Year: 1896

page_text: Date of Application, 15th Apr., 1896
Complete Specification Loft 15th lan 1807 Accented 6th Mar 1897
I, GOMER ROWLANDS, of Bodafon, Llangollen, North Wales, Brewer's Clerk,
do hereby declare the nature of this invention to be as follows:-
My invention relates to a new or improved lamp chimney by means of which
certain advantages are obtained.
In lamp chimneys as usually constructed it is difficult to blow out the light
unless the mouth is placed on a level above that of the top of the chimney or unless
the hand or some deflecting surface be held over the chimney so as to deflect the
breath down the said chimney to the flame. This drawback is very serious as
when the first of the above mentioned plans of extinguishing the flame is adopted
there is great danger, if the lamp is not at once blown out, of drawing the heated
gases into the lungs at the first inhalation after the first blow and many serious
accidents have resulted in this way. When the second of the above mentioned
plans of extinguishing the flame is adopted there is a danger of burning the hand
or other deflecting device employed and serious injuries and fires have resulted
from this.
My invention is designed to overcome this drawback and in carrying it into
effect I remove from one part of the upper extremity of the chimney a triangular,
rectangular or other suitably shaped portion of the glass, mica or other material of
which the chimney is composed.
When it is desired to extinguish the flame of a lamp having a chimney of my
invention all that it is necessary to do is to blow through the space from which the
material has been removed when the breath striking against the opposite wall of
the chimney is deflected downwards in such manner as to bring the current of
air in contact with the flame so as to blow it out.
I desire it to be understood that the device as above described is to be taken
simply as a type or illustration of the scope of my invention; and that I do not
limit myself to the precise form or details of construction herein specified.
Dated this. 10th day of April 1896.
J. G. LORRAIN, M.I.E.E., M.I. Mech. E.,
Norfolk House, Victoria Embankment, London, W.C.,
Chartered Patent Agent.
I, GOMER ROWLANDS, of Bodafon, Llangollen, North Wales, Brewer's Clerk,
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 a new or improved lamp chimney by means of which
certain advantages are obtained.

page_text: In lamp chimneys as usually constructed it is difficult to blow out the light
unless the mouth be placed on a level above that of the top of the chimney or
unless the hand or some deflecting surface be held over the chimney so as to deflect
the breath down the said chimney to the flame. This drawback is very serious as
when the first of the above mentioned plans of extinguishing the flame is adopted
there is great danger, if the lamp is not at once blown out, of drawing the heated
gases into the lungs at the first inhalation after the first blow; and many serious
accidents have resulted in this way. When the second of the above mentioned
plans of extinguishing the flame is adopted there is a danger of buruing the hand
or other deflecting device employed and serious injuries and fires have resulted
from this.
My invention is designed to overcome these drawbacks and in carrying it into
effect I remove from one part of the upper extremity of the chimney a triangular,
rectangular or other suitably shaped portion of the glass, mica or other material
of which the chimney is composed.
In the drawings annexed hereto I show two forms of my invention.
Figure I illustrates a bulb chimney such as is commonly used with kerosene
lamps with flat flame burners. In this figure it will be seen that the chimney is
made with a part 1 of the upper wall removed so as to enable the lamp to be
extinguished in the manner hereinafter to be described.
Figure II illustrates a cylindrical lamp chimney of the kind commonly employed
for circular wick burners. In this figure the removed part 1 is of circular
configuration, constituting a simple orifice instead of an approximately triangular
or rectangular opening as shown in Figure I.
When it is desired to extinguish the flame of a lamp having a chimney of my
invention all that is necessary to do is to blow through the space 1 from which the
material has been removed, when the breath striking against the opposite wall 2 of
the chimney is deflected downwards (in part) in such manner as to bring the current
of air in contact with the flame so as to blow it out.
I desire it to be understood that the forms of orifice or opening herein illustrated
are to be taken simply as types or examples of the forms falling within the scope
of my invention. The said forms may be varied within considerable limits without
departing from my invention.
In order to make up for any diminution of draught due to the said opening or
orifice may slightly increase the length of the chimney.
I
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. The new or improved lamp chimney substantially as set forth.
2. A lamp chimney provided with an opening as set forth with reference to
Figure I.
3. A lamp chimney provided with an orifice as set forth with reference to
Figure II.