Improvements in Means for Ventilating Rooms.
Year: 1890

page_text: Date of Application, 22nd Aug., 1890
Complete Specification Left, 9th May, 1891--Accepted, 13th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Means for Ventilating Rooms.
1 EDWIN GREENWOOD of Spa Street Ossett in the County of York Minister
do hereby declare the nature of this invention to be as follows:-
My present invention relates to improvements in means for ventilating rooms.
It is well known that the usual practice of opening a window in order to
admit air entering and escaping so as to ventilate a room is very objectionable as
it frequently allows too free a passage for the air and thereby creates a draught
thus exposing the occupants of the room to the risk of catching cold the purpose
therefore of my invention is to obviate the draught when the window is opened
for the purpose described and to arrange means whereby a more perfect state of
ventilation is secured to attain which I employ a simple adjustable appliance
which may be easily and expeditiously fitted and fixed between either the upper
sash and the upper part of the frame of window or the underside of lower sash
and the bottom part of the window frame. The said appliance hereinafter referred
to as a ventilator is constructed preferably with two bars of wood or metal one
bar being free to slide upon within or alongside the other and for this purpose I
either make one bar with a dovetailed groove and the other with a corresponding
projection or I arrange both bars with slots or only one with a slot and in each
case I employ a screw or suitable clamp or fastening by which means when the
bars are adjusted so as to fit within the frame of the window they can be securely
fixed in position.
The adjustable bars are bevelled on their upper and lower sides to suit the
taper of the window frame and sash and each said bar is perforated with a suitable
number of tapered holes. The bars may either be tapered horizontally or may be
all one thickness and in order to fix them securely within the window frame I
arrange the outer end of each bar with a wedge shaped slide which is free to
move in a groove made with or fixed to the bar or where preferred each said
outer end of bar may be arranged with a thumb and finger headed screw and
a plate.
In a modification of my present invention I arrange one bar hollow or of a box
form and the other bar I arrange to slide within the same or I arrange the bars of
a channel form in cross section one sliding within the other. Or the said bars
may be in the form of pipes or tubes one sliding within the other and cach suitably
perforated or the bars may be in the form of two wedges sliding one alongside
the other.
The lower side or the upper side or both sides of my improved ventilator may
be constructed with a spiked plate or may have a number of spikes secured
thereto so that when the ventilator is placed in position and the sash brought
with force thereto it becomes more firmly secured in position as will be well
understood.
It will be obvious that where desirable more than two sliding bars may be
employed in the construction of my improved ventilator.
The said ventilator may be of any suitable depth and when so preferred it may
be composed of only one bar of a convenient shape and size and suitably perforated
and it may be arranged with a vertical sliding cover so that the number of
holes exposed for the exit or ingress of air may be varied or the ventilator
entirely closed.
The ventilator may either be fixed between the lower sash and the bottom of
the window or between the upper sash and the top of window but I prefer to
employ two of my improved ventilators to a window one fitted at the top and the

page_text: other at the bottom as by this means the fresh air enters the room by the lower
ventilator and the foul air escapes from the room by the upper ventilator and it
will be obvious that air also passes between the two sashes of the window but as
the current of air is upward draughts are avoided.
The holes formed in the bar or bars are wider at the inside of the ventilator
than on the outside and where preferred the holes may extend obliquely within
the room in the form of short tubes or pipes in order to obviate to a fuller extent
any risk of draught.
Dated this 21st day of August 1890.
H. F. BOUGHTON, M. I. Mech. E.,
Barnsley and Sheffield, Agent.
COMPLETE SPECIFICATION.
Improvements in Means for Ventilating Rooms.
I EDWIN GREENWOOD of Spa Street Ossett in the County of York, Minister
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 present invention relates to means for ventilating rooms.
It is well known that the usual practice of opening a window in order to admit
air entering and escaping so as to ventilate a room is very objectionable as it
frequently allows too free a passage for the air and thereby creates a draught thus
exposing the occupants of the room to the risk of catching a cold the object
therefore of my invention is to obviate the draught when the window is opened
for the purpose described and to arrange means whereby a more perfect state of
ventilation is secured within a room to attain which I employ the appliance set
forth in the accompanying sheet of drawings which is to be taken as a merc
typical illustration of my invention and not as a final form inasmuch as it will be
obvious that the same may be modified in form and construction to suit special
shapes of windows and sashes without departing from the essential particulars of
my said invention.
Fig. 1 is a plan Fig. 2 a front elevation Fig. 3 a back perspective view and
Fig. 4 a cross sectional elevation taken on line A. B. of Fig. 3 of one form of my
improved ventilator.
Fig. 5 is a cross sectional elevation of a window frame and sashes showing how
my improved ventilator is fitted thereto.
Like letters of reference denote corresponding parts in each view.
My improved ventilator. is constructed with two bars C and D the bar D
sliding within the bar C as shown so as to make the ventilator adjustable in
order to fit various widths of casements or frames. The space c¹ formed in the
bar C may be of any suitable form in cross section it only being necessary for
the cross section of bar D. to correspond therewith. The bar D is made with a
slot within which is placed a flanged nut 2 arranged so that the end of a
screw E is threaded therein. The said screw E passes through one side of the
bar C and is arranged as shown so that the bar Cafter the ventilator is adjusted
may be securely clamped or fastened to the bar D. The bars C and D which form
the ventilator to be fitted under the lower saslı arc bevelled on their upper and
lower sides to suit the taper of the window frames and sash. The back part of
bar C is perforated with a suitable number of lateral or horizontal holes c² and the
bar D is perforated with a suitable number of right angled perforations d³. The
outer end of each bar C and D is arranged with a projecting portion or flange c³
and d respectively to which is attached a screw G so that after the ventilator has
been placed in position in the window frame it may be securely held in position as
will be well understood.
My improved ventilator may be of any convenient and suitable depth and where

page_text: preferred it will be obvious that it may be composed only of one bar of the
required length to fit between the frame of window in which case said bar is formed
with a series of right angled perforations.
I prefer to employ two of my improved ventilators to a window one fitted at the
top and the other at the bottom as shown at Fig. 5 as by this means fresh air enters
the room through the perforations of the ventilator situated under the lower sash
and the foul air escapes from the room through the perforations in the ventilator
situated over the upper sash.
I prefer to arrange the perforations of the lower ventilator so that air passes
into the perforations from the outside in a lateral direction and ascends into the
room in a vertical direction and as regarded the upper ventilator the foul air passes
into the perforations in a vertical direction and exits to the outside in a horizontal
direction as shown by the arrows.
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:
1. In means for ventilating rooms the use of an adjustable ventilator constructed
with bars C and D in combination with tapered or right angled perforations c²
and substantially as described.
2. A ventilator arranged to fit securely between the sash and frame of a window
constructed with perforations conducting the air from a lateral to a vertical direction
substantially as described.
3. Fitting between the upper sash and frame and lower sash and frame of a
window a ventilator arranged to be adjustable or otherwise and constructed with
right angled or tapered perforations so as to conduct fresh air from a lateral to a
vertical direction into a room under the lower sash and to conduct the exit of foul
air from a room from a vertical to a lateral direction at the upper sash substantially
as described and set forth at Fig. 5.
OLM 1001