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Патент USA US2390118

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Dec. l4„ 19%;
3,390,118
J. H. MURCH'
COMING MACHINE
Filed sepi. 11, 1942
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Filed sept. 11, 1942
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COATING MACHINE
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.INVEN TOR.
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Dec. 4p 1945-.
' J. H. MuRczHv
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2,39o,1 18
\CoATING MACHINE ,
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-
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5 Sheets-Sheet 5
»'INVENTOR.
Jœá‘ ¿f
ÁTTOE/VEYÖ'
'
Patented Dec. 4, 1945
2,390,118 '
UNITED STATESA PATENT OFFICE*
ooÃ'rlziíêoâïomNa
John n. March, morante, N. s, assigner to
American Can lCompany, New- Yi»rk, vN. I., a
corporation of New Jersey
.
v
Application September 11, 1942, Serial No. 458.021
(Chill-53)
.
«
„
drawings, discloses ,a preferred embodiment
This invention relates to coating machines and
thelike for applying a coating such as parailln
thereof.
-
--
.
-
_
Referring to the drawings:
wax to the surface of nbre containers and has
l
Figure 1 -is a top plan view of a portion' of a
particular reference to removing excess coating
coating machine embodying the instant' inven
material from the containers after the coating 5 tion, with parts broken away and shown in sec
tion and with containers shown in place in the
In the manufacture- of coated fibre milk con-`
tainers of the character disclosed in United
Fig. 2 is an enlarged vertical section__taken
` States Patent 2,085,979, issued July 6. 1937, to ‘v -'substantially along the line 2-2 in Fig. 1. with
J. M. Hothersall, the container is preferably im- »_
parts broken away and showing containers in
mersed in a bath of molten parailin wax so that
place in the apparatus,
the surfaces of the container are thoroughly
Fig. 3 is an enlarged sectional view of aportion
covered. After such’ a coating operation ac
`of the apparatus and taken substantially along
cording to established practices the container is
the line 3-,-'3 in Fig. 1. with parts broken away;
placed in position to permit the excess wax to
Fig. 4 is a side elevation of the portion of the
operation.
-
"
‘
machine;
drain away.
_
-
„_
actually required still remains 'on the surfaces of
the container and this excess wax sonietimes is
'
'
^
.
-
.
.
and shown Ain lsection;
Fig. 5 is a horizontal section taken substan
tially along'the_line B-‘-l in Fig. 3. with parts
'so
_ - broken away and
paratus;
unattractivev in appearance and wennt Ato
Fig. 6 is an
the touch. By removing all excess
and leav
lng only' that which is required, considerable wax ,
may be saved for reuse in addition to improving
the appearance, etc.
_
apparatus shown in Fig. 3, withparts broken away
.
It has been found that not all of‘the excess
wax drains away from the container during this
operation. A greater amount of wax than is
'
containers in place in the ap
'
enlarged perspective
detail of one
of the air blast units, with parts broken away and " Y
shown in section;
°
»
.
.
Fig. '7 is a sectional view taken substantially
' along a plane indicated by the lines ‘I-1 in Fig. 6:
Fig. 8 is a horizontal section taken substantially
-along the line 8-8 in Fig. '1;
5'
The instant invention contemplates -overcomi- ‘
ing these diflic'ulties by removing all unnecessaryapplied coating material from the surfaces of'
` Fig.. 9 is an enlarged side elevation of certain
the containers by the use of an air. blast so that . v parts of the apparatus as viewed along a vertical
only the required minimum amount of the mate
rial will remain in place on the container.
An object thereforel 'of the inventio'n is the
provision, in a. machine for applying coating
material to the surface of fibre containers, of .35
'
devices which project a fluid decoating medium
against the surfaces of newly coated containers
to remove all'excess coating material so that only
a predetermined minimum film of the coating
material will remain in place on the containers.
Another object is the provision of such devices
wherein air is projected against the newly coated
_
surfaces of the containers to remove all excess
coating material so that an attractive and clean
coated container will result.
.
»
_
vl4:5
Another object is the provision of devices of
this character which will effect the removal of
all excess coating material from containers while
they are moving at high speed and in a continu
ous procession so that continuous high speed pro
duction may be had.
‘.
Numerous other objects and advantages of the
plane indicated by the line 9-9 in Fig. 1, with
parts broken away;
Fig. l0 is a sectional detail of parts shown at
the lower right in Fig. 2. with the container and
its adjacent parts shown in a different position;
and
`
'
Fig. 11 is an enlarged schematic perspective
view ofthe parts vshown in Fig. 4, with parts
broken away and shown in section.
`As a preferred embodiment of the present in
vention the drawings illustrate principal parts of
a coating and treating machinel for applying a
coating of paraffin wax or the‘like onto contain
ers, as for examples the fibre milk container dis
l
closed in the Hothersall patent above mentioned.
A
The container is indicated by the letter ~b in the
drawings. The container referred to preferably
is square in cross section although the invention
is equally well adapted to cylindrical containers.
Such a square container is formed in its top end
with a dispensing o` ning cwhich is adapted to
be closed with a friction plug closure element d
invention will be apparent as it is better under
hingedly secured to the container top. `
stood from the following description, which,
In the machine illustrated in the drawings, the
taken in connection with the accompanying 55
2
2,390,118
empty containers b are fed by a continuously mov
ing conveyor A through a coating chamber B
in which the containers receive a coating of paraf
fin wax. The' chamber B is heated preferably to
facilitate application of the wax in a molten con
dition.
The freshly coated containers are received from
the coating conveyor A in a continuously rotating
transfer mechanism C and are carried through
a curved path of travel of approximately one
hundred eighty degrees. During this curved travel
of a container, its exterior surfaces are subjected
to an air blast. This air blast removes all ex
cess wax and leaves the containers with a clean,
attractive appearance and with a minimum nlm
containers b. Vertical ribs 33 on the sides of
the blocks engage against the containers to re
duce 'contact with the outside surface of the
containers.
The turret body`26 is mmmtcd on a vertical
shaft 38 which is joumaled in upper and lower
bearings 31, 38. The upper bearing 31 is formed
in a cover part 39 of the housing 25 while the
lower bearing 38 is formed in a. member 4| of the
main frame. The shaft is continuously rotated
in time with the other parts of the machine by
a spur gear l2 which is keyed to the upper end
of the shaft.
Hence as the shaft 3B rotates the turret body
26, the lower set of pockets 32 between the tur
of the wax in place to serve as a protective coat
ret blocks 29 pick up the containers from the
coating conveyor A as the pockets come adjacent
After such a wax removing operation the
the conveyor, and propel them along the curved
cleaned container is deposited on a constantly
path of travel hereinbefore mentioned. A curved
moving cooling conveyor D. This conveyor ex 20 guide rail M (Fig. 1) disposed adjacent this path
tends through a cooling chamber E in which the
of travel retains the containers in place in their
wax coating remaining on the surfaces of the
turret-pockets.
'
container becomes chilled and hardened. The
Dlu'ing this travel of the containers with the
conveyor carries the chilled containers to any
transfer turret,..excess wax on the containers is
suitable place of deposit.
’
25 prevented from adhering to the turret parts by
The coating conveyor A extends longitudinally
maintaining the latter in a heated condition. For '
of the machine in a horizontal position and' is
this purpose the turret body is made hollow and l
enclosed in a casing || which constitutes a por
steam, hot water,~or any other suitable fluid heat
tion of the main frame of the machine. It is this
ing medium is circulated therethrough to heat
`casing that encloses the coating chamber B. The 30 the turret parts to the proper temperature.
conveyor comprises a plurality of V-shaped
Circulation of the heating medium through
buckets I3 (Figs. 1 and 2), which are semi-cir
lthe turret body 28 is effected by way of an inlet
cular in cross-section and which are connected
bore 45 (Figs. l and 2) -which extends down
together by pairs of links -to form an endless
through the middle of the upper portion of the
35
chain. This conveyor travels over and is driven
vertical shaft 38. The upper end of the bore
by chain sprockets located at opposite ends of the
communicates with an inlet tube I8 which is suit
machine.
ably secured as by a slip joint in the upper end
The coating conveyor A is guided in- a straight
of the shaft. The tube leads from any suitable
line path of travel by upper and lower guide
supply of the heating medium.
tracks Il formed in brackets I5 bolted to cross~I 40 The lower end „of the inlet bore l5 terminates
beams Il of the main frame. 'I'he containers
adjacent the upper end of the turret body 26 and
propelledby the conveyor fit into the V-shaped , communicates with the interior of the turret
buckets |3 and are retained in place by a pair of
body by way of a port 48. This port extends
spaced and parallel guide rails I8.
through the inner wall of the turret body and
45
A closure guide rail I! is disposed adjacent the
through theshaft 38. Near the lower end of
rails I8 for holding the closure element d of the
the turret body an outlet port I8 extends from
,Y container in an onen position. as best shown in
the body interior to an outlet bore l2 formed in
Fig. 1. It is while the containers are moving
the middle of the lower portion of the shaft 38.
along with this conveyor that themolten wax
This outlet bore 52 extends to the lower end of
coating is applied. This coating may be anplied
the shaft where it communicates with a dis
by immersion or spraying or in any other suitable
charge tube 83. The discharge tube is suitably
manner. Coating by' immersion and using the ' secured as by a slip or universal joint in the lc `ver
end of the shaft and leads to any suitable place of
same type of conveyor A is disclosed in the James
H. Gordon, Jr., Patent 2,298,289 issued October 55 deposit for the heating medium. It is this con
struction, that permits of the circulation of the
13, 1942, on Coating machine. "I'he conveyor ad
vances the freshly coated containers in an up
heating medium through the turret body.
'
Immediately after a lower pocket 32 of the
transfer turret has picked up a container- b from'I'he transfer mechanism C is disposed ad- `
the coating conveyor A, the container begins an
jacent the coating conveyor A and is enclosed
in a vertical multiple part housing 25 (Figs. 1V 60 upwardl travel as well as the curved travel. For
the first 90 degrees of curved travel, i. e., about
and 2). A portion of this housing is formed
integral with and extends up from the coating~
one-half its full curved travel. the container
moves up into the upper pockets- 3| between the
chamber casing |I.
upper blocks 28.V This upward travel is effected
Within the housing, the transfer mechanism
by a vertically disposed lift bar 51`(Flgs. 1, 2 and
includes a rotatable turret body 28 (Figs. 2, 3, 5
10) .
and 11) having a plurality of flat faces 21 on
There are a plurality of lift bars 51, one for
which are secured a plurality of pairs of vertically
each set of upper and lower pockets 3|, 32 and
spaced upper and lower triangular blocks 28, 29. they are located adjacent the inner ends of the
'I'hese pairs of blocks are equally spaced around 70 pockets.
These lift bars slide in vertical grooves
' the outer periphery of the turret body. Taken
58 formed in the outer side wall of the turret body
collectively the peripherially spaced blocks set
28. The lower end of each lift bar is formed with
oil' between them a plurality of V-shaped upper
an outwardly extending foot 59 which projects
turret pockets 3| and lower pockets 32 which
under the container.
extend around the turret body for receiving the 75
The upper ends of the lift bars 51 project up
right pomtion toward the transfer mechanism C.
3
2,390,118
through slideways 62 formed in a disc 93 (see
« also Fig. 11) having a depending iiange hub 94
and outer ~air heads |9|, |92 which rotate with
the turret body 29 and the disc 99.
~ The inner air heads |9| 'are- triangular in shape
which is bolted to the top of the turret body 29,'
to correspond with the upper turret blocks 29.
The disc thus rotates with the turret body. The
upper ends of the lift bars 51 are fornied with 5 Each head preferably ismade in three pieces, a
-top member |94 (Figs.'3, 6 ~and '1), an inter
rack teeth 96 which engageA with lifting gears 9]
mediate member |95 and a bottom member |96.
(see also Fig. 9) of lifting devices 99. There is
These parts are superimposed one upon thé other
one of these lifting devices for each lift bar 91.
and are all secured by a bolt |91 to the bottoms
The lifting gears 61 of the lifting devices 99
of the upper turret blocks 29.
`
.
are mounted on the inner. ends of short hori
The sides of the bottom member |99 adjacent
zontal shafts 1| which are carried in bearing
the upper turret pockets 3| are beveled inwardly brackets 12 bolted to the top of the disc 93.
and are formed with short ribs ||| for engaging
There is one bracket for each lifting device. The
and for guiding a container b into an upper
outer ends of the shafts 1| carry pinions 19 which
mesh with segment gears 14 mounted on short Il pocket 9| as the container rises. The top edges
of these sides of the member are also beveled to
shafts 15 carried in the bearing brackets. The
provide a pair oi' narrow nozzle slots |.|2 between
shafts 15 also carry cam arms 16 having at their
the bottom member |96 and the next above inter
outer ends, cam rollers 11 which operate between
mediate member |95. It is from these slots that
two spaced and parallel -cam edges 19, 19 (Fig.
the air issues and impinges against the adjacent
2) of a pair of upper and lower stationary ring
sides ofthe container while the latter moves up
cams 9|, 92. Thesev ring cams are bolted in place
> into the upper pockets 3|.
within the housing 25. Hence as the disc 99 ro
Air under pressure is supplied to the slots ||2
tates with the turret body 26, the cam rollers 11 of
by way of passageways M4. ||9 formed in the
the lifting devices 69 traverse the cam edges 19, 19
and thus rock the cam arms 16. Rocking of these
arms rotates the segment gears-«14, the pinions 13,
and the rack gears 91 and thus raises and lowers
the lift bars 51 at the proper time. Raising of a
lift bar brings its foot 59 into supporting engage
ment with the bottom of its associated container
and thus lifts the container vertically while it is
moving around its curved path of travel.
f
As soon as a container is engaged by a lifter
foot 59 it is locked in place against lateral dis
placement from its lift bar. This is brought
about by a locking nnger 95 (Figsf 2 and 10)
which is mounted on a pivot pirk99 secured in
an insert block 91 carried in the lift bar. There
is one of these insert blocks-and its locking finger
for each lift bar.
'I‘he locking finger 95 extends outwardly over
ythe top of a container adjacent a lift bar and is
formed with a notch 9| which is in alignment
with the end seam of the container. The inner
end of the finger is formed with a, tail 92 which
extends through a slot in the insert bloei: 91 and
engages against the Vouter surface of the turret
body 26. A compression spring 93 retained in a
bore in the insert block presses against the lock
ing ñnger and holds its tail in engagement with
the turret body. ,
.
The engagement of the tail 92 of the locking
iinger 95 against the outer surface of the turret
body 26 retains the ñnger in a raised position over
a container _as best shown in Fig. 2. 'This position of the linger permits of the ready insertion of a
container into its turret lpocket 32. However, as
soon as the seated container begins to rise with
its lift bar 51, the` tail of the locking finger rides .
into a groove 94 formed in the turret body adja
cent the lift bar and this allows the spring 93
to press the iinger down onto ,the top of the con
bottom of the intermediate member |99 along its
sides, adjacent the slots |I2 in the bottom mem
These passageways-,communicate by
|99.
way o_f ports H9, I I1 in the intermediate member`
' ber
with openings. H9, H9 formed in the adjacent _
superimposed top'member |94.
,.
The openings H9,> ||9 in the top member |94
of the 'air heads |9| are in' communication ~with
the lower` ends of la pair of pipes |29, |29 which
extend up through the turret blocks 29. The
upper ends ‘of these pipes are connected by flex
ible tubes |21, |29 to pipe nipples |29, |39 which aresecuredinto the bottom of the disc 93.l The
nipples communicatewith horizontal radial bores
|35 (see also Fig. 11) which are formed in the
disc.
It should be noticed in this connection‘that
each horizontal bore |39 is in communication with
the tube |29 for one head |9| and with the tube
|21 for the next adjacent head |9|. This is_best
illustrated in Figs. 4 and 1l. Such a construction,
permits of greater vspeed in remoging the excess y
wax from the containers, as will be hereinafter ex'
plained in more detail.
\
i
The inner ends of the horizontal bores |99
communicate with separate vertical bores „|91
which are formed in an enlarged hub-|99 on the
disc 99. The upper ends of these verti al bores
>register' with corresponding holes I »
formed
in a hardened plate |4|fsecured to the top of
the disc hub. When the machine is in opera-'f
tion the hardened plate |4| _on the disc hub |99
rotates against a stationary plate |49. This
stationary plate is formed with an elongated slot
|45 into which the holes |99 of theplate come into
register as the plate rotates. vThe slot» is Just
long enough to have two holes|39 in register with ~
it at the same time.l
’
;
'I'he stationary plate1|43 is secured to the
tainer, as best shown in Fig. 10. There is one of
these grooves 94 adjacent each lift bar. In this
bottom of a stationaryvcover member |41 having
a long sleeveV |49 which extends up around the
depressed position of the -finger, its notch 9| en
vertical shaft 99. The Vupper end'of the sleeve
ñts inside of a depending skirt |49 of the shaft
gages over the end seam of the container and
.
thus locks the latter in place against displace--> - bearing 31 and is'locked in place against rota.-l "
ment from the lift bar while it is being ele
tion _by a tongue and groove connection |511/v ~
vated into the upper pockets 3| between the 70
formed
connection
between
holds the
the skirt
cover and
member
the sleeve.
and itsl plate
upper turret blocks 28.
|49 stationary. A compression spring |52 disposed
During this upward travel of the' container, the
around the sleeve 'and interposed between the
vshaft-bearing 31 and the cover member |41 holds
surfaces by a blast of air which is directed against
these surfaces. This blast of air issues from inner- 75 the stationary plate tightly against the rotating
excess wax is blown off its top, side, and bottom '
4
plate |4| so that leakage of air between the plates
is prevented.
The cover member |41 is formed with an an
m, m or me next fouowmi'head Inl, as here
inbefore mentioned.
nular groove |55~which is in communication with
the elongated slot |45. Groove |55 is also in
communication with a feed pipe |56 which is
threadedly secured in the cover member. This
. `_alots,||2, |16 the container moves up past the
Din-ing this blast of air from the head nozzleQ
slots, through the rectangular opening formed by
the head pockets, and into the upper turret pocket
3|. While the container is thus moving up the
pipe leads from a suitable source of supply of com
blast of air impinges ñrst against and across the
pressed air. It is this air that issues from the
top of- the container and blows off any excess
10 wax adhering to this surface. As the container
nozzle slots | I2 in the inner air heads |0|.
The outer air heads |02' are formed in quad
ascends the air blast next impinges against the
rantsl |6| (Fig. 5) of a head ring |62 which is dis
Asides of the container and thus wipes down any
posed adjacent the inner heads |0| and which
excess wax which may be on these surfaces. 'I'his
surrounds the transfer turret. This head ring
wiping action flows the excess wax downwardly
and a cooperating bottom ring |63 (see also Figs. 15 along the sides of the container until it reaches
2 and 3) rotate with the transfer turret. lFor this
the bottom. As the bottom of the container
purpose the rings |62, |63 are secured by bolts
passes the nozzle slots, the wax gathered at this
|64 to support arms |65 which depend from the
portion of the container is blown off and falls
disc 63.
_
to any suitable place of deposit from which it may
The inner edges of the head ring quadrants | 6| 20 be collected for reuse.
are serrated to provide V-shaped pockets |61
1n order to prevent the blown oil' wax from
which form a major portion of the outer heads
solidifying onto -the parts of the outer air heads
|02. These pockets are located opposite the
|02, the heads are heated by a suitable heating
pockets 3| of the inner heads |0| and taken to
gether form rectangular clearance openings be
tween the turret and the surrounding head ring
|62 for the passage of the- rising containers. In
this manner a rising container is substantially
-
medium such as steam, hot oil, hot water or the
'I'his fluid is circulated through a
25 like fluid.
jacket |6| (Fig. 2) which surrounds the head
parts and which is bolted to the heating chamber
casing | l. The heating medium is circulated
through this jacket by way of an inlet pipe |62
surrounded by the combined inner and outer air
heads |0|, '|02 as it passes up into the upper 30 which leads from a suitable source of the heating
turret pockets 3|.
-
"
Adjacent the pocket edges of the head ring
|62, the bottom of each ring quadrant is formed
medium and by way of an outlet |83 formed as a
para; of the jacket.
‘
The lifting of the container for the excess wax
with a groove |1|. The inner ends of these grooves
removing operation is effected as the transfer tur~
terminate adjacent theinner peaks of the -serra
35 ret travels through slightly less than 90 degrees,
tions and are disconnected from the grooves of
as hereinbefore mentioned. As soon as the con
the adjacent heads.
The outer ends of the
tainer reaches the peak of its up-travel, it imme
vgrooves of each head are connected so that there
diately begins to descend to its original level. This
will be a continuous passageway along the pocket
descent of the container is brought about by the
ofA each head |02. Each set of grooves is con 40 same elements that elevated it and in substan
nected by a port |12 in the head ring and a con
tially the same angle of travel of the- transfer
necting passageway |13 in the support arms |65,
with a port |14 in the disc 63 which leads from
turret. However, during this down-travel no air
blast is applied to the container. The port |39
the horizontal bores |35 in the disc.
- ‘
which admits air into its heads | 0|, |02 passes
'I'hus compressed air from the main source of 45 beyond the elongated slot |45 at the peak of the
supply as it enters the horizontal bores |35 for
up-travel of the container. Hence the air com
distribution to the inner heads |0|, also ñows by
municating with the heads |0|, |02 is cut off for
way of the _passageways |13 in the support arms
this down-travel of the container.
to the grooves |1| of the outer heads |02. Thisv
On the down-travel, the rotating transfer tur
air issues from the heads |02 by way of nozzle 50 ret brings the container into reach of the cooling
conveyor D. 'I'his conveyor preferably includes
slots |16 (Figs. 2 and 3) which are formed between
a'horizontall endless chain |35 (Figs. 1 and 2)
the inner edges of the head ring |62 and its
which operates over a sprocket |66 mounted on a
cooperating bottom plate |63. For this purpose
vertical shaft |81 journaled in suitable bearingsv
the inner top edge of the bottom plate is beveled
outwardly to form the space which constitutes 55 formed in the main frame of the machine. The
shaft is rotated in any suitable manner in time
the nozzle slots. The inner lower edge of this
with the other moving parts of the machine.
plate is beveled inwardly and is formed with ribs
'I'he chain |35 carries a plurality of spaced car
|11 for guiding a container up through the rec
riages |3| which are guided by upper and lower
tangular openings formed by the cooperating
rollers |32, |33. The upper rollers are guided in
inner and outer pockets 3|, |61.
Thus as a container b rises up by elevation of a
grooved tracks |34 suitably heldin ñxed posi
lift bar 51, the hole |33 in the rotating plate
tion over the path of the rollers. The lower roll
g |4| connecting with the air pipes, passageways
and ports leading into the inner and outer heads '
, ers |33 are flanged and ride on track rails |35
IUI, |32 adjacent the container, comes into reg
ister with the elongated slot |45 in the stationary
plate |43 and thus permits compressed air from
mounted in stationary position on the frame of
Carriages |3| receive the con
tainers'from the transfer turret when the latter
reach their down stroke in the turret and after
65 the machine.
they have been released by the locking fingers 35,
the groove |55 of the cover member |41 to flow
hereinbefore
A container received in
into the air heads and to issue from their nozzle 70 a carriage of mentioned.
the conveyor D is propelled through
slots ||2, |16. The hole |33 remains in'register
the cooling chamber E where the desired nlm of
with the elongated slot |454 until the container
wax remaining on the container, after the excess
nearly reaches the top of its up-travel. 'I'he re
has been removed, is cooled and hardened. The
mainder of the up-travel is covered by the next
conveyor then carries the cooled container to any
following hole |33 and by the pipe connection 75 suitable place of deposit.
2,390,118
construction and arrangement of the parts with- ’
tainer while it is moving with said turret mem- _
out departing from the -splrit and scope of the
invention or sacrificing all of its material ad
vantages, the form hereinbefore described being
ber.
with liquid paraffin wax and-the like, the com
‘
-
-
5. In a machine for coating ilbre- containers
merely a preferred embodiment thereof.
o
5
said head means,'and means carriedin said tur
ret member adjacent each pocket for elevating
a container through the air blast being ejected
into its head openingfor wiping the excess coat->
ing material from the outer surface of the con
It is thought that the invention and many of
its attendant advantages will‘be understood from
the foregoing description, and it will be apparent
that various'changes may be made in the form,
I claim:
'
bination of a plurality of head members ar
.
ranged in positions for completely surrounding
l. In a machine for coating nbre containers
with liquid paraiiin wax and the like, the com
' a freshly coated container, such ‘arrangement
-forming a clearance opening through which the
bination oi' plurality of head members arranged
container is adapted to be passed, means for sup
in positions or completely surrounding a freshly
coated container in-closely nested relation, such 15 plying air underl pressure to said head members
and into said clearance opening as an sir blast.
arrangement forming a clearance opening
means disposed adjacent said members for ele
through which the container is adapted to be
vating the container through the said clearance
passed while in a vertical position, said head
opening into the path of said air blast, and a
members having nozzle slots in their inner faces »
through which air under pressure is ejected 20 locking finger carried by said elevating means
and movable into engagement with the container
against the container to remove excess coating
to lock the same in place on said elevating means `
material therefrom, and means disposed adja
during movement of the latter so that excess,
cent said head members for elevating the con
coating material may be eiîectually removed l
tainer through the opening between the head
»
members so that the air under pressure impinges g5 from the container.
6. In a machine for coating fibre containers
against all exterior surfaces of the container.
with liquid paraffin wax> and the like, the combi
nation of a plurality of head members arranged in
positions for completely surrounding a freshly
bination of a plurality of head members arranged
in positions for completely surrounding a freshly 30 coated container, such arrangement 'forming a
clearance opening through which the container is
coated container, such arrangement forming a
designed to be elevated, said head members having
clearance opening through which the container
nozzle slots in their inner faces through which air
is adapted to be passed, said head members hav
under pressure is ejected against the container to
ing nozzle slots in their inner facesl through
which air under pressure is ejected against the 35 remove excess coating material therefrom', means
for elevating the containerthrough the _opening
container to remove excess coating material
between the head members into the path of the
therefrom, means for supplying air under pres
ejected air. and means for heating said heads to
sure to said head members, means disposed ad
prevent the removed excess coating material
jacent said members for elevating the container .
through the opening between the said members 40 from collecting thereon.
- 7. In a machine for coatinglnbre containersv
in_to the path'of the ejected air-and thence -for
with liquid paraffin wax and the-like. the combi
returning the container to its original position,
nation of a rotatable turret member having a
and valve means for cutting of! the supply of- air plurality of. pocketsv for the reception of freshly
from said headl members during the return o
the container to its original position.4
‘
v
coated containers, la plurality of head members on
said turret -member arranged so that tweede
3. In a machinefor coating nbre containers
` cent head members partially surround a conwith liquid paramn wax and the like, the com
tainer, thereby setting oi! inner pockets between '
bination of a rotatable turret member having a
them and disposed above and in vertical align
pocket for the reception of a freshly coated con
tainer, head means carried by said turret mem- 50 ment with said turret pockets, said head members
2. In a machine for coating ñbre containers ‘
with liquid parañin wax and the like,` the com
_ having nozzle slots for the ejection of an air blast
into and across said head pockets, means sur
' rounding and rotating with'said turret member
' ber and disposed above said lcontainer pockets so
as to completely surround a container; thereby
setting on an enclosed clearance opening through
which the container is adapted to be passed, said
for setting oi! outer pockets which cooperate with
‘head means being apertured Afor the ejection of 'u said inner pockets to form a plurality of enclo
’ 'sures each of which is adapted to completely §ur-=
a blast of air. under pressure into said opening,
roundy a container, said surrounding means hav
means for supplying air to said head means, and
elevating means fcarried in said‘turi'ei‘.)member- . ing af'plurality- of nomic slots for the ejection of .
an air blast into andîacross said outer pockets.`
sfor passing the container up through the said air '
» Í blast whereby the excess coating material is w means for supplying air under pressure to said »
surrounding means, and means for
a,
` wiped olf the outer surfaces of the container while
it is moving with said turret member. '
freshly coated lcontainer through said inner and
`
4. In a machine'for coatingvflbre c'cmtainere- 'Y outer pockets while the container is carried in ’
said rturret member-so _that the vair blast issuingwithìiquid
wax and the like, the coni
-binationcf @rotatable turret member having a lg5 from said nozzle slots wipes oif "excess coating
plurality> ct
pocketsifor the reception of\ material from the top, side. and bottom_surfaces
of theumoving container.
freshly >_emmen containers. nem means earned s
vbysaid turret member and disposed above eachv
'oi said' container. pockets so as to completely
'
'
8. In a machine for coating fibre containers
with liquid parailln wax and the like, the combi
, surround aßcontaine'r, 'thereby setting 0R- en- 7o nation of a rotatable turret'member having a
closed clearance openings through which~ con
tainers are adapted to be passed, said 'head
v:means of each container pocket having means
for ejecting a blast of air under pressure into its
clearance opening, means for supplying air to ‘is
pocket for the reception o_f a freshly coated con
tainer, a conveyor for depositing the container
into the pocket of said turret member, head
means disposed above said container pocket and
arranged to completely surround .a container,
-
6
2,390,118
thereby setting oi! an enclosed clearance opening
through which the container is adapted to be
said ports into said opening, means carried in said
turret Í,member for elevating the container into
passed, said head means having a plurality of l
the path of said air blast, and means for actu
ports communicating with said opening, means for
ating said elevating means to carry the container
ejecting a blast of air under- pressure through said
through the air blast to wipe oil excess coating
ports into said opening, means carried in said tur
material from its outer surfaces and for lowering
ret member for elevating the container through
the wiped container to remove it from said clear
the path of the air blast within said head opening
ance opening, the raising and lowering of the
for wiping the 'excess coating material from the
container taking place during the rotation of said
outer surfaces of the container while it is moving 10 turret member.
with said turret member, and a discharge conveyor
10. In a machine for coating iibre containers
for receiving the wiped of! container fromthe
with liquid parailln wax and the like, the combi
turret member and for carrying it to a suitable
place of deposit.
nation of a plurality of head members arranged
in positions for completely surrounding a freshly
9. In a machine for coating fibre containers 15 coated container, such arrangement forming a
with liquid paraffin wax and the like, the combi
clearance opening through which the container is
nation of a rotatable turret member having a
adapted to be passed, said head members having
pocket for the reception of a freshly coated con
nozzle slots in their inner faces through which air
under pressure is ejected against the container to
tainer, means for rotating said turret member,
head means disposed above said container pocket 20 remove excess coating material therefrom, and
means disposed adjacent said head _members for
and arranged to completely surround a container,
thereby setting oil an enclosed clearance opening
moving the container through the opening be
through which the container is adapted to be
tween the head members so that air under pres
sure impinges against all exterior surfaces of the
passed, said head means having a plurality of
«
ports comunicating with said opening, means for 25 container.
‘ JOHN H. MURCH.
projecting a blast of air under pressure through
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