Improvements in and relating to Roller Shutters for Shop Windows and Doors.
Year: 1896

page_text: Date of Application, 6th Aug., 1896-Accepted, 3rd Oct., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Roller Shutters for Shop Windows
and Doors.
I, PHILIPP ZINK of 89-91 Breitestrasse Köln in the German Empire,
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 :-
This invention relates to roller shutters such as are commonly used for shop
windows and doors, and its object is to provide means for preventing such shutters
accidentally becoming unrolled or falling down.
In carrying this invention into effect I interpose into the path of the shutter a
convenient stop or pin, preferably arranged so as normally to project into the path
when the shutter is raised. Before the shutter can fall or be lowered the pin or
stop has to be removed.
The accompanying drawings illustrate different methods of carrying this
invention into effect.
Figures 1 and 2 illustrate at right angles to each other a form of stop which
acts by gravity.
Figures 3 and 4 are representations of a stop which is controlled by a flat
spring.
Figures 5 and 6 show a stop controlled by a helical spring.
In all the figures A indicates the path of the shutter or a groove in which one
edge of the shutter runs.
In the modification illustrated by Figures 1 and 2, C is a recessed casing
mounted behind the groove A and held in place by the screws c c. Pivoted within
the casing is a stop or the like B capable of assuming either a vertical position or
the horizontal position shewn in the figures. The stop is so pivoted or weighted
that its normal position is as shewn in Figure 2 where it projects into the path A
to prevent the descent of the shutter. If the shutter is to be lowered the stop B is
moved into a vertical position out of the path. This movement of the stop may be
accomplished by lifting it from outside or by providing an extension from its axis
with a key or the like which may be operated from the interior of the shop. This
form of stop is simple and trustworthy and has no springs or the like to break or
get out of order.
In the modification illustrated in Figures 3 and 4 the stop is in the form of a pin
attached to one end of a flat spring E, the other end of which is secured to the
plate or shop front F. The pin D normally projects across the path or groove A
and it or the spring is provided with a ring G or other convenient handle by means
of which it may be withdrawn when the shutter is to be lowered.
In the further modification shewn in Figures 5 to 6 the. stop consists of a pin H
contained within a casing K. Within the casing and surrounding a reduced part
of the pin is a helical spring J whose tendency is to keep the pin constantly within
the groove A. The pin H is furnished with a handle or loop L by which it may be
withdrawn when desired. k k are screws by means of which the casing K is
secured in place.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A stop for use with roller shutters, consisting of a pin or the like which is

page_text: automatically placed in the path of such a shutter to prevent its accidental fall or
descent, constructed and arranged substantially as herein before described and as
illustrated by the accompanying drawings.
2. A stop for roller shutters, consisting of a plate or the like pivotted so as to
automatically fall into the path of such a shutter, substantially as and
for the purpose hereinbefore described and as illustrated by the accompanying
drawings.
3. A stop for roller shutters consisting of a spring controlled pin constructed
-arranged and operated substantially as and for the purpose hereinbefore described
and as illustrated by the accompanying drawings.
W. E. HEYS & SON,
Agents for the Applicant.