AN AUTOMATICAL KINDLER FOR ELECTRIC LIGHTS
Year: 1877

page_text: LETTERS PATENT to Louis Denayrouse, of Paris (France), Engineer, for the
Invention of "AN AUTOMATICAL KINDLER FOR ELECTRIC LIGHTS."
PROVISIONAL SPECIFICATION left by the said Louis Denayrouse at the
Office of the Commissioners of Patents on the 21st August 1877.
LOUIS DENAYROUSE, of Paris (France), Engineer.
FOR ELECTRIC LIGHTS."
"
:
AN AUTOMATICAL KINDLER.
My Invention relates to apparatus applicable to electric candles of the kind,
described in Provisional Specifications filed by R. Applegarth on the 11th September
1876, No. 3552, and by P. Jablochkoff on the 22nd May 1877, No. 1996, also in the
Specification to Letters Patent granted to the said P. Jablochkoff on the 6th February
1877, No. 494, the object of my Invention being the automatic kindling of such
candles successively as those which are in use burn down.
On a frame or stand of any convenient form I mount two or more electric candles
of the kind referred to, and I provide an electric key for making and breaking.
contact with the electric circuit for each such candle. The said key is worked by
one arm of a lever, the other arm of which has a stud pressed by a spring against
the candle which is burning near its lower end. When this candle has burned.
nearly down so that the stud of the lever is no longer supported by solid matter of
the candle, then the lever and key are moved by the spring, and contact is thus
broken with the circuit for the nearly consumed candle, and is made with the
circuit for a fresh candle, which is thereby kindled, and thus successively as candle
after candle becomes consumed fresh candles are kindled automatically to take their
place.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Louis Denayrouse in the Great Seal Patent Office on the 31st January
1878.
LOUIS DENAYROUSE, of Paris (France), Engineer. "AN AUTOMATICAL KINDLER
FOR ELECTRIC LIGHTS."
My Invention relates to apparatus applicable to electric candles of the kind
described in the Provisional Specification filed by R. Applegarth on the 11th
September 1876, No. 3552, and in the Specifications to Letters Patent granted to
P. Jablochkoff on the 6th February 1877, No. 494, and on the 22nd May 1877,
No. 1996, the object of my Invention being the automatic kindling of such candles
successively as those which are in use burn down.
On a frame or stand of any convenient form I mount two or more electric candles
of the kind referred to, and I provide an electric key for making and breaking
contact with the electric circuit for each such candle. The said key is worked by
one arm of a lever, the other arm of which has a stud pressed by a spring against
the candle which is burning near its lower end. When this candle has burned
nearly down so that the stud of the lever is no longer supported by solid matter of
the candle, then the lever and key are moved by the spring, and contact is thus
broken with the circuit for the nearly consumed candle, and is made with the circuit
for a fresh candle, which is thereby kindled, and thus. successively as candle after..
candle becomes consumed fresh candles are kindled automatically to take their place.
The accompanying Drawings shew the application of my Invention in the case
where two electric. candles are mounted on one stand, the one to be kindled
automatically when the other is nearly consumed, as I will now describe.
Fig. 1 is a front view, Fig. 2 a side view, and Fig. 3 a plan.
the key
B, B¹, are the two candles, each held in its pair of spring clamps a and b ;
lever C, pressed by a spring r, has at its upper end a wire or stud d, held by a
setting screw e; this wire bears against the candle, and so keeps the lever C in such
a position that its arm f is at some distance from g. When the candle B has burned
down nearly to the level of d, the wire being no longer supported against the candle
or becoming consumed, allows the lever C to be forced by the spring into the
position indicated by the dotted lines, so that electrical contact is made between
f and g, and the electrical current is thus passed at once into the candle B₁, which it
kindles.
It is obvious that any number of electrical candles may be arranged to be suc-
cessively kindled in the manner described, each having its key lever C to make
contact for the next in order.
Having thus described the nature of my Invention, and in what manner the same
is to be performed, I claim, an automatical kindler for electric lights, wherein a
contact key is held in opposition to a spring by a wire or stud bearing against one.
burning electric candle until the combustion thereof arrives at such a point that the
key, being no longer supported, moves so as to complete the electrical circuit for
another such candle, substantially as herein described.
In witness whereof, I, the said Louis Denayrouse, have hereunto set my
hand and seal, this Twenty-eighth day of January, in the year of our Lord
One thousand eight hundred and seventy-eight.
Witness,
CHARLES ARMENGAUD,
Civil Engineer,
No. 23, Boulevard de Strasbourg,
à Paris.
L. DENAYROUSE. (L.S.)