Improvements in the Construction of Ventilators.
Year: 1896

page_text: Date of Application, 1st Aug., 1896
Complete Specification Left 30th Apr. 1897-Accented. 19th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Ventilators.
I, WILLIAM JAMES Fox of Ryefield Villas, Marple in the County of
Cheshire Buyer, do hereby declare the nature of the said invention to be as
follows:-
My invention has for its object improvements in the construction of ventilators,
used in connection with my former Patent No. 4067 26th February 1895, by
which the ventilators can be easily fixed in their respective positions and the
filtering, disinfecting or odorizing medium be easily replaced.
In making one form of my ventilator for the top or bottom of any ordinary sash
window I form a box or tube of the necessary size and shape, which box or tube is
perforated and has a filtering and disinfecting or odorizing medium, inside it,-as
explained in my previous patent. The box or tube is made of a frame or bead
work of wood or other suitable material, having grooves into which perforated
wood, cardboard, cloth waterproof paper and board;-as for instance the
"Willesden," pegamoid cloth, metal such as zinc or other suitable material, is
placed. At each end a block of wood or other suitable material, is placed and in
suitable positions, inside the hox or tube, if necessary, stays of the required size
which together with the end blocks would give the necessary rigidity to it. The
inner portion inside the room or compartment is made so that it can either slide
out in one piece, or it can be made in parts or sections to slide out from either one
or both ends, to facilitate recharging or changing the filtering, disinfecting or
odorizing material. In other cases small doors may be placed at intervals which
would open by means of hinges or other suitable opening arrangements and fasten
by means of small catches or by simply,-portions fitted in loosely so that they
could be taken out altogether instead of being hinged. I also make the body part
of these ventilators entirely of perforated metal such as zinc or cardboard as
follows:-1 bend and secure the metal or cardboard or other suitable material
around three sides of the wood or other blocks of the required size leaving the
inner side to be closed by a separate piece of perforated metal this separate piece
being secured at each end or at each end and other suitable places by means of
thumb or other suitable screws, springs or catches to enable it to be easily removed
for recharging or refilling with the filtering disinfecting, or odorizing material;-
instead of the front piece being loose I may make them so that the top portion is
loose or a strip of wood or cardboard may be simply screwed or nailed across,
instead of a strip of the metal, where the body is made of metal.
In other cases I may make the body part of these boxes or tubes entirely of
cardboard prepared to resist water or damp or of perforated metal with wood or
other blocks at cach end, and stays as before described; then for the purpose of
recharging with fresh filtering, disinfecting or odorizing material, the tube would
be so made as to open its entire length of inner side as follows:-In the case of
the body part being made of perforated cardboard a strip of metal or other suitable
material bent somewhat in the shape of a reversed Z, would be fastened along one
edge of the cardboard, the other edge would then catch in the under part of the
bent metal strip; in cases where the body part is made entirely of metal the edge
of the metal itself could he bent up to form the catch; thus in both cases the
.

page_text: whole length would be kept fast and retained in this position by means of spring
clips at each end or by any other suitable means; or instead of the metal
opening as described the front portion may be taken off in its entirety as before
described.
Another way in which these boxes or tubes can be made would be to have one
tube with open ends and another with only three sides to slide, one in the other,
the inner tube having stays and end blocks as before explained; this plan would
enable them to be more easily fixed in windows of varying widths.
I also make the ventilator in the form of a drawer, the portion which can be
drawn out, has the one side perforated to correspond with similar perforations in
the case it fits into; but the portion shewing inside the room or compartment
would not be perforated, so that when closed the action of the ventilator is stopped.
This method of making the ventilator allows the current of air to be directed
upwards when the drawer is open and would be especially adapted for a bottom
ventilator, but of course could be used for the top as well. The drawer if made
with an unperforated bottom as a means of forming an upward current would by
reversing and placing such unperforated bottom at the top;-then give the current
of air a downward direction. Instead of a drawer I may use only a front
perforated board, cardboard or metal plate say of a fender shape for the inner
or room side, formed in such a manner as to retain its position securely when
fixed.
To enable users of my ventilators, to entirely close them in inclement weather
I may either attach by suitable hinges, a blank plate of any suitable material, on
the side of the ventilator nearest the interior of the room, in which the ventilator
is placed, this plate can be made to rise and fall at will and kept in position by
means of springs, catches, chains, pins, movable arms or the like. Or I may
provide a loose blank, board or plate to fit inside the tube box, drawer or fender,
thus covering the openings in the ventilator and preventing the current of air from
entering the room; or I may prepare the tube, box, drawer or fender with two.
plates or boards each with similar openings or perforations, and one or both these
plates may be made to slide in either direction so that the blanks in one plate will
cover the openings or perforations in the other and so close or partially the
ventilator if desired. I also make the body part of these ventilators entirely of zinc
or other material in any or all the forms previously described for the cardboard
and if desired, with or without any ornamental beading, or facing the openings for
refilling with filtering, disinfecting or odorizing material, being secured with
springs, spring clips or other suitable contrivances.
These ventilators may have in addition to the end blocks for stiffening the body
part, additional blocks secured to the permanent blocks, by means of a spiral or
other spring or other equivalent to act as a kind of spring buffer to firmly hold the
ventilator in its place and at the same time, will allow the ventilator to be used in
other windows than those for which they were intended; i.e. windows somewhat
wider or narrower, the distending portion being telescopic or in the form of bellows
or other suitable form.
In some cases I make the ventilators by placing thin blocks or stays of wood,
suitable distances apart, or other suitable substances between two strips of perforated
metal, leather cloth, cardboard, paper woolen or cotton cloth, textile material of
any suitable character, waterproofed pegamoided or otherwise; or other suitable
material which would allow a current of air to pass through and fasten by nails,
cement or other suitable means and placing cotton wool or other suitable filtering,
disinfecting or odorizing material between the two, and either close or leave open
the sides, i.e. to the depth of the wood blocks or stays.
A very cheap form and one which would place it within the reach of all; could
be made of perforated metal, leather leather cloth, cardboard, paper woollen or cotton
cloth, textile material of any suitable character waterproofed, pegamoided or
otherwise or other suitable material which would allow a current of air to pass
through. I use these either singly or in conjunction, in such a manner as to allow

page_text: a current of air to enter or leave a room or compartment, so arranged that when
desired such current of air will convey into rooms or compartments, volatilized
disinfectants or odorizers whilst at the same time stopping the entry of snot, smuts,
dust and other impurities. In this form I may make a plate or tray of perforated
zinc or other metal; to which I attach first some open textile material then either
by springs, catches, or any suitable adhering substance a covering either wholly or
partially of felt, baize swansdown, wool, cotton wool, india rubber, cork or other
suitable substance on either one side only or on both sides;-in case of wholly
covering the perforations, such covering could be made to correspond in the
perforations to the foundation plate, or if covered in parts only, perforations in
such parts as desired or perforations may not be needed.
The wool, felt, baize or other suitable filtering material when desired is
impregnated with disinfectant or odorizer which the current of air would diffuse
through the room or compartment. Or instead of a metal plate I may use strips
of any other suitable material named and attach the wool, felt, baize or other
suitable filtering material impregunted if desired with disinfectant or odorizer in a
similar manner to that described for the metal plate form. In this form the
ventilator would allow of the windows being closed by a movement similar to
that of a concertina, as they are attached to either tops or bottoms or middles
of windows by any suitable means of attachment, for instance by adherent
substance, na glue, varnish, cement or the like or by pins, tacks, nails, screws,
springs catches or the like or a combination of such one side being fastened to the
Bash or window rail and the other to the framework or beading round the
window if thought necessary. Or I may attach this form by suspension from
above the window by means of tacks nails hooks, screws, glue varnish, cement
or other suitable method and fasten in like manner the lower portion to the
window sash. In other cases I may make these materials sufficiently rigid so.
as to fix tightly within hooks above the window frame, inserted there, and on
the window sash in ordinary way accompanied by spring catches or other device
for keeping the ventilator in its position, even when desired to draw the window
down, the same purpose can be effected by elastic bands. I may also attach
by similar means simply a strip of coarse open textile or other material impregnated
when desired, with disinfectant or odorizer which will allow a current of air to
pass into the room or compartment but prevent dust and other impurities from
entering and in this form any length required for different width of windows can
be-supplied and readily fixed by any one, and when attached allow the window to
be readily opened or closed without disturbing the ventilator and be shaped and
adapted for either tops bottoms or middles of windows either in houses, carriages
of all kinds or ships or to any parts of rooms or compartments.
I also use felt, baize, swansdown, flannelette flannel fibre or any other suitable
material which has a suitable raised or fluffy surface on one side which can be
sprinkled with liquid disinfectant or odorizer or strewn with such in powder form
and these would be used in their natural form or waterproofed, pegamoided and
perforated or not singly or in conjunction with each other or with any material to
give a stiffness or rigidity to them or simply have two layers fastened together
back to back by sewing or otherwise so as to have two raised or fluffy sides to
hold or retain the liquid or powder disinfectant or odorizer. In cases where this
kind of ventilator is perforated I should attach a thin back in the same way as
before described for metal but of a course or open textile material which would
allow the air to enter but stop smuts, soot, dust, or other impurities.
The ventilators for the middle rails of windows would be made much in the
same way and of the same materials as the others for the top and bottoms, but in
a slightly modified form or shape to adapt them for that purpose.
In cases where the ventilator is being adopted for new buildings and inserted.
in, say one of the outside walls, I make a metal box or partly of wood and partly
of metal having perforations in its outer side, and within this box I place the
disinfectant or odorizer; the part inside the room being so made, hinged or fixed

page_text: that when desired it could be readily adjusted to either direct the current upwards
or to allow any air to be drawn up through the bottom; or in other cases the
inside portion could always be made in one position with a sliding plate so fixed
that it could be casily slid along thus closing up the ventilator, or a plate so fixed
as to work upon a pivot and so direct the current in any direction. Of course
any one of my before mentioned methods of forming my ventilators could be used
in connection with a wall instead of the ones made in the manner described. In
cases where windows are specially made to allow of my ventilators being
permanent the top and bottom sashes may each or either of them be prepared
with an additional rail fixed at a convenient distance from the usual rails at the
top or bottom of windows so as to form an opening in which my ventilator,
constructed in any of the methods herein before described may be placed and kept
in position by a rebate, or other suitable formation on one side and by suitable
catches springs, plates or the like on the other side or in the opening formed as
described, I may on the outer rebate attach a plate perforated or formed with grid
like openings then place in the openings, the filtering and disinfecting or odorizing
medium & afterwards attach a plate perforated or prepared with grid like
openings to the inner side of the opening in such a manner as to be easily detached
for the purpose of refilling and recharging the ventilator which would be formed
in the sash or window itself. The ventilators whether formed in the sash or
previously constructed and placed in the opening described above can be made to
open and close as hereinbefore described. Also when making them permanent
fixtures in windows for builders, when erecting new buildings or altering old
buildings; many of the before described forms of ventilators can be placed at tops
and bottoms and middles of windows or in any one of those positions and can also
by modifications of forms be used in conjunction with other systems of window or
other ventilations; thus giving them the additional advantage of diffusing purified
air into a room where at present they allow all the impurities incident to crowded
towns to enter and so nullify largely the benefits they are intended to confer.
It will be understood that these ventilators can be so made in their shapes or
forms to be applicable to all kinds of windows or lights such for instance as
carriage windows of all descriptions, ships lights or port holes or to any portion of
any existing rooms or compartments or to different windows with slight modifications.
Dated this 31st day of July 1896
I WILLIAM JAMES Fox of Ryefield Villas Marple, in the County of Chester
Buyer 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:-
My invention has for its object improvements in the construction of ventilators
used in connection with my former Patent No. 4067 dated 26th February 1895 by
which the ventilators can be easily fixed in their respective positions and the
filtering disinfecting or odorizing medium be easily replaced.
In order that my invention may be readily understood I have appended hereunto
four sheets of drawings showing several examples of the manner in which I make
my ventilators but it will seen that many modifications both of form or design
can be made to suit varying conditions and taste without departing from the spirit
of my invention.

page_text: existing two sash window and could be used either at the top or bottom of such
or if so desired both at the top and bottom.
Figure 2 is a section of same on line 1. 2.
Figure 3 is an end view of the ventilator.
Figure 4 is a plan of same and
Figure 5 a view with the front piece of perforated metal, cardboard or other
suitable material removed to show the interior in which is placed the filtering
material.
Figures 6, 7 and 8 are broken off elevations of two modifications of this kind of
ventilator showing different ways of obtaining access to the interior for the
purpose of replenishing the filtering, disinfecting or odorizing material.
Figure 9 is a view of a ventilator made entirely of perforated metal, cardboard
or other suitable material,
Figure 11 being a section of same on line 3. 4.
Figure 10 is a front elevation of a ventilator similarly made to Figure 9 but
showing a different mode of keeping the same closed. Figure 12 being a section
of same on line 5. 6.
Figures 13, 14 and 15 are views of other modifications of the way in which [
may make these ventilators.
Figure 16 is a view of a ventilator made in a tray or fender shape Figure 17
being a section on line 7. 8.
Figures 18 and 19 are broken off views of two modifications of the way in which
I may make the ends of the ventilators.
Figure 20 is a broken off view of a cheap way of making the ventilator an
Figure 21 is an end view of same.
Figure 22 is a plan of one way of making a ventilator for the middle rail of a
window.
Figure 23 being a section of same on line 9-10.
Figure 24 is a similar section but showing a modification, Figure 234 being
another modified section.
.:
Figure 25 is front elevation of a ventilator having a revolving shutter.
Figure 26 is a broken off, front elevation of the top portion of a window,
made specially for a ventilator, made according to my invention.
Figure 27 is front elevation of a ventilator made in a circular form, for use
in such shaped windows or lights, such as a ships port holes &c.
Figure 28 is a section of a ventilator, which may be used for railway carriages
or vehicles of any description in which ventilation may be needed.
In making one form of my ventilator for the top or bottom of an ordinary
sash window Figures 1 to 20 and 25, I form a box or tube A of the necessary
size and shape, which box or tube is perforated and has a filtering, disinfecting
or odorizing medium inside it as explained in my previous patent. The box or
tube A, is made of a frame or bead work of wood or other suitable material.
al having grooves b', into which perforated wood, cardboard, waterproofed paper
and board as for instance the "Willesden," "pegamoid cloth," metal such as
zine or other suitable material, B & E is placed. At each end, a block of wood
or other suitable material C, having grooves c¹ to fit over the sash pulleys is
placed. The ends can be of any suitable length so that if necessary they could
be cut off any distance to allow the ventilator to fit into any sized windows. If
necessary, stays d of the required size may be placed in any suitable positions
inside the box or tube A, which together with the end blocks C, would give great
rigidity to it. The inner perforated portion E, inside the room or compartment
is made so that it can either slide out of grooves 6 in one piece or be lifted out
of a rebate b, as in Figure 1, in which case it would be held in position by means
of catches e or some other suitable contrivance; or it could be made in parts or
sections to slide out from either. one or both ends, to facilitate recharging or
changing the filtering, disinfecting or odorizing material. In other cases small

page_text: doors F, as seen in Figure 6 may be placed at intervals, which would open by
means of hiuges 1, or other suitable opening arrangements, and fasten by means
of small catches e, or he simply as portions G, Figure 7, fitted in loosely, so that
they could be taken out all together, instead of being hinged;-being kept in position
by similar catches e¹.
I also make the body part of these ventilators entirely of perforated metal such as
zinc or cardboard A. or other suitable material as follows:-I bend and secure the
perforated metal or cardboard or other suitable material A around three sides of
the wood or other blocks C of the required size, leaving the inner side to be
closed by a separate piece of perforated material, this separate piece being secured
at each end or at each end and other suitable places by means of thumb or other
suitable screws, springs, or catches el to enable it to be easily removed for
recharging or refilling with filtering, disinfecting or odorizing material; instead
of the front piece being loose I may make them so that the top portion is loose, or
a strip of wood or cardboard may be simply screwed or nailed across, instead of
a strip of metal where the body is made of metal somewhat similar to Figure 8;
in this example, however, the separate piece H being shown of wood and sliding
in from the end in a frame work a; but as will be readily understood it could be
made as before explained.
.
In other cases (see Figures 9, 10, 11 and 12) I may make the body part A of
these boxes or tubes, entirely of cardboard prepared to resist damp or of perforated"
metal B, E, with wood or other blocks C at each end and stays d as before
described; then for the purpose of recharging with fresh filtering, disinfecting or
odorizing material the tube would be so made as to open its entire length of inner
side E as follows:-in the case of the body part A being made of perforated
cardboard, a strip of metal or other suitable material J bent somewhat in the
shape of a reversed Z would be fastened along one edge of the cardboard, the
other edge would then catch in the under part of the beat metal strip, J as clearly
seen in Figure 9 and section Fig. 11, in cases where the body part A is made
of metal the edge of the metal itself could be bent up to form the catch, thus
in both cases the whole length would be kept fast and retained in this position by
means of spring clips el at each end or by any other suitable means.
Or the edges
of the perforated inaterial may meet flush, as seen in Figure 10 and section
Figure 11 and be kept closed by spring catches e' or other suitable contrivances
fastened to the stays d. Instead of the metal opening as described, the front
portion may be taken off in its entirety, as before described and shewn by
Figure 1.
Another way in which these boxes or tubes
Le to have one tube K with open ends and
the other, the inner tube having stays d and
this plan would enable them to be more
widths.
can be made, see Figure 13, would
with only three sides to slide one in
end blocks C, as before explained;
easily fixed in windows of varying
I also make the ventilators in the form of a drawer, see Figure 14, the portion L
which can be drawn out has the one side perforated to correspond with similar
erforations in the case it fits into, but the portion 2 shewing inside the room or
compartment would not be perforated, so that when closed the action of the
ventilator is stopped. This method of making the ventilator allows the current
of air to be directed upwards when the drawer is open as seen in Figure 14 and
would be especially adapted for a bottom ventilator; but of course could be used
for the top as well. The drawer L is made with an unperforated bottom, as a
means of forming an upward current; would by reversing and placing such
unperforated bottom at the top, then give the current of air a downward direction.
Instead of a drawer L I may use only a front perforated board, cardboard metal
or other material say of a fender shape, such as shown by Figures 16 and 17 for
the inner or room side, formed in such a manner as to retain its position securely
when fixed. In this shape the portion E, may constitute the filtering material,

page_text: made of any suitable material so as to retain disinfecting or odorizing medium as
hereinafter explained.
In cases where a box such as M Figure 15 fitting in either a window or wall I
form a V shaped receptacle m' having perforations on its side m³, nearest the inlet
of air and either hinge it upon a pivot at the bottom as example 15 or at the top or
middle, according to position or necessity, so that the current of air may be
directed in either a downward or upward direction and when required could be shut
entirely. Figure 15 shows the ventilator open. Another modification to entirely
close them in inclement weather is as follows:-I either attach by suitable hinges
or other means, a blank plate or cover N Figure 25 of metal or any suitable
material in the side of the ventilator nearest the interior of the room in which the
ventilator is placed, this plate N can be made to rise and fall at will and kept in
position by means of springs, chains, pins moveable arms or the like, and may be
opened and shut by means of a pulley and cord or other equivalents. Or I may
provide a loose blank board, plate or cover, to fit inside or outside the tube box or
drawer or fender, thus covering the openings in the ventilator and preventing the
current of air from entering the room. Or I may prepare the tube, box, drawer
or fender with two plates, boards, covers, made of metal or other suitable material,
each with similar openings or perforations, and one or both of these plates may be
made to slide in either direction, so that the blanks in one plate will cover the
openings or perforations in the other and so close or partially close the ventilator, if
desired. In some cases a piece of felt or any other suitable material may be
placed over the perforated part to close the ventilator and be kept in position by
any suitable means.
I also make the body part of these ventilators entirely of zinc or other material,
in any or all the forms previously described for the cardboard and if desired with
or without any ornamental beading or facing a', the openings for refilling with
filtering, disinfecting or odorizing material being secured with springs, spring clips,
catches or other suitable contrivances.
These ventilators may have in addition to the end blocks C, for stiffening the
body part as previously described, additional blocks see Figures 18 & 19.
secured to the permanent blocks, by means of a spiral or other spring c³ Figure 18
or other equivalent, such as shown in Figure 19 where a kind of concertina or
bellows movement is formed, to act as a spring buffer to firmly hold the
ventilator A in its position and at the same time will allow the ventilator to be
used in other windows than those for which they were intended, i.e. windows
somewhat wider or narrower; the distending portion being telescopic or in the form
of bellows c³ or other suitable form.
In some cases I make the ventilator by placing thin blocks or stays of wood
(suitable distances apart) or other suitable substances, between two strips of
perforated metal, leather cloth, cardboard, paper, woollen or cotton cloth, textile
inaterials of any suitable character waterproofed, pegamoided or otherwise, or other
suitable material which would allow a current of air to pass through and fasten by
nails, cement or other suitable means; placing cotton wool or other suitable
filtering, disinfecting or odorizing material between the two and either close or
Icave open the sides, i.e. the depth of the wood blocks or stays.
:
A very cheap form and one which would place it within the reach of all, could
be made in a tray shape such as seen in Figures 16 & 17 and 20 & 21. of a box or
tube shape, in both cases the outside material is the filtering material and in either
case the strips d may or may not be used, but the filtering material would be
fastened in any suitable manner to the blocks C and may or may not be used in
conjunction with further or additional filtering, disinfecting or odorizing medium;
as the outside filtering material may be made of such material as to retain the
disinfecting or odorizing medium itself. Another cheap form could be made of
perforated metal, leather, leather cloth, cardboard, paper, woollen or cotton cloth,
textile materials of any suitable character waterproofed, pegamoided or otherwise or

page_text: other suitable material which would allow a current. of air to pass through; these
I use either singly or in conjunction in such a manner as to allow a current of air
to enter or leave a room or compartment, so arranged that when desired, such
current of air will convey into rooms or compartments, volatilized disinfectants or
odorizers; whilst at the same time, stopping the entry. of soot, smuts, dust and
other impurities. In this form, I may make a plate or tray, practically the same
way as Figure 16. of perforated zinc or other metal, to which I attach first some
open textile material then either by springs catches, or any suitable adhering
substance, a covering either wholly or partially of felt, baize swansdown, wool,
cotton wool, india rubber cork or other suitable substance on either one side only,
or on both sides, in case of wholly covering the perforations, such covering could
be made to correspond in the perforations to the foundation plate or if covered in
parts only, perforations in such parts as desired, or perforations may not be
needed.
The wool felt baize or other suitable filtering material T Figures 16 & 20 when
desired, is impregnated with disinfectant or odorizer, which the current of air would
diffuse through the room or compartment. Or instead of a metal plates E. B,
I may use strips of any other suitable materials named and attach the wool, felt,
baize or other suitable filtering material T, impregnated with disinfectant or
odorizer in a similar manner to that named for the metal plate form. In this form
the ventilator would allow of the windows being closed by a movement similar to
that of a concertina as they are attached to either top or bottoms or middles of
windows by any suitable means of attachment, for instance by adherent substance
as glue, varnish, cement or the like or by pins, tacks nails, screws, springs or the
like, or a combination of such, one side being fastened to the sash or window rail
and the other to the framework or beading, round the window, if thought
necessary. I may also attach by similar means simply a strip of coarse medium or
fine textile or other material impregnated, when desired, with disinfectant or
odorizer, which will allow a current of air to pass into the room or compartment
but prevent dust and other impurities from entering and in this form any lengths
required for different widths of windows can be supplied and readily fixed by any
one, and when attached allow the window to be readily opened or closed without
disturbing the ventilator & be shaped and adapted for either tops, bottoms or
middles of windows either in houses, carriages of all kinds or ships or to any parts
of rooms or compartments.
I also use felt, baize, swansdown, flannelette flannel, fibre or any other suitable
material which has a suitable raised or fluffy surface on one or both sides, which
can be sprinkled with liquid disinfectant or odorizer, or strewn with such in a
powder form and these would be used in their natural form or waterproofed
pegamoided and perforated or not, singly or in conjunction with each other or with
any material to give a stiffness or rigidity to them, or simply have two layers
fastened together back to back by sewing or otherwise so as to have two raised or
fluffy sides to hold or retain the liquid or powder disinfectant or odorizer. In
cases where this kind of ventilator is perforated 1 should attach a thin back in the
same way, as before described for metal, but of a coarse,-medium or fine (as
necessary) textile material, which would allow the air to enter, but stop smuts,
soot, dust or other impurities.
The ventilators for the middle rails of windows would be made much in the same
way and of the same materials as the others for the top and bottoms but in
slighly modified forms or shapes to adapt them for that purpose, as shewn by
Figure 22. In the example of middle rail shown by Figure 22 the perforated
portion E can be taken off in its entirety, but when on, is kept in position by the
catches e' or other equivalents. Figure 23 is a section on line 9-10, showing the
mode of placing the perforated strip in, B at the bottom and E at the top.
Figure 23 being a section of a modified shape the top of the rail being, in this
case, made flat instead of sloping. In some cases the perforated portion may be

page_text: made in one as shown by section Figure 24, the perforated portion B being hent
into a wedge shaped tube having three sides and being fastened in any suitable
manner at the bottom of the L shaped framework P and in like manner at
the top.
. These middle rails would have spaces Q cut out to fit over the mouldings of the
rails of windows, where they were required so to fit and would have the back
portion of the framework extended as shown at R Figure 22 and cut into any shape
to fit into the moulding or grooves of the window.
In cases where the ventilator is being adopted for new buildings and inserted, in
say one of the outside walls, I make a metal box su h as Figure 25 or partly of
wood and partly of metal having perforations in its outer side, and within this box,
I place the disinfecting, filtering or odorizing medium, the part N inside the room
being so hinged, or fixed that when desired it could be readily adjusted to either
direct the current upwards or to allow any air to be drawn up through the bottom
or in other cases this inside portion could be made fast in one position with an
additional sliding plate, so that it could be easily slid along, thus closing up the
ventilator. Any one of my before mentioned methods of forming my ventilators
may of course be used in connection with walls, instead of being made in the
manner described above.
In cases whore windows are specially made to allow of my ventilator being i
permanent, see Figure 26, the top and bottom sashes inay each or either of them,
be prepared with an additional rail S, fixed at a convenient distance from the usual
rails at top or bottoni of window, so as to form an opening in which my ventilator A,
constructed in any of the forms herein described may be placed and kept in position
by a rebate or other suitable formation, on one side and by suitable catches e
springs plates or the like on the inner side, or in the openings formed as described
may on the outer rebate attach a plate, perforated, or formed with grid like
openings, then place in the interior, the filtering and disinfecting or odorizing
medium and afterwards attach a plate, perforated, or prepared with grid like
openings to the inner side of the opening in such a manner as to be easily detached
for the purposes of refilling and recharging the ventilators, thus formed in the
window.
I
The above described methods, would also be very applicable to doors of rooms &
compartments of all descriptions; and these ventilators whether formed in the sash
of the window or in doors, can be made to open and close, as before described.
Also when making them permanent fixtures in windows, doors and walls for
builders, when erecting new buildings or altering old buildings, many of the before
described forms of ventilators can be placed at tops and bottoms and middles of
windows, or in any one of those positions, or in doors or walls and can also by
modifications of forms, be used in conjunction with other systems of window or
other ventilations, thus giving them the additional advantage of diffusing purified
air into a room where at present they allow all the impurities incident to crowded
towns to enter and so nullify largely the benefits they are intended to confer.
Figure 27 is a view shewing the ventilator made for circular windows, fan lights,
ships port holes and such like, the perforated part E may be removed in one piece
or small doors may be fitted in any position to enable the filtering, disinfecting or
odorizing medium to be renewed or replaced. Portions may be hinged round the
outside circumference for the same purpose.
Figure 28 is a sectional view of an example as applicable for carriage windows,
vehicles of all kinds, for shop windows where ventilation is required. In this case
either the perforated part B or E may be hinged or otherwise formed to allow of
access to the inside, the filtering material may be made of asbestos or other non-
inflammable material, to obviate the danger of firing, in the case of railway
carriages.
Many modifications may of course be enumerated to suit different positions or
uses, to which such ventilators are to be applied.

page_text: 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 :-
1st. Improvements in the construction of ventilators formed in the shape of a
tube or box having filtering material on,both sides, in conjunction with a framework
of wood or other suitable material and end blocks and stays, the whole forming a
receptacle which may contain a disinfecting or odorizing inedium, as and for the
purpose herein set forth and shewn upon the accompanying drawings.
2nd. Improvements in the construction of ventilators formed in the shape of a
tube or box made entirely of perforated metal, cardboard, prepared to resist damp,
or, other suitable material, without a framework but with end blocks and with or
without stays, the whole forming a receptacle for containing a disinfecting or
odorizing medium as and for the purpose herein set forth and shewn.
3rd. Improvements in the construction of ventilators formed in the shape of a
tube, or box and having facilities for replenishing or recharging the same with a
disinfecting or odorizing medium, as and for the purpose herein set forth and shewn
upon the drawings.
4th. Improvements in the construction of ventilators having end blocks formed
with grooves and of lengths adapting themselves for adjustment to varying sized
windows as and for the purpose herein set forth and shewn ou the drawings.
5th. Improvements in the construction of ventilators formed in the shape of a
tube or box having moveable receptacles for retaining a disinfecting or odorizing
medium either hinged or operated in such like suitable manner, for adjusting or
directing the current of air or closing the action of the ventilator completely ;-
substantially as herein set forth and shown.
6th. Improvements in the construction of ventilators formed in a drawer shape
for containing a disinfecting or odorizing medium and to direct the current of air
either in an upward or downward direction and to stop the action of the ventilator
at pleasure; substantially as and for the purpose herein set forth and shewn.
7th. Improvements in the construction of ventilators formed in a tube or box
shape of any suitable material, to contain a filtering, disinfecting or odorizing
medium, with a binged shutter for directing the current of air in any direction and
for stopping the action of the ventilator at pleasure, the shutter being operated in
any suitable manner;-substantially as and for the purpose herein set forth and
shewn.
8th. Improvements in the construction of ventilators formed in a tube, box, tray
or other suitable form, and of any suitable filtering material which will contain or
retain a disinfecting or odorizing medium;-substantially as herein before
described.
9th. Improvements in the construction of ventilators in any suitable shape or
form for the purpose of filtering, disinfecting or odorizing currents of air into or
from any chamber or compartment; applicable for dwelling houses buildings of all
kinds, railway carriages and vehicles of all descriptions, ships berths and such
compartments;-substantially as and for the purpose herein set forth and shewn
upon the accompanying drawings.
71
11.100
WILLIAM JAMES FOX.