Improvements in or relating to Oil Lamps.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Oil Lamps.
I, JOSEPH DOMECO-CAZAUX, of 91, Boulevard de Strasbourg, Paris, in the
public of France, do hereby declare the nature of this invention and in what
nner the same is to be performed, to be particularly described and ascertained
and by the following statement:-
-
mis mvention relates to means for gating on tamps by rectricity.
In the accompanying drawing,
Figure 1 is a vertical section and
Figure 2 is a plan of a lamp burner embodying my improvements.
In carrying out the invention an iron ring or plate A A serves as a support for a
small electro-magnet formed by two coils B B. This plate is provided at its centre
with a cylindrical copper tube C to which it is fixed. The upper part of this tube
is cut obliquely and the lower part perpendicularly to the axis and stops at the free
ends of the coils.
The end plates of the bobbins are formed of copper plates D D and F F twice
bent at right angles. A copper plate F1, the ends of which are also bent at right
angles, has the coils resting thereon and encloses the internal mechanism. The
plate F, to which is connected at its centre a copper tube H narrowed at its upper
part is further provided on its sides with two vertical triangular pieces which are
Screwed at I to the tube C the whole forming a rigid frame and which can be
adapted to the majority of mineral oil lamps by introducing the lamp burner into
the tube H.
A hood E of thin copper formed in one piece, with the exception of a counter-
weight K is hinged at L to the tube C, this hood by describing a quarter of a circle
around the point L covers the end of the tube C and extinguishes the flame.
The armature of the electro-magnet is constructed of a strip of soft iron M
formed with an annular opening at its centre part to allow of the passage of the
tube H. Two small copper tubes P the lower ends of which are formed with bolts
are fixed in two holes in the armature and are insulated therefrom by a bone
plate O, two bone washers U and india-rubber tubes. The upper ends of the
tubes P are connected by a platinum wire coiled spirally and connected to the
tubes by two pins. Two copper strips R forming lateral springs are connected to
the tubes and serve to receive the current and are jointed to the two bolts Y.
At the free end of the armature is fixed a small plate of thin copper V, the object
of which is to prevent the effect of the residual magnetism.
A copper rod T is screwed into the armature on the opposite side of the annular
opening to the two tubes P and the bevelled end of this rod bears against a small
tongue on the hood E. The coil wires are formed of insulated copper wire fo of a
millimetre in diameter. It is wound in the same direction on both coils and the
end of each wire is bared and fixed before coiling in holes formed in the plates D.
Electric communication between these two ends is effected through the frame of
the apparatus. One of the binding screws S S fixed beneath the washer A. and
insulated is connected to the wire from one of the coils and the other to one of the
insulated bolts Y. The other bolt Y is connected to the wire from the other coil.
By this construction the lamp wick being covered by the hood E if the two
binding screws S S are united to the two poles of an ordinary battery the armature
is attracted the heads of the pins on the tubes P strike below the hood E, cause it
to swing back and uncover the wick. The current passing through the platinum
wire heats it to incandescence and lights the lamp. On the current ceasing to pass
the armature falls and the hood is completely lowered allowing the flame to freely
burn. To extinguish the flame it is only necessary to again cause the current to

page_text: pass when the rod T moves the hood in the reverse direction and brings it back
almost to its first position resting on the heads of the pins. On the current being
interrupted the armature again falls, the hood' finishes its movements and completely
covers the lamp burner.
This apparatus is provided with a double wire and' a simple button or knob for
making contact. The button is pressed in the same manner both for lighting and
.extinguishing.
A gallery Gallows of a bulbous lamp glass being employed in order to obtain a
more powerful light. The lamp wick being regulated to the desired height is
always ready for use. The gallery G can be removed when it is desired to use the
lamp without a glass and for this purpose it is provided with two stops which
engage with corresponding bayonet slots formed in the apparatus.
As mineral oil lamps are generally provided with tubes of 8 millimetres and less
this apparatus can be adapted to most of the lamps now in use for which purpose it
is only necessary to slightly flatten the lamp tube in order to insert it in the tube
of the lighting apparatus.
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
The improved means for lighting oil lamps by electricity, substantially as herein-
before described and illustrated in the accompanying drawings.
T
Ր $ 11002
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.