A New or Improved Incandescent Electric Lamp.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
A New or Improved Incandescent Electric Lamp.
We, JEAN RENOUS and BOLESLAS BRONISLAWSKI, both of 99, Cours Balguerie,
Stuttenberg, Bordeaux, France, Civil Engineers, do hereby declare the nature of
this invention to be as follows:-
Our invention relates to improvements in Incandescent lamps.
In order that our invention may be more clearly understood reference is made
to the annexed drawing in which :
Fig. 1 represents an incandescent lamp.
Fig. 2 a section in the insulator through X X, Fig. 1.
Fig. 3 a bottom view of the conductor and of the insulator.
Fig. 4 is a pin and
Figs. 5 and 6 show modifications of the incandescent lamp.
In all these figures the same letters refer to corresponding parts.
This lamp differs from others at present in use by its filament which is composed
of several branches. The drawing illustrating this description represents a lamp
divided into four branches in such a way that the support A (Fig. 1) is soldered to
the positive conductor passing through the centre of the insulator which in its
turn is in communication with the positive pole of the electric source.
The four branches of the filament B C, DE are soldered to the four metallic
supports. The extremities of these branches are themselves soldered to the
metallic plate M NR S. The plates M N R S are fixed on the insulating support.
The lower half of the insulator is a metal ring Y. To put the branches of the
filament into communication with the ring Y, the pins (see Fig. 4) must be
placed in the apertures a b c d.
The plates MNR S are then in electric communication with the ring Y which
inrn is in communication with the positive pole of the electric source.
Suppose we have placed a pin in the aperture a, the branch of the filament
corresponding to the plate M will become incandescent and the three other
branches will remain unincandescent. By placing the pins successively in one
of the apertures a brd we can light successively each of the branches B C D E.
By putting several pins at the same time into the different holes we can light
several branches at the same time.
The branching of the filament has several applications the principal of which
are:-
1. When a branch is worn out the next may be employed, so that if, for
instance, the branch B is unserviceable, by putting a pin in d the branch E will
be called into service. Then the branch E on becoming useless will be replaced
by the branch D) and so on.
2. The intensity of the light of the lamps may be regulated at will.
Thus, supposing that each branch of the filament corresponds to an intensity
of 16 candles by putting into circuit one, two, three or four branches an intensity
of 16, 32, 48 or 64 candles is obtained at will."

page_text: 3. The progressivo regulation of the intensity of the light may be obtained.
For example supposing one branch corresponds to an intensity of 1 candle, the
second to 2, the third to 4, the fourth to 8, the fifth to 16 and the sixth to 32.
by combining at will the grouping of those different branches all the intensities of
1, 2, 3-63 candles may be obtained.
Figs. 5 and 6 serve only to show the various forms of support we have employed
to utilize the branching of the filament according to the different modes of
employment.
In Fig. 5 the negative extremities of the branches are joined to the
plates e, f, g, h.
By sinking the lamp more or less into the socket one, two, three or four branches
are put into circuit.
The support is an insulator the plates e, f, g, h are conductors.
In Fig. 6, the support is an insulator, the plates GIIJK, are in communication
with the corresponding branches. The matallic ring L is set on the support, and
is in communication with the source of electricity.
The current enters as in the other models by the centre of the insulator. The
ring is an insulator, it is movable around the support.
This ring having a metallic plate fixed inside opposite the rod F gives a
conducting communication with the source of electricity when the rod F is
opposite the branches (EJK.
These dispositions are applicable when it is necessary to employ the branches
according as they are worn out.
Dated this 28th day of August 1896.
A. H. REED.
Agent for Applicant.
COMPLETE SPECIFICATION
A New or Improved Incandescent Electric Lamp.
We, JEAN RENOIS and BOLESLAS BRONISLAWSKI, both of Cours Balguerio
Stuttenberg, 99 Bordeaux France, Civil Engineers, do hereby declare the nature 3
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:-
Our invention relates to improvements in Incandescent lamps.
In order that our invention may be more clearly understood reference is made
to the annexed drawing in which :-
Fig. 1 represents an incandescent lamp.
Fig. 2 a section in the insulator through X X Fig. 1.
Fig. 3 a bottom viow of the conductor and of the insulator.
Fig. 4 is a pin and
Figs. 5 and 6 show modifications of the incandescent lamp.
In all these figures the same letters refer to corresponding parts.
3
In our lamp the disposition of the filaments in the ampulla itself of the lamp
is completely different from anything existing. In this lamp the extremities of
the filaments are joined to a common pole in the interior of the lamp so that in n
lamp with two branches we have only three supports of filaments as represented 4
in the drawing.
Thus the principle of our disposition being the division of the conductor in
the ampulla itself of the lamp, a division that takes the form of spiders' feet it
is possible to obtain as many branches as required, since the independent
extremities of the filaments are joined to supports placed on a circumference 4
concontric to the horizontal section of the socket. If the number of divisions is

page_text: increased it is only necessary to increase proportionally the number of terminals
fixed at the lower surface of the sockets. The drawing illustrating this description
represents a lamp divided into four branches in such a way that the support A
(Fig. 1) is soldered to the positive conductor passing through the centre of the
insulator which in its turn is in communication with the positive pole of the
electric source.
The four branches of the filameut BCDE are soldered to the four metallic
supports. The extremities of these branches are themselves soldered to the
metallic plates MNRS. The plates MNRS are fixed on the insulating support.
The lower half of the insulator is a metal ring Y. To put the branches of the
filament into communication with the ring Y, the pins I, (see Fig. 4) must be
placed in the apertures a bed. The plates MNRS are then in electric
communication with the ring Y which is joined to the negative pole of the electric
source. Suppose we have placed a pin in the aperture a the branch of the
filament corresponding to the plate M will become incandescent and the three
other branches will remain unincandescent. By placing the pins successively in
one of the apertures a b c d we can light successively each of the branches B C DE
by putting several pins at the same time into the different holes, we can light
several branches at the same time.
The branching of the filament has several applications the principle of which
aro:-
1. When a branch is worn out the next may be employed so that if for instance
the branch B is unserviceable, by putting a pin in d'the branch E will be called
into service, then the branch E on becoming useless will be replaced by the
branch D and so on.
2. The intensity of the light of the lamps may be regulated at will. Thus
supposing that each branch of the filament corresponds to an intensity of
16 candles by putting into circuit one two three or four branches an intensity of
16, 32, 48, or 64 candles is obtained at will.
3. The progressive regulation of the intensity of the light may be obtained.
For example supposing one branch corresponds to an intensity of 1 candle, the
second to 2 the third to four the fourth to 8 the fifth to 16 and the sixth to 32
by combining at will the grouping of those different branches all the intensities
of 1, 2, 3, 63 candles may be obtained.
Figs. 5 and 6 serve only to show the various forms of support we have employed
to utilize the branching of the filament according to the different modes of
employment.
In Fig. 5 the negative extremities of the branches are joined to the
plates e, f, g, h.
By sinking the lamp more or less into the socket one, two three or four branches
are put into circuit.
The support is an insulator, the plates e, f, g, h are conductors.
In Fig. 6 the support is an insulator, the plates G H J K are in communication
with the corresponding branches. The metallic ring L is set on the support and
is in communication with the source of electricity. The current enters as in the
other models by the centre of the insulator.
gives a
The ring is an insulator, it is movable around the support.
The ring having a metallic plate fixed inside, opposite the rod
conducting communication with the source of electricity when the rod F is
opposite the branches G H JK.
These dispositions are applicable when it is necessary to employ the branches
according as they are worn out.
Having now particularly described and ascertained the nature of our invention
and in what manner the same is to be performed we declare that what
claim is:-
we
An incandescent electric-lamp with several independent filaments meeting

page_text: and forming one common extremity in the interior of the ampulla aud joined by
this extremity to the line of the electric current by a single electric support
which alone protrudes beyond the ampulla of the lamp, the independent
extremities of the filaments protruding from the ampulla of the lamp independently
of one another and joined to the metallic terminals fixed to the socket of the lamp 5
in a circle concentric to its section.
Dated this Tanto and dow of 100%