Improved Detachable Securing Mechanism for Electric Incandescent Lamp Shades.
Year: 1897

page_text: Date of Application, 25th Sept., 1897--Accepted, 6th Nov., 1897
COMPLETE SPECIFICATION.
Improved Detachable Securing Mechanism for Electric Incandescent
Lamp Shades.
I, PAUL PHILIPP ADOLPII, of No. 6, Beuth Strasse Berlin in the Kingdom of
Prussia and Empire of Germany Merchant, 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:-
In the mounting of electric incandescent light there occurs a drawback in that
for securing the shades surrounding the incandescent lamps, which shades are
usually formed in the shape of a reflector, the so-called reflector holders must
be made use of which involves considerable loss of time in mounting and dis-
mounting. On this account reflectors have been designed provided with a screw
thread as usually provided on the lamp, and the said reflector is then screwed into
the holder in place of the lamp. This again involves the use of a specially con-
structed lamp, or else that a smaller kind of lamp should be applied than that
properly belonging to the lamp holder. For instance, in the case of the Edison
fittings the so-called "Mignon" incandescent lamp and so forth. Moreover, the
separate parts of these reflectors have been cemented together or secured with
gypsum which again caused the drawback that in the case of the reflector which
is usually constructed of silvered glass being broken or rendered useless, the
screw thread connected therewith by means of the gypsum or cement could no
longer be made use of. On the other hand the reflector glass was no longer
available if the screw thread serving as a conductor for the electric current has
been damaged by wear or short circuiting.
The various drawbacks accompanying the use of the reflectors or covers hitherto
in use are now completely remedied by the prosent invention.
The shade in question, whether reflector, glass dome or the like, may be accord-
ing to this invention secured. to the support, not only without a special holder,
but it is also hereby rendered possible to use the same type of incandescent
lamps for which the respective support is designed. Further the shade glass
or the screw connected therewith or current-conducting connecting organ (bayonet
joint, spring catch or the like) can be used again as often as desired elsewhere
in case the one or the other part of the apparatus becomes unserviceable. The
mounting itself is moreover considerably simplified because the parts are simply
connected together detachably by screwing.
In the accompanying drawing the object of the invention is illustrated as
follows:
-
Figure 1 shows a vertical section through the reflector fastening.
Figure 2 a view from above, of the same, and,
Figure 3 a section on the line of Figure 1.
The shade a for which in the modification shown in the drawing a silvered
glass reflector is made use of, rests upon a projecting edge of the lower screw
fastening which is firmly connected to the insulating body c by means of the
screw d. The insulating body c is enveloped by the screw socket e which corre-

page_text: sponds to the reflector holding screw and is screwed on in place of the incandescent
lamp. The screws d effect one current connection to the part and the other
current connection is effected by the screw f. The incandescent lamp which is
of the usual size is screwed into the box b and makes connection on the one
hand from the box and on the other hand from the screw f. If the reflector a
is to be exchanged or removed it is only necessary to unscrew the box and the
various parts may then be replaced in the simplest manner.
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. Detachable securing mechanism for reflectors or other shades for electric
incandescent lamps characterised by having the metal parts b de connected to
the reflector a and conducting the electric current and the insulating body c so
arranged that upon the release of the connections & holding the whole together
which at the same time conduct the current, the separate parts of the mechanism
can be interchanged or otherwise utilised as often as desired.
2. Detachable securing mechanism for reflectors or other shales for electric
incandescent lamps as set forth in Claim 1, in which the connecting and con-
ducting organs b d are so formed as to admit of the employment in this method
of shading of the same type of incandescent lamps as is adapted to the incan-
descent lamp fittings hitherto in use.
בד
L
a
100%
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.