Concave Mirror or Glass Reflector to be used in connection with Lamps, Lanterns, and the like.
Year: 1893

page_text: Date of Application, 18th Dec., 1893-Accepted, 24th Feb., 1894
COMPLETE SPECIFICATION.
Concave Mirror or Glass Reflector to be used in connection with
Lamps, Lanterns, and the like.
I, PAUL HARTZENDORFF, of 5, Fürsten Strasse, Berlin, Kingdom of Prussia,.
German Empire, Manufacturer, 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 the combination of concave glass-mirrors or concave
glass-reflectors with settings, for the purpose of rendering said mirrors or reflectors.
unbreakable, and the invention proper consists in connecting the two parts in
question ie. the concave glass-mirror or reflector and the setting in such a manner,
that the former may fall in any position from a comparatively great height on the
ground without getting broken thereby.
I have shown one mode of construction of my unbreakable concave mirror or
reflector in the accompanying drawing, in which :
Fig. 1 shows such a mirror or reflector in front-view and Fig. 2 a cross-section
through the same.
The concave mirror or reflector a represented as an example is of circular shape,.
and is provided on its convex side with the setting 6, the edge or rim b¹ of which
gripes over the edge or rim a¹ of the mirror or reflector in such a manner, that both
parts are securely connected with each other. I do not confine myself to the exact
mode of construction shown in the drawing, nor to the configuration of the mirror
or reflector and of that of its setting, but I may unite concave glass-mirrors or
reflectors of any shape and size with settings of any configuration, provided the
latter be so as to protect the mirror or reflector in the desired way.
Concerning the materials to be used for the setting I prefer to employ first of
all metals, but I may use also ebonite, celluloid, vulcanite-fibre, and similar
stuffs.
Having now particularly described the nature of my said invention, and in what.
manner the same is to be performed, I declare that what I clain is :-
:-
1. The combination of a concave mirror or reflector, with a setting adapted to
protect the mirror or reflector against breakage, substantially as described.
2. The combination of a concave glass-mirror or reflector, with a setting adapted
to prevent the mirror or reflector from getting broken by a blow or fall, substantially
as described.
3. The combination of a concave glass-mirror or reflector, with a setting covering-
or embracing the convex side of said mirror or reflector, said setting being of a
configuration adapted to protect the mirror or reflector against breakage or to
prevent it from getting broken by a blow or fall, substantially as described.
4. The combination of a concave glass-mirror or reflector, with a setting
covering or embracing the convex side of said mirror or reflector, and holding the
latter by its rim or edge, said setting being of a shape and configuration corre-
sponding to that of the mirror or reflector, and being adapted to protect the mirror
or reflector against breakage or to prevent it from getting broken by a blow or
fall, substantially as described.
Dated this 16th day of December 1909
PAUL HARTZENDORFF,
By Robert Deissler,
38, Alexander Strasse, Berlin, C., Germany, Agent for the Applicant.