Improvements relating to Oil Lamps.
Year: 1895

page_text: Date of Application, 8th Aug., 1895-Accepted, 14th Sept., 1895
COMPLETE SPECIFICATION.
Improvements relating to Oil Lamps.
I HARRY CHARLES PEIRSON of 63 Saint Paul's Road, Tottenham, in the
County of Middlesex, Salesman, 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 relates firstly to certain improvements in the means for
extinguishing oil lamps described in the Specification of my Patent No. 13446
of 1892 by which improvements I am enabled to simplify the construction of the
parts and thus to effect a saving in the cost of manufacture. Secondly the
invention relates to a device for raising the burner gallery in a rapid and safe
manner.
In the accompanying drawings
Fig. 1 is a partly sectional elevation of a duplex burner with my present
improved extinguishing device fitted thereto shewing the normal position of the
parts, and
Fig. 2 is a similar view shewing the position of the parts when the lamp is
overturned;
Fig. 3 is a vertical section shewing part of a duplex burner lamp with my
present extinguishing device fitted thereto.
Fig. 4 is an elevation of a duplex burner with my gallery raising device fitted
thereto, the gallery being shewn in the raised position.
The same letters of reference are used to denote similar parts in the first three
figures.
Referring firstly to Figs. 1 to 3 wherein is shewn my improved means for
extinguishing oil lamps. According to my present invention the upright piece C
carrying the extinguishing tubes A is operated by means of a lever G, and its
lower end fits into a cavity in the bolt D in the same manner as is described in the
Specification of my before mentioned Patent. The construction of the bolt D and
the means for releasing it so as to force the extinguishers over the wicks differs
substantially from the construction and mode of operation described in my prior
Patent Specification.
By my present invention the bolt D passes through a guide tube H secured to
the base L of the burner or to the reservoir and is pivotted at its lower end to
two links M M which are pivotted at m m¹ to two other links N N¹ those other
ends are pivotted at n n' to projections on the guide tube H or on the base L
of the burner. The upper end of the bolt D is provided with a flange or
collar D against the underside of which bears one end of a spiral or other
spring J which passes through the guide tube H and bears at its other end on
the base thereof. The tendency of the spring J therefore is to force the bolt D
upwards.
O is a weighted sleeve piece which slides freely over the exterior of the frame-
work M M N N', and causes said framework to partially close up in a vertical
direction. When the sleeve piece has fallen to the pivots mm² a stop (not
shewn in the drawings) on the linked framework M M' N N' will prevent it from
falling further; the weight of the sleeve piece is such that it will fall to, and
remain in, the position shewn in Figs. 1 & 3 whereby the framework M M' Ń N¹
is pressed together and the bolt D is held down against the pressure of the
spring J. Should the lamp be overturned, or tilted sufficiently, the sleeve piece o
D27

page_text: will slip over the upper links N N¹ towards the base Ĺ of the burner thereby
releasing the joints m m' of the framework M M' N N', when the spring J will
come into operation and will force the bolt D upwards thereby opening the jointed
framework M M N N', in a horizontal direction away from the bolt and causing
the extinguishers to close over the wicks. This is the position shewn in Fig. 2.
To reset the bolt the burner is placed in an upright position and the handle E of
the lever is raised thereby depressing the arm G and forcing down the bolt until
the jointed framework is so far closed up in a vertical direction that the sleeve
has slid down over the joints m m³.
In Fig. 3 I have shewn a modification wherein the jointed framework is carried
down to the bottom of the reservoir and works freely in the oil space between the
partitions P P which serve to prevent the wick from becoming entangled with the
mechanism. In this case to allow of the removal of the burner the tube H is not
fixed thereto, but is fixed to projections H¹ H' in the reservoir.
To adapt the extinguishing device to circular wick burners it is preferable to use
two concentric tubes arranged one on each side of the wick tube, and operated by
mechanism such as is herein before described.
My improved means for extinguishing is also adaptable to flat wick burners
which are extinguished by the turning over of an extinguishing device. The
modifications necessary for this as well as for adapting this part of my invention to
other forms of oil lamps will be understood by persons acquainted with the trade
without further explanation.
Referring now to Fig. 4 wherein is shewn the gallery raising device. Qis a
sliding rod notched on its under surface at 9 and pivotted at its upper end to one
of the legs R, secured on the underside of the gallery and working in guides S,
whereby the vertical movement of the gallery is ensured. In the rim T of the
burner body is a notch t with which the notch on the sliding rod Q engages when
the gallery has been sufficiently raised and by which the gallery is supported in the
raised position, as shewn in Fig. 4.
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 ;-
(1.) Means such as herein described for extinguishing oil lamps, consisting of a
spring bolt carrying the extinguishing device and working through a tube on the
burner base, or secured in the reservoir, a jointed framework connected to one
end of said bolt and a weighted sleeve piece sliding freely over said jointed
framework and closing it in a vertical direction against the action of the spring on
the bolt substantially as described and shewn in Figs. 1 to 3 of the accompanying
drawings.
(2.) Means such as herein described for raising the gallery of an oil lamp
burner, consisting of a notched sliding rod pivotted at one end to the frame
carrying the gallery and engaging a notch in the rim of the burner body
substantially as described with reference to Fig. 4 of the accompanying drawings.
(3.) The combination of the various parts forming my improvements relating to
oil lamps all arranged to operate substantially in the manner and for the purpose
hereinbefore set forth and illustrated in the accompanying drawings.
Dated this 8th day of August 1895.
F. W. Golby,
H. C. PEIRSON.
36, Chancery Lane, London, W.C., Patent Agent for the Applicant.