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Патент USA US3021087

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Feb. 13, 1962
c. c. sovlA ETAL
APPARATUS FOR APPLYING FLocx
Filed Jan. 9. 1959
3,021,079
f.
United States Patent
ICÜ
3,021,079
Patented Feb. 13, 1962
1
2 ,
connected together cooperatively in an unusually simple
3,021,079
and effective manner.
. APPARATUS FOR APPLYING FLOCK
Another object is to provide a novel and improved
Cedric C. Soria, Forest Lake, Minn., and Henry Papp,
Santa Clara, Calif., assignors, by mesne assignments,
flock applicating gun, the valves of which are so inter
related that the user is always assured that the adhesive
actuator is being discharged whenever the mixture of
to General Mills, Inc., Minneapolis, Minn., a corpora
tion of Delaware
Filed Jan. 9, 1959, Ser. No. 785,945
8 Claims. (Cl. 239-306)
flock and adhesive is being discharged from the receptacle
rials to be applied with an adhesive actuator upon a sur
which:
FIG. 1 is a side elevational view of one embodiment
of our invention with portions thereof broken away;
FIG. 2 is a rear elevational view of the receptacle
which we have designed to hold the flock and facilitate
which contains the flock and adhesive.
'
These and other objects and advantages of our inven
This invention relates to apparatus and methods of ap 10 tion will more fully appear from the following descrip
tion, made in connection with the accompanying draw
plying fibrous materials to various surfaces. More par
ings wherein like reference characters refer to the same
ticularly, it relates to methods and apparatus for mixing
or similar parts throughout the several views and in
and blowing a mixture of adhesive and the fibrous mate
face to be coated with the fibrous material.
The application of fibrous materials such as_llock to
various surfaces has conventionally been performed by
dissolving an adhesive in water and then first coating the
attachment and detachment relative to the flock appli
surface to be treated with the aqueous solution, then per
'
mitting the same to dry somewhat to acquire a tacky 20 cating gun;
FIG. 3 is a plan view of our flock applicating gun;
nature, and then blowing the fibrous material upon this
FIG. 4 is a side elevational view of the gun with the
tacky surface so that it will adhere thereto. These meth
flock containing receptacle removed therefrom;
'
ods have obvious disadvantages which include, among
FIG. 5 is a sectional view taken along lines 5-5 of
others, the fact that it is a time consuming, tedious task
and it is difficult to apply the material in any appreciable 25 FIG. 3;
FIG. 6 is a sectional view taken along lines 6-6 of
layer thickness without repeated applications with- suc
cessive drying periods thereinbetween. An even greater
disadvantage however, is the tendency which the dis
FIG. 3;
solved adhesive has to clog up the orifices of the spray
gun engaging means carried by the flock containing re
`
v
FIG. 7 is a rear elevational view of the sealing and
nozzles through which the dissolved adhesive is applied. 30 ceptacle; and
FIG. 8 is a sectional view on an enlarged scale taken
Our invention is designed to eliminate these disadvan
tages and at the same time provide a novel and improved
method of applying such materials in a quicker and more
along lines 8_8 of FIG. 2.
The embodiment of our invention that is shown in
FIGS. l-8 includes, a receptacle indicated generally by
effective manner.
It is a general object of our invention to provide a 35 the numeral 10 which is secured to a flock applicator gun
indicated generally by the numeral 11 which in turn is
novel and improved method and apparatus for applying
flock or similar fibrous material to a surface.
connected to a container 12.
A more specific object is to provide a novel and irn
proved spray gun constructed and designed to apply flock
in consists of the method and apparatus for applying the
The invention claimed here
'fibrous materials such as flock to a surface, and is not
or similar fibrous material to a surface by a novel method 40 intended to include claims directed to the unique con
struction of the receptacle 10. The invention disclosed
with respect to the receptacle 10 herein will be claimed
in a separate and divisional application.
The receptacle 10 is preferably a bag having wall struc
method of applying flock and similar fibrous materials 45 ture formed of thin flexible heat scalable material 13 such
as polyethylene. The particular receptacle 10 which we
to a surface to be coated therewith which method will
utilize with my flock applicator gun 11 is provided with
substantially reduce the cost and time involved in making
an annular thickened resilient portion 14 which is in the
such applications and will insure a more effective coat
nature of an outwardly extending annular rib. This rib
ing of the material on the surface.
Another object is to provide a novel and improved 50 14 may be formed, if desired, in the construction of the
bag or, as preferred and as shown herein may be applied
method of applying flock and similar fibrous materials to
to the receptacle 10 by heat sealing such a structure as the
a surface to be coated therewith which will permit the
thickened por-tion 14 to the wall structure of the bag. This
coating to be built up to a substantial layer of thickness
can best be seen by reference to FIG. 7 and 8. A second
without utilizing intermittent drying periods to accomplish
which inherently effects the application of the flock in an
improved and more effective manner than heretofore
known.
Another object is to provide a novel and improved
the same.
Another object is to provide a novel and improved
applicator for flock and similar fibrous materials which
is simple in construction and can be manufactured inex
pensively and yet will apply the flock or similar mate
55
relatively thick portion which is annular in shape and
preferably concentric with the annular rib 14 is designated
by the numeral 15 and this thickened portion 15 is like
wise heat sealed to the wall structure 13 of the bag. It
will be noted by reference to FIG. 8 that there is a rela
60 tively thin intermediate portion 16 also heat sealed to the
rial in a more effective manner than heretofore known.
wall structure 13 of the bag and disposed between the
Another object is to provide a novel and improved
thickened annular portion 15 and the thickened annular
method for applying flock and similar fibrous materials
portion 16. This relatively thin area serves a very use
to surfaces to be coated therewith which method will
ful purpose as will be hereinafter described. It will also
result in a more effective mixing of the adhesive with the
65 be noted that a tab 17 is carried by the thickened portion
adhesive actuator and the flock to permit a relatively
15. The purpose of this unique construction is to pro
thick layer of the latter to be built up upon the surface
vide a ready means for opening the receptacle 10 in such
to be coated therewith without intermittent drying and
a manner that it will not be reusable and will provide -a
adhesive applying periods thereinbetween.
quickly available opening within the annular rib 14, for
Another object is to provide a novel and improved 70 when the user pulls on the tab 17 the thickened annular
flock applicating gun and flock container, each of which
portion 15 will tear the relatively thin area 16 to thereby
can be manufactured inexpensively and which may be
remove all of the wall structure of the bag'within the
3,021,079
3
4
thickened annular portion 14. This provides the neces
sary opening for communication between the interior of
the receptacle 10 and the interior of the material-convey
ing branch conduit of the gun 11 which will be hereinafter
described.
the barrier 26. The material-conveying conduit 24 is also
provided with a material inlet 29 and it will be noted
that this inlet is disposed forwardly of the barrier 26.
Thus, it can be readily seen that the major portion of the
air ilow which enters the material-conveying conduit 24
passes laterally into the receptacle 10 via the scoop 28
We have found that we can obviate the disadvantage
of clogging of the orifices through which the adhesive
actuator is sprayed by mixing the flock well with a pow
and entrains a portion of the flock and adhesive which it
carries outwardly with it through the material inlet 29
dered adhesive within the receptacle 10 so that each par
back into the interior of the material-conveying conduit
ticle of the fiock will carry at least one particle of ad 10 24. As it re-enters the material-conveying conduit 24,
hesive and preferably will be dusted on all sides with such
the flow -is «given a directional impetus by the minor por
adhesive. Thus, when the flock becomes airborne and
tion of the air ñoW which passes longitudinally of the
is carried outwardly from the receptacle 10 it carries with
material-conveying conduit 24 through the opening 27
it a certain amount of powdered adhesive which can be
’ and thus the airborne dow of tiock and adhesive is car
activated by water or some other satisfactory liquid.
15 ried outwardly longitudinally of the discharge end por
The container 12 may be an ordinary type container,
tion 2S of the branch conduit 24. It will be noted that
preferably with a threaded upper end portion adapted to
the ñow of flock and adhesive is uncontined after it leaves
threadedly engage a -cover member indicated generally
the discharge end portion 25 and that it remains in this
by the numeral 18. This cover member 18 of the gun
form until it converges with -an intermixes with the flow
11 carries an air conduit 19 which is adapted to be con~
from the branch conduit 21 at approxim-ately the point
nected to a source of a strong flow of air. lFor the sake
indicated by the letter X in FIG. 3.
of simplicity and to make my apparatus more readily
It will be noted that the material-conveying conduit
usable by housewives, We have found ythat the air conduit
24 has a recessed portion 30 which is shaped to conform
1‘9 may be connected by a ñexible hose such as 20 to the
to the shape of the annular thickened portion 14 of the
discharge of a vacuum cleaner of a type which is com 25 receptacle 10. The size of this recessed' portion is such
Inonly found in modern homes. The vacuum cleaner
that the resilient rib 14 will tit therein in snug frictional
and the connection thereto has not been shown herein
engaging relation. It will also be noted that the ma
because it does not constitute a part of the invention and
terial carrying branch conduit 24 also supports apair of
because any readily available source of ño-w of air may
opstanding sharpened pins 31 and 32 at the upper side of
30 the recessed portion 30. These pins 31 and 32 are pro
be utilized.
The air conduit 19 has a branch conduit 21 which as
vided to cooperate with apertures 33 and 34 in a tab por
shown has a discharge end portion indicated by the nu
tion 35 connected to the rib 14. To apply the receptacle
meral 22. A tube 23 extends within the branch conduit
-10 to the gun 11 the user merely pulls the tab 17 and
22 and terminates at the discharge end portion as best
thereby opens the receptacle 10 as hereinbefore described
shown in FIG. 5. This tube 23 extends downwardly
and then inserts the pins 31 and 32 in the openings 33 and
through the wall structure of 4the branch conduit 22 and
'34 and perforates the sealed oif portion of the bag and
through thecover 18 to a position adjacent the bottom
then snaps the annular rib or thickened portion 14 into
of the container 12 as best shown in FIG. 1. The tube
place within the recessed portion 30 of the branch con
23 is positioned in this manner so that as the strong
duit 24. This provides an extremely simple, effective and
ñow of air rushes through the air conduit 19 and the 40 quick means for positively securing the receptacle 10 in
branch conduit 22, the water or other adhesive actuator
which will be carried in the container 12 will be drawn
outwardly through the small ltube 23 and discharged at
the discharge end portion 22 whereat it will be bro-ken into
sealed relation to the gun 11.
Each of the branch conduits 21 and 24 is provided with
a slidable valve which interlocks so that the user may al
ways rest assured that the branch conduit 21 has air flow
ñne spray form by the action of the outwardly rushing 45 ing therethrough whenever air is flowing through the
air through the discharge end portion 22 of the branch
branch conduit 24. The branch conduit 24 is provided
conduit 21. It will be noted that -the spray of Water
with a vertically slidable imperforate valve member 36
emanating‘from the tube 23 will be in an unconfined ñow.
which has a laterally extending ear 37 that extends to
` The, air conduit 19 has a second branch which con
ward the branch conduit 21. Directly opposite to this
stitutes a material-conveying branch conduit 24. This 50 valve member 36 and extending across the interior of the
branch conduit 24 extends parallel to the branch conduit
branch -conduit 21 is a second valve member 38 provided
21V for a major portion of its length and then angles in~
with a laterally extending interengaging ear 39 which as
wardly and terminates in a terminal portion indicated by
best shown in FIG. 1 overlaps the ear 37 so that when
the numeral 25. It will be noted that this terminal por
ever the valve 36 is lifted to open the same, the valve 38
tion 25 is directed in such a way that the flow therefrom
must also necessarily be lifted and opened therewith.
will converge with the tlow from the discharge end por
The valve 38 isl provided with -a by-pass 40 which causes
tion 22 of the'branch conduit 21 and that the ñow from
the flow of air to be directed outwardly of the gun through
each of thesek branch conduits will be unconfined at their
the upper portion of the valve 38 when the valve is closed.
point of juncture.
«From the above it can be readily seen that We have
The material-conveying branch conduit 24 has a trans 60 provided a novel and unusually simple dock applicator
versely extending barrier or plug 26 within which Iis a
which can be manufactured inexpensively and will apply
relatively small opening 27 which extends longitudinally
ñbrous materials such as flock in a more effective manner.
of -the branch conduit 24 and gives direction to the flow
of the fibrous material such as ñock and adhesive after
By mixing the adhesive or glue with the fiock, we insure
a more complete mixing thereof and insure that each par»
it leavesV the receptacle 10.' The major portion of the 65 ticle of Hock is supplied with a sufficient amount of ad
air which tiows into the branch conduit 24, however, is
hesive to cause the same to adhere to the surface to which
directed laterally by a llow directing element such as scoop
it is to be applied. By eliminating the adhesive from the
28. This scoop 28 as can best be seen in FIGS. 1 and 3
water or liquid normally provided from the container 12,
extends laterally to within the contines of the receptacle
We have completely eliminated the undesirable feature or
1t) and has -its opening directed downwardly and slightly 70 result which normally is attained when the adhesive is
rearwardlyv so as to cause the‘ñow of air to be directed
toward the bottom of the receptacle 10 and thereby insure
that the flock and adhesive will be properly entrained in
the dow of air whichis forced through the receptacle. It
mixed within the adhesive actuator which in this case is
water, for in such instances, as hereinbeforedescribed,
the oriiices soon become plugged by dried adhesive.
Even more important however, is the fact that through
will be noted that the scoop 2t;v is disposed rearwardly of 75 the use of my gun, we acquire a more complete and effec
anchova"
5
6
tive mixing of the ñock with the adhesive and the adhe
branch conduits to control the ñow of air therethrough,
sive actuator. It will be noted that the flow of the water
spray from the branch conduit 21 is uncontined at the
time that it meets the unconiined iiow of the flock and
tion to insure that said ñrst mentioned branch conduit
adhesive after it has left the terminal portion of the
saidvalve elements being arranged in interengaging rela
will always be open when said material-conveying branch
branch conduit 24. It will also be noted that I am blow
conduit is open.
5. The structure defined in claim 1 and receptacle en
ing the adhesive and the flock into the ñow of water spray
rather than the contrary. We have found that by so
doing, we attain a more effective mixing of the adhesive
with the tiock and the adhesive actuator and insure that 10
gagement means carried by said material-conveying branch
conduit for engaging said receptacle and holding the
interior of thesame in communicating relation~ with the
interior of said material-conveying branch conduit.
each particle of the ñock is provided with an ample sup~
6. The structure defined in claim 1 and receptacle
engagement means carried by said material-conveying
branch conduit for engaging said receptacle and holding
the interior of the same in communicating relation with
the interior of said material-conveying branch conduit,
said engagement means including an annularly shaped
recessed portion surrounding the areas of communica~
tion between said receptacle `and said material-conveying
branch conduit.
ply of actuated adhesive so that it will adhere to the sur
face toward which it is directed by the flow of water spray.
With our apparatus it is possible to build up the layer
thickness of ñock to any desired thickness. This can be 15
accomplished without any drying periods between succes
sive applications of the ñock, the entire application being
accomplished through a continuous operation.
It will, of course, be understood that various changes
7. The structure defined in claim 1 wherein said termi~
may be made in the form, details, arrangement and pro 20
nal portion of said material-conveying conduit branch is
portion of the parts without departing from the scope of
disposed laterally and ahead of the discharge end por
our invention.
tion of said iirst mentioned branch conduit and is di
What is claimed is:
rected into the ñow emanating from said discharge end
1. A hand-supported, finely divided fibrous materials
applicator gun comprising, a liquid container, a conduit 25 portion, said discharge end portion and said terminal
portion being so arranged relative to each other so that
mounted on the exterior of said container and adapted
the flows emanating therefrom will be unconlined ías
to be connected to a source of a rapid ñow of air, a branch
they meet.
conduit connected in communicating relation with said
8. In a hand-supported, finely divided fibrous material
air conduit to receive a rapid ñow of air therefrom, said
branch conduit having a discharge end portion, a tube of 30 applicator gun, a cover member adapted to be remova
bly secured to a liquid container, a conduit mounted
relatively small bore extending from the interior of said
on the exterior of said cover member and adapted to be
container into said branch conduit and terminating at the
connected to a source of a rapid ñow of air, a branch
discharge end portion thereof and directed outwardly
conduit connected in communicating relation with said
therefrom whereby the liquid in said container will be
drawn outwardly through said tube and discharged in a 35 air conduit to receive a rapid flow of air therefrom, said
branch conduit having a discharge end portion, a tube
of relatively small bore carried by said cover member
and extending from the discharge end portion of said
veying branch conduit connected in communicating rela
branch conduit through said branch conduit and down
tion with said air conduit to receive a rapid ñow of air
therefrom and having a terminal portion disposed adja 40 wardly through said cover member a substantial distance
to adapt the same to extend to a position adjacent the
cent the discharge end portion of said iirst mentioned
bottom of a container when such is connected to said
branch conduit and through which the flow of air is dis
cover member, said tube being directed outwardly at
charged and directed in converging relation with the flow
the discharge end portion of said air conduit whereby
of liquid spray from said first mentioned branch conduit,
a receptacle containing fibrous materials connected to said 45 the liquid from such a container when secured to said
cover member will be drawn outwardly through said tube
material-conveying branch conduit in communicating re
and discharged in a ñne spray flow longitudinally of said
lation with the interior thereof to permit a portion of the
branch conduit when such a rapid flow of air tiows there
ñow of air through said material-conveying branch con
through, a material-conveying branch conduit connected
duit to pass through said receptacle and thereby entrain
a portion of the contents of said receptacle and convey 50 in communicating relation with said air conduit to re
ceive a rapid flow of air therefrom and having a terminal
the same to the terminal portion of said material-con
portion disposed adjacent the discharge end portion of
veying branch conduit, whereby an airborne ñow of such
tine spray ñow longitudinally of said branch conduit when
such a rapid flow of air iiows therethrough, a material-con
said lirst mentioned branch conduit `and through which
the flow of air is discharged and directed in converging
relation
to the discharge from said first mentioned branch
conñned iiow of liquid spray from the discharge end por 55
conduit, receptacle engagement means carried by said
tion of said iirst mentioned branch conduit.
material-conveying branch conduit for securing a mate
2. The structure detined in claim l wherein said ma
rials receptacle thereto and holding the same with its
terial-conveying branch conduit is constructed and ar
interior in communicating relation with the interior of
ranged to direct the major portion of the air iiow there
through into the interior of said receptacle and a minor 60 said material-conveying branch conduit, and means car
ried by said material-conveying conduit branch for di
portion of the air flow therethrough in by-passing relation
recting a portion of its air ñow through the interior of
to said receptacle to provide improved direction to the
such a receptacle when the latter is so secured to said
airborne flow of such materials through the terminal por
material
conveying branch conduit by said receptacle
tion of said material-conveying branch conduit.
engaging means.
materials will be discharged from said terminal portion
of said branch conduit in an unconñned iiow into an un
3. The structure defined in claim l wherein said mate 65
rial-conveying branch conduit includes a laterally ex
tending iiow-directing element extending into said re
ceptacle and directing a ñow of air thereinto, downwardly
Within said receptacle and also includes a material inlet
by means of which the airborne ñow of material may 70
enter said material-conveying branch conduit from said
receptacle.
4. The structure defined in claim 1 and a pair of valve
elements one each of which is disposed within each of
said branch conduits for opening and closing oiï said 75
References Cited in the tile of this patent
UNITED STATES PATENTS
808,236
984,254
1,583,918
1,718,507
1,731,953
2,313,082
Hahn _______________ .__ Dec. 26,
Akeley ______________ _... Feb. 14,
Dunn _______________ _.. May 11,
Wenzel et al. ________ _.. June 25,
Thomson ____________ __ Oct. l5,
MacDonald __________ _- Mar. 9.
(Other references ou following page)
1905
1911
1926
1929
1929
1943
8,021,079
UNITED STATES PATENTS
Y2,380,827
Downs ______________ __ July 31, 1945
2,460,347
Heuer _______________ __ Feb. 1, 1949
2,462,262
Gusiaisson et a1 _______ _2 Feb. 22, 1949
2,495,54O
Nichols -------------- -- Jan- 24, 1950 5
2,543,517
Anderson ____________ __ Feb. 27, 1951
2,757,048
2,813,751
Banner ______________ __ July 31, 1956
Barrett ______________ __ Nov. 19, 1957
2,850,421
’1110111155011y ____________ _.. Sept. 2, 1958
,
FOREIGN PATENTS
622,961
Germany ____________ __ June 30, 1938
OTHER REFERENCES
“Flock Finishing,” Pari 11i, organic Finishing, Decem
ber 1952, pages 1g_21„
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