Year: 1887

page_text: Date of Application, 6th June, 1887
Complete Left, 5th Mar., 1888
Complete Accepted, 27th Apr., 1888,
I, ISIDOR KOHN, of Währing, near Vienna, in the Empire of Austria, Engineer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to means for automatically extinguishing lamps.
According to the said invention, the wick tube of flat and round burner lamps is
surrounded by a correspondingly shaped weight movable thereon and supported by a
coiled spring, the power of which is sufficiently great to be overcome by the full
pressure of the weight only, placed vertically above the spring; while, on a slight
inclination of the lamp, the spring will expand and push the weight toward the end
of the wick tube.
To the upper surface of the said weight are articulated, by means of hinge joints,
two clacks, opposite to each other, and adapted to entirely close the central hole of
the weight, when they are moved toward each other. By a suitable spring, each of
these clacks is constantly pressed inward, so that on the one hand the clacks bear
against the wick tube when the weight is in its normal position, and that, on the
other hand, the said clacks will unite together above the burner, as soon as the weight
has moved on the wick tube sufficiently far.
In order to admit of an easy displacement of the weight and clacks along the wick
tube, the edges of the clacks which bear against the said tube, are provided with
antifriction rollers; the special and most important office of these rollers, which
extend along the full length of the edges of the clacks, being to prevent the clacks
from gripping the wick, and (especially with flat burner lamps) to improve the
certainty of action as they roll over the burning edge of the wick.
Dated this 6th day of June 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Means for Automatically Extinguishing Lamps.
I, ISIDOR KOHN, of Währing near Vienna in the Empire of Austria 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 -
My invention relates to means for automatically extinguishing lamps.
According to the said invention, the wick tube of flat and round burner lamps is
surrounded by a correspondingly shaped weight or weighted socket movable thereon
and supported by a coiled spring, the power of which is sufficiently great to be
overcome by the full pressure-of the weight only, placed vertically above the spring,
while on a slight inclination of the lamp the spring will expand and push the weight
toward the end of the wick tube.
To the upper edge of the said weighted socket are hinged, on opposite sides of the
wick tube, two sheet metal casings of such a. form as to entirely close the central
hole of the socket, when they are folded together. Suitable springs acting upon the
said hinged casings continually tend to turn them inward, so that the upper edges
of the casings bear against the wick tube when the weight or socket is in its normal
position, and that, on the other hand, the said casings will unite together above the
wick protruding beyond the burner, as soon as the socket has slid sufficiently far
along the wick tube.
In order to admit of an easy displacement along the wick-tube of the weighted
socket and the casings hinged thereon, the upper edges of the said casings, which
bear against the said tube, are provided with antifriction rollers, extending along
the full length of the said upper edges. The most important office of these rollers is
to prevent the upper edges from being stopped in consequence of their gripping the
wick, and (especially in flat burner lamps) the said rollers moreover improve the
certainty of action, as they roll over the burning edge of the wick and thereby
extinguish the same.
In the accompanying drawing
Figure 1 is a sectional elevation of a flat burner provided with the automatic
extinguisher hereinafter described, and
Figure 2 is a sectional elevation of a circular burner having the improved
extinguisher fitted upon it.
Figure 3 is a perspective view of the wick tube and extinguisher.
Figure 4 is a plan view of the burner and the extinguisher folded together over
the wick.
As clearly shown in Figures 1 and 3, a tubular weight 9 encloses the wick tube b
and this weight rests on a coiled spring, which is compressed by the said weight,
when the lamp is standing uprightly, but which is of sufficient strength as to
expand, when in consequence of the lamp's assuming an inclined position, a mere
component of the weight acts upon it.
To the top of the said weight or socket 9 are hinged, on opposite sides of the wick
tube b, two casings and of such a form as to entirely enclose the top portion
of the wick tube when folded together; consequently, the said casings and k¹ will
k

page_text: be of rectangular form in the case under consideration. By means of springs,
the upper edges of the said casings k and k¹ are constantly pressed against the
wick tube b; in Figure 3 a coiled spring v is shown, which surrounds the joint
pin c, and of which one end i bears against the top surface of the weight g, while
the other end bears against the upright side of the casing k₁.
In order to prevent the horizontal top edges of the casings k and k¹ from being
(if the lamp should be accidentally upset) stopped by dirt or dust adhering to the
wick tube b, as well as from gripping the protruding end of the wick, the said
edges are provided with antifriction rollers r extending along the entire length of
the said top edges. As will be readily understood, the rollers r will, in rolling over
the burning end of the wick contribute in a large part to the safe extinguishing of
the flame.
The automatic extinguisher for circular burners, shown in Figures 2 and 4 is of
identical construction except the form of the hinged casings or caps k, k, which are
in this case of half-cylindric-form. The spring upon which rests the weight g, is
supported by a recessed partition h₁ of the recessed casing hintended to support the
glass chimney, and the weight g has a number of recesses z formed on its inner
surface, in order to afford sufficient free space for the passage of the air, which is
caused to flow upward by the draught.
As it is desirable that the described automatic extinguisher should not entirely slide
down from the wick tube, when the lamp is upset, wires s are provided, which are
passed through the slots or recesses in the case hand partition h, and hooked into
eyes formed on the under surface of the weight g, the free ends of the said wires s
being provided with small heads or knobs n. It is obvious, that, by means of the said
wires 8, one may
also extinguish the lamp at will.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what 1
claim is :-
First. In an automatic extinguisher for lamps, the combination with a weighted
socket enclosing the wick tube and movable thereon, of a spring supporting the said
socket and being of such a force as to expand when the lamp assumes an inclined
position, of two casings hinged to the top of the said socket on opposite sides of the
wick tube and so shaped as to entirely enclose the top of the wick tube when folded
together, of springs, which continuously tend to turn the said hinged casings toward
each other, and of antifriction-rollers arranged on the upper edges of the said casings,
substantially as and for the purpose described.
Second. In an automatic extinguisher for lamps, the combination with the parts
enumerated in the 1st claim, of wires, passed through the slots of the casing, which
supports the glass chimney, and hooked by their upper ends into eyes formed on the
weight, while the lower ends of the said wires are provided with knobs, substantially
as, and for the purpose, set forth.
Third. In automatic extinguishers for lamps the combination with the hinged
clacks or caps intended to slide along the wick tube and to fold down upon the wick
under the action of springs, of rollers extending along the upper edges of the said
clacks or caps, substantially as, and for the purpose, set forth.
Dated this 5th day of March 1888.