VENTILATING WINDOW BLINDS
Year: 1886

page_text: Date of Application, 3rd Aug., 1888.
Complete Left, 2nd May, 1887.
Complete Accepted, 8th July, 1887.
I, WILLIAM HARTR, Civil Engineer and Architect, County Surveyor of the County
Donegal Office Londonderry Ireland do hereby declare the nature of my invention
for VENTILATING WINDOW BLINDS to be as follows:-
:―
That I provide for the Ventilation of rooms while allowing the use of Window
blinds at the same time.
The importance of this invention lies in affording proper Ventilation to all rooms
by opening the windows above and at the same time shading the windows with
ordinary blinds.
At present when a window is lowered from the top and that the blind has to be
lowered to shut out the sun or light the blind stops up the space so opened for
ventilation just as the sash did before it was lowered. This is an obvious and most
serious defect in all rooms and particularly in Hospitals, Sick rooms, and Bed and
other rooms when it is necessary to shade the windows and Ventilate at the same
time.
My Invention consists in,
First In hanging the blind on to the top of the sash where the roller rests upon
brackets. When the sash is lowered the blind roller goes with it until it reaches the
required limit for Ventilation from the top. It there unships itself when it is caught
up by, and supported upon, two other bearings fixed to the window casing instead of
the sash-The sash may then be lowered to the bottom if required-When the sash is
raised again, it lifts the roller, in passing, off the lower bearers on to the Sash
Brackets and carries it up with it-The blind itself is rolled or unrolled in the
ordinary way-The space left above unshaded at the top of the sash when opened
above for Ventilation will not allow sunlight to strike into the room there.
Thus Ventilation can be provided for from the smallest opening up to the desired
limit.

page_text: Secondly-I effect the same purpose by having the blind roller attached in the usual
place to the saffit of the window case with springs or balance weights or the like.
Then by pulling a bridle, I can lower the roller and blind from the top independant
of the sash, to the required limit, and then upon releasing the bridle the roller would
be raised up again.
Thirdly Another means by which I effect similar Ventilation is to cut one or
more spaces out of the top of the window-blind next the roller, which in this case
would be hung in the ordinary way as at present independant of the sash; the lower
part of the blind can then be looped up, or the whole blind be worked by a roller
folding from the bottom.
What I claim for my Invention in all cases is, that I leave a free space at the top
of the sash for Ventilation which is not obstructed by the window blind, but which as
now used, practically stops the Ventilation when it is attempted by lowering the
windows, and this Invention is capable of being easily and cheaply applied to all
existing windows.
121
T 1
1000
WILLIAM HARTE,
C.E. & Archt., &c.

page_text: COMPLETE SPECIFICATION.
Ventilating Window Blinds.
I WILLIAM HARTE, Civil Engineer and Architect, County Surveyor of the County
of Donegal Office Londonderry Ireland, 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 Invention consists of a pair of brackets supporting the ends of fittings of
window blinds when by the lowering of the window sash the blind also is lowered to
any desired point giving ready ventilation over the window blind from a fraction of
an inch to the space of a whole open sash while the blind at the same time can be run
up or down to act as a sunshade as required.
Instead of a cold and dangerous blast being sent down under the blind when the
window is opened at present, causing the blind to flap and make a noise, the cool air
is sent up to the ceiling the blind remaining at rest.
When the blind or fitting gets disarranged as often happens it can be brought down
within reach of the hand be rearranged or repaired and being simply laid on the
brackets can be raised to its place as before without having recourse to a step ladder
to mount to the top of the window for perhaps some trifling readjustment.
It possesses the advantages of-a-perfect simplicity the mountings being very few
and small.
Fig. 1 Section through Sash-shows, 1, a cross bar running accross the top or
head of the window and free to move up or down between the parting slips a, a where
5 the lower sash slides up or down. It has a notch in each end so as to pass over the
sash cord of the lower sash.
2-Shows the end fittings of an ordinary blind roller permanently attached to the
cross bar 1.
3-Is a bracket (one at each end of roller) to pull out or push back, as required,
O with a spring, and upon which the roller or blind rests and which bracket is inserted
in the sash 5. 5.

page_text: Fig. 2 Section shewing Automatic bracket-Is the same as the last except that
instead pulling out or pushing in, the bracket 3 with the hand, it is always kept
pressed outwards by the spring acting automatically; and on pulling up the lower
sash L the sash closes it while passing the upper sash U.
A third form is the simple bracket, rigidly fixed into the upper sash same as 3 but
not folding back, but acting in the same way in supporting the roller.
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 I claim is
The invention of the brackets and their attachment to the window sash as herein
before described and upon which brackets the window blind or roller or fittings rest
and whereby the advantages claimed for the invention are secured.
And I claim the right to alter or vary the shape of said brackets to meet the
different circumstances of different windows in general accordance however with the
foregoing.