Improvements in and relating to Windows..
Year: 1896

page_text: Date of Application, 18th June, 1895-4ccepted, 1st Aug., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Windows..
I, JAMES RUMGAY, of 54 Lambton Quay, Wellington, in the Colony of New
Zealand, Engineer, do hereby declare the nature of my invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
My invention relates to windows which have sliding sashes and has for its
object to provide apparatus for ventilating a room without causing an unpleasant
or undue draught and at the same time to secure the sashes at any desired height.
in such a way that they cannot be readily opened from outside.
I carry out the object of my invention by providing a ventilator made to fit
freely within the window frame and beneath the lower sash. Air is admitted
through a sheet of perforated material into the ventilator where it may expand
and thence pass through a second sheet of perforated material. The air is thus
checked in its course through the ventilator as the perforated sheets act as baffles
and reduce the force of a strong current of air passing into the room. The
ventilators are movable and. may be made to allow the air to take an upward or
downward direction when entering a room.
In order that the window may be burglar proof whilst my ventilator is in
position I provide fasteners, one of which is fixed on each side of the top rail of
the lower sash. The upper sash carries racks corresponding to the fasteners with
which they engage. To open the window the fasteners are turned aside leaving
the sashes free to move.
In order that my invention may be most easily ascertained I have illustrated the
same on the accompanying drawing, whereon similar letters and figures of reference
indicate similar parts throughout the views.
Fig. 1 is an inside view of a window with the ventilator and fasteners in
position.
Fig. 2 is a section of the same on line A-B Figure 1.
Fig. 3 is a view of another form of ventilator.
The ventilator (a) is made in the shape of an irregular sided box extending
across the window and fitting upon the sill (b) beneath lower sash (c). Air is
admitted through a perforated plate (a2) to the interior of ventilator (a) where it
may expand and thence pass through perforated plate (a) into the room.
Fig. 3 shews a form of ventilator where the air is admitted from below and
passing upwards finally enters the room as shewn by the arrows.
Foul air passes outwards through the space between the sashes, or the upper
sash may be left open at the top for the same purpose.
In order that my invention may be used with safety and burglars prevented
from entering the room whilst the ventilator is in use, I provide a fastener of special
construction.
Spring catches (d) made by preference of hard brass are movable around their
studs (d) upon the upper rail of lower sash (c). The points (d2) of these said
catches spring against and engage with the notches (1) of racks (f) which are
fixed to the side of upper sash (g). When it is desired to open the window,
catches (d) are turned aside as shewn in Figure 1, knobs (d 3) being supplied so
that this operation may be done readily. To enable the catches to keep their
position upon the racks I supply extensions (d 4) to act as guides.
It will be obvious that with a window having a central vertical bar upon its

page_text: upper sash I may fix one of my fasteners thereto instead of one on each side as
above described, and that my fastener, will secure a window when closed.
Having now particularly described and ascertained the nature of my said
invention, and in, what. manner the same is to be performed I declare that what
1 claim is,
1. A movable ventilator for admitting air in an upward direction into a room
substantially as and for the purposes set forth herein.
2. A movable ventilator for admitting air in a downward direction into a room,
substantially as and for the purposes set forth herein.
3. A window fastener constructed arranged and operating substantially as and
for the purposes set forth herein.
4. In improvements in or relating to windows, the combination. of a movable.
ventilator for admitting air in an upward direction into a room with a window
fastener, substantially as and for the purposes set forth herein.
5.. In improvements in or relating to windows, the combination of a movable
ventilátor for admitting air in a downward direction into a room with a window
fastener substantially as and for the purposes set forth herein.
6. The improvements in or relating to windows, constructed arranged and
operating substantially as and for the purposes set forth herein and illustrated on
the accompanying drawings.
Dated this 9th day of May 1896
JAMES RUMGAY.
Haseltine, Lake & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.