Improvements in and in the Construction of Ventilators.
Year: 1898

page_text: Improvements in and in the Construction of Ventilators.
I, SAMUEL SAUNDERS, of St. Mary's Heating Apparatus Works, 93 & 95, Upper
Moss Lane, Hulme, Manchester, in the County of Lancaster, Heating and Ventilating
Engineer, do hereby declare the nature of this invention to be as follows:-
My said invention has reference to improvements in ventilators, and relates more
particularly to the so called inlet ventilators used to admit air to the interior of public
buildings, dwelling houses and the like.
These inlet ventilators usually consist of a metal framework let into the wall, such
metal framework carrying a hinged flap provided with side shrouds, the side shrouds
emerging with the flap from the interior of the framework according as the ventilator
is opened to a greater or less extent.
Although extremely simple and efficient these.ventilators together with the interior
of the aperture in the wall to which they are fixed are apt to become charged or
choked with dust and the like, so that they are rendered objectionable or inoperative
until such time as the collected dust and foreign matter is removed. Owing to the
construction and position of the ventilator and the narrowness of its outlet, it is often
a matter of some difficulty to remove the collected dust and the like from the body of
the ventilator and the aperture in the wall, and the principal object of my invention
is to overcome this difficulty.
To this end I make the movable flap and side shrouds readily detachable from the
fixed framework of the ventilator.
In one type of ventilator I provide a rectangular metallic frame, adapted to be let
into a gap in the wall as is usual, and formed with a suitable rebate. The movable
flap and side shrouds are so constructed as to allow of their being readily applied to
and removed from such framing.
The side shrouds, which are attached to the movable flap, are cut away at their
lower ends so as to form bearings capable of sitting on a suitable part or parts whilst
the upper edges or tops of the shrouds are formed with gaps, which gaps are made up
at the required times by chocks carried on pivotted stops.
In applying such a flap and side shrouds to the framing, the stops are raised with-
drawing the chocks from the gaps, the shrouds and flap lifted a little so that the
upper rebate occupies such gaps whereupon the bearings on the lower ends may be
dropped down on to the lower rebate upon which they are intended to work and the
parts are in position. The pivotted stops are now turned down so that the chocks
fill up the gaps, locking the flap and shrouds securely to the framing so that it is
impossible for the two parts to become accidentally disconnected. To disconnect the
parts a reversal of the method above outlined is necessary.
The flap and shrouds may be otherwise pivotally connected to the framing than by
bearings sitting on the rebate and I do not confine myself in this respect.
In order to direct the incoming current of air well into the room, and to prevent
the same creeping up the wall and leaving a dusty track, I propose to fix one or more
deflectors or baffle plates between the side shrouds, the tendency of the plate or

page_text: plates being to guard the wall from upward gusts of dust laden air. The metal flap
and framing may be suitably ornamented.
In some cases in order to improve the appearance of the ventilator front and to
make it harmonise with the interior fittings of the room, I construct the same partly
of wood such as mahogany and the like.
To facilitate the putting together of parts, I propose to screw a suitable wooden
panel to the face of the movable metal flap, and to carry the wooden frame
surrounding the let-in framing of the ventilator, on a light metallic structure secured
to the let-in framing by screws.
If deemed desirable I may provide the ventilator with a suitable wire gauze screen
arranged in any suitable position.
Improvements in and in the Construction of Ventilators.
I, SAMUEL SAUNDERS, of St. Mary's Heating Apparatus Works, 93 & 95, Upper
Moss Lane, Hulme, Manchester, in the County of Lancaster, Heating and Ventilating
Engineer, 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 and accompanying drawings :-
My said invention has reference to improvements in ventilators and relates more
particularly to the so called "quadrant" inlet ventilators used to admit air to the
interior of public buildings, dwelling houses and the like.
These inlet ventilators usually consist of a metal framework let into the wall, such
metal framework carrying a hinged flap provided with side shrouds, the side shrouds
emerging with the flap from the interior of the framework according as the ventilator
is opened to a greater or less extent.
Although extremely simple and efficient, these ventilators (together with the interior
of the aperture in the wall to which they are fixed) are apt to become charged or
choked with dust and the like, so that they are rendered objectionable or inoperative
until such time as the collected dust and foreign matter is removed.
Owing to the construction and position of the ventilator and the narrowness of its
outlet, it is often a matter of some difficulty to remove the collected dust and the like
from the body of the ventilator, and the aperture in the wall, and the principal object
of my invention is to overcome this difficulty.
To this end I make the movable flap and side shrouds hereinafter termed the
"valve," readily detachable from the fixed framework of the ventilator.
My invention will be clearly understood from the following description when read
in conjunction with the annexed sheet of drawings.
In the said drawings.
Fig. 1 is a perspective view of a quadrant ventilator having a readily removable
valve and constructed in accordance with my invention.
Fig. 2 is a sectional view of an applied ventilator, the valve being shown open.
Fig. 3 shows a sectional view of the ventilator with the valve closed.
Fig. 4 shows the method of disconnecting the valve from the fixed framework.
Fig. 5 is a detail view.
Figs. 6 and 7 represent a modification.

page_text: Figs. 8, 9 and 10 show the parts of my improved ventilator fitted with wooden facings
to enhance their appearance.
In the type of ventilator shown in the drawings I provide a rectangular metallic
frame a adapted to be let into a gap in the wall b as is usual and formed with a
suitable rebate a¹. The movable flap and side shrouds c¹, which form part of the
"valve "c, are so constructed as to allow of the "valve" being readily applied to,
and removed from such framing.
The side shrouds c¹, which may be attached by screws or rivets c² to the movable
flap c³, are cut away at their lower ends so as to formn bearings c* capable of sitting
on a suitable part or parts, such for instance as the rebate along the bottom of the
frame, see Fig. 3, whilst the upper edges or tops of the shrouds are formed with
gaps which gaps are made up at the required times by chocks or projections co
carried on pivotted stops c7.
In applying such a valve to the framing, the stops c' are raised withdrawing the
chocks c from the gaps c³, the valve lifted a little so that the upper rebate a¹ occupies
such gaps, as clearly shown in Fig. 4, whereupon the bearings et formed at the lower
ends of the side shrouds may be dropped down on to the lower rebate a¹, upon which
they are intended to work, and the parts are in position. The pivotted stops c7 are
now turned down so that the chocks c fill up the gaps c, locking the "valve "
securely to the framing so that it is impossible for the two parts to become
accidentally disconnected. To disconnect the parts, a reversal of the method above
outlined is necessary.
up the
gaps
in
The pivotted stops carrying the chocks or projections which make
the side shrouds c¹ are more clearly seen in the detail view Fig. 5.
As a modification, the flap c³ may be formed with or have attached thereto a pro-
jecting part d, which would bear against a ledge formed on the framing and so act as
a pivot, as is indicated in Figs. 6 and 7.
In order to direct the incoming current of air well into the room, and to prevent
the same creeping up the wall and leaving a dusty track, I propose to fix one or
more deflectors or baffle plates e, between the side shrouds, the tendency of the
plate or plates being to guard the wall from upward gusts of dust laden air.
When the ventilator is fully open the baffle plate e would preferably stand out
beyond the face of the wall.
The metal flap and framing may be suitably ornamented.
If deemed desirable I may provide the ventilator with a suitable wire gauze
screen g, arranged to filter the incoming air, such screen resting on ridges gl cast on
the inner faces of the side shrouds of the "valve."
In some cases, in order to improve the appearance of the ventilator front and to
make it harmonise with the interior fittings of the room, I construct the
same partly of wood, such as mahogany or the like, as is indicated in Figs. 8,
9 and 10.
To facilitate the putting together of the parts I propose to screw a suitable
wooden panel p to the face of the movable metal flap c³ (see Fig. 8), and to carry
the wooden frame h', which would surround the let-in framing a of the ventilator,
on a light metallic structure i secured to the let-in framing a by means of screws
(see Figs. 9 and 10).
Ventilators provided with movable valves as herein before described, are not only
much more readily cleaned and inspected, but are more efficient and more easily
applied than those heretofore in use.
It will be obvious, that when the valve c is in position in the framing, and
the pivotted stops c¹ are turned down, the in and out movement of the valve
necessary to regulate the aperture of the ventilator, is in no way interfered with.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1) In quadrant inlet ventilators, arranging the "valve" to sit on, and work against

page_text: a'rebate or the like in the framing, and forming the side shrouds of such "valve"
with gaps c³, closed at the required times by projections or chocks carried by hinged
or pivotted stops, so as to permit of the "valve" being readily applied and
removed, in the manner, for the purposes, and substantially as herein before described
and shown.
2) In quadrant inlet ventilators of the indicated type, the deflecting or baffle
plate e carried by and moving with the "valve" and designed to prevent the incoming
air creeping up the wall when the ventilator is open, substantially as described
and shown.
For the Applicant,
E. K. DUTTON & Co.,
Chartered Patent Agents, 5, John Dalton Street, Manchester.