Improvements in Safety Shutters, Screens, or Curtains.
Year: 1897

page_text: Date of Application, 8th Apr., 1897-Accepted, 29th May, 1897
Improvements in Safety Shutters, Screens, or Curtains.
I, AUGUST EDMUND SCHMIDT, of 6 Halleschestrasse, Leipzig, in the Empire
of Germany, Jeweller, 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 improvements in safety shutters screens, or curtains for
theatres, shop windows, doors, and the like, which safety closures consist of sockets
or rings brought alternately into connection with one another.
The essential feature of the improvement is to avoid the slots which lie between
cach two disks or tube-pieces and form an attacking-point which renders the screen
not quite invincible by burglars.
In order to avoid this imperfection the hitherto used construction of such safety
curtains has been improved as hereinafter specified.
In the annexed drawing
Fig. 1 shows a piece of such a curtain or shutter in front view.
Fig. 2 is a vertical section.
Fig. 3 is a side view.
Fig. 4 is a plan view, partly in cross section.
Fig. 5 is the front view of a form of construction of the safety bars.
Fig. 6 shows the same in plan view and
Fig. 7 in section.
The alternately placed tube-pieces d which may also be formed as rings, are
kept together by means of hollow rods t the interior of which contains the real
connecting rod a.
These hollow connecting rods t already render burglary or injury to the screen
very difficult; but this difficulty is greatly increased by inserting the safety
covering-bars c.
The latter which, can be used in any length, serve to cover completely the
hollows between the tube-pieces lying alongside one another.
The safety covering bars are slid through the tube-pieces and close the
intermediary hollows i as shown in Figs. 1 and 2.
The safety covering bars can be made solid, or hollow or as flat metal-band
only, closed at the ends, that is to say, bent round, or they can also be used as
hollow, triangular rods, according as one or another form may appear more or less
convenient for the purpose of its use.
The safety covering bars which are slid in, in convenient lengths, may also be
connected with the tube-pieces in such a manner that removal of the bars c is not
possible, while however the movability of the whole screen is not impaired.
The solid carrying rods in the hollow connecting-rods & are connected at their
ends by links.
The form and the combination as well as the manner of connection and the size
of the single parts depend upon the purpose the safety-curtain is intended for in
each case.
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 :-
Improved safety shutter curtain or screen consisting of tubes or rings brought

page_text: into alternate connection with one another and constructed in such a manner, that
the tube-pieces d are connected by means of hollow rods t in which are the real
connecting rods a, and have for the closure of the hollows between the tube-pieces
the safety-covering-bars c, by means of which the screen or the like when extended
forms a closed surface.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, Agents to Applicant.