Improvements in Extinguishers for Hydro-carbon and other Oil Lamps.
Year: 1887

page_text: Date of Application, 14th Mar., 1887
Complete Left, 14th Dec., 1887
Complete Accepted, 10th Feb.. 1888
Improvements in Extinguishers for Hydro-carbon and other
Oil Lamps.
1. FRANCIS ROBERT BAKER of Snow Hill, Birmingham in the County of Warwick
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to the extinguishing of hydro-carbon and other oil lamps,
when by accident or otherwise, they may be overturned, and which may be also
operated at will; and has for its object the automatic effecting of this purpose by
means of a ring (or its equivalent) of metal sliding down an incline, and carrying
forward an extinguishing shutter case, having single or double shutters upon which
shutters are prominences which, as the shutter case advances come in contact with the
interior of the cone, and closes the shutters together, thus extinguishing the light, and
the operation of the mechanism by hand by means of an arm or projection,
standing out from the sliding shutter case to the outside of the lamp, accessible to
the hand.
The upper part of the dome, inside the body of the burner, is made of a truncated
cone shape and from this done rises the wick tube or tubes.
:
In some cases I further extend the incline of the truncated cone, up the side of the
wick tube or tubes, in order to give further travel of the gravitating ring along its
surface. 1 then provide a gravitating ring, which passes over the wick tube, and
rests upon the truncated cone of the dome.
Upon the wick tube or tubes, I now provide a sliding shutter case, the lower part
of which rests upon the loose gravitating ring, but prepared at its upper part to
receive two hinged shutters, which will meet together in the centre (when above the
wick tube) and thus cut off the supply of air to the flame, and causing it to be
immediately extinguished. These shutters upon the sliding case are caused to close
after the following manner; From the outside of the said shutters I provide a pro-
jection, which, as the sliding case is thrown forward by reason of the gravitating ring,
comes in contact with the interior inclined surface of the cone (or surface prepared)
and thus effectually closes the two shutters together across the top of the wick.

page_text: To manipulate the extinguisher by hand I provide an arm, extending from the
sliding shutter to the outside of the lamp, working in a slot provided in the shell of
the burner, which may be lifted up at will, extinguishing the flames when desired.
Upon the lamp being overturned the gravitating ring would slide down the
iruncated cone, and thus cause the shutter case to move forward and close the shutters
over the flame, by reason of the prominences upon them coming in contact with the
interior of the cone.
CHARLES T. POWELL,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Extinguishers for Hydro-carbon and other
Oil Lamps.
I, FRANCIS ROBERT BAKER of Gothic Chambers, Gothic Arcade, Snow Hill,
Birmingham in the County of Warwick, 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 :-
This invention has for its object improvements in extinguishers for paraffin and
other oil lamps and relates to a device which according to this invention will
automatically extinguish the flame when by accident or otherwise the lamp may have
become overturned. The device for effecting this is also capable of being actuated by
hand whereby the flame can be mechanically extinguished at will.
The improvements as applied to lamps with flat or other wicks consist in
surrounding the wick tube by a cage which on one or either side carries a shutter or
shutters hinged to the said cage at a suitable distance from the aforesaid wick tube so
that when the lamp is in its normal position the extinguishing shutter or shutters are
leaning against the upper part of the wick tube. The cage carrying these shutters is
free to slide along the wick aube so that on lifting the cage by a suitable handle
extending to the exterior of the burner frame the shutters will meet each other or a
single shutter will meet the opposite side thereby completely enclosing the wick and
The shutter or shutters are caused to
simultaneously extinguishing the light.
on the shutters, they may
permanently lean towards the wick by means of projections
be projections that extend from the shutters and engage with the base plate of the
cage, or the projections extending from the aforesaid shutters may be guided by the
inner surface of the dome frame, the base of which, is of a conical form so that
immediately the lamp may be overturned the said cover when so inverted will cause
the shutters to automatically close. As this is effected by gravity, in order to ensure
proper working it has been found advantageous to employ a disc or ring of metal of
any desired weight upon which the sliding cage rests, when the lamp is in its normal
position. This disc or ring may obviously be connected to the cage, but according to
the views in the accompanying drawings we have shewn the cage and the ring
separate so that when the lamp is mechanically extinguished the ring will remain in
its normal position, and only act when by accident the lamp may be overturned,
thereby exerting a force against the cage and causing the instantaneous extinguishing
of the light.
These improvements are adapted to the ordinary type of lamp and do not necessitate
any alteration in their construction.
I will now proceed to describe my invention with reference to the accompanying
drawings in which Figure 1 is a sectional elevation through an ordinary lamp shewing
the A and the shutters B in their normal position which position is ensured by
cage
the projections C and D. The cage A slides on the wick tube E and is free to be

page_text: raised by the lever F to the position shewn in Figure 2. Figure 3 is a perspective
view of the cage with its shutters, and Figure 4 is a section shewing the lamp partly
inverted. I will be clearly seen thai owing to the distance apart of the shutter
hinges, no guide is really necessary to cause the shutters to meet, but it is advisable
that an angle towards the wick should be ensured and this is effected by the lower
projection or leg D on either shutter. The upper projection C extending from the
shutters towards the immer surface of the cap H does not necessarily engage with the
aforesaid inner surface of the dome or cap . It may do so in cases where the angle
of the shutters is not sufficiently great as to cause them to meet each other auto-
matically but according to the views shewn in the drawings the projection C would
only engage with the inner surface of the dome H when the lamp is inverted and as
shewn in Figure 4.
In this latter Figure the ring or disc G is shewn engaging with the base of the
cage A as hereinbefore described.
According to other modifications of my said invention hereinafter referred to, the
essential features of these improvements render them applicable to circular or duplex
burners and in the accompanying drawings at Fig. 5 is a part sectional elevation of a
duplex burner, Fig. 6 being a plan thereof. Fig. 7 shews the burner inverted and
the shutters closed, but as before described the cage may be raised by the handle F.
In these figures I have only shewn one shutter B to each wick but there may be two
if necessary.
In the application of these improvements to the extinguishing of circular wick
burners find that the same means as herein before described will effectually
accomplish the object but with a longer travel of the shutters as will be seen by the
views Fig. 8, Fig. 9 and Fig. 10 which are respectively part sectional elevation,
plan and a view shewing the burner inverted with the shutters abutting and effectually
enclosing the wick.
The same letters of reference refer to like parts in all the figures.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. In extinguishing apparatus for paraffin or other oil lamps the cage A surrounding
and free to slide upon the wick tube whether flat or circular and provided with
hinged shutters B inclined to each other and operated by the handle Fas herein set
forth.
2. In extinguishing apparatus for paraffin or other oil lamps the cage A and the
shutters B provided with projections D for determining the angle of the shutters Bas
herein set forth.
3. In extinguishing apparatus for paraffin or other oil lamps the shuiters B
provided with projections and guided automatically by the dome or cover H in the
imanner and for the purpose herein set forth and illustrated more particularly with
reference to Fig. 4 of the accompanying drawings.
4. The general arrangement and construction of extinguishing apparatus consisting
of the cage A, shutters B projections C. D, handle F and gravity ring G as herein set
forth and illustrated with reference to the various figures.
Dated this 14th day of December 1887.
ABEL & IMRAY,
Agents for the Applicant.