An Improvement in Spirit Lamps.
Year: 1891

page_text: Date of Application, 4th July, 1891
Complete Specification Left, 31st Oct., 1891-Accepted, 5th Dec., 1891
PROVISIONAL SPECIFICATION.
An Improvement in Spirit Lamps.
I, STEPHEN WALTER ABBOTT of Southall, in the County of Middlesex,
Manufacturer do hereby declare the nature of this invention to be as follows:-
My invention relates to spirit lamps and has for its object to prevent the cap or
cover coming off and the spirit being spilled should the lamp happen to be
overturned, and also to prevent evaporation of the spirit when the lamp is not
in use.
The invention consists in providing a packing consisting of an india-rubber ring
fitting closely around the neck of the bottle or body of the lamp and around which
packing the extinguisher cap or cover closely fits so as to make a tight joint between
the cap or cover and the neck of the lamp.
A flange lip or other means may be provided for retaining the ring securely in its
place so as to admit of the cap or cover being readily put on or taken off without
displacing the packing ring.
Dated th
I 1
1001
S. W. ABBOTT,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
An Improvement in Spirit Lamps.
I, STEPHEN WALTER ABBOTT of Southall, in the County of Middlesex,
Manufacturer, 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 spirit lamps and has for its object to prevent the cap or
cover coming off and the spirit being spilled, should the lamp happen to be
overturned, and also to prevent evaporation of the spirit when the lamp is not
in use.
The invention consists of an india-rubber packing ring fitting closely around the
neck of the bottle or lamp-body upon which packing the extinguisher cap or cover
fits so as to make a tight joint between the cap or cover and the neck of the lamp.
The invention is illustrated in the accompanying drawing, forming part of this
Specification, in which
Figure 1 represents a part sectional elevation of the spirit lamp, and
Figure 2 shews a similar view of a modification.
a is the packing formed of a ring of india-rubber of the sectional form shewn,
preferably cut off from a tube and of such diameter as to fit tightly around the
neck of the bottle on which it is sprung, its external diameter when in position
thereon being slightly greater than that of the lip or flange at the top of the neck
by which it is retained. c is the cap or cover, which may be of glass, metal, or
earthenware, and is of nearly cylindrical (i.e. very slightly conical) form closed at
top and of such internal diameter as to fit tightly on the packing ring a.
Instead of the ring a being fixed on the bottle neck, as in Figure 1, it might be
carried by the cap or cover which would be provided with two inwardly-projecting
flanges, as in Figure 2, between which the ring would be sprung, the bottle neck
having, in that case, no external lip or flange, and would be made very slightly
[Price 621

page_text: conical to permit of the packing ring slipping on it with a gradually increasing
degree of tightness.
. Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is-
In a spirit lamp, the combination, with the neck of the bottle or lamp-body and
with a cylindrical cap or cover therefor, of an india-rubber packing ring sprung
around the former and upon which the latter fits, substantially as, and for the
purpose, specified.
1002
S. W. ABBOTT,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.