Improvements in or applicable to Humidifiers.
Year: 1895

page_text: Date of Application, 17th June, 1895
Complete Specification Left, 13th Mar., 1896-Accepted, 18th Apr., 1856
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Humidifiers.
1. JOHN WALLACE of 27 Medows Street, Fort, Bombay, India, Civil Engineer,
do hereby declare the nature of this invention to be as follows:-
My said invention relates to improvements in or applicable to humidifiers or
apparatus for communicating moisture to the air of factories or other buildings
particularly such as are regulated by a hygroscopic regulator such as described
in the Specification accompanying my application for a Patent No. 12003 of.
A.D. 1894.
One part of my said invention relates to valves or jets to be used with water at
low pressure.
According to this part of my said invention I arrange a number of jets or
nozzles on
an air pipe and surround them with water in suitable receptacle in
such a manner that by inclining the water receptacle or by setting the nozzles with,
their water inlets at varying heights the nozzles or jets may come successively into
operation as the water level rises. The height of the water in the water receptacle
is regulated by a valve the spindle of which is controlled by a lever or slide bar
working in combination with a hygroscopic regulator. The nozzles are provided
with adjusting caps.
The orifices of the jets are formed as two cones to give the
escaping air and water as much lateral spread as possible.
Another part of my said invention relates to devices for regulating the water
supply to humidifiers where water at high pressure is used. In this case I
use a differential piston in combination with the valve spindle and regulate the
differential pressure by an accessory admission of water at one end of the piston.
Such differential pressure is regulated by a variable leakage from the back of the
piston. A cock operated by a slide bar and cams or other suitable mechanism has
its degree of opening controlled by the hygroscopic regulator and thus the extension
or contraction of the latter causes the differential piston to rise or fall and to open
or close the water valve.
I
Where a number of such water valves are used I arrange the opening and closing
gear in such a way that the valves are successively opened and closed to correspond
to the degree of humidity in the atmosphere.
Both in the case of high and low pressure water I in some cases combine electró
magnetic means for controlling the valves from the hygroscopic regulator instead
of a cord or other mechanical connections from the regulator to the valves.
In some cases I provide for the regulator being used outside the room whose
moisture is to be controlled.
Dated this 15th day of June 1895.
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicant.

page_text: Improvements in or applicable to Humidifiers.
I JOHN WALLACE of 27 Medows Street, Fort, Bombay, India, Civil 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:-.
My said invention relates to improvements in or applicable to humidifiers or
apparatus for communicating moisture to the air of factories or other buildings
particularly such as are regulated by a hygroscopic regulator such as described
in the Specification accompanying my application for a Patent No. 12003 of
A.D. 1894.
-
In order to more clearly set forth my said invention I will describe the same
with reference to the accompanying drawings.
In the said drawings Fig. 1 shows a hygroscopic regulator for governing the
admission of water by means of a cord e as described in my Patent Specification
No. 12003 of A.D. 1894. I wish it to be understood however that I herein make
no claim to anything claimed in my Patent Specification No. 12003 of A.D. 1894.
One part of my said invention relates to the construction of valves or water
controlling devices to be used with a low pressure water supply. This part of my
said invention is illustrated in Figs. 234 and 5 of the accompanying drawings.
Fig. 3 is a side elevation partly in section.
Fig. 4 is an end elevation of the upper part of Fig. 3.
Fig. 5 is a plan.
Figs. 2 and 2 are respectively outside and sectional elevations to a larger scale
of one of the jets and nozzles.
:
g is a bar sliding in a bracket and connected with the cord e (of Fig. 1) in such
a manner as to slide to and fro as the band a (Fig. 1) expands and contracts and
thus to turn the plug of the water cock which regulates the outflow of water
from the water supply pipe w and the pipe k into a water trough in which the jet
nozzles m are situate, each jet is screwed into the air pipe l'into which a supply of
compressed air is forced by a blower fan or pump.
Each jet nozzle m has an adjusting cap n screwed thereon perforated
concentrically. The cap n has lateral perforations n' for the admission of water.
The orifice of the jet is formed as the junction of two cones so as to give the
escaping air as much lateral spread as possible. When the water in the trough
stands above the level of the orifice n¹ and the cap n is slightly raised the escaping
jet of air produces a partial vacuum under the cap whereby water rises through
the cap and is broken into a fine spray or mist by the action of the compressed
air jet.
The jets may be arranged in one or several groups fixed with the orifices n¹ at
different heights in the water troughs so as to come successively into action as the
supply of water is increased. This may be effected by inclining the water trough.
In practice the trough is placed in a chamber of suitable size through which
the whole supply of air to be moistened is caused to pass by the ventilating fan
and whence it is conveyed to the intended room through suitable distributing pipes.
The regulator sliding bar operated as hereinbefore set forth by a cord or wire e
is provided with a pin g¹ which enters the jaws of the lever o¹ loosely mounted on
the spindle of the cock j. An adjusting quadrant o² rigidly secured to the spindle
of the cock j enables the final adjustment of the position of the cock with relation
to the slide bar g to be effected. The slide bar g gives to the lever o¹ a certain
fixed movement from zero to full supply but if the movement of the regulator a
(Fig. 1) should exceed this range the pin g' will leave the jaws of the lever o¹ and

page_text: travel freely beyond in either direction. On returning it engages with the jaws.
again.
The further end of the slide bar g i.e. that not connected to the regulator
cord e is attached to a weight a weighted lever or a spring to keep the connections
with the regulator a in tension.
Another part of my said invention relates to devices for regulating the water
supply when water at high pressure is used. When water at high pressure is used
for spray producing the opening and closing of the valves is liable to offer a
varying resistance which interferes with the steady working of a hygroscopic
regulator such as (a) Fig. 1. In such case I employ the device shown in Figs. 6.
7 and 8. Fig. 6 is a plan. Fig. 7 an elevation partly in section and Fig. 8 a detail
view.
is the high pressure water pipe which supplies water at high pressure to groups.
of spray jets through valves. The valve r¹ forms part of a piston working
in the cylinder s and having ends of differing area as shown. The pipe & supplies.
water from the main pipe r through the cock s² to the head of the piston 2 which
by reason of its greater area closes the valve r¹.
A valve t when slightly open allows a constant leakage of a small amount of
water to take place from the top of the cylinder s. If now the cock s² be gradually
closed until its supply is less than the leakage through the valve t the piston r² will
rise and open the valve t and conversely if the cock 2 is opened to admit water in
excess of the leakage through the valve t the piston will descend and close the
valve r. For regulating the high pressure water supply I limit the work of the
band a (Fig. 1) to the opening and closing of the cocks s². Each valve 7 supplies.
a fourth or a fifth of the total water supply needed by the spray apparatus and they
are placed sufficiently near each other to be connected by means of a sliding rod u
common to all the valves.
The cock is operated by means of a small crank s the pin s of which takes into.
a groove in the piece u¹. The piece u¹ slides on the rod u and provides a path
for the crank pin s and can be fixed to the rod u by the thumb screw u².
The rod u is carried by brackets u³ and is connected at ut by means of a cord or
wire to the band a (Fig. 1) so as to transmit the movements of the latter.
Figs. 6 and 7 show the cock s full open and the valve r¹ shut. If now the
increasing dryness of the air elongates the band the movement of the rod u in the
direction of the arrow will carry the piece u along with it and raising the crank
pin in the dotted groove will close the cock. The leakage from the valve t
will then release the piston and open the valve r¹. A small hole at v puts the
unused part of the cylinders in communication with the atmosphere. A reverse
movement takes place on the contraction of the band by the absorption of
moisture.
By a suitable adjustment of the pieces u¹ on the bar u the valves may be caused
to open in succession and thus ensure a very steady control of the humidity of the
atmosphere in any room.
It is to be understood that the number of valves or jets or their arrangement
with regard to each other may be varied to suit the requirements of each particular
case to which my invention may be applied.
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 a humidifying apparatus the combination of valves and jets auto-
matically controlled by a regulator substantially as and for the purpose set
forth and shown with reference to Figures 23 4 and 5 of the accompanying
drawings.
2. The combination with a water trough of the jet nozzles m with or without
caps substantially as and for the purpose set forth and shown.
3. For automatically opening and closing the water supply valve or valves of a

page_text: humidifier the device substantially as hereinbefore set forth and shown with
reference to Figures 67 and 8 of the accompanying drawings.
Dated this 11th day of March 1896.
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicant.