Year: 1888

page_text: Date of Application, 6th July, 1888
Specification Accepted, 10th Aug., 1888
I, BORGER WITH MÜNSTER, of Hönefos, Norway, Cashier 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 the kind of windows where the sashes, when opened,
are swung on hinges or pivots and also moved sideways sliding in grooves in the sash
frame.
In the window now to be described the sashes may be swung and moved inde-
pendently of each other, which is of great advantage for windows that open
inwards as the same may then as easily be cleaned or washed on one side as on the
other.
In the accompanying drawings Figures 1 and 2 are horizontal sections through a
window in the closed and open condition respectively. Figure 3 shows the lower part
of the window in vertical section K is the sash frame. RR are the sashes. The
latter are hinged on vertical axles or rods a, which rods at the top and bottom project
into slide-blocks k, serving as pivot rests or bearings for the rods. The said blocks k
are inserted in slide-grooves in the top and bottom frame-piece and are movably
fitted in these grooves. The rods a are parily let into the sashes and held in
position by means of suitable hoops or staples, at the same time serving as hinges for
the sashes.
At the top and bottom, just. below and just above the said sliding block k is a pinion d
keyed to the rods which pinion engages with racks t fastened along the top and bottom
of the sash frame.
It is obvious that by such arrangement of the sashes, the same may be slided side-
ways independently of each other without coming out of their vertical position as the
pinions engaging the racks will make the rod, to which the sashes are hinged move
parallel itself.
When the window is opened fully, both sashes are conveniently placed in the middle
of the window and they may there be secured in this position by means of a hook
that holds them together. When closed, the laterally protruding part of the

page_text: rods a will fit into a groove in the sash frame, whereby a tight joint is produced;
the joints may of course as usually be lined with strips of rubber felt or similar
material.
The above described window may of course also be arranged to open outwardly, but
the advantages are not then so great. It is also evident that the window may be
constructed with any number of sashes, one, two, or more, according to the width of
the window opening.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is:-
A window the sashes of which are hinged on vertical rods or axles, having their
. bearings in guide blocks, that slide in grooves in the top and bottom sash frame, said
rods having mounted on them, near the top and bottom and close to the above named
guide blocks, pinions which engage with racks secured to the sashframes along said
grooves, substantially as and for the purpose specified.
BORGER WITH MÜNSTER.
By Jensen & Son,
77, Chancery Lane, London, W.C.,
Patent Agents.