IMPROVEMENTS IN AND RELATING TO APPARATUS FOR MOUNTING OR SUPPORTING ELECTRIC LAMPS communicated to him from abroad.
Year: 1883

page_text: LETTERS PATENT to William Robert Lake, of the firm of Haseltine Lako
and Co, Patent Agents, Southampton Buildings, London, for an Invention
of "IMPROVEMENTS IN AND RELATING TO APPARATUS FOR MOUNTING OR
SUPPORTING ELECTRIC LAMPS communicated to him from abroad' by Jean
Languereau of Paris, France.
"
PROVISIONAL SPECIFICATION left by the said William Robert Lako at
the Office of the Commissioners of Patents on the 28th June 1883.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & C° Patent Agents,
Southampton Buildings, London, "IMPROVEMENTS IN AND RELATING TO APPARATUS
FOR MOUNTING OR SUPPORTING ELECTRIC LAMPS [a communication to him from
abroad by Jean Languereau of Paris, France.]
"
This invention relates to improvements in apparatus for mounting or supporting
electric lamps and it consists essentially in the adaptation of incandescent lamps to
the top of a tubular support having the form of a candle, this support being
arranged in such a manner as to allow of the casy application of the lamp, the
admission of the current in such a manner as to conceal the conducting wires
through which it passes and the rapid erection and removal of the said lamps.
It will be readily understood that this arrangement. of incandescent lamps is
specially applicable to chandeliers, candelabra and the like which are now in use.
According to the said invention I make use of an arrangement which enables the
lamp to be readily removed and avoids all manipulation for establishing the electric
contacts.
In carrying the said invention into practice I provide a tubular support which
may be made of china, glass, motal or any other suitable material enamelled or
painted, the shape and size of which support are similar to that of a candle; at the
upper part of the said support a small incandescent lamp is applied and the lower
end of the said standard is fixed by means of a screw thread or in any other suitable
manner to a socket or holder which is fixed in the arm of a candelabrum or chandelier
of any description,

page_text: The upper part of the tubular support is provided with a metallic collar and the
base of the lamp also carries a metallic collar which is fastened upon the other one
by means of a joint or in any other suitable manner; the lower part of the said
support is provided with a nut which screws into a tube provided with a screw
thread and fitted in the centre of the socket or holder above mentioned.
The tubular support is provided internally with a projection upon which rests a
spiral spring supporting a piece of insulating material upon which the lamp is
fastened in the ordinary manner, that is to say, to the hooks which are attached to
the extremity of the conducting wires, and upon which the said lamp is main-
_tained by means_of_the_spiral spring_above mentioned. Whenever_the_lamp_is
turned round slightly in order to disengage it from the said joint, the said spring
forces it out of the tubular support thus permitting another lamp to be substituted.
The interior portion of the tube-situated below the said projection constitutes. a
chamber in which a sufficient length of the conducting wires is located in order to
facilitate the removal of the lamp and of its attachment piece.
When it is impossible to completely conceal the conducting wires in the branches,
arms or other parts of a chandelier or candelabrum into which the said wires enter
through the tube provided with a screw thread as herein before described, I arrange
at the bottom of the tube, openings through which the wires can easily pass and
afterwards follow the outer contour of the branches, arms or supports of the
.chandeliers or the like.
When the tube and the plate whereupon the basis of the support or lamp bearer
rests are taken out of the socket or holder the same socket may be utilized for
holding ordinary candles, the chandelier to which the electric lamp has been
adapted not having been altered in any way.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the
22nd December 1883.
WILLIAM ROBERT LAKE of the firm of Haseltine, Lake & Co Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN AND RELATING TO APPARATUS
FOR MOUNTING OR SUPPORTING ELECTRIC LAMPS."-A communication to me from
abroad by Jean Languereau, of Paris, France.
This invention relates to apparatus for mounting or supporting incandescent
electric lamps and consists essentially in the application of incandescent lamps of
small size to the top of a tubular support having the shape and appearance of an
ordinary candle, this support being arranged in such a manner as to permit the easy
application of the lamp, the electrical conducting wires to be concealed, and the
rapid erection and removal of the said lamps.
This arrangement for incandescent lamps is specially applicable to chandeliers,
candelabra, brackets of all descriptions, and the like, which are now in use, and
necessitates no alteration of the same.
In the accompanying drawing.
Figure 1 is a sectional elevation of apparatus constructed according to this
invention.
Figure 2 is an elevation of the lamp detached, and
Figure 3 is a sectional view of the same.
In carrying the said invention into practice I provide a tubular support a which
may be made of china, earthenware, opal-glass, metal or any other suitable material,
enamelled or painted, the shape and size of the said support being similar to that
of a candle. At the upper part of the support a a small incandescent lamp b is
applied and at the lower end of the said standard is fixed, by means of a screw
thread or in any other suitable manner, the socket or holder c, which is attached to
the arm of a candelabrum, chandelier or bracket of any description by means of the
screw threaded nipple o.
The upper part of the tubular support a is provided with a metallic collar d and
the base of the lamp also carries a metallic collar e which is secured to the collar d
by means of a bayonet joint or in any other suitable manner. The lower part of
the support a is provided with a collar f which screws onto a tube h provided with
a screw thread and fitted in the centre of the socket or holder c.
The tubular support a is provided internally, and at a suitable height, with a
flange k upon which bears a spiral spring i which supports a piece of insulating
material which has attached to it the conducting wires g. The lamp is attached
to the conducting wire in the ordinary manner the contact being maintained by a
spiral spring which bears upon the said piece j and against the underside of the
lamp.
Whenever the lamp 6 is turned round slightly in order to disengage it from the
bayonet joint, the spring i forces it out of the tubular support a thus permitting
another lamp to be substituted.
"
The internal portion of the tube a situated below the flange k of the said tube
constitutes a chamber in which a sufficient length of the conducting wires g is
located in order to facilitate the removal of the lamp and of its piece j.
When it is impossible to completely conceal the conducting wires in the branches,
arms, or other parts of a chandelier or candelabrum so that they pass through the
tube h, I form at the bottom of the tube a, apertures m through which the wires
can be easily passed into the tubular support and attached to the lamp.

page_text: When the tube h and the plate n upon which the support and lamp bearer a
rests are taken out of the socket or holder c the same socket may be utilized for
holding ordinary candles, the chandelier to which the electric lamp has been adapted
not having been in any way altered.
Having thus fully described the said invention as communicated to me by my
Foreign Correspondent, and the manner of performing the same, I wish it under-
stood that I Claim
"
First. The tubular, support, substantially as hereinbefore described and shewn in
the accompanying drawing, the said support having the shape of an ordinary
candle and being adapted to receive upon its upper end an incandescent lamp; the
said tubular support being applicable to all kinds of candelabra, chandeliers,
brackets and the like without altering the shape or appearance of the same.
Second. The application to the upper part of a tubular support, which may be
of china, stoneware, opal-glass, metal, or other suitable material, of a metallic collar
adapted to have connected with it by means of a bayonet or other suitable joint,
an incandescent lamp, substantially as described.
Third. The application to the lower part of the support, of a screw threaded
collar for fixing the said support onto a metallic tube arranged in the centre of
the socket c, as set forth
Fourth. The arrangement within the tubular support of a flange or other projec-
tion, having bearing against it a spring which supports the lamp and the accessory
pieces connecting the same to the conducting wires and allows of the said lamp and
its accessories being removed from the tubular, support so that another lamp may
be rapidly substituted therefor.
Fifth. The utilization of the lower part of the said tubular support for the
reception of a portion of the conducting wires, substantially as, and for the purpose,
set forth.
Sixth. The provision at the lower part of the said tubular support of lateral
apertures designed to permit the entrance of the conducting wires into the said
support when the said wires cannot be concealed within the branches or arms of
the chandelier, candelabra, or other apparatus to which the improved holder is
applied.
.
In Witness whereof I the said William Robert Lake have hereunto set my hand
and seal this Twentieth day of December in the year of Our Lord one thousand
eight hundred and eighty-three.