Improvements in Sliding Windows.
Year: 1899

page_text: Date of Application, 4th Mar., 1899-Accepted, 8th Apr., 1899
COMPLETE SPECIFICATION.
Improvements in Sliding Windows.
I, HEINRICH NIEDERLÄNDER, of Uferstrasse, No. 80, Parz, Koln a/Rhein, in the
Empire of Germany, Master Joiner, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
This invention has reference to and consists of certain improvements hereinafter
described, in connection with sliding windows, and more particularly such sliding
windows as consist of two movable halves.
According to this invention, in a window of the type referred to, the lower
larger half is adapted to be moved both upwards and downwards through the
window sill. It is, therefore, in such a window, important that, when closed,
the window should be draught and water tight; and this is attained by a slide
provided below the lower window sill, upon which the frame of the lower larger
half of the window will rest when closed; whilst above, where the two frames
of the two halves of the window overlap each other, a plate is provided which
will turn up on hinges, and which will rest on the edge of the frame of the upper
window, and also close the slit or opening which exists there. This board or
plate, which is made to turn upon hinges, will, of its own accord, raise. itself.
when the lower half of the window is pushed up; and when same is lowered, it
will always rest again on the upper frame, and close the slit or opening. It will
be well to arrange, on the lower outer window sill, a ledge, upon which the
slide, previously mentioned, will rest, and to then cover the ledge by means of
hollow beading, in such a manner that a space is left between the ledge and
the beading for the water condensing on the windows to collect in. The water
is then carried off to the outside through channels provided in the beading.
The frames of the two sliding halves are guided between ridges at the sides,
the inner ridges for the lower, larger movable half of the window being so made
up to the height of that half of the window, that they can be removed; whereas
for the upper, smaller half of the window the inner guiding ridges are provided
only in the upper part of the window frame; and are entirely absent in the
Lower part. The object of these arrangements is to render it possible to take out
the halves of the window, into the interior of the room, for the purpose of
cleaning the windows. For this, it is only necessary to take out the removable
idges, and then the lower larger half of the window can be taken out without
further manipulation; whilst, to take out the upper smaller halves of the win-
dows, it is only necessary to push up the lower half; and thereupon to pull down
the upper half, then simply taking out the latter.
The invention is illustrated in the annexed drawings, in which Figure 1 shews
the invention in vertical section, and Figures 2 and 3 shew it in horizontal
sectional plan.
As already mentioned, the window consists of two sliding halves, viz.; the

page_text: upper smaller half a, and the lower larger half b. The frames of these half
windows are guided between ridges, in the window frame proper. The ridges c c
and ledge d serve for guiding the lower larger half b; whilst the half a is guided
exclusively in the ledge d. When both halves of the window are closed, as seen
in Figure 1, there is an air and water tight joint at the bottom sill g, by means
of the half b-which can be pushed both upwards and also downwards through
the window sill resting on the slide h arranged underneath the sill:-
At the top, where the two frames mutually overlap, the slit or opening formed
between them is covered by a board i which will turn up on hinges, such board
or plate being. fastened to the cross piece, k. The board i can move quite clear
of the part 6 when the latter is pushed up, ledge d being provided with incisions m
for that purpose.
In order to render it-possible for the water condensing on the window, to be
carried off, in spite of the air and water tight joint, the outer half gl of the
window sill carries, a ledge o, upon which the slide h rests when closed. This
ledge o is covered by a beading p, in such a manner that sufficient space remains
between both for the water to collect there. By means of channels s in the
beading, the water then flows off to the outside,
"
Parts of the guiding ledge c are so made, that they can be taken out, in
order to enable the part 6 to be taken out of the whole window frame into the
interior of the room, for the purpose of cleaning. Moreover, part of the
ledge.d does not go right down to the bottom, as will be seen from Figure 1, in
order that part a may also be taken out, and into the room.
.
1
In order that, in connection with this whole arrangement, double or gauze
windows may easily be inserted without special appliances, ledges t are provided,
between which the double or gauze window, in its frame, is placed, and in connec-
tion with this, the ledges d, arranged on the inside of the ledges t, may suitably
be used as jambs for these gauze windows.
It should be mentioned that, to clean a window of this kind, it is not necessary
to climb on to the window-sill.
It should also be pointed out that by means of a simple lock, arranged on the
inner window-sill in the middle of the window, the window may be opened to
any height, whereby it is rendered impossible for a thief to get in.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. The improvement in sliding windows, comprising upper and lower sliding
sashes, consisting of the arrangement and combination substantially as described,
by which the lower half is adapted to be moved downwards through the sill of
the window frame, as well as upwards above it, and the frame and sill rendered
air tight.
2. In a sliding window having vertical sliding upper and lower sashes a and b,
the combination with the lower sash 6 of the outer sill g¹, a ledge o, a sliding
sill board directly under the lower bar of the sash b, and resting on the ledge o,
and the beading board p covering the said ledge; substantially as set forth.
3. In a sliding window having vertical sliding upper and lower sashes a and b,
the lower half of which is adapted to move downwards through the sill of the
window frame as well as upwards; a slide h below the lower frame g; a fixed
upper guide spline c; a lower half guide spline and the partial guiding
slide. d for guiding the upper sash. a, the lower part of which is absent in the
lower part of the frame; substantially as and for the purposes set forth.
4. A sliding window consisting of two sliding sashes a and b, the lower half
of which (b) is adapted to be moved downwards through the sill of the window
frame as well as upwards; a slide h below for making the joint of the lower
sash and sill air tight below; a hinged plate i for making the upper part of said
,

page_text: sash air tight above; and guides t on the outer part of the frame in front of
the sliding window sashes for receiving a gauze window frame; substantially
as set forth.
Dated this 3rd day of March 1899
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.