Improvements in Lamps for Burning Hydrocarbon Oils.
Year: 1895

page_text: Date of Application, 5th Jan., 1895-Accepted, 23rd Feb., 1895
COMPLETE SPECIFICATION.
Improvements in Lamps for Burning Hydrocarbon Oils.
I, WILLIAM JOHN JONES of 144 Cemetery Road, Trealaw, Rhondda Valley,
in the County of Glamorgan Plumber 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 :-
My invention relates to improvements in that type of hydrocarbon oil lamps
known as "central draught," or internally ventilated lamps, and is designed with a
view to provide a perfect and more reliable means for effectually extinguishing
these after use, than obtains with such lamps as hitherto made and used.
In order that my invention and the manner of its operation may be fully
understood reference is herein made to the accompanying sheet of drawings in
which :-
Fig. 1 is an elevation of a burner of a lamp, of the type to which my invention
refers.
Figs. 2 and 3 are vertical sections of such a lamp arranged to be suspended by
chains or the like, and, illustrating the manner in which my invention operates for
the purposes stated, and as hereinafter explained.
Fig. 4 is a like section of a similar lamp, but arranged to be fixed to a pedestal,
for table use.
In lamps of the type referred to, the cotton A is of cylindrical form, arranged
to slide vertically outside a fixed tube B, open to the atmosphere at both its upper
and lower ends, by and through which the draught or ventilation necessary for
combustion passes.
Within the said tube B, a second but smaller and fixed tube C
is provided, usually held in position by cross stays D or their equivalents, connected
to or biting the tube B, and within the upper end of the tube is usually screwed
or otherwise fixed, the stem E of a flame deflecting table F which in combination
with the central draught through B causes the Hame to assume a bulbous or
spherical form as shewn in Fig. 1.
According to my invention, I provide a further vertical tube G, capable of
sliding freely within the tube C, and extending from the upper end or burner of
the lamp downward and through the bottom end or lower surface of the well or oil
reservoir H of the same, at which point the said tube G may or may not be solid,
and is provided with an external. screw thread J, while the upper end of the said
tube G is arranged to receive and hold the stem E of the flame deflecting table F
before referred to.
Within the tube B I provide a suitable and preferably spiral spring K,
surrounding the tube G, the upper end of which abuts against a shoulder or its
equivalent L formed upon or fixed to the said tube G, while its lower end rests
upon a cross stay M, or its equivalent, at the lower end of the tube B, the tension
of said spring always operating to keep the shoulder L in its highest position, which
for convenience may then be abutting against the under surface of the lower cross
stay D, or when this may not be placed in a position suitable to form an abuttinent
for L, a projection, stud or swelling may be fixed upon the tube B for that.
purpose.
In so far as relates to hanging lamps as illustrated by Figs. 2 and 3, I screv
upon the threaded portion J of the tube G, a suitable finger hold N, but in the
case of table lamps having a threaded portion O or its equivalent, by which it may
be screwed into or otherwise connected to a suitable pedestal, I screw upon the
lower end J of the tube G thereof a metallic piece, having a pair of arms P. and P",

page_text: extending outwardly therefrom through the usual ventilating slits R, at the bottom
of the well or reservoir H, the said arms being bent or curved to form holds for
the two first fingers of the hand. It will thus be understood that by adjusting the
finger holds N (in the case of Figs. 2 and 3) or the fingers hold P and P¹ (in
the case of Fig. 4), the height at which the table F stands above the top of
the cotton A, may be regulated so as to alter the bulbous or spherical formation
of the flame at will. The manner of operation is as follows:-
In so far as relates to hanging lamps, Fig. 2 shows the position of my improve-
ments when the lamp is in use, as at Fig. 1, and when this is to be extinguished,
the cotton would be turned down by the handle S until the wick had receded
within, and become level with, the top of the tube B in the usual way, when, by a
smart downward pull upon the finger hold N, the table F would be seated upon
the top or smouldering end of the cotton A, closing the upper mouth of the draught
aperture tube C. as at Fig. 3, and the lamp be thus immediately extinguished, and
upon release of the hold upon N, the table F would be again raised as at Fig. 2 by
the tension of the spring K, ready for lighting the lamp again when needed. The
same operation would be carried out when the table lamp Fig. 4 is to be
extinguished, by a pull upon the arms P P¹, the second position of these, and the
table F, being shown by dotted outline in the same figure.
It will therefore be understood that my improvements are not only applicable in
the construction of new lamps of this type, but by a very slight modification is
equally adaptable to lamps as at present made and used.
Having now particularly described and ascertained the nature of any said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In the manufacture and modification of lamps of the type known as central
draught lamps, the herein described method and means of mounting the flame
deflecting table, that this may also serve for extinguishing the lamp, substantially
as herein set forth and shewn by the accompanying drawings.
2nd. In the manufacture or modification of hanging lamps of the type known as
central draught lamps, the application thereto of a tube G, arranged to slide
vertically within the usual tube C, and carrying at its upper end the stem E of a
flame deflecting table F, its lower end being provided with a suitable and preferably
spiral spring K, enclosed within the usual draught passage tube B, the said tube G
having at its lowest extremity a threaded portion J, carrying a finger hold N, the
whole connected, combined and operating substantially as and for the purposes
herein described and shewn by Figs. 1, 2 and 3 of the appended drawings.
3rd. In the manufacture or modification of table lamps of the type known as
central draught lamps, the application thereto of a tube G, arranged to slide
vertically within the usual tube C, and carrying at its upper end the stem E of a
flame deflecting table F, its lower end being provided with a suitable and preferably
spiral spring K, enclosed within the usual draught passage tube B, the said tube G
having at its lower extremity a threaded portion J, carrying a metallic portion
having arms or finger holds P. P extending outwardly through ventilating slits K
the whole connected, combined and operating substantially as and for the purposes
herein described and shewn by Figs. 1 and 4 of the accompanying drawings.
Dated this 5th day of January 1895.
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.