Improvements in Apparatus for Spraying Surfaces with Paint or similar Substances.
Year: 1895

page_text: Date of Application, 30th May, 1895
Complete Specification Left. 2nd Mar., 1896-Accepted, 4th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Spraying Surfaces with Paint or
similar Substances.
We, ROUGHSEDGE WALLWORK, Engineer, of the Firm of Henry Wallwork & Co., of
Reger Street, Manchester, in the County of Lancaster, and ARTHUR COLLINGS WELLS,
Engineer, of the Firm of A. C. Wells & Co., of 103 Midland Road, St. Pancras, in
the County of London, do hereby declare the nature of this invention to be as
follows:-
According to our invention we provide paint-spraying nozzles with one or more
detachable paint receptacles from which the paints or similar substances employed can
be separately or simultaneously ejected through the nozzle or nozzles by means of
compressed air.
In carrying out our invention the head of the nozzle or nozzles may be provided
with a cylindrical casing terminating at its lower end in a detachable screw-cap to
which the pipe conveying the compressed air to the nozzle may be connected. Within
the said cylindrical casing is located a receptacle or receptacles for containing the paint
or similar substance to be sprayed, these receptacles being so arranged that a space is
left between them and the surrounding casing through which space the compressed air
can reach the air nozzle and at the same time enter the mouths of the paint receptacles.
Each paint receptacle is provided with a tube that extends almost to the bottom thereof
and through these tubes the paint or similar substance is forced to the paint nozzle or
nozzles by the pressure of the compressed air acting upon the surface of the paint. The
nozzle-head is provided with suitable plugs or valves for regulating the discharge of
the paint and is also provided with an air passage leading to the air nozzle. The said
plugs or valves are so arranged that they normally occupy their closed position under
the influence of springs. Suitable stops are provided for ensuring that the extent to
which the said plugs or valves can be turned is limited so that the correct coincidence
of their openings with the passages in the nozzle-head will be obtaine when the plugs
or valves are turned to their full extent. In this manner paints or similar substances
of various colours can be ejected either separately or simultaneously from the
same nozzle.
When employing only one paint receptacle we may dispense with the external
cylindrical casing and provide said paint receptacle with a screw threaded mouth into
which the nozzle-head is adapted to screw. In this case the inlet for the entrance of
compressed air to the paint receptacle would be through the nozzle-head.
Dated this 30th day of May 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.

page_text: Improvements in Apparatus for Spraying Surfaces with Paint or
similar Substances.
We, ROUGHSEDGE WALLWORK, Engineer, of the Firm of Henry Wallwork & Co. of
Roger Street, Manchester, in the County of Lancaster, and ARTHUR COLLINGS WELLS,
Engineer, of the Firm of A. C. Wells & Co., of 103 Midland Road, St. Pancras, in
the County of London, 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 :-
This invention relates to apparatus for spraying or showering surfaces with paint or
similar substances that are usually applied by means of brushes and has for its chief
object to provide the paint spraying nozzle with a number of receptacles for containing
paints of different colours or tints, which can at the will of the operator be either
separately or simultaneously ejected through a single nozzle.
In order that our invention may be clearly understood and readily carried into effect
we will proceed to describe the accompanying drawings which illustrate two examples
of the apparatus wherein three paint receptacles are employed.
Figure 1 is a vertical section in which the paint receptacles are enclosed in a
cylindrical casing ;
Figure 2 another vertical section taken at right angles to the preceding figure;
Figure 3 a transverse section on the line 1. of Figure 2; and
Figure a fragmentary section on the line 2. 2. of Figure 2.
Figure 5 is a rear elevation of a modified construction of the apparatus in which the
paint receptacles are unenclosed; and Figure 6 is a vertical section thereof on
the line 3. 3.
Like letters of reference indicate similar parts in all the figures.
A is the nozzle-head; B the paint nozzle ; C the air nozzle which surrounds the
paint nozzle concentrically; and a¹ a² a³ are the paint receptacles.
Referring more particularly to Figures 1 to 4 the paint receptacles are enclosed in a
cylindrical casing or hollow handle A' which is connected at its upper end to the
nozzle-head and at its lower end is provided with a screw-cap A having an opening A³.
The pipe conveying the compressed air to the apparatus is connected to this cap by a
suitable union. The paint receptacles do not fit tightly within the cylindrical
casing A but are of such a size that an annular space is left between them and the
inner surface of the casing. Through this space the compressed air passes from the
screw cap A² to the interior of the paint receptacles. The lower ends of the said
receptacles are supported by webs or projections A' in the screw-cap and their upper
ends are furnished with covers a having openings a therein. These covers serve to
prevent the paint in one receptacle from running into another if the apparatus be
unduly tilted. Depending from the nozzle-head A and extending almost to the bottom
of the said paint receptacles are pipes a which communicate at their upper ends with
passages a' in the nozzle-head These passages meet together in a common conduit a³
leading to the paint nozzle B by the conduit a*. The said passages a are under the
control of a series of plugs dd2 d³ which are arranged end to end and kept in position
by a screw plug d. Each of the said plugs is provided with a handle which
projects through a slot de (Figure 4) in the nozzle-head, the said slots serving to limit
the extent to which the handles can be moved in either direction and to ensure correct
coincidence of the passages in the plugs with the said passages a' when the handles are
fully depressed by the operator. These handles are controlled by springs d' which act
to normally keep the plugs in their closed position. It will be seen that the compressed
air ascends in the annular space within the casing A' and enters the mouths of the
paint receptacles. The force exerted by the compressed air on the surface of the paint
drives it up the pipes a to the nozzle by one or other of the passages a' according as

page_text: one or other of the handles d³ is actuated. A passage is provided in the nozzle-head
through which the compressed air can uninterruptedly reach the air nozzle C. A' is
a hook by which the apparatus can be suspended in a vertical position when out
of use.
In the modified construction shewn at Figures 5 and 6 the paint receptacles a¹ a² a³
are so arranged that one may be detached from the nozzle head without disturbing the
others and in this case the compressed air is conducted to the apparatus by a pipe D
which also serves as a handle. The nozzle-head is here formed with one main air inlet
passage a which communicates with a transverse passage a leading to vertical
conduits a one of which is provided for each paint receptacle. Instead of employing
rotary plugs as in the previously described example, we use valve spindles dɖió
which have necks d" near their outer ends and reciprocate in stuffing boxes (12.
d's are spring controlled bell-crank levers having forked upper ends which engage with
the necks di The lower ends or tails of these levers are arranged within easy reach
of the operator's thumb so as to be capable of individual or simultaneous operation.
In the drawings we have shewn the cylindrical casing A' in Figures 1 to 4 and the
paint receptacles a¹ a² a³ in Figures 5 and 6 connected to the nozzle head by means of
screw threads. We do not confine ourselves to this mode of connection. Any other
convenient means, such as for instance pins engaging with slots, may be used for
this purpose.
Although our apparatus is especially intended for use with two or more paint
receptacles we may if desired construct the apparatus with only one paint-receptacle.
It will be obvious that where larger apparatus are required, we may connect the paint
receptacles and their paint pipes a to the nozzle-head by means of flexible pipes so
that the said paint receptacles can be carried on the back of the operator or be other-
wise situated; the nozzle-head alone would then be held in the hand of the operator.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. A spraying or showering nozzle provided with means whereby paints or other
substances of various colours can be applied to a surface either separately or simul-
taneously substantially as described.
2. A spraying or showering nozzle in which the receptacles for containing the
paints or other substances are enclosed in a casing or hollow handle substantially as
described with reference to Figures 1 to 4 of the drawings.
3. The modified construction of the spraying or showering nozzle substantially as
described with reference to Figures 5 and 6 of the drawings.
Dated this 2nd day of March 1896
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.