Improvements relating to Curtained Doorways.
Year: 1889

page_text: Date of Application, 26th July, 1:889
Complete Specification Left, 28th Apr., 1890-Accepted, 31st May, 1890
PROVISIONAL SPECIFICATION.
Improvements relating to Curtained Doorways.
I REGINALD HADDAN of the firm of Herbert & Co. Patent Agents of 18 Buckingham
Street, Strand W.C. in the County of Middlesex, Civil Engineer do hereby declare the
nature of this invention a communication to me from abroad by Martin Chotzen of
Breslau in the Empire of Germany, Doctor, to be as follows:-
This invention relates to doorways which in addition to the usual door or double
door are provided with curtains or hangings intended to usually cover the doorway.
Heretofore such curtains or hangings have either been hung upon the door itself or
on a pole fixed on the door and so moving and opening with the door or they have
been hung on the doorway so that they do not move with the door.
The object of this invention is to hang the said curtains to slide on a pole on the
doorway and to connect them with cords to the door and to certain weights so that
they may automatically draw back and uncover and close again when the latter
is shut.
The mechanism by which this is effected comprises five cords with certain pulleys
therefor, two weights and an automatic brake. These are combined so that when a
person wishing to pass to the door releases the brake by hand, one of the weights
draws back the curtain sufficiently to enable the person to reach the handle and so
open the door the opening of the door completes the drawing back of the curtain and
lifts the first weight back into its place where it is locked by the brake. The closing
of the door again enables the other weight to return the curtain back into its position
to cover the doorway.
·Dated this 26th day of July 1889.
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Curtained Doorways.
I REGINALD HADDAN of the firm of Herbert & Co. Patent Agents of 18 Buckingham
Street, Strand London W.C. in the County of Middlesex, Civil Engineer do 'hereby
declare the nature of this invention a communication to me from abroad by Martin
Chotzen of Breslau in the Empire of Germany, Doctor 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 doorways which in addition to the usual door or double
door are provided with curtains or hangings intended to usually cover the doorway.
Heretofore such curtains or hangings have either been hung upon the door itself or
on a pole fixed on the door and so moving and opening with the door or they have
been hung on the doorway so that they do not move with the door.
2
2
The object of this invention is to hang the said curtains to slide on a pole on the
doorway and to connect them with cords to the door and to certain weights so that
they may automatically draw back and uncover the door and close again when the
latter is shut.
The mechanism by which this is effected comprises five cords with certain pulleys
therefor, two weights and an automatic brake. These are combined so that when a
person wishing to pass to the door releases the brake by hand, one of the weights
draws back the curtain sufficiently to enable the person to reach the handle and so
open the door, the opening of the door completes the drawing back of the curtain and
lifts the first weight back into its place where it is locked by the brake. The closing

page_text: of the door again enables the other weight to return the curtain back into its position
to cover the doorway.
Fig. 1 of the accompanying drawing represents in plan and Fig. 2 in elevation a
double curtain in front of a double door. Fig. 3 shows in plan a single curtain in
front of a double door and Fig. 4 a single curtain in front of a single door. Figs. 5,
6 and 7 are details on an enlarged scale.
'
In order to make the view clearer the curtains are omitted from the drawing and
their borders are only indicated by the letters a banded.
The rollers og and i each consist of two separate rollers rotating on a gudgeon
common to both and enclosed by a frame as shown in Fig. 7. e is a single roller
and is arranged on the base plate underneath the eccentric brake the construction of
which will be seen in Figs. 5 and 6 and the purpose of which is to operate upon the
cord 5 which carries a weight q.
With the double curtain a b and c d Fig. 1 attached to rings running on pole tu
the cord 1 is attached to ring c and passes over rollers 9 and i to the point k on the
door and the cord 2 from ring cover pulley f to the ring b. The cord 3 starts at
the ring c runs over roller o to the weight q. The cord 5 which starts in point k and
runs over roller i and g finishes also at the weight q. Lastly the cord 4 goes from
ring b over roller e to the weight n.
The cords 1 and 2 are intended to divide therefore to open, in the directions of the
arrows, the curtains a b c d by the opening of the door 7 (Fig. 1). If one closes the
door again the cord 4 causes the two curtains to move in the contrary direction that
is the curtain-halves close again.
If one wishes to pass the door from the side of the curtain the cord is given a
strong pull, the eccentric brake his thus disengaged, the cord 5 to which the brake
was applied, thus upheld the weight y up to this moment and in consequence thereof
the cord 3 was free from weight.
But by releasing the cord 5 the weight 9 descends and pulls the cord 3 which in
connection with the cord 2 separates the two curtain halves abcd so far in the
direction of the arrows Fig. 1 that one can enter the space between the curtains
and the closed door and thus open the latter. By the opening of the door / the
cords 1 and 2 will open the curtain completely at the same time the weight q is
wound up into its highest position Fig. 6 by the cord 5 being wound up and tensioned
by the door and the brake is applied to the cord 5 by the automatic action of
eccentric brake h. When the door is closed the weight n begins to act; as the
brake is applied again to weight q, the cord 4 closes the curtain again.
It is understood that this device may be also arranged on the right side of the door
passage for the other wing of the door or the arrangement used in Fig. 1, the
point transferred to the other door wing. With the arrangement shown in Figs. 3
and 4 the same device remains except that the cord 2 with roller f and the curtain
half a bis dispensed with and the cord 4 with the roller e is not fastened to the base
plate m of the eccentric brake but is arranged on the other side of the doorway.
The same device may be applied to sliding doors or windows.
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.
The apparatus to be applied to curtains covering doorways and the like consisting
of the cords, 1. 3. 4 and 5 the rollers egi o the weights nq the brake h with single
curtains or with the addition of cord 2 and roller for double curtains the whole
operating together substantially as herein described.
acl 1
1 1000
""
HERBERT & Co.,
18, Buckingham Street, Strand, W.C., Agents to Applicant..