Пиргоощади TTY Electric Lamps.
Year: 1897

page_text: Date of Application in the United Kingdom, 22nd Apr., 1897.
Complete Left, 19th Jan., 1898-Complete Accepted, 19th Feb.,
1898
. PROVISIONAL SPECIFICATION.
Пиргоощади
TTY
Electric Lamps.
I, LOUIS MASSON, of 33, Rue de Vincennes, Montreuil sous-Bois, (Seine), France,
Electrician, do hereby declare the nature of this invention to be as follows:-
:-
This invention refers to improvements in, or connected with holders for incandescent
electric lamps, such holders being composed of porcelain so constructed that the
disc or washer carrying the wire connections is capable of independent motion,
whereby torsion of the conducting wires is prevented when attaching the lamps.
According to my invention I form the body of the holder of a porcelain shell to
contain within it a disc or washer, (also made of porcelain), which latter washer is
capable of freely rotating within the said outer shell; to effect this, and as a matter
of construction, I form the body of the holder in two parts, the division occurring
at the internally channelled or grooved part, I then insert the washer, and bring and
fix the divided edges of the shell together before the porcelain is fired or baked.
The finished holder then presents absolutely the same appearance that it would if it
had been obtained at first from a single piece.
The mouth or socket of the holder adjacent to one face of the washer is formed.
with means for holding the lamp such as with two diametrically opposite bayonet
slots adapted to receive projecting pins upon the lamp.
Adjacent to the opposite face of the washer the shell is provided with a metal
ferrule screw threaded internally and fixed to the porcelain.
The washer is fitted with two terminals or binding screws, and two contact studs,
generally spring studs, while each terminal is respectively connected to one of the
contact studs. The electric conducting wires are held in the terminals by screw
studs which are tightened by passing say a screw driver through an aperture in the
side of the casing.
It will now be readily understood that when holders constructed according to my
invention are screwed into position the washer or disc and consequently the wires
attached thereto do not rotate with the shell or body of the holder, and thus the
wires are not torsionally twisted.
In cases where it is specially desired that the washer and the shell shall be fixed to
one another, it is only necessary to screw into one of the terminals a screw sufficiently
long for its head part to engage in one of the apertures through which it is passed in

page_text: the side of the shell; or the washer and holder may be connected by inserting a
pin or screw through the walls of the shell into the thickness of the washer.
I may in some cases vary the form details, materials and dimensions of my
improved holders, without departing from the spirit of my invention.
Improvements in or connected with Holders for Incandescent
Electric Lamps.
I, LOUIS MASSON, of 33, Rue de Vincennes, Montreuil-sous-Bois, (Seine), France,
Electrician, 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 :-
This invention refers to improvements in, or connected with, holders for incandescent
electric lamps, such holders being composed of porcelain, so constructed that the dise
or washer carrying the wire connections is capable of-independent motion whereby
torsion of the conducting wires is prevented when attaching the lamps.
My invention will be readily understood by the following description having
reference to the accompanying drawings, whereon Fig. 1 shews my holder in elevation
applied to an incandescent lamp, Fig. 2 is a plan view of the holder, the lamp having
been removed. Fig. 3 is a vertical section of the holder, the lamp removed, and Fig. 4
shews the holder in horizontal section taken on the line 1-2 of Fig. 3.
Similar letters of reference refer to like parts in the several figures of the
drawings.
According to my invention I form the body of the holder of a porcelain shell a to
contain within it a disc or washer 6 (also made of porcelain), which latter washer b is
capable of freely rotating within the said outer shell; to effect this and as a matter
of construction, I form the body of the holder in two parts, the division occurring,
say on the line 1-2, Fig. 3, at the internally channelled or grooved part c, I then
insert the washer b, and bring and fix the divided edges of the shell a together before
the porcelain is fired or baked. The finished holder then presents absolutely the
same appearance that it would if it had been obtained at first from a single piece.
The mouth or socket of the holder adjacent to one face of the washer b is formed
with means for holding the lamp such as with two diametrically opposite bayonet
slots & adapted to receive projecting pins e upon the lamp f. Adjacent to the opposite
face of the washer the shell a is provided with a metal ferrule screw g threaded
internally and fixed to the porcelain as shewn at Fig. 3.
The washer bis fitted with two terininals or binding screws and two contact studs h,
generally spring studs, while each terminal i is respectively connected to one of the
contact studs h by metal plates k. The electric conducting wires j are held in the
terminals by screw studs which are tightened by passing say a screw driver through
apertures m in the side of the casing a. It will now be readily understood that when
holders constructed according to my invention are screwed into position, the washer
or disc b, and consequently the wires attached thereto, do not rotate with the shell
or body a of the holder, and thus the wires are not torsionally twisted.
In cases where it is specially desired that the washer and the shell shall be fixed to
one another, it is only necessary in place of the screw to screw into one of the
terminals a screw sufficiently long for its head part to engage in one of the apertures

page_text: through which it is passed in the side of the shell; or the washer and holder may be
connected by inserting a pin or screw through the walls of the shell into the thickness
of the washer.
I may in some cases vary the form, details, materials and dimensions of my
improved holders, without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. A porcelain holder for incandescent electric lamps, the holders being made in
two parts cemented together before baking, and having an internal groove c receiving
and engaging the edges of a porcelain washer b, in such manner that the holder or
shell can turn on the washer, whereby the electric conducting wires ; and the washer
do not turn when the holder is screwed onto the suspension apparatus, and torsion of
the wires is prevented, all substantially as described.
2. In porcelain holders for incandescent lamps, as claimed by Claim 1, the fixing of
the conducting wires j in the terminals by means of screws l in such manner that they
can be adjusted by passing a tool through openings m formed in the holder, the
fixing screws not impeding the capability of motion of the holder about the washer,
substantially as described.
3. The general arrangement and combination of parts composing my improved
porcelain holder for incandescent lamps all constructed and acting substantially as
and for the purposes described and illustrated with reference to the accompanying
drawings.