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Патент USA US2126924

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Aug. 16, 1938.
w. H. ROSE
2,126,924
- DUST SPRAYING DEVICE
Filed Sept. 9, 1937
INVENTOR.
ATTORNEY.
Fatented ‘Aug. 16,. i938 ‘
' v2,126,924 _; '1
Wiiiiom
Egg}?Id.gFR?YHNG
ldose, derseydlity,
d.
duplication Sentemher 9, rest, Serial ‘No. id3,iitid
My invention relates to powder-spraying devices and refers particularly to devices of this
‘chsrecter in which the ?ner particles of the
powder are automatically separated from the
5, larger particles, the ?ner pairticles being emitted
in the form of s spray, while the larger particles
are retained in the powder container.
\
As powders are sprayed with the object of cov
Fla 4 is a fragmentary vertical section of o.
modi?ed form of the‘ device of my invention.
Figure 5 is s fragmentary front view of the
device of Figure 4.
j ‘
The particular form oi’ the device of my in- 5
ventlon illustrated in Figures 1 to 3 comprises a
casing it having a. closed end ll through which
there is a central opening 02 and s closed end I3
crime as large on area as is possible with a given - having a curved formation with a centrally po
1o quantity of powder, it is evident that the amount
so covered is dependent upon the ?neness oi the
sprayed powder.
‘in the employment of insecticidal powders, it
is essential that a. maximum number oi insects
15 or a, maximum amount of foliage must he con
tscted in ‘order to produce the maximum results.
and hence the efficiency and economy of such
powders are dependent upon the ?neness of the
powder employed.
so
‘
.
.
in the usually employed powdebsprcvs, or
powder guns, the powder is placed in o. receptecle
and forced outwardly in the form of d sprcy by
means of an air current, the spray consisting of
the entire powder mass of large and small perti
. 25 clen
opening IS. A longitudinally movable plunger
consists of the metal disir iii,‘ the leather, or
'rubber, washer ii and the metal member it, the
latter being adopted to maintain the disk 16 in
contact with the inner i'sce of easing iii andto' 15
maintain it in proper form during the operating
process. A plunger- rod it! is attached to the
plunger member and extends outwardly through
the opening E2 of the end it and hes a handle 20
attached thereto. Fixedly attached to the inner 20
face oi’ the casing Id is a. motel annular member
26 having openings 22.22therein, which are cov
ered by the ?exible dust impervious member 2a
ettachedto the member fit by means of the rivet 25
2d.
The larger particles not adversely to the proper
e?ciency oi the spray, so their notion upon the
lighter particles materially reduces the distance
to which the material may helsprsycd, reduces
30 the breadth of the spray, prevents a promi- dis
-
The device of my invention is not limited to
the particular construction of powder dun above,
described, this form being‘ illustrated simply as
a, means oi'showing and describing the dust forming and. spraying elements of my device.
'
r
tribution of the smaller particles, and, further,‘
A container cover it is ?xedly attached to the
because the larger particles present a. smoller
forward and underside of the powder gun and
contact surface than do smaller particles tor the
_ some amount of powder materiel.
35
sitioned concave portion id through which is an 10
-
It is evident, therefore, that superior results
would be obtained if the ?ner'porticlesoniv were
usedfor spraying purposes.
‘ I have overcome the dii’l‘culty of separating the‘
' ?ner porticies from the larger particles by con?
40 structlng-a device in which this separation is
‘
39
has e threaded downwardly extended curtain
?ange 26 adopted to be removnbly attached to
the threaded neck 21 of the powder container as.
The cover 2% has an opening it through which
is passed the tube 30, the'upper end of which is
in diluent with the opening it or the end it
and theiower end of which terminotes in the 40
upper portion of the powder cont-diner 2d and _
automatically accomplished during the spraying ‘shove the top of the powder 8i within the con».
process and in which the finer perticles ere con-=1
tsined within the spray end the lnreer ones re“
tuiner indicated by the line 532.
_
in cover til hos soother opening 88 end the '
tsined in the powder ‘container.
casing id hos on opening lid vtl’lrough which is 45
The novelty, usefulness end adventures of my passed the tube 3%. the upper end of which termi
device will be evident upon s consideration oi’ notes in the lower portion oi .he chamber 36
my speci?cation end its sccompsnvlnn drawing,
icon by the end it end the member ‘it, the
: in which similar ports are designated by .~:.;':'
45
numerals.
so
'
Figure l is e broken vertical cross section of
one form of the device of my invention.‘
Figure 2 is a front view of the upper portion
of the device of Figure 1.
lower end oi the tube til tenstine e. short dis
tence from the bottom of the powder container 2d 50
‘the operation oi the device is as follows:
When- the plunger is forced inwardly within the
casing‘, the valve 23 covers the openings $22.22 and
air within the chamber kid is forced through
theme 3 is a section tel-sen on the line e-e of ' the
the opening it ot-the end it endthrounh the tube s5
55 Figure 11.;
2
,
2,120,924
,
3! into the lower portion of the powder ll within
having a small opening in >one.end, a plunger
vthe container 28.
longitudinally movable within said casing, a pow
der container, and air means betweensaid cas
ing and said container whereby a movement of
said plunger will violently agitate a powder mass 5
within said container .and will remove powder
from above said powder mass and emit it from
—
a The air forced through the tube}! agitates the
powder 3i carrying the light ilne air-blown par
ticles into the space 37 above the powder ‘mass,
leaving the heavier particles within the powder
mass.
The air passing through the opening I! of the
end i3 and over the end of the tube", 'draws
10 these light ?ne air-blown particles upwardly
through the tube 30 and thence outwardly from
the device in the form of a spray.
It will thus be seen that the emitted dust con
tains only the ?ne airy-blown particles and is,
15 therefore, ?ner, more e?lcient and more econom
ical than would be the case if the entire mass of
powder containing both fine and large particles
was blown in the form of a spray.
_
Y
opening of said casing.
-
'
10
3. A dust spraying device comprising a casing
having a small opening ‘therein, a-powder con
tainer, air means within said casing adapted to
force air into said powder mass causing a violent
agitation thereof, and means within said casing
adapted to remove powder from above said pow
der mass during said agitation and to emit it
'15
' ‘ from the device in the form of a spray, said air
The modi?ed form of my device illustrated in
20 Figures 4 and 5 is similar to the device previously
described, except that the upper end 38 of the tube
3!! is closed and the tube 30 has an opening 39
through it in alignment with the opening E5 of
the end ii. The lower end 40 of the tube 35 is
, bent horizontally. The operation of this device
is similar to that described, except that the air
blown powder is forced outwardly through the
opening 39 of the tube 3..
the device in the form of a spray, said air means
having an opening in alignment with said end
‘
means having anv opening in alignment with said
end opening of said casing.
'
20
4. A dust spraying device comprising a. casing
having a small opening in one end; a longitudinal
ly movable plunger within said casing; a powder
container; a cover for said container having two
openings therein; a tube passing through one of
said openings and terminating in the upper por-,
tion of said container, said tube having an open--v
ing in alignment with said casing opening; a sec
ond tube passing through the other container
cover opening and connecting the space within
the casing between its end opening and said
25'
It is evident, therefore, that during the opera
tion of my device the fine, light particles ,of the
powder are automatically separated from the
larger heavier particles, the‘ full particles ‘being ‘ plunger with the lower part of said container and
emitted as a spray while the larger particles re
means for moving said plunger longitudinally
main in the powder receptacle.
.
forcing air from within said casing through'said
35
I do not limit myself to the particular size, end opening and said second tube.
Y
' 85
shape, number, arrangement or material of parts
5. Adust spraying device comprising a casing
as shown and described, as these are given simply _ having a small opening in one end; a powder con
for clearly describing the device of my invention. tainer; a cover‘ for said container having two
What I claim is:
_
'
openings therein; a tube passing through one oi.’
40 _ 1. A dust spraying device comprising a casing ‘said openings and terminating in the upper por
40
having a small opening in one end, a powder con
tion of said container, said tube having an open
tainer, air means between said casing and. said ing in alignment with said cnsing‘openin'g; a sec
container adapted to violently agitate a powder ond tube passingv through the other container
mass within said ‘container, and air means adapt
cover opening and connecting the interior of said
45 ed to remove powder from above said powder
casing with the lower. portion of said container
mass and emit it from the device in the form of and means for ‘forcing air from within said cas
a spray, said air means having an opening in ing through said end opening oi’ said casing and
alignment with said end opening at ‘said casing.
' said second tube. .
2.4!, dust spraying device comprising a casing
'WILLIAHEROSE.
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