Apparatus for the Diffusion of Disinfectant or other Fluids in the Form of Sprays.
Year: 1889

page_text: Date of Application, 14th May, 1889
Complete Specification Left, 14th Mar., 1890-Accepted, 3rd May, 1890
PROVISIONAL SPECIFICATION.
Apparatus for the Diffusion of Disinfectant or other Fluids in the
Form of Sprays.
ALFRED RENÉ UPWARD of 150 Holland Road London W. electrical engineer do
hereby declare the nature of this invention to be as follows:-
The apparatus consists of an air compressing or air forcing appliance attached to
the door-frame or wall and connected with the door or entrance of the privy room
or place in which it is desired to diffuse the spray in such a manner that the usual
motion of the door or entrance by actuating the air compressing or air forcing appliance
furnishes a blast of air. A tube of convenient length leading from the air com-
pressing or air forcing appliance is connected with any ordinary known spray nozzle
and this tube supplies the spray nozzle with the necessary blast of air. The feed
pipe of this spray nozzle is immersed in a tank or vessel containing the disinfectant
or other fluid which it is desired to disperse in the form of sprays. The notion of
the door may conveniently work against a powerful spring fitted to the air com-
pressing or air forcing appliance. This spring when drawn out or compressed to a
certain point by the motion of the door is suddenly released and suddenly acting on
the air compressing or air forcing appliance produces the sudden blast necessary to
operate the spray jet. By means of the sudden release of this spring however slow
may be the motion of the door its action on the air compressing or air forcing appliance
is sudden and uniform as this spring stores up the energy of the motion slowly and
developes it rapidly.
When the type of spray jet apparatus used is such that its action depends upon
the compression of the air above the liquid in the tank or vessel containing the
fluid in which the feed pipe of the spray nozzle is immersed it is clear that as the
space occupied by the liquid diminishes and the air space above it in the tank or
vessel increases this airspace will act as a cushion and will have a retarding effect
upon the production of the spray proportionate to the size of the tank or vessel
used. This effect may conveniently be obviated by inserting the feed pipe of the
spray nozzle into a smaller tank or vessel which is fed or supplied with the fluid to
be sprayed by a siphon or small tube communicating with a larger or reservoir
vessel.
A. RENÉ UPWARD.
COMPLETE SPECIFICATION.
Apparatus for the Diffusion of Disinfectant or other Fluids in the
Form of Sprays.
I, ALFRED RENE UPWARD, of 150, Holland Road, Kensington, W. in the County
of Middlesex, Electrical Engineer, do hereby declare the nature of my invention
to be particularly described and ascertained in and by the following statement:-
My invention relates to a class of apparatus by which sprays of disinfectants, or
other fluids are produced by the means of air pressure, and has for its object the
arrangement and construction of an apparatus in such a form that it can be applied
to the doors of compartments, the operation of the apparatus being effected by the
usual motion of the said doors.
My invention consists in providing an air compressing, or air forcing appliance
which may be attached to the door frame or wall, and connected with the door or
in such a
entrance of the room or place in which it is desired to diffuse the spray

page_text: manner that the usual motion of the door or entrance by actuating the said air com
pressing or air forcing appliance furnishes a blast of air.
This blast of air can be conveyed in any convenient manner by a pipe to any
ordinary form of spray nozzle situated 'upon a vessel containing disinfectant, or other
liquid desired to be diffused.
In order that my invention may be the better understood I now proceed to
describe the same in relation to the drawings hereunto annexed. Like letters refer to
like parts throughout the drawings.
Figure 1 is a side view of my apparatus.
Figure 2 is a plan of the drum and ratchet wheel.
Figure 3 is a view of a door, and doorway having my apparatus fitted thereto.
Upon a base plate 1 fit an air compressing appliance such as the bellows A
preferably hinged at a.
These bellows are retained in their closed position by means of clastic spring
pressure produced by the spring B, acting through the wheel b upon the upper part of
the said bellows.
Upon the base board at c I hinge an arm C, which lies in close proximity with the
upper surface of the bellows, and is conveniently kept in position by means of a
yoke D.
This yoke is so constructed that any sliding movement of the arm C upon the
top of the surface of the bellows A is permitted.
Upon the end of the base board opposite to that on which the spring B is situated
I mount a spindle E in bearings F so as to be firmly fixed therein, preferably by
forming the ends square.
On this spindle a drum G is mounted so as to rotate thereon.
Within this drum GI provide a spring H, preferably of the form used in clocks
viz. one that is spiral in the plane of the drum.
One end of this spring H is attached to the internal periphery of the drum G and
the other end to the fixed spindle E.
Around the periphery of one end of the drum G, 1 arrange a ratchet wheel K and
upon
on the spindle EI provide a disc I which is free to revolve upon the same.
Upon this disc a spring pressed pawl M is arranged so as to engage with the ratchet
wheel K.
Upon the opposite side of the disc L to that on which the drum is situated I arrango
one or more projections N so that on revolving the disc in the proper direction these
projections N engage with the end of the arm C on its under side.
A suitable buffer O, of india rubber or other elastic material is provided in order
to receive the blow from the arm C at the end of its stroke when forced downwards
by the spring B.
Around the drum G I-coil any suitable line, cord or band P of a flexible nature,
such as cat-gut or steel band, in such a direction that when the drum G is revolved
by the tension of the cord P, produced by the motion of the door and unwinding the
cord from the drum and winding up the spring contained therein.
A light brake R, mounted on a spring support r is arranged to bear upon the
periphery of the disc L.
The blast of air produced by the bellows A is led therefrom through the pipe S to
any convenient form of spray nozzle T.
The spray nozzle may be fixed upon the flat part of the door or door frame of the'
compartiment, and connected to the air forcing apparatus by means of flexible
pipes.
The operation of my apparatus is as follows:--
The line, cord or steel or other band P, which is connected to a staple U, situated
at any convenient position on the door post, is kept taut by the elastic power of a
spring H contained within the drum G.
Upon the door being moved, the distance between the drum G. and the staple U
is increased, consequently unwinding the cord P, and revolving the drum G, which
rotative motion is communicated through the ratchet wheel K and pawl M to the

page_text: disc L, so that one of the projections N, which engages with the arm C, lifts the
same against the spring pressure B, extending the bellows A; and upon the disc L
arriving at a certain point in its revolution, the projection N releases the arm C, and
he bellows are suddenly closed by the spring pressure, so producing an air blast,
which is conducted by a pipo S to the spray nozzle T, and thus diffuses the
liquid.
On the return motion of the door, the disc L is retained in position by the brake R,
and the drum G is revolved, by reason of the spring pressure contained therein,
winding up the cord or band P thereon; the pawl i lifting each time to permit the
ratchet teeth to pass under.
I may equivalently fix the air forcing device upon the door frame and the staple to
which the cord is attached upon the door.
When the type of spray jet device used is such that its action depends upon the
compression of the air above the liquid in the tank, or vessel containing the same,
and the feed pipe of the spray nozzle is immersed therein, it is obvious that as the spaco
occupied by the liquid diminishes, the air space above it increases, and consequently
such air space will act as a cushion, and will have a retarding effect upon the
production of the spray in proportion to the size of the tank or vessel used.
In order to obviate this defect I insert the feed pipe of the spray nozzle into a
smaller tank or vessel, which is fed and supplied with the liquid to be sprayed by a
syphon or small tube connection from a larger reservoir vessel.
It is of course obvious that the application of this apparatus is universal to any kind
of door.
It is also clear that the motion of the door may be utilized to operate the bellows
arm C direct by means of a detent mounted upon the frame without the intervention
of the mechanism mounted upon the spindle E.
This method is not however so convenient mechanically.
Several motions of the door may be made to effect one blast of a considerable
length.
This may be effected by enlarging the bellows, and proportionately strengthening
the compressing spring B and in place of the brake R using a pawl which engages
with teeth on the periphery of the disc L, so as to arrest its backward motion between
each motion of the door.
The position of the staple U and drum G may be arranged by shortening the
stroke, and increasing the leverage of the door, so as not to appreciably retard its
usual ease of motion. Thus each motion of the door rotates the disc L through
a few degrees of the circle only until step by step one of the studs N has moved
through the required distance to actuate the arm C as above described.
There is of course sufficient cord, or band on the drum G to allow of the motion of
the door within any limits.
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. A spray producing apparatus operated by the usual motion of the door.
2nd. A spray producing apparatus consisting of an air compressing device operated
by spring pressure, the elastic extension or compression of the spray being set up and
suddenly released by the motion of a door or other equivalent movement, the
sudden exhaust of the air operating any form of blast spray nozzle for the dispersion
of liquids.
3rd. In such a spray producing apparatus a spring pressed air producing device
in combination with a rotating disc having projections which gradually reinforces
and suddenly releases the spring of the air compressing device, substantially as
described.
4th. In such a spray producing apparatus the actuating disc and projections in
combination with the pawl and driving ratchet wheel upon a drum, rotated by the

page_text: · line, cord, or band against the recoil, reaction of the internal spring by the motion of
the door.
5th. In such a spray producing apparatus the combination with a spray nozzle
feeding from a small reservoir containing the liquid to be dispersed, of an auxiliary
liquid supply cistern, substantially as described.
Dated this 14th day of March 1890
A. RENÉ UPWARD.