Means for Rendering Windows Draught and Damp Tight.
Year: 1893

page_text: e of Application, 7th Oct., 1893-Accepted, 11th Nov., 1893
COMPLETE SPECIFICATION.
Means for Rendering Windows Draught and Damp Tight.
I, JOHANNES EHRCKE, of Badresch, near Oertzenhof, Mecklenburg-Strelitz, in
the Empire of Germany, Joiner and Carpenter, 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 :-
The object of the present invention is to provide means for rendering windows,
of the character known as French windows, tight against draught and damp.
The invention is illustrated in the accompanying drawings, in which :-
Figure 1 shows, in front elevation, a window frame provided with fittings for
ensuring tight joints at the top and bottom.
Figure 2 is a section drawn on line I-I of Figure 1, showing the window
applied thereto.
Figure 3 is a section drawn on line II-II of Figure 1.
Figure 4 is an elevation of the left casement of the window provided with the
improved fittings.
Figure 5 is a vertical section drawn through the centre bar of the vertical
weather guard.
Figures 6, 7, 8 and 9 are details thereof.
Figures 10 and 11 represent sectional front view and vertical section of details of
the device for lifting the hinges.
Figures 12 and 13 are front view and vertical section of a modified form of the
last named device.
Figures 14 and 15 represent details of another modification thereof.
The central bar a, to which is applied the locking bolt for the two casements A
and B of the window, has a section in the form of a trapeze and is jammed in
between the two casements A and B of the window by means of the arrangement
hereinafter described.
The handle 6 in the centre of the bar a carries at the extremity of its spindle a
Both racks are
pinion c, see Figures 5 and 6, gearing with two racks d and e.
slightly bent at the end and are guided by the bolts f and g, see Figures 5, 7,
8 and 9.
The guides of the bolts and g, see Figures 7 to 9, are adapted in the present
case to the right casement of the window in such manner that when turning the
handle to the left, the bent parts x in connection with h tend to force the middle
bar a away from the two casements of the window, while on turning the handle >> to
the right, the middle bar a becomes tightened between the two casements A and B
and thus excludes any draught.
In the closed position of the window, after having turned the handle b to the
right so as to move the bent parts of the toothed racks d and e in the direction
of the arrows, the portions i of the bolts f and g grip behind the plates k which in
the present case are fastened to the left casement B.
The draught is further excluded at the top and bottom between the frame C and
the casements A and B by means of the following arrangement.
By means of the handles H H, Figures 10 and 11, the eccentrics / may be turned
on a pin m in such a manner as to move, either upward or downward, the leaves or
flaps n of the hinges D, which leaves or flaps are movably fitted in the fittings o of
the window frame.
In order to open the window the handles H are moved downward so as to lift the
hinges and thereby disengage the angle bars p, Figure 5, of the casements A and B
from the corresponding angle bars 7 of the frame C, Figures 1 and 2.
When turning the handles H upwards the bars p grip behind the bars q, which

page_text: latter may be provided with a packing and form a tight joint at the top, while the
bottom joint is obtained by means of the groover formed at the lower part of the
casements A and 13, Figures 4 and 5, fitting over the upper edge of the flat rails,
Figures 1 and 3, fixed to the frame C and thereby forming a tight joint at the lower
end of the window.
Figures 10 to 13 show several forms for the lifting device. The eccentric 1,
Figures 10 and 11, may be replaced by a toothed segment gearing with a
rack m provided on the hinge plate nas represented at Figures 12 and 13,
and a spring clip u may be arranged to hold the handle H' in its lower position.
Figures 14 and 15 show one of the hinges one flap of which is connected to the
window frame and consists of two parts and w which are movably fitted together
so as to allow the window casement to move laterally and to obtain a tight joint at
the sides. Further the pin of the hinge is provided with a so-called bayonet
locking device, y Figure 15, so arranged as to allow the casement to be taken out
only when at right angles to the window frame.
a,
In order to open the window provided with the aforesaid hinges, the handle is
turned in the manner before described so as to disengage the central bar after
which the handles H or H' are turned downward thereby causing the casement to
be slightly lifted on the hinges in order to disengage the hooks i from the plates k
and allow the window to be opened.
When it is desired to close the window the left casement is first closed and then
the right casement is closed against the frame C and, on now turning the handle b
to the left, the bolts f and g engage with the plates k and thereby fasten the window,
while at the same time the top and bottom joints of the window are rendered tight
through the bars p and groover engaging with the bars q and s respectively. It
remains now only to turn the handle to the right so as to lock the window and
at the same time form a tight joint in the centre.
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
clain is:
1. The arrangement for forming tight joints for windows consisting of a central
bar a attached to one of the casements of the window in such a manner as to become
jammed between the said two casements through the action of a handle & in
connection with a pinion e and racks de having bent ends acting upon bolts f
and which are adapted to slide in guides h, substantially as herein shown and
described.
2. In conjunction with the arrangement claimed in Claim 1, the means for
securing tight joints at the top and at the bottom of the casements, consisting of a
device for lifting the hinges by means of excentrics working in suitable slots in
the hinge plates n so as to disengage and engage the casements of the window from
the respective bars at the top and bottom, substantially as herein shown and
described.
3. The modification of the device for lifting and lowering the window casements
consisting of a toothed segment provided with a handle H¹ and gearing with a
rack m', substantially as herein shown and described.
4. In combination with windows of the character herein referred to, in a hinge
composed of two movably connected hinge parts and w for the purpose of enabling.
the window casements to be pressed tightly against the sides of the frame, as also a
bayonet lock y for the purpose of allowing the casements to be lifted out of their
hinges only when opened at right angles to the frame, substantially as herein shown
and described.
Dated this 7th day of October 1893
JOHANNES EHRCKE,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.