Improvements in Apparatus for Spraying Paint, Ink, and other Pigments.
Year: 1899

page_text: Date of Application, 9th Sept., 1899
Complete Specification Left, 6th June, 1900-Accepted, 7th July, 1900
PROVISIONAL SPECIFICATION
Improvements in Apparatus for Spraying Paint, Ink, and other
Pigments.
I, CHARLES LAURENCE BURDICK, of Memorial Hall, Farringdon Street, in the
City of London, Artist, do hereby declare the nature of this invention to be as
follows:-
My invention relates to apparatus for spraying paint, ink and other pigments.
As applied for instance to an apparatus for small work I provide a holder or
handle of vulcanite or of other suitable material, a central part screwed on-to
the handle to contain the valve for the admission of air and other moving parts,
and a part with a tip and receptacle for the ink or the like screwed to the middle
part. There is a pin valve which constantly tends to close by a spring
and which is operated by a lever having its fulcrum in the central part
aforesaid. This lever is further pivotted to a milled finger piece adapted
There
to be moved by a finger of the artist when holding the apparatus.
is further a link jointed to the finger piece at one end and at the other end
guided in the central piece and this link is adapted to come in contact with
a valve situated in a tube projecting outside of the middle or central part into
which tube compressed air from a suitable source of supply is conducted. The
air passes to the tip end of the apparatus a diaphragm being interposed between
the link and the valve stem to prevent colour from. penetrating to the air
valve. The air valve is kept normally closed by a spring but when open air
passes from the valve to a passage underneath the colour receptacle to the
By pushing down the finger
tip outside of the pin valve and its nozzle.
piece the air valve is opened more or less and by drawing back the said
finger piece the pin valve is withdrawn from its nozzle. In order to regulate
the amount of opening of the pin valve possible when operating the pin valve
lever I provide a cam shaped stop inside the central piece having a small
projection passing through a slot in the central piece casing which projection
affords a handle for regulation and the travel of the lever of the pin valve is
regulated by coming into contact with the cam stop. The tip end of the apparatus
may be open in the form of a trough or it may have a colour receptacle detach-
ably mounted thereon. The stem of the pin valve is provided with suitable
packing to prevent the colour from reaching the air valve and to prevent the
air from escaping. If desired I may under some circumstances dispense with
the pin valve altogether and have nozzle with discharge ports or mouth pieces
of different sizes to suit different kinds of work. In that case of course there
would be merely a push for the air valve.
In applying my invention to heavier decoration or painting generally for
instance to the decoration or painting of walls buildings pottery or the like I
make the apparatus larger and I arrange it so as to be grasped by the hand
instead of by the fingers as is most convenient for the smaller instrument just
described. In the larger instrument there is an air tube and also a colour tube

page_text: and these tubes are suitably connected together and shaped so as to form a handle
having a convenient grip, but if desired where small quantities of different
colours are intended to be used I also provide separate colour receptacles or
bowls provided or not with covers which have plugs which screw into near the
nozzle. In order however that these bowls shall not let the colour escape when
not in the apparatus they are each provided with a valve having a spring always
tending to close the valve and a stem which opens the valve on coming into con-
tact with the interior of the colour supply passage in the instrument. Of course
when the bowl is not being used the hole into which its plug passed is closed
by a screw stopper or the like. As in the previous example the air valve and
the pin valve are operated by one finger or it may be by the thumb of the operator
against the pressure of a spring which tends to close the air valve, another spring
constantly tending to close the pin valve. As an example the pin valve may
have a handle projecting at right angles from its axis so that the said pin valve
is opened on drawing back the said handle and the latter is by a connecting rod
connected to the spindle of the air valve so as on partially revolving the handle
as well as pulling it back both the air valve and the pin valve are opened. In
order to regulate the amount of opening of the pin valve the handle is suitably
provided with an eccentric disc or cam which is capable of adjustment and there
is a fixed stop on the body part of the apparatus against which the cam takes
when the spindle is drawn back. As before the pin valve may be dispensed
with and nozzles of various sizes used instead thereof.
The colour is suitably contained in a closed vessel, compressed air is conducted
thereto and a connection between the vessel and the apparatus made by an india
rubber gutta percha or other tube so that the colour is forced out of the nozzle
in addition to being induced to flow therefrom. by the air passing out of the tip
outside of the nozzle. The same source of supply of compressed air may be
used if the paint receptacle be provided with a reducing valve so as to lower
the pressure of the air before it enters the paint receptacle. The suction nozzle
may be plain or it may be provided with means for supplying currents of air
on one or more sides so as to cause the spray of colour to be more or less con-
centrated or to cause it to assume a desired shape for special work.
Dated this Ninth day of September 1899.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
Improvements in Apparatus for Spraying Paint, Ink, and other
Pigments.
I, CHARLES LAURENCE BURDICK, of Memorial Hall, Farringdon Street, in the
City of London, Artist, 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 relates to apparatus for spraying paint, ink and other pigments
by means of compressed air.
Figure 1 of the accompanying drawings represents on an enlarged scale and
in sectional elevation an apparatus constructed according to my invention for
ordinary artist's work.
Figure 2 is a transverse section thereof on line X-X Figure 1 with the air
valve and casing broken away and.

page_text: Figure 3 is a transverse section on the line Y-Y Figure 1.
Figure 4 shews in sectional elevation on a scale about full size, an apparatus
which is suitable for use by house painters and decorators.
Figure 5 is a sectional elevation of a detachable colour receptacle.
Figure 6 is a similar view of a plug to be used when the detachable colour
receptacle is in use.
Figure 7 is a view partly in plan and partly in plan section on the line ZZ
Figure 4 and Figure 8 is a view shewing the general arrangement of the house
painters spraying device and a suitable apparatus for feeding same with air and
colour or the like.
As applied for instance to an apparatus for small work and as shewn more
particularly in Figures 1, 2 and 3 I provide a holder or handle a Figure 1 of
vulcanite or of other suitable material, a central part b screwed on to the handle
to be in connection with or to contain the valve c (for the admission of air) and
other moving parts, and a part having near its end an inner nozzle or tip c
and receptacle for the ink or the like screwed to the middle part b. There
is a pin valve which by means of a spring constantly tends to close the
orifice in the inner nozzle or tip e and this valve is operated by a forked lever, i
having its fulcrum in the central part b, that is to say the lever is provided with
a fulcrum pink which is slipped into the hooked part soldered to or made in
one with the bracket m. The hooked part is above made with a hole which
serves as a guide to the sleeve and the latter is provided with a set screw o to
clamp it to the pin valve and the spring h keeps it up against the lever i. There
is also a screw to attach the bracket m to the middle part b. There is a stop in
front of the lever to limit its forward motion and consequent amount of closure
of the orifice in the tip e and also to prevent the jamming of the pin valve in the
tipe but preferably I make this stop adjustable for instance as shown I make
the stop of a small piece of tube y see also Figure 3 which fits inside the tubular
middle part b, and one end of the tube is made slanting or inclined see Figure 1.
In order to keep this stop in place and to permit of its being moved by the finger
or finger nail I provide a thin piece of flexible metal r with a hole in the middle
to allow of the passage of the pin valve and with two projections, one of which
is longer than the other. The short projection is put through a hole in the side
of the cam and comes into frictional contact with the inside of the middle
part b. The latter is further provided with a radial slots (only shewn in Figure 3)
and the long projection in the spring piece r is sprung through another hole in
the side of the cam 7 and passes through the slot ». The lever is further pivotted
to a milled finger piece t adapted to be moved by a finger of the artist when
holding the apparatus. There is further a link u jointed to the finger piece t
(see Figures 1 and 2) at one end and at the other end guided by a pin in two
transverse slots w w in the middle piece b. These two slots are conveniently made
in the tubular casing for the air valve c, the casing being soldered or otherwise
attached to the middle part b. By making the parts for operating the colour
and air valves quite independent of each other except as regards their common
finger piece the valves may be operated independently of each other in a most
satisfactory manner. The pin of the link is adapted to come into contact
with the valve c which as aforesaid is situated in the tubular casing projecting
outside of the middle part into which casing compressed air from a suitable
source of supply is conducted. The valve is preferably provided with a stem. y
guided above and below by two guides having also holes for the passage of
air and there is further a spring I which constantly tends to close the said valve.
The stem y is in contact with a push red 2 having an airtight leather diaphragm
clamped in the tubular casing within the middle part to prevent colour dirt or
the like froni penetrating to the air valve and to prevent leakage of air and the
head or rivet of the push rod is normally in contact with the pin on the link u.
The air passes from the valve c by a port 4 and a passage 5 underneath the colour
receptacle to the outer or suction nozzle 6. outside of the pin valve 9 and its

page_text: nozzle or tip e. By pushing down the finger piece the air valve e is opened
more or less and by drawing back the said finger piece the pin valve g is with-
drawn from its tip or nozzle e. The trough at the tip end of the apparatus
may be open above or it may have a colour receptacle 7 detachably mounted
thereon either by a bayonet joint as shown by screwing or otherwise and the
cover 8 may be similarly attached. The stem of the pin valve g is provided with
suitable packing such as washers 9 to prevent the colour from reaching the air
valve and to prevent the air from escaping. If desired I may under some circum-
stances dispense with the pin valve g altogether and have nozzles e with discharge
openings of different sizes to suit different kinds of work. In that case of course
there would be merely a push for the air valve and all gear shown connected to
the pin valve would be dispensed with.
In applying my invention to heavier decoration or painting generally for
instance to the decoration or painting of walls, buildings, pottery or the like I
make the apparatus larger and in most cases I arrange it so as to be grasped by
the hand instead of by the fingers as is most convenient for the smaller instrument
just described.
In the larger instrument as shown for example in Figures 4, 5, 6 and 7 there
is an air tube 10 and also a colour tube 11 and these tubes are as shown suitably
connected together by a connecting piece 12 and also near the suction nozzle G
so as to form a handle having a convenient grip but if desired where small quan-
tities of different colours are intended to be used I also provide separate colour
containers or bowls such as that marked 7 provided or not with a cover 8 which
bowl has a plug 13 which screws into near the inner nozzle or tip e. In order
that the colour shall only pass to the said tip or inner nozzle and shall not escape
into the branch 14 of the colour tube 11. I remove the screwed plug 15 there-
from and substitute the long plug 16 which fills the lower end of the branch 14.
For the purpose of preventing the escape of the colour from the container 7 when
not in use the latter is provided with a valve 17 having a spring 18 which always
tends to close the valve and a stem 19 which opens the valve on coming into
contact with the guide 20 for the pin valve g which guide is in the colour supply
passage in the instrument. Of course when the colour container 7 is not being
used the hole into which its plug passes is closed by a screw stopper 21 or the
like. As in the previous example the air valve c and the pin valve g are operated
by one finger or it may be by the thumb of the operator against the pressure of
a spring I which tends to close the air valve and another spring in a barrel 22
attached to the pin valve g. As an example the pin valve may have a handle 23
(Figure 7) screwed or otherwise attached to the barrel 22 and projecting at right
angles thereto so that the said pin valve is opened on drawing back the aforesaid
handle and the latter is by a link or connecting rod 24 shown only in Figure 7
.connected to the spindle y of the air valve, so that on partially revolving the
handle 23 in the direction of the arrow as well as pulling it back away from the
inner nozzle e, both the air valve c and the pin valve g are opened. In order to
regulate the amount of opening of the pin valve the handle 23 is suitably pro-
vided with an eccentric disc or adjustable stop 25 having a knob 26 shown in
full lines in Figure 7 and of which the shape is indicated by dotted lines in
Figure 4. This adjustable stop is capable of being revolved on the handle 23
being held in position by friction or otherwise and there is a fixed abutment or a
flange 27 (see Figure 4) on the body part of the apparatus against which the
stop takes when the spindle is drawn back. As described with reference to the
previous modification the pin valve g may be dispensed with and nozzles of
various sizes used instead thereof. If a small container 7 for colour be not used
the colour is suitably contained in a closed vessel 28, (see Figure 8) compressed
air is conducted thereto by a pipe 29 from a storage reservoir 30 which is or may
be in connection with an air pump (not shown). The air pipe 29 is also con-
nected to the air tube 10 of the apparatus. The pressure of the air is on the
top of the paint or colour in the paint container 28 and the said paint is forced

page_text: up the pipe 31 and by the flexible pipe 32 into the colour tube 11 of the apparatus.
If desired the same source of supply of compressed air such as the reservoir 30
may be employed to force the colour out of the nozzle in the apparatus and to
supply the current of air outside of the inner nozzle for inducing the flow of
colour and in that case a reducing valve 33 of any suitable and well known con-
struction is interposed between the air supply pipe 29 and the colour container 28
so as to lower the pressure of the air before it enters the said colour container.
If convenient the colour receptacle 28 may be raised above the level of opera-
tion and then the pressure on the surface of the colour may be dispensed with,
the feed of colour taking place by gravity.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. An apparatus for spraying paint ink and other pigments consisting of a
handle, a receptacle for the paint, a pin valve normally held closed by a spring,
a packing between the paint receptacle and the part containing the controlling
mechanism, a pivotted link or lever to govern the movement of the pin valve, a
finger piece hinged to said link, a nozzle or seating for said valve, a valve for
the admission of air normally held closed by a spring, a diaphragm above said
valve so as to isolate the said valve and prevent the ingress of foreign bodies and
The leakage of air and a link or pivotted push rod suitably guided and attached
to the finger piece and a passage for the air to the outside of the nozzle sub-
stantially as described and shown.
2. An apparatus for spraying paint and other pigments consisting of a handle
containing a valve for the supply of compressed air and a detachable part con-
taining a suction nozzle for the exit of the air and an inner nozzle or tip for the
exit of the colour, means being provided for the passage of the air from the air
valve to the suction nozzle and for the passage of the colour to the inner nozzle
or tip substantially as set forth..
3. In an apparatus for spraying paint ink or the like the application and use
of a detachable colour container provided with a screwed part or other means
of attachment and a valve which is open when in use on the apparatus but is
closed when detached from the apparatus substantially as set forth.
4. In an apparatus for spraying paint ink or the like the application and use
of a pliable diaphragm between the air valve and the controlling mechanism or
the colour receptacle substantially as set forth.
5. In an apparatus for spraying paint ink or the like the application and use
of an air valve and a colour or pin valve quite independent of each other except
that they are both connected to a common finger piece substantially as set
forth.
6. In an apparatus for spraying paint ink or the like the application and use
of a pivotted push rod for the air valve and pivotted lever for the pin or colour
valve both the push rod and the pivotted lever being jointed to a finger piece
substantially as described and shown.
7. In an apparatus for spraying paint, ink or the like the application and use
of an adjustable stop to limit the forward movement of the pin or colour valve
substantially as described and shown in Figures 1 and 3.
8. In an apparatus for spraying paint, ink or the like the application and use
of an adjustable stop to limit the backward movement of the pin or colour valve
substantially as described and shown.
9. In an apparatus for spraying paint ink or the like the employment and use
of an air supply tube, a colour tube with or without a detachable colour con-
tainer, a valve for regulating the supply of air, a handle for operating the valve
with or without an adjustable stop for limiting the motion of said valve and
an air valve situated in the air tube and operated by a link connected to the
handle substantially as described and shown,

page_text: 10. In an apparatus for spraying paint ink or the like the application and use
of an air supply tube, an air delivery aperture, a colour tube, a nozzle for the
delivery of the colour with or without a detachable colour container and an air
valve substantially as set forth.
11. The constructions of apparatus shown on the drawings.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.