An Improved Device for Fitting Reflectors, Shades, Globes, or the like to Electric Incandescent and other Lamps.
Year: 1898

page_text: Date of Application, 6th June, 1898
Complete Specification Left, 6th Mar., 1899-Accepted, 29th Apr., 1899
An Improved Device for Fitting Reflectors, Shades, Globes, or the like
to Electric Incandescent and other Lamps.
I, CURT BARTENSTEIN, of 27, Skalitzer Strasse, Berlin, SO, in the Empire of
Germany, Managing Director, do hereby declare the nature of this invention
to be as follows:
-
This invention relates to a device for fitting reflectors, shades, globes or the
like, particularly those of glass, china or the like, to lamps, more especially
incandescent electric lamps
The device consists essentially of a sochet intended to be inserted in the opening
of the reflector or the like, such socket being so widened or provided with a
projecting flange at one end as to afford sufficient bearing for the said reflector
The reflector is further attached to the socket by means of a ring which may
be either screwed upon the other end of the socket or secured thereon by means
In this
of a bayonet joint, or it may be merely passed upon the said socket
latter case the said ring may be held by means of ears formed of the substance
of the socket itself and bent down upon the reflector In the simpler forms of
carrying out the invention these ears alone will suffice for connecting the reflector
with the socket
In one form the device consists of a substantially cylindrical socket provided
with a turned-up rim and a reduced neck by means of which the socket is passed
upon the base of an incandescent electric lamp, the cylinder of a lamp or the like.
The aperture of the reflector or shade is passed over the socket and rests upon
the flange the said reflector or the like being fixed by means of a ring which 18
screwed upon the corespondingly sciew-threaded socket
In the case of incandescent electric lamps with bayonet sockets, two slots are
formed in the socket for the reception of the bayonet studs. In addition to this,
slits may be made in the upper edge of the socket in order to render the socket
capable of a certain amount of spring and so facilitate its attachment upon the
lamp bases or the like, which may not have been made exactly uniform in size,
a secure fixing being obtained in such cases by compressing the neck of the
Bocket
Instead of screwing the ring upon the socket, it may equally well be united
therewith by means of a bayonet joint, or it may be merely tightly passed upon
the sockets, slits being formed in the 1ing in order to render it capable of a
certain amount of spring.
In other constructional forms the socket is made dome shaped, and the re-
The attachment of the reflectors 18
flector rests upon the widened portion
effected by means of ears of any suitable shape which are formed of the substance
of the socket itself by slitting the same for about one half its height, the said
ears being bent upwards, pressed through the aperture in the reflector and then
bent down upon the same
In order to obtain a better bearing, with this constructional form, and also

page_text: to cover the upper edge of the reflector or the like or to provide ornamentation,
rings conforming as nearly as possible to the shape of the reflector may be in-
serted between the reflector and the socket above and below or upon one side
only In this case the lower ring is first of 'all placed upon the socket then
the reflector or the like and finally the upper ring the ears being thereupon bent
down upon this latter
The portion of the socket coming in contact with the lamp must of course fit
the latter
In the present example the device 18 adapted to be fitted to an electric incan-
descent lamp provided with a bayonet joint, and is formed with slots for the
reception of the bayonet atuds, as, in the first constructional form
The socket may also be of cylindrical form as in the first example instead of
dome shaped, in which case it is provided with a lower supporting flange
Dated this 6th day of June 1898
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, W.C,
Agents for the Applicant.
An Improved Device for Fitting Reflectors Shades, Globes, or the like
to Electric Incandescent and other Lamps.
I, CURT BARTENSTEIN, of 27, Skalitzer Strasse, Berlin, SO., in the Empire of
Geimany, Managing Director, 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 relates to a device for fitting reflectors, shades, globes or the
like, particularly those of glass, china or the like, to lamps, more especially
incandescent electric lamps
The device consists essentially of a socket intended to be inserted in the opening
of the reflector or the hike, such socket being so widened or provided with a
projecting flange at one end as to afford sufficient bearing for the said reflretor
The reflector 18 further attached to the socket by means of a 1ng which may
be either screwed upon the other end of the socket or secured thereon by means
of a bayonet joint, or it may be merely passed upon the said socket In this
latter case the said ring may be held by means of ears formed of the substance
of the socket itself and bent down upon the reflector In the simpler forms of
carrying out the invention these ears alone will sufhce for connecting the reflector
with the socket
In the accompanying drawings
I have shown several forms of the device constructed according to my [1esent
invention, the figures of which are hereinafter referred to
In the form shown in Figures 1-5 the device consists of a substantially
cylindrical socket A provided with a turned-up rim B and a reduced neck C by
means of which the socket is passed upon the base of an incandescent electic
lamp, the cylinder of a lamp or the like.
The aperture of the reflector or shade is passed over the socket A and rests
upon the flange B, the said reflector or the like being fixed by means of a
ing D which is screwed upon the correspondingly screw-threaded socket
In the case of incandescent electic lamps with bayonet sockets, two slots g are
formed in the socket A for the reception of the bayonet studa In addition to
this, slits may be made in the upper edge of the socket A, in order to render

page_text: the socket capable of a certain amount of spring and so facilitate its attachment
upon the lamp bases or the like, which may not have been made exactly uniform
in size, a secure fixing being obtained in such cases by compressing the neck
of the socket
Instead of screwing the ring D upon the socket A it may equally well be
unated therewith by means of a bayonet joint, or it may be merely tightly
passed upon the socket, slits being formed in the ring in order to render it
capable of a certain amount of sping.
In the constructional form illustrated in Figures 6 to 11 the socket a is made
dome shaped, and the reflector rests upon the widened portion a¹ The attach-
ment of the reflectors 18 effected by means of cars 6 of any suitable shape which
are formed of the substance of the socket itself by shitting the same for about one
half its height, the said ears being bent upwards, [ressed through the aperture
in the reflector and then bent down upon the same This method of fixing 18
indicated by dotted and full lines in Figure 8, the ears 6 shewn may be given
various shapes
In order to obtain a better bearing with this constructional form, and also to
cover the upper edge of the reflector or the like or to provide ornamentation,
1ings d and conforming as nearly as possible to the shape of the reflector may
be inserted between the reflector and the socket above and below or upon one
side only. In this case the lower ring f is first of all placed upon the socket a,
then the reflector or the like and finally the upper ring d, the ears b being
thereupon bent down upon this latter
The portion of the socket coming in contact with the lamp must of course fit
the latter
In the example illustrated, the device is adapted to be fitted to an electric in-
candescent lamp provided with a bayonet joint, and is formed with slots g for
the reception of the bayonet studs, as in the first constructional form
The socket a may also be of cylindrical form as in the first example instead
of dome shaped in which case it is provided with a lower supporting flange h,
as shown in Figure 11.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is.-
1 A device for fitting reflectors, shades, globes, or the like to lamps, more
especially incandescent electric lamps, consisting of a socket (A) which passes
through the aperture of the reflector or the like and forming a support for the
eflector, the said socket being pressed upon the portion of the lamp adapted
for the purpose and the reflector on the like held thereon by means of a ring (D)
screwed or otherwise fastened upon the said socket.
2 A device for fitting reflectors, shades, globes, or the like to lamps, more
especially electric incandescent lamps, consisting of a dome shaped or spherical
widened socket (a) in which the attachment of the reflector is effected by means
of ears (b) formed of the substance of the socket (a) and bent down either upon
a special ring (d) or upon the reflector itself
3 A device in accordance with Claim 2, in which the socket (a) is substantially
cylindrical in shape and is provided with a flange for the support of the reflectoi
Dated this 6th day of March 1899
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, WC.
Agents for the Applicant