Improvements in Arrangements or Apparatus for Ventilating Halls, Rooms, Ships, or other Interiors, and Baths, Sinks, and the like.
Year: 1889

page_text: Date of Application, 1st June, 1889
Complete Specification Left, 1st Mar., 1890-Accepted, 5th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Arrangements or Apparatus for Ventilating Halls,
Rooms, Ships, or other Interiors, and Baths, Sinks, and the
like.
I, DAVID PRENTICE MENZIES of 106 Elliot Street, Glasgow, Lanarkshire, Ventilating
Engineer and Founder, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object to provide arrangements or apparatus for securing
efficient ventilation in halls, rooms, ships or other interiors; the invention being
also applicable for ventilating baths, sinks and the like.
In carrying out my invention, I provide a ventilating shaft which may be fitted
through the ceiling or roof, or through the wall or in other convenient situation in
the hall, room or other interior. On top or at the outer end of this shaft 1 preferably
mount a ventilator somewhat similar in construction to that described in my prior
Specification No. 4444 of 1885. In the ventilator as therein described, the air
ascending or being drawn up the shaft is allowed to escape through two passages
made in the ventilator at right angles to one another. Under my present invention
I fit in the centre, or at other part, of these cross passages wind deflector plates
which prevent the wind blowing down the shaft and causing down draught. A single
plate may be fitted in each passage, or two or more plates may be so fitted. Instead
of having only two passages in the ventilator, I may use more than two. To cause
a strong up draught I may fit a steam jet arrangement in or in connection with the
ventilating shaft. This arrangement consists of a coil pipe or a small boiler which
has a steam jet nozzle fitted on, or in connection with it.
Water to be converted into steam within the coil or boiler is supplied from a small
cistern or tank, which is preferably supplied with water from the main. A ball cock
or float valve is or may be fitted in the cistern for automatically regulating the water
supply when it is supplied from the main.
The coil or boiler is or may be heated by one or more gas burners, preferably
bunsen burners, at its under side. The gas burner or burners is or are by preference
ignited by means of an electric spark caused by passing an electric current through
negative and positive wires having platinum or other terminals just above the top of
the burner or burners.
Instead of heating the coil or boiler by gas jets as above described the heat may
be generated by a spirit or other lamp. On top of the water cistern or tank a cover
having a spout or funnel which is led into the ventilating shaft, for carrying off any
steam which may be generated within the tank, is or may be provided.
The steam generated in the boiler or coil issues out of the nozzle, which is in or
led into the ventilating shaft, in a jet which causes a vacuum in the shaft and so
creates an up draught for drawing off vitiated or foul air from the interior to be
ventilated.
When ventilating baths, sinks or the like the foul air is conducted by a pipe from
the trap at the underside of the bath or sink to the ventilating shaft where the suction
caused by the steam jet or heated air from the gas burners or lamp draws off the
foul air.
If desired, when the steam boiler or coil is used for ventilating baths, the coil or
boiler and heating appliance may be enclosed within a casing having a funnel leading
the heated air to the outer atmosphere, this funnel may be used for drawing off the
foul air from the trap or from the bath room. In this case the hot water from the
coil or boiler may be supplied to the bath.
To prevent down draught at any time a valve box or air trap may be fitted at the

page_text: under end or other part of the ventilating shaft having valves which normally remain
open but close on the slightest down draught. Or, if desired the valves may be fitted
in the shaft itself.
The vitiated air may be drawn off from the hall, room or other interior by one or
more openings male in the ceiling which lead to the ventilating shaft.
In some cases the steam coil or boiler arrangement may be dispensed with and
the
gas jets or lamp he used in conjunction with the ventilator for creating an up
draught.
Instead of using a ventilator of the construction herein before described on top of
the shaft I may use a ventilator of the same construction as that described in my
prior Specification No. 13099 of 1887.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Arrangements or Apparatus for Ventilating Halls,
Rooms, Ships, or other Interiors, and Baths, Sinks, and the
like.
I, DAVID PRENTICE MENZIES, of 106 Elliot Street, Glasgow, Lanarkshire, Ventilating
Engineer and Founder, do hereby declare the nature of this invention and in what
manner the same is to be performned, to be particularly described and ascertained in
and by the following statement :-
This invention has for its object to provide arrangements or apparatus for securing
efficient ventilation in halls, rooms, ships or other interiors; the invention being also
applicable for ventilating baths, sinks and the like.
And in order that my said invention may be properly understood I have hereunto
appended two explanatory sheets of drawings whereon,
Fig. 1 represents in vertical section my improved ventilating arrangements fitted
in the roof of a hall or building.
Fig. 2 is a cross section on the line x-x of the ventilator, fig. 1.
Fig. 3 shows in section a ventilating arrangement projecting through the side of
a wall.
Fig. 4 shows in part section a bath with ventilating arrangement fitted
thereto.
Fig. 4 is a detail sectional view of part of the bath, fig. 4.
Referring to fig. 1,
a is the ventilating shaft or funnel which is fitted through the ceiling cof the room
hall or other building and through the roof b. The vitiated air from the room, hall or
other interior enters the shaft a at o, or instead of having the air entry at o it may be
through the small cone shaped tubes o' which are connected with the shaft a by the
pipe or duct o². From the room or interior the vitiated air passes into the valve
box B, which has, or may have, air directing plates N in it. There is also fitted in the
box B two or more valves J made of light material in order that they may remain
normally open but so that on the slightest down draught they will close and so prevent
the down draught passing into the room or other interior. To prevent the valves
moving out of place pieces of perforated metal or gauze K are fitted in the box B.
If desired at any time the box B may be entirely closed by means of the valve L
which normally remains open, as shown, but may be closed at any time by pulling the
cord M which passes over the pulley M' fitted on top of the valve box. On top of
the shaft, a, a ventilator d constructed on the same principles as the ventilator
described in my prior patent No. 4444 of 1885 is or may be fitted. In the ventilator
described in my prior patent, the air ascending or being drawn up the shaft a is
allowed to escape through two passages f made in the ventilator at right angles to one
another. Under my present invention I fit in the centre, or at other part of these
cross passages wind deflector plates D (see fig. 2) which prevent the wind blowing

page_text: down the shaft and causing down draught. A single plate D may be fitted in each
passage, or two or more plates may be so fitted. Instead of having only two passages
in the ventilator, I may use more than two.
To cause a strong up draught in the shaft a I may fit a steam jet arrangement in or
in connection with it. This arrangement may consist of a steam generating coil
pipe E having a steam jet nozzle E¹ fitted on, or in connection with it. Water to be
converted into steam within the coil E is supplied from a small cistern or tank F,
which is preferably supplied with water from the main by the pipe F, although, in
places where suitable, the water may be supplied by gravitation. A ball cock G or
float valve is fitted in the cistern for automatically regulating the water supply when
it is supplied from the main. The coil E is heated at its under side by one or more
gas burners H, preferably bunsen burners, as shown. The gas burner or burners H,
is or are, by preference, ignited by means of an electric spark caused by passing an
electric current from a conveniently situated battery through negative and positive
wires h, h having platinum or other terminals 2 just above the top of the burner or
burners. I is the gas pipe. Instead of heating the coil by gas jets as above described
the heat may be generated by a spirit or other lamp. On top of the water cistern or
tank F there may be provided a cover i having a spout or funnel which is led into
the ventilating shaft a for carrying off any steam which may be generated within the
tink. The steam generated in the coil E issues out of the nozzle E¹, which may be
in the ventilating shaft a as shown, in a jet which causes a vacuum in the shaft and
so creates a powerful up draught for drawing off vitiated or foul air from the interior
to be ventilated. Instead of using a steam generating coil E as hereinbefore described
a small boiler may be fitted in the shaft or funnel a.
In fig. 3 the ventilating shaft a is shown as being fitted horizontally through the
wall C of the interior to be ventilated. In this view the shaft has no valve box on it,
the valves J being fitted at the inner open end of the shaft. K are perforated metal
or gauze stops. The end of the shaft has a ventilator U on it which may be of the
same construction as that described in my prior patent No. 13099 of 1887. The
circular baffle plate D¹ of the ventilator is made with a central hole V₁ in it.
The steam jet arrangement is in this case fitted outside the shaft a the nozzle end E¹
of the coil E being alone led into the shaft.
In figs. 4 and 4 a method of ventilating baths, sinks or the like is shown. The
arrangement is shown as fitted to a bath although it is equally well adapted for a
sink or the like. V is the bath having a waste valve S and trap P. From the
trap P, which is shown slightly different in fig. 4ª from that in fig. 4, a pipe or tube R
having an opening R extends upwards to the top of the bath. The pipe R com-
municates at Qwith the pipe W leading up to the ventilator shaft a (fig. 3) or
directly to the outer atmosphere. In this arrangement the foul air is conducted by
the pipes R and W from the trap P at the underside of the bath or sink to the
ventilating shaft a where the suction caused by the steam jet or heated products of
combustion from the gas burners or lamp draws off the foul air. If desired, when
the steam boiler or coil is used for ventilating baths instead of fitting it in connection
with the shaft a the coil or boiler and heating appliance may be enclosed within a
casing T fitted to or near to the bath, and the products of combustion are carried off
by a funnels. In this case the funnel may be connected to the pipe W, as shown;
the foul air from the trap passing up the pipe R, as shown by the arrows, and the
vitiated air from the room entering the pipe R at the opening Ŕ'. The shaft a may,
if desired, in this case be dispensed with as the heated products of combustion from
the funnels would be sufficient to ensure a draught up the pipe W. Hot water from
the coil or boiler may be supplied to the bath by means of the crane cock Y if so
desired.
The arrows in all cases indicate the course of vitiated air outflow from the room,
hall, ship or other interior or from the bath or sink.
Although I have not shown my invention as fitted to ships this can be done with
advantage.

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 :-
1. The combination of parts of my improved ventilating apparatus, comprising a
ventilating shaft having valves fitted therein or in a box attached thereto, a ventilator
fitted on top of the shaft and a steam jet draught creating appliance, the whole being
arranged substantially as herein before described with reference to the drawings
annexed.
2. The combination with a ventilating shaft, of a draught creating appliance con-
sisting of a steam generating coil pipe or boiler heated by one or more gas jets
or their equivalent, substantially as herein before described and shown on the
drawings.
3. The combination with a ventilating shaft, of a steam generating coil pipe heated
by gas jets or their equivalent, and of a cistern for supplying water to said coil pipe,
substantially as hereinbefore described and shown on the drawings.
4. The ventilator d having cross passages f therein and baffle plates D fitted in
said cross passages, substantially as hereinbofore described and shown on the
drawings annexed.
5. The ventilating shaft a having at its upper or outer end a ventilator with cross
passages in it, in which are fitted baffles D, and at its lower end one or more
valves J for preventing down draught substantially as hereinbefore described and
shown on the annexed drawings.
6. The combination with the ventilating shaft a, of the pipe W leading from the
bath V, and the pipe R having an opening R¹ and leading from the trap P of said
bath, substantially as hereinbefore described and shown.
a central
7. The ventilator shaft a having valves J fitted therein and having, at its outer or
upper end, a ventilator U provided with a circular baffle plate D¹ having
hole V¹ in it, substantially as hereinbefore described with reference to fig.
drawings annexed.
Dated this 28th day of February 1890.
of the