set forth.
Thirdly Directing and disposing above the extinguishing weight of an automatic
extinguisher lamp appliance, of a guide bracket, whose eye or guide-hole, comes
coincident with the hole within the weight, and the hole within the cup, substantially
as described and set forth.
:
Fourthly Piercing the middle of the cup of the cup rest, with a hole or gap,
wherethrough the inner and stop end of a flexible cord or chain, downwardly passes,
on the extinguisher lever being lowered for ordinary extinguishing, as set forth.
Lastly The combination with a lamp burner, or a lamp, with an extinguisher
lever as described, of a ball i, chain h, 2, cupped rest j, j³, j³, and guide k, k²; and
which said parts are constructed, arranged, and work, substantially as, and for the
purpose, as described and set forth.
Dated the First day of April 1889
ALFRED HENRY GRIFFITHS.
By Henry Skerrett,
Agent for Applicant.