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Патент USA US2109548

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Patented Mar. 1, 1938
UNITE
2,109,548
YATES PATENT > orrica"
2,109,548
LIQUID SPRAYER
Joseph W. Patterson, Tulsa, Okla, assignor to
Volume Sprayer Mfg. 0b., Ina, Tulsa, Okla,
a corporation of Delaware
Application November 30, 1934, Serial'No. 755,455
17 illairns. (Cl. 299-89)
7 This invention relates to new and useful im—
elongated cylindrical pump barrel having the
provements in liquid sprayers.
5
One object of the invention is to provide an im
proved sprayer of the continuous spraying type.
A particular object of the invention is to pro
vide. a sprayer wherein the liquid eduction tube
is fastened at one end in the liquid container,
while its opposite or discharge end is free‘ and
co-acts with a removable nozzle, thereby mak
ing for simplicity in construction, as well as pro
viding for more ready centering of the tip of the
_ tube in said nozzle.
Another object of the invention is to provide
a sprayer in which the liquid container is integral
' therewith, and a removable cap serves both as a
nozzle and a closure which may be removed to
?ll the sprayer; the removal of the cap exposing
the tip of the eduction tube, which, being fas
tened in place, may be easily cleaned by running
a small wire therethrough.
Still another object of the invention is to pro
vide a sprayer having an air duct therein and co
acting guard for preventing liquid reaching the
check valve, either when the device is being ?lled
25 or when it is being operated.
A further object of the invention is to provide
a continuous liquid sprayer having a liquid con
tainer fastened to its barrel, and arranged to be
?lled from its discharge end so that air will be
30 trapped in the container when the sprayer is held
in ?lling position, thus preventing ?lling the con
tainer too full of liquid, and also providing suffi
cient air space for proper operation.
A construction designed to carry out the inven
tion will be hereinafter described, together with
other features of the invention.
The invention will be more readily understood
from a reading of the following speci?cation and
by reference to the accompanying drawings, in
40 which an example of the invention is shown, and
wherein:
Figure 1 is a side elevation of a sprayer con
structed in accordance with the invention,
Figure 2 is a longitudinal vertical sectional
view,
Figure 3 is a view similar to Figure 2, the cap
being removed, whereby the spring eduction
tube is released,
Figure 4 is a transverse vertical sectional view
50 taken on the line ll—ll of Figure 1,
Figure 5 is a horizontal cross-sectional View
taken on the line 5—-5 of Figure l, and
Figure 6 is an enlarged sectional View of the
check valve.
55
In the drawings the numeral I0 designates an
usual apertured plug ll atone end, through
which the plunger rod l2 slides. On the outer
end of the rod a. cross-handle I3 is fastened.
On the inner end of the rod a ?exible plunger I4
is carried. These parts may be of any suitable
construction, such as is now common in the '
sprayer art and are subject to change, being
auxiliaries to the invention.
The forward or discharge end of the barrel I!) 10
is preferably left open, in its manufacture, so the
end of a cylindrical nipple or collar 15 maybe
soldered or otherwise fastened therein. A trans
verse head or partition I6 is soldered or suitably
fastened in the barrel, a short distance from the
nipple, to form a pressure chamber l1 forwardly
of said partition. Just forward of the partition
the barrel has a longitudinally elongated opening
I8, which registers with a complementary open
ing is in the cylindrical wall of a liquid container
or can 28, which wall is deformed to seat the bar
rel therein. The can and barrel may be secured
together by soldering or otherwise.
' ‘
The nipple l5 is provided with screw threads
2|, which may be pressed, rolled, or otherwise 25
formed therein. The screw threads could be
formed in the end of the barrel and the'nipple
omitted. A cap 22 provided with screw threads
23 is screwed onto the nipple. The nipple and
cap are preferably made of thin metal, such as ‘30.
is common in this art and which lends itself to
inexpensive production. The cap is deformed
outwardly at its central portion to form a conical
nozzle 24 having a small aperture 25 atits apex.
The nipple is formed with an in-turned annular
guard lip 25 and a packing Washer 2'! seated in
the cap is held tightly against said lip, whereby
an air-tight joint is provided.
A small curved eduction tube 28 passes through
the openings i8 and I9 and extends through the
pressure chamber H as well as to the bottom
of the can. The lower end of the tube is curved
forwardly so as to lie contiguous to the bottom of
the can to which it is secured. To facilitate
manufacture, the cylindrical portion of the can '
may be soldered to the barrel before the ends of
said can are placed thereon, whereby the tube
may be soldered in place.
The openings l8 and I 9 are long enough to
permit movement of the tube and when the cap i
22 is removed, ‘as in Figure 3, the forward end
of the tube being released, said tube will spring
forwardly. Thus when the cap is screwed onto
the nipple the free end of the tube will be en
gaged by the conical nozzle 24 and guided to
2,109,548
2
ing with the chamber, and an eduction tube ex
tending through the chamber down into the re
the center thereof, so as to register with the
aperture 25. This arrangement not only assures
a correct positioning of the end of the tube, but
makes certain the positive holding of the end
of said tube in the nozzle.
In order to admit air from the pressure cham
ber 11, the discharge end of the tube is formed
ceptacle and having an opening at its discharge
end for admitting air from the chamber, the
lower end of the tube being permanently fastened GI
at the bottom of the receptacle and its discharge
end engaging in the nozzle of the cap.
2. A sprayer comprising, a barrel, a removable
with an opening such as a slot 29. The size of
this slot may vary in accordance with the thick
10
cap on one end of the barrel having a spray noz
zle formed therein, an air pressure chamber in 10
the barrel communicating with the nozzle, a re
ness of the liquid which is sprayed. If the tube
should become clogged, the cap 22 may be re
moved and said tube cleaned by running a small
ceptacle secured to the barrel and communicat
ing with the chamber, an eduction tube extend~
ing through the chamber down into the recep
tacle and having an opening at its discharge
end for admitting air from the chamber, the
lower end of the tube being permanently fastened
at the bottom of the receptacle and its discharge
end engaging in the nozzle of the cap, a valve
for supplying air to the chamber, and an air :10
duct extending from the valve through the cham
ber to the ?lling end of the barrel to exclude liq
piece of wire back and forth therethrough. The
tube is always in place and the sprayer is much
more simple than those having removable tubes.
The pressure chamber has a small air duct 30
fastened longitudinally therein. The front end
of the duct is reduced so as to terminate adjacent
the lip 26.
When the barrel is swung to a ver
tical position from the position shown in Figure
3, the lip will overhang the duct and prevent the
liquid, which is being poured'into the chamber i'l
through the nipple, from flowing into said duct.
It will be noted (Figure 3) that the edge of the
lip is in alinement with the chordal line A,
whereby a dead air space will be formed in the
can (the barrel being held vertically) when the
sprayer is being ?lled. This prevents ?lling the
sprayer too full.
A cylindrical check valve 3! telescopes the rear
end of the air duct and has a reduced stem 32
extending through the head it. The valve is
uid from the valve.
cap on one end of the barrel having a spray noz- ‘»
zle formed therein, an air pressure chamber in
the barrel communicating with the nozzle, a re
ceptacle secured to the barrel and communicat
ing with the chamber, an eduction tube extending
'
soldered or otherwise fastened to the head so as
to have an air-tight connection therewith. The
valve supports the rear end of the duct and ad
mits air thereto from the barrel in rear of said
head. The front end of the duct is soldered in
the nipple.
In using the sprayer the cap 22 is removed and
the barrel swung to vertical position. The liquid,
such as insecticide, is poured through the nipple
into the chamber 1'.’ from which it flows to the
can 20 through the openings 18 and 19, until the
trapped air above the line A (Figure 3) causes
the nipple to be ?lled. The overhanging guard
lip 26 prevents the liquid flowing into the duct
39. The cap‘ ‘2.2 is next screwed onto the nipple,
whereby the eduction tube 28 is depressed and its
discharge end guided into the nozzle 24 so as to
register with the aperture 25.
The sprayer is now ready for use and the oper
ator, by reciprocating the plunger 14, forces air
past the valve 3! into the duct 38 and thence into
the pressure chamber :1. The valve prevents air
passing back into the barrel and its only escape
is through the openings i8 and I9 and out
through the slot 29 and the aperture 25. The
escape to atmosphere through the nozzle is so
small in proportion to the volume forced into the
160
,
3. A sprayer comprising, a barrel, a removable
chamber 17, that a pressure is soon built up, and
this pressure exerted on top of the liquid forces
the same through the eduction tube 28. The
stream of compressed air passing through the
slot 29 forces the liquid through the aperture
25, whereby a fine mist or spray is produced.
This spray will be continuous and steady, so long
as the pressure is provided by reciprocating the
plunger.
What I claim and desire to secure by Letters
Patent is:
1. A sprayer comprising, a barrel, a removable
cap on one end of the barrel having a spray noz
zle formed therein, an air pressure chamber in
the barrel communicating with the nozzle, a re
ceptacle secured to the barrel and communicat
through the chamber down into the receptacle .
and having an opening at its discharge end for
admitting air from the chamber, the lower end
of the tube being permanently fastened at the
bottom of the receptacle and its discharge end
engaging in the nozzle of the cap,‘ a valve for
supplying air to the chamber, an air duct ex
tending from the valve through the chamber to
.
the ?lling end of the barrel to exclude liquid
from the valve, and a guard adjacent the front
end of the barrel to exclude liquid from the duct w
when the sprayer is being ?lled.
4. A sprayer including, a barrel havingan open
end, a cap provided with a longitudinally di
rected conical portion closing the open .end of said
barrel and terminating in a nozzle opening, a re- »
ceptacle secured to the barrel, said barrel andre
ceptacle having a passageway therebe-tween af~
fording communication between said barrel and
receptacle, one end of the barrel provided with an
air pressure chamber communicating with the :
nozzle and the passageway between said barrel
and receptacle, means for supplying air to said
air pressure chamber, said means including a
check valve for building up air pressure within
said chamber and nozzle, and an eduction tube ,_
provided with an opening adjacent one end for
admitting air from the chamber into said tube,
said tube being arranged with the end having the
opening engaging in said nozzle and extending
rearwardly therefrom through said passageway
into said receptacle, the lower end of said tubevbe
ing fastened in the receptacle, the cap being re
movable for ?lling the sprayer.
5. A sprayer comprising, a barrel having an
open end, a cap provided with a longitudinally .
directed conical portion closing the open end of
said barrel and terminating in a nozzle opening,
a receptacle secured to the barrel, said barrel and
receptacle having a passageway therebetween af
fording communication between said barrel and ,
receptacle, one end of the barrel provided with
an air pressure chamber communicating with
the nozzle and the passageway between said bar
rel and receptacle, means for supplying air to
said chamber, an eduction tube provided with an 75
2,109,548
opening adjacent one end for admitting air from
the chamber into said tube, said tube being ar
ranged with the end having the opening engaging
in said nozzle and extending rearwardly there'
from through said passageway into said recepta
016, the lower end of said tube being fastened in
the receptacle, the cap being removable for ?ll~
ing the sprayer, and an air duct extending for
wardly in the chamber and provided with a check
10 valve arranged to admit air from said air supply
means.
’
6. A sprayer comprising, a barrel having an
open end, a cap provided with a longitudinally di
,rected conical portion closing the open end of
15 said barrel and terminating in a nozzle opening,
a receptacle secured to the barrel, said barrel and
receptacle having a passageway therebetween af~
fording communication between said barrel and
receptacle, one end of the barrel provided with
3-1
to the chamber forced thereinto by ‘said plunger.
9. A sprayer comprising, a barrel having a
plunger working therein and provided with a ?ll
ing opening at one end, a partition extending
across the barrel intermediate its ends to form an
air pressure chamber at the discharge end of
said barrel, a receptacle secured to the barrel and
communicating with the chamber, an eduction
tube extending through the chamber into the re
ceptacle and having its lower end permanently
fastened at the bottom of the receptacle, the for- " 10
ward end of the tube extending into the ?lling
opening of the barrel and having an opening for
admitting air from said chamber, a cap remov- I
ably mounted on the ?lling opening of said bar
rel and having a'longitudinally 'directednozzle '15:
receiving and supporting the forward end of said
tube, check valve means for admitting air to the
20 an air pressure chamber communicating with the ‘ chamber forced thereinto by said plunger, and an
nozzle and the passageway between said barrel
and receptacle, means for supplying air to said
chamber, an eduction tube provided with an
opening adjacent one end for admitting air from
25 the chamber into said tube, said tube being ar
ranged with the end having the opening engag
ing in said nozzle and extending rearwardly
therefrom through said passageway into said re
ceptacle, the cap being removable for ?lling the
30 sprayer, an air duct extending forwardly in the
chamber, and provided with a check valve ar
ranged to admit air from said air supply means
and a guard overhanging the front end of the air
duct.
35
‘
7. A sprayer comprising, a barrel having an
open end, a cap provided with a longitudinally di
rected conical portion closing the open end of said
barrel and terminating in a nozzle opening, a
receptacle secured to the barrel, said barrel and
40 receptacle having a passageway therebetween af
fording communication between said barrel and
receptacle, one end of the barrel provided with an
air pressure chamber communicating ‘with. the
nozzle and the passageway between said barrel
air duct extending from the valve throughrthe
chamber to the ?lling opening of the barrel'to
exclude liquid from-the valve.
'
-
10. A sprayer comprising, a barrelhaving a
plunger working therein and provided with a ?ll
ing opening at one end, a partition extending
across the barrel intermediate its end to form an
air pressure chamber at the discharge end of said
barrel, a receptacle secured to the barrel and
communicating with the chamber, an eduction
tube extendingthrough the chamber into the re
ceptacle, the forward end of the tube extending
into the ?lling opening of the barrel and having
an opening for admitting air from said-chamber,
a cap removably mounted on the ?lling'opening.
of= said barrel and having a longitudinally 'directed nozzle receiving and supporting'the for
ward end of said tube, check valve means for ad-.
mitting air to the chamber forced thereinto by
said plunger, an air duct extending from the
valve through the chamber to the ?lling-opening
ofthe barrel to exclude liquid from the valve,v
and a guard overhanging the front end of the air
duct to exclude liquid from the duct‘ when the
‘
45 and receptacle, means for supplying air to said sprayer is being ?lled.‘
11.
A
sprayer
comprising,
a
barrel
having.
an
chamber, an eduction tube provided with an‘
opening adjacent one end for admitting air from
the chamber into said tube, said tube being ar- ~
ranged with the end having the opening engaging
50 in said nozzle and extending rearwardly there
from through said passageway into said recep
tacle, the lower end of said tube being fastened in
the rceptacl'e, the cap being removable for ?lling
the sprayer, and an air duct extending forward
55 ly in the chamber and provided with a-check valve
arranged to admit air from said air supply means,
the valve having a boss ?tting within the rear ‘
end of the duct and supporting the same.
8. A sprayer comprising, a barrel having a
60 plunger working therein and provided with a
?lling opening at one end, a partition extending
across the barrel intermediate its ends to form an
air pressure chamber at the discharge end of said
barrel, a receptacle secured to the barrel and
open end, a cap provided with a longitudinally di
rected conical portion closing the open end of
said barrel and terminating in a nozzle opening, it
a partition disposed within'the barrel near the
discharge end thereof, a receptacle secured to‘
' the barrel, said barrel and receptacle having a 50,
passageway therebetween aifordin'g communica~
tion between said barrel and receptacle, the‘dis
charge end of the "barrel provided with an air,
pressure chamber communicating with the noz
zle and the passageway between said barrel and
receptacle, means for supplying air to said cham
ber, said means including a check valve for build~
ing up air pressure within said chamber and noz
zle, an'air duct extending forwardly in the cham
bar from the partition toward the nozzle and‘ 60
having its forward end reduced for preventing
liquid getting to the valve, and an eduction tube
65 communicating with the chamber, an eduction
provided with an opening adjacent one end for
tube extending through the chamber into theree
admitting air from the chamber into said tube,
said-tube being arranged with the end having
the opening engaging in said nozzle and extend!
ceptacle and having its lower end permanently
fastened at the bottom of the receptacle, the for
ward end of the tube extending into the ?lling
70 opening of the barrel and having an opening for
admitting air from said chamber, a cap remova—
bly mounted on the ?lling opening of said barrel
and having a longitudinally directed nozzle re»
ceiving and supporting the forward end of said
75 tube, and check valve means for admitting air
,
ing rearwardly therefrom through said passage
way intoqsaid receptacle, the lower end of said
tube being fastened in the receptacle, the cap be
ing removable for ?lling the sprayer.
12. A sprayer comprising, a barrel having an;
opening, a cap provided with a longitudinally die
rected conical portion closing the open end of
said barrel and terminating in a nozzle opening,
2,109,548 -
4;
of the barrel- and having a»
able cap on one end
a_-recep_tacle secured to the barrel, said barrel" spray‘nczzle
formed therein, said barrel having‘
and’: receptacle having a passageway therebe
an air-pressure chamber therein communicating
tween-affordingcommunication between said bar
with the -nozzle,rmeans working in the barrel for
rel‘ and receptacle, the'discharge end of the bar
5, rel providedwith a partition and ‘an air pressure
M chamber communicating with the nozzle and the
passageway between said barrel and receptacle,
means ‘for supplying air to said chamber includ
ing a valve for building up air-pressure within
’
and nozzle, an air duct extending
10 -, said chamber
V forwardlyin the chamber from the partition to
ward the; nozzle and‘ having its forward end re
supplying air to the chamber, a receptacle se
cured to the barrel and communicating with-the
chamber, an eduction tube extending through the
chamber down into the receptacle and having an;
opening at its discharge end for admitting air’
from the chamber, said tube being held with its
lower end at the bottom of the receptacle and its
discharge» end engaging in the nozzle of the cap,
and a check valve for supplying air to the pressure chamber, the cap being removable for ?lling
duced, a'guard adjacent'the front end of the
barrel to exclude liquid irom the duct, and any the receptacle.
15;
15v ,7 eduction'tube provided with an opening adjacent
16. A sprayer comprising, a barrel ‘having an
one end for admitting air from the chambereinto , air pressure chamber at one end portion and open‘
said tube, said tube being arrangedwith the end at the forward end of said chamber, the barrel-v
having the opening engaging in said nozzle and ~rearwardly of said chamber constituting the cylextending rearwardly therefrom through said inder of a piston pump, a cap closing the open
gqgpassageway into said receptacle, the lower end of end of said barrel and provided with an out
said'tube‘being; fastened in' the receptacle, the wardly directed portion terminating in anozzle
cap being removablelfor?lling the sprayer;
opening, a receptacle secured to the barrel, there
13.~. A sprayer comprising, a barrel having an
open end, a cap provided with a longitudinally di
25' rected conical portion and screwed on the open
end of said barrel and terminating in a nozzle
opening,'a receptacle secured to the barrel, said
barrel and receptacle having a passageway
therebetween affording communication between
30 :the barrel and receptacle, the discharge end of
the barrel provided with an air pressure cham
ber communicating with the nozzle and the pas_
sageway between said barrel and receptacle,
means for supplying air to said chamber, said
35 :means including a check valve for building up air
pressure within said chamber and nozzle, and
an eduction tube fastened in said sprayer and
provided with an opening adjacent one end for
admitting airfrorn the chamber into said tube,
40 vsaidtube being arranged with the end having
the opening disposed in the cap and engaging the
nozzle, and extending rearwardly therefrom
through said passageway into said receptacle, the
cap being removable for ?lling the sprayer.
14. A sprayer comprising, a barrel, a remov
able cap. screwed on one end of the barrel and
havingea spray nozzle formed therein, said bar
1'61 having an air pressure chamber therein at its
cap end communicating with the nozzle, means
50;;Working in the barrel for supplying air to the
chamber, a receptacle secured to the barrel
and communicating with the chamber, and an
eduction tube extending through the chamber
down into the receptacle and having an opening
at its discharge end for admitting air from the
chamber, said tube being held with its lower end
at the bottom of the receptacle and its discharge
end engaging in the nozzle of the cap, the cap
being removable to ?ll the receptacle and the
?gwtube being held in the sprayer when the cap is
removed.
15. A'sprayer comprising, a barrel, a remov
being a passageway between said chamber and
Said receptacle a?'ording communication there‘
between, means in the cylinder portion of the
barrel for supplying air to the air chamber,- a:
check valve between the cylinder ‘portion and the‘
air chamber for ‘admitting air ‘to said‘ chamber
from said cylinder portion, whereby an air pres-: 301:
sure is built up in said ‘chamber, and an educ+~
tion tube extending through the passageway into
both the air chamber and the receptacle and
having its forward end engaging in the nozzle of
the cap andits rearward end extending into the
receptacle, said tube having an opening in its
forward end for admitting air from the » air
chamber, the 7 cap- being removable from- the'
barrel.
1?. In a liquid spray device, a closed liquid con "4 :.
tainer, a pump cylinder attached thereto, a‘par-'~ 0'
tition in the pump cylinder dividing the same-into '
two chambers, a piston movable in one chame
her, the other chamber being in communication
with the container and open at its outer end and
having an inwardly directed ?ange at the outer
end, a combined unitary closure cap and nozzle
removably attached to the open end of the pump
cylinder whereby ?uid may’ be introduced into
the container through the open vend of the ‘cylin- ,
'der, a ?uid delivery tube extending from the
container to the nozzle portion of the. cap’ and a -
check valve carried by the partition including
an air tube projecting toward the open end of- the
pump cylinder and having an open end disposed T,
adjacent a side wall of the pump cylinder in
proximity of the cylinder ?ange to prevent the
passage of liquid into the air tube and'piston
chamber of the pump cylinder when the con
tainer is being ?lled through the open end of the
pump cylinder.
JOSEPH W. PATTERSON.
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