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Патент USA US2122510

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Íhily- 5, 1938.
Filed Oct. 8, 1935
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Patented July 5,~ 1,938
Samuel Bergstein, Cincinnati, Ohio, assignor to
Edna May Bergstein and Robert Morris Berg
stein, as trustees
Application October 8, 1935, Serial No. 44,082
12_ Claims. (Cl. .9L-»51)
This invention relates to machines `for her
forming the' operation i_n a rapid, neat and ef
metically sealing packages subsequent to the set
ficient manner and requiring a minimum of at
ting up, filling and sealing of the packages in the tention by the operator.
regular manner.
Another object is the provision of hermetic
This application relates to improved mecha
sealing apparatus, with which cartons which are
nism for hermetically sealing ypackages in accord
to receive this auxiliary hermetic sealing treat
ance with the method set forth in my copending
ment are carried on a conveyor belt in which ther
application, Ser. No. 603,064, ~illed April 4th,
apparatus for applying the hermetic sealing
1932, and is a continuation in part thereof, and
treatment is more effective if the cartons are
properly positioned and spaced on the conveyor,
a division in so far as one type of sealing appa
ratus shownl herein‘is transferred from said co
pending application.
and to automatic mechanism for spacing, feeding
My invention relates to mechanism and appa
_and positioning the cartons on the conveyor.
A further object is the provision of hermetic
ratus for sealing cartons after they are set up,
filled and sealed as an auxiliary and supple
edge-sealing mechanism having auxiliary mech
anism effective on theside ofthe carton opposite
mental hermetic sealing operation. Such cartons
are made, filled and closed by automatic machin
that on which the hermetic ,sealing medium is
applied for co-operating with said first noted
ery, a well known example being a carton in mechanism for insuring a proper application of
which the blank is folded and secured in tubular the sealing medium.
form, with four lateral walls, each having a flap
Other objects and advantages will appear from
at each end, two opposite flaps being folded in, ' a description of the invention in conjunction with
a third flap having adhesive applied to its lower the drawings, wherein:
side'being folded in on the two flaps, and the
Figure 1 is a fragmentary-perspective view of
fourth flap having adhesive applied to its lower a carton showing one of the hermetically critical
IO 5 side and being folded in on the third flap to form '
each end of the carton. In the ordinary method
one end thus is formed, the carton is filled, and
. then the other end is formed, completing the clo
My improved mechanism is adapted for
20 use, however, on all types of cartons, regardless
of the machinery used prior to the hermetic seal
ing operation. This usual method of sealing is
Fig. 2. is a side elevation of my preferred ma
chine with parts broken away and certain parts
shown in section.
y Fig. 3 is a fragmentary plan view showing the
arrangement of driving mechanism.
Fig. 4 is an enlarged sectional plan view taken
along the line 4-4 of Fig. 2.
adequate Where the ycontents are of a nature
Fig. 4a is a plan view of a sealing roller.
which will not result in their seeping or sifting
Fig. 5 is a left endÍ` elevation with parts broken
through minute openings, and where hermetic
sealing is not required. It is well known to those
familiar with-the art of making paper board
cartons that although the paper board itself may
be rendered impermeable by use of cellulose
away-and certain parts shown in section.
Fig. 5a is a section along the line Sa-Sa of
40 acetate or other substance, a carton made of such
Fig. 5.
Fig. 6 is a fragmentary section along the line
6_6 of Fig. 2.
Fig. 7 is a fragmentary perspective view of a 40
material is itself not impermeable nor air-tight.
carton passing through my machine.
This is because of the ever .present difficulty of
sealing the end flaps without crevices and' pin
holes which communicate with the interior of
Fig. 8 is a sectional view taken through’ one of
the arms of my device for inverting the cartons.
Fig. 9 is an enlarged fragmentary section of a
. `the carton and render it unfit for use as a con
tainer for many substances, such as foods, etc.,
wherein deterioration of quality or flavor resultsfrom exposure to air.
It is therefore an object of> my invention to pro
vide mechanism for applying a coating or film of
sealing medium to the hermetically critical por
tions of the carton, usually the corners of the
sealed end flaps. A further object is to provide
means whereby this sealing of the cartons may
55 be accomplished by automatic apparatus, per
carton towhich the sealing medium has been
Fig.. 10 is a side elevation of a modified form of
my apparatus.
Fig. 11 is a section along the line II-II of
Fig. 10.
Fig. 12 is a section along the line I2-|2 of
Fig. 10 and,
' Fig. 13 is a perspective view of apparatus'for
applying the sealing medium.
Referring to Figs. 2 and 4, my preferred ma 55
ychine consists essentially of a feeding or loading
device generally indicated by the ?umeral I, for
bearing bracket 33, and having lever arm 34
feeding the cartons in timed relation to an upper
conveyor indicated at 2, a turn-over or inverting
stood that movement of lever arm 34 will result in
rotation’ of the shafts 2li> and 2l with the'gates
device 3 for linverting and placing the' cartons
23 and their outward'extending arms 24. y
on a lower conveyor 4, and a series of rollers ad
Clamped to the vertical shaft 35, a pair o
collars 35a carry arms or fingers 36, having
jacent the conveyors for applying the sealing
medium, said rollers being indicated at 5a, 5b, 5c,
and 5d, in the sequence in which they perform
their respective function upon a- carton. A1
though not an essential part of my invention, I,
have shown a third or take-off conveyor generally
indicated at 6 for receiving the finished cartons
and carrying them to a packing table or store
room. `These devices, together with suitable sup
porting means and driving mechanism by which
they `are operated in coordinated relationship,
comprise my preferred form of machine as shown
in Figs. 2 to 8, inclusive.
Feeding mechanism .
Asseen in Figs. 4 and 5,- the feeding device has ' a pair of continuously running belts 8 and 9v ar
ranged, to receive >cartons from a 4conveyor or.
25 other source 1. _ The lower belt 8 is driyen from
pulley 8a, fixed to shaft I0, which has journaled
bearings in a pair of side plates I2 and I2a, and
and has fixed at its outer end a driven gear II.
fastened at its upper end. It will be thusl under
curved end portions 36a. The shaft 35 is jour
naled in bearing brackets 31 and 31a and has
Afixed at its upper end a‘spu'r gear 38 -meshing 10
with gear 38a.l fixed to' shaft 39, which is journaled
in bearing bracket 31a and has at its upper end ‘
a miter gearï40 meshing with miter gearl 40a,
fixed toshaft I5.
The feed mechanism is driven from a miter.
gear 4I fixed to shaft 53, which itself is' driven,
as ‘will be described, in conjunction with the
upper conveyor.
The gear 4I drives miter gear
4Ia, which rotates fixcdly withfspur gear 4Ibjon
stud 4Ic and drives the smaller gear 42 mount 20
ed on stud 42a. Fixedly rotating with the gear
42, sprocket 43 carries chain- 43a runningfover
upper sprocket I1, thus driving shaft` I5, pulley
9a, belt 9 and the fingers 36 through the gear
train described therewith. -Also driven by the 25
gear_42, is the gear II on shaft I0, which has'
pulley 8a to’drive belt 8.
Referring to Fig. 4, the cartons entering the de
Belt 8 also runs over adjustable idler pulleys 8b,r vice between belts 8 and 8 will be retarded by the .
30 which as seen in Fig. 5a, are rotatably mounted ` gates 23, and as the upper belt 9 is not arranged 30
on sleeves I3 held between the side plates I2 and to definitely-` contact the-cartons at this po'int
I2a by bolts I3a and nuts I3b, said bolts extend
they will rest upon belt 8 which will continue t0
` ing through adjustment slots I 2b of the side
plates. The side plates have portions I2c, which
35 extend above the surface ofthe belt 8_forming a
guideway for the cartons. Also aflixed to the side
plates a pair of rails I4 and I4a extend beyond
the limits of belt 8 to support the cartons during
vtheir travel from source 1 onto belt 8 and from»
v40 belt 8 onto upper conveyor 2. The side plate I2
is supported by bolting to the fian’ge 52b extend
ing from the upright frame member A52. Side
lplate I2a is supported by bolting 'to upright
member 14. Suitable spacing members or blocks
.45 I2d may be interposed between'the side plates
' for holding them in rigid fixed relation.
travel or slide beneath them in readiness to carry
the cartons forward when the gates are opened.
When one of the studs 44, carried by the upper 35
conveyor 2, contact lever arm 34, it is carried to
the right to eñect movement of the gates 23 and
arms 24_ which are arranged to travel throughan
arc of approximately 90 degrees. IIfhus the gatës
23 _will be at right angles to the position shown,
and-will permit passage of the'ñrst awaiting car- _
ton. The second awaiting lcarton is not per
mitted to pass because óf the action of arms 24
which revolve with the gates and grasp the said
carton tightly between the pads 24a to arrest its 45
movement along the belt. A tension spring 45 is
arranged to _return the gates- to the position
Fixed to shaft I5 pulley 9a drives the upper
ï belt 9 running over idler pulleys 9b. The shaft , shown after ther >'studs 44 have released lever arm ,
I5 is journaled in side plates I6 and I6a, and has 34. 'With this arrangement, one carton will be
a. driven sprocket I1 :fixed at one end. Plates I6 released with- each operation of ‘the gates, and _
. and I6a are supported by members I8 and I8a, each carton will be in timed relation with belts
which extend from the lower plates I2 and I2a. Brand 9`for proper entry »upon the conveyor 2.
Plate I6 is also vsupported atits inner end by the
The fingers 36 rotate in counter-clockwise di
member I9, while plate I6 is given additional -rection and in timed relation with conveyor 2
55 support by bolting to the upright frame member for insuring proper loading of the cartons there
114. Slots I6b permit adjustment of the pulleys
If for any reason a carton‘is late in its .ì
f 9b, which are mounted in the manner already
travel along the, belts 8 and 9, it will be con
described in conjunction with pulleys 8b.
tacted by the portion 36a of the fingers, which,
Vertical shafts 20 and 2|, arranged "on oppo .beingpositively driven, will advance the ~carton "
site sides ofthe belts 8 and 9, are journaled in suñicient to correct -the inaccuracy of timing. 60
pairs `of bearingibrackets 28a and 2Ia, respe'c
The fingers also serve to assist the cartons com
tively, and are held in position therein by collars pletely onto the conveyor.
22. -A pair. of fingers or gates 23, extending in
Upper conveyor
wardly across the path of .the cartons, are iixed
tothe shafts 20 and 2`I and carry outward extend
ing arms 24 with pads 24a. of resilient material
attachedattheir outer ends. Fixed to the lower
'end of shaft 20, lever’. arm 25 is -operably con
nected by link 26 to a similar lever arm 21 ñxed
to shaft 2|. Also ñxed to shaft 2I,-I pinion gearv
28 meshes with- a rack 29 arranged to reciprocate
` in suitable guiding means 29a.
The rack 29 is
attached to a twisted bar 30, which, in turn, is
' pivotally connected vtoa lever arm 3| fastened to
the lower end of a short shaft 32 journaled 'in
Referring to-Figs. 2 and 4, a front frame mem
ber 5I! and rear frame member 58a are held in
, fixed relation by tran sverse members 50h'. Se
îcured at the left end of the frame members a -
front upright 5I and rear upright‘52have bear
ings5la and Ll2a, respectively, lin which the shaft
53 is journaled. Upright .members 54 and 55 to
the right have bearings 54a and 55a, in which a
shaft 56 is journaled.
Fixedly rotating with shaft 56, sprocket 51 car
ries the upper conveyor chain 58, whichgruns
over a left-hand sprocket 59 fixed» on shaft 53.
93 of resilient material such as soft rubber are
As best seen in Fig. 6, the chain 58 isof the
type having at desired intervals special side
fastened to the plates. Springs 94, fastened to
the wheels by screws 94a, tend to hold the arms
90 in their extreme outward position, which is
limited by pins 88a mounted in the spurs 88.
Referring to Figs. 2 and 4, a pair of cam plates
or tracks 95 and 96, approximately semi-circular
in shape and supported by studs 91, from the up
plates formed with extending lugs or ears 58a,
to which are fastened by screws or bolts a series
of flat rectangular conveyor plates 60, having
a portion of their outer edges milled away to form
tongues 60a. To each alternate conveyor plate,
I> provide two upright pieces 6|, and on the
underside of these same lalternate plates, a stud
44 projects downwardly to effect timed operation
of the feed mechanism as already described.>
During its travel between left-hand sprocket
59 and right-hand sprocket 51, the conveyor as
sembly is carried in alignment by side guides 62
and 63, which arel of channel-shaped cross sec
tion, and provide sliding ñt for the tongues 60a
of the conveyor plates. As shown in Fig. 6, the
guides 62 and 63 may be supported by attaching
20 with screws 64 to suitable supports 65, -which
rights 54 and 55, are adapted to engage the cam
rollers 9|, moving and holding the arms 90 in 10.
_ward during the engagement of the rollers with
the faces 95a Íand 96a of the cam tracks. Thus
with the rotation of shaft 56, the arms 90 are
moved in and out so as to grasp the cartons rid
ing on the upper conveyor and carry them in a 15
semi-circular path. The arms are then released
by the cam plates -and the cartons are free to
travel in a relatively inverted position on the
lower conveyor 4.
are held by screws 65a to transverse bars or
beams 66, these beams having at their outer` ends
clamping ,means 66a for fastening to the frame
-members or rails 61 and 68.
The chief function of this upper conveyor is
to transport the cartons past the rollers 5a and
5b which, as later described, apply my sealing
medium to the two lower edges a and b, as seen
in Fig. 5. While traveling on thisconvey'or, the
30 cartons rest upon the platesl 60 and are carried
forward by the uprights 6|. Also, the conveyor
assemblyis somewhat narrower than the width
of the cartons so as to provide necessary clear
'ance for the sealing rollers.
Side guides 69 and -10 are provided for guiding
the cartons in alignment with the conveyor and
sealing rolls, and as seen in Fig. 6, these guides
are supported from the bent rods 69a and 10a
depending from transverse" bars 1|, which have
Secured to the lower ends of uprights 54 and
55, bearing blocks |00 and |0| have journaled
therein shaft |02, to which is ñxed a sprocket
|03 carrying chain |04, said chain being of the 25
block type, and having aflìxed at desired intervals
upstanding pins or studs |05. Bearing blocks
|06 and |01, mounted on left-hand uprights 5|
and 52, have journaled therein shaft |08 upon'
which sprocket |09 is fixed for. driving chain |04; 30
As seen in Fig. 5, the shaft |08 has fixed at its
right end a gear ||0, driven by gear |||, ñxed
With sprocket | I2 to rotate on a stud ||3 secured
in bearing block |06. The sprocket. I I2 is driven
by chain ||4, running over a larger sprocket ||5 35
fixed to shaft 53, which itself is driven as pre
viously explained.
In its travel from right-hand sprocket |03 to
left-hand sprocket lus, the chain |04 is hem
in alignment by a channel or guide ||6, which 40
at their outer ends clamping means 1|a for se
curing to longitudinal frame members 12 and 13. may be supported in any convenient manner,
Member 12 is fastened at its .left end- by screws as by brackets- orbeams || 1, which span the
to the upper end 5|b of the upright 5|; at its frame members 50 and 50a and are secured there
right end it is fastened to a similar extension (not to at their outer ends. .
Referring to Figs. 2 and 5, the studs |05
shown) of the upright 54. Member 13 is attached
at its right end by screws to upperfend 55h of of chain |04 are adapted to engage the cartons
upright 55 and at its left end to the upright 14. _ and carry them to the left, past sealing rollers 5c
An adjustable pressure bar 15 is arranged to and 5d, which seal the edges cand d of the car
bear Vagainst _the tops of the cartons and prevent tons. While traveling on this lower conveyor, the
cartons are also assisted by the members 6| of
vertical displacement when they contact the seal
the upper conveyor,- said members extending
ing rollers 5 and 5a.
downward through this portion of their travel.
For driving this upper conveyor a sprocket `16
Side guide rails ||8 and ||9 are provided for the
is fixed to shaft 56 and carries chain 16a, run
cartons and chain 58, with the plates 60 of the
ning over small sprocket 11 mounted on counter
upper conveyor serving as a top pressure member
shaft 18. Countershaft 18 is journaled in mul
tiple bearing brackets 19 and 80, and has a ñxed to prevent vertical displacement of the cartons
bevel gear 18a, from'which it is driven by motor as'they contact the sealing rollers 5c and 5d.
8|, acting through reduction unit 82, gears 82a
and 83, shaft 83a and miter gear 84.
Lower conveyor
Movement of the conveyor chain 58 causes ro
tation of left-handv sprocket 59 and shaft 53
which, as already described, has fixed thereon
bevel gear 4| for driving the feed mechanism.
Inverting mechanism
Fixedly rotating with the shaft 56,' wheels 86
and 81 have spurs 88 arranged in pairs as] shown
in Fig. 2. Extending through each pair of they
spurs, pins 89 provide pivoted bearings for the
70 arms 90. Referring to Fig. 8, the arms are o1'
round stock upon which cam rollers 9| -are ro
tatably mounted between collars 9 | a fixed by pins
9|b. The arms have fiattened end portions 90a
and 90b. Plates 92, having lugs 92a, are clamped
75 by bolts 92h to the ends- 90b of the arms. Pads
Take-01T conveyor
As seen in Fig. 2, the completely sealed. car
tons> leave the machine at the left end of the
lower conveyor. Here they may be received by a
third or take-off conveyor to carry them to a
packing table or other desired 1ocation.‘
The take-off conveyorv chain |25, having up 65
rights |26, is driven by sprocket |21, ñxed on
shaft |28, which is journaled in a pair of brackets
or arms |29 extending from the frame members
50 and 50a. Fixed to shaft |28, a gear |30 meshes
with gear |3|, which, in turn, is ñxéd to a stub 70
shaft |32, having at its outer end a sprocket |33
carrying chain |34, which is driven from a larger
sprocket |35. As best seen in Fig. 5, the sprocket
|35 is fixed to shaft 53, the driving means for
which has been previously described.
During their travel from the lower conveyor
:Sealing rollers and appurtenances thereof
As before stated, the hermetically critical por
|65 and |86 of a reservoir or tank |51, which
contains the sealing medium S and is mounted on
the' members 66 already described. A doctor blade
|68, having extended-end portions |68a and an
lupturned lin-§68 with slot |69a, is held in de
sired relation to the- roller by screws |10. Slots
|1|, through which the screws extend, alle-W
adjustment of the doctor blade by means of the
tions of a carton are at the-edges of the over
thumb screw |12 arranged as shown to enter
>lapped end flaps. Referring to Fig. l, the `critical
the fixedl nut |13. A spout |14 is provided ‘for
yfilling the tank.
onto the take-ofi’ conveyor, the cartons ride or
slide- upon a pair of rails |36, being carried along
by the members 6| of the upper conveyor as
edge a is forme-:i by three end flaps e, f and .g
continuous, respectively, with side walis E, F,
and G.
I prefer to rotate the sealing rollers at a speed
nearly sufficient to throw the sealing medium
therefrom by the centrifugal force developed.
-Also,ïmy'sea1ing medium is of relatively extra
heavy consistency. Thus> when I bring one ci'
the critical edges of a carton into contact with
= the surface of a roller, the sealing medium there
Tank |61 has an outwardly turned lip |61a,
in which a Wiper blade |15 of fiat-spring material
is mounted and arranged to Wipe surplus sealing
medium `from the bottom ofthe cartons. A sim 15
ilar .pair of blades |16 are fixed on the piece i11
for -wiping the side of the cartons. - The blades
|15 and |16 comprise the primary wiping means
|52 before mentioned, and material here scraped
from the cartons runs back into the tank. Ex 20
on is, in addition to being wiped from the roller,
actually pushed and forced by its own momentum
into whatever crevices or pin holes the carton
tending from' the tank a braeket |18 has an up
standing member or post.|19 from which addi
tional scraper blades |80 and |8| are mounted
may present. As seen in'Fig. '1, the critical edge a_ to form the secondary wiping means |53 before
25 is in contact with sealing roller 5a so that sealing mentioned. Material here scraped from the car
medium thereon is' transferred to the carton tons may be'reclaimed by use of v`drip pans not
and forced into the crevices as shown in Fig. 9. shown in the drawings.`
Here the adhesive used inthe primary sealing
The guard |5| has blade |83 of iight spring
of the end ilaps is indicated at'P and my second f material bent as at |83a and fastened by rivets
ary or auxiliary sealing medium is shown at S
|83b -to the angle bar |84, said angle bar being 30
entering and sealing the crevice a', which, if >not lthreaded to receive screws |84a .by which »it is
closed, may permit leakage
communicating adjustably ñxed in slots |8511l of the angle bar
vwith other lcrevices which, in turn, lead to the in
terior of the carton.
vIn> conjunction with I each sealing roller, an
adjustable spring pessure device generally indi
cated at |50 is provided to bear against the car
ton and insure positive contact thereof with the
sealing roller. Also a guard or shield (best se'en
in Figs. `6 and 7) is arrangedto bear against
the carton and prevent the sealing medium from
creeping or being forced unnecessarily high there
on. A group of ilat spring members indicated at
. |52 are employed to contact the sealed edge of
45 the passing carton and `wipe any surplus of seal
ing medium therefrom. Similar means |53, may
also be utilized for secondary wiping so that any
remaining surplus is completely removed to assist
rapid drying of the sealed edge.
Referring to Figs. 3 and 4, the countershaft/
18 already described, has fixed thereon miter gears
18a and 18h, driving gears i 55 and |56, respec
` tively.
Gear |55 is fixed to shaft |51, which is
journaled in the multiple bearing bracket 19,`
and other bearing brackets i51a and |51b ?xed
to the upright frame members 55 and 52, re
speetively. Fixed to shaft |51, the large sprocket
|58a drives chain |59a running overanupper and
smaller sprocket |60a iixed‘rvith sealing roller 5a
on its shaft ‘|6Ia. Also ñxedto shaft |51,sprocket
|58d carries chain |58d running over -lower
sprocket |60d fixed with sealing roller 5d on
Ashaft |6|d. Driven by miter gear 18e on counter
shaft 18,- the miter gear |56 is fixed to shaft |62,
65 which is journaled in the multiple bearing brack
et 30 and other bearing brackets |624 and |6211
fixed to upright frame members 5e4 and 5|, re
spectively. Shaft |62 has iixed thereon sprocket
`|5017, with chain |591» for driving sprocket |60b
|85. Angle bar |85 also has adjusting slots |85b,
. through which screws |850 extend to clamp the
assembly to the -carton guide rail 10.
ri-‘he springvpressure means |50 consists of a
series of 4fiat springs |86 riveted to a member |81,
`having an angular bent lug | 81a threaded to re- v
vceive screws |811), said screws being adjustably
ñxed to bracket |88 by means of slots |880. The 40
bracket |88 may be mounted by screws |882) to
carton guide rail 69.
i The appurtenances of the sealing roller 5a asv
above described are substantially duplicated in
conjunction with the sealing rollers 5b, 5c and 5d, 45
and lt will be understood that iike> numerals
throughout the drawings refer to like parts of
the adjacent sealing roller.
The apparatus of Figs. i0 to 13, inclusive, as
shown in' application, Ser. No. 603,064, of which
this application is a continuation in part, com
prises a table 20| _with legs 20|a, having on its
top transversely laligned bearings 202 near re- .
spective ends, for shafts 203 >and 204, each having «
fixed on it a pair of transversely spaced sprocket 55
wheels 205. Shaft 203 extends past its rear bear
ing 202 with a» large grooved pulley 206 and a
small grooved pulley 201 fixed `on its extension;
the latter pulley 201 having a belt 208 through
which the machine ls driven from a >suitable
source of power, not shown. The table has a
slot 20|b for these pulleys 206 and 201 and belt
208, and has slots 20|c for the sprocket wheels
205; The other shaft 204 extends to the rear of
its rear bearing 202 and has fixed on its extension 65
the bevel gear 208, for which the table has a, slot
Sprocket >chains 2|. nm on the wheels 205,
each having aseries of lugs 2| |, _and a bed bar
fixed on shaft |6|îo with sealing/roller 5b. The 2|2 lies between the wheels 205 and between the 70
sealing roller 5c is driven in like manner by ` chains 2i 0 and extends past them at both ends;
sprocket i58c. and chain ‘ |59c running over being -fixed to a bottom plate 2|3 by screws 2M.
' sprocket |50c.
Qhannels 2| 5 also are screwed to this piate 2| 3
Referring to Figs. 4a_ and 6, the sealing roller to guide the chains 2|0. The bottom plate 2| 3
76 5a ls -fixed on shaft |6|a journaled in end walls has legs 2|6..extending down, with vertical slots 75
2| 1; and brackets 2|8 extend up from the table
20|l With- studs 2|9 through the respective leg
of the disk, and having its outer end part bent
2|0. The left hand shaft 230 has ñxed on it a
grooved pulley 233, and a belt 234 runs around
of material carried up on the disk 243. Where
the foot extensions 238a of the reservoirs are 30
screwed to the table, they have front to rear slots
up and straddling an adjusting screw 253 between
slots 2|1 and having nuts _220 so that the plate collars 254 fixed on the screw, the screw being
2|3 may be adjusted vertically at either end by 4threaded through the ear 24| on the reservoir
set screws 22| passing up through the table 20|
rim. On the left side of the top of each reservoir
against the bottoms of the plate legs 2|6 and hav
238 is .screwed a horizontal plate 255 extending
- ing lockriuts 222.
in over the spout extension 239 and having ñxed
Back guides 223 are supported on posts 224to on its inner end two scrapers 256 and 251, extend
' - extend along to the rear of the chains 2|0; the
ing in past the inner end of the plate 255 past
10 posts 224 having lower extensions under the bed
the periphery of the disk 243. A third scraper
bar 2|2, to which they are secured by screws 225. 258 is fixed in the left or outer end of the spout
Y These back guides 223 extend the full length of extension` 239 and extends up therefrom and in
the machine. The front guides 226 are simi
ward past the ends of the other two Scrapers 256
larly mounted by posts 221 secured to the bed bar and 251. The latter incline to the left, in the di
15 2|2 by screws 228; these front guides 226 ex
rection of conveyance of the cartons, and the 15
tending from the left end of the' machine in left hand one, 251, is vnarrower and does not
front of the chains 2|0 and terminating near project up as far as the right hand one 256.
the right hand sprocket wheels 205, leaving a These two Scrapers 256 andl 251 are ordinarily
space for placing the cartons onto the bed bar required because the closure flaps are often slight
20, 2|2 in the paths ofthe chain lugs 2| |, to be pulled
ly inclined from parallelism with the walls of the 20
between the guides 223 and 226 in proper align
carton. If there was only one scraper it might
be held` away from the end wall by the edge of
Four standards 229 are fixed to the table |, two the closure iiap so an extra scraper spaced slight
at its rear and two at its front edge, in two pairs ly above the edge of the closure flap is ordi
aligned from front to rear, each pair having narily required. A third scraper 758 scrapes the 25
journaled in it'a shaft 230 and each shaft 230 bottom of the container. Material scraped from
having fixed on it a drum 23 |. The pressure belt the carton runs back into the spout extension 239.
232 runs around these drums 23| over the chains 'I‘he blade 252 is adjusted to control the amount
this pulley 233 and around theY large pulley 206_
that is fixed on the sprocket wheel shaft 203 as
before described.
Each standard 229 has piv
oted on it below the shaft 30 a pressure arm 235;
35 each pair of arms 235 journaling a pressure roll
er 235 which is pulled down against the lower
2|0. 'I'his permits each disk 243, carried by the
reservoir, to be set so that its periphery passes 35
very close to the path of travel of the respective
lateral bottom edge of the carton, as carried by
the chains 2|0 along the bed bar 2I2 by engage
down to a lower part of the respective standard ment of the chain lugs 2| l, and as held down by.
229. With the chains 2|0 and bed bar 2|2 ad
the pressure belt 232, as before described.
justed to proper height by the means above de
Operating in this manner, the part of the lat
scribed, thepressure belt 232 holds. the cartons eral side of the carton A scrapes from the pe
firmly thereon.
riphery‘of the disk 243 a portion of the material
Midway between the two pairs of sprocket B carried thereby, first taking some of this ma
wheels 205, reservoirs 238 are fixed to the table terial B onto the advanced side of the corner a 45
20| by foot extensions 238a, one reservoir at the at the meeting of the bottom b, transverse side c
front and the other at the rear ‘of the chains 2|0. and lateral side d. This material also covers the
Each reservoir 238 has a spout-like extension 239 edge e of the joints between the carton flaps, and
on its left side next to its top, and on its side the ñnal portion scraped from the disk 243 pro
next to the chain 2|0 has a boss 240 next to its trudes slightly past the opposite corner f at the
bottom, and on its outer side, away from ther meeting of the bottom b, opposite transverse side
chains 2|0, has an ear 24| extending up from its g and the lateral side d; The Scrapers 256 and
top, below which, in its wall, is a horizontal slot 258 scrape all but a thin coating of the material
242. In each reservoir 238 a. disk 243 is fixed on a from the bottom b and side d,_res'pectively, and,
shaft 244 journaled transversely in the left and the narrower intermediate scraper 251 bears its 55
right hand walls of the reservoir and extending upper corner to the carton corner a, then along
out to the> right and having fixed on it a spur the joint edge e, and finally springs inward past
gear 245 meshing with a spur gear 24B turning the following corner f. It thus distributes the
on a stud 241 in the respective boss 240. These material around the corners a and f, and the
latter gears 246 of the two reservoirs mesh to
protrusion of the material into the small openings 60
gether as clearly seen in Fig. 11, so that the two at these corners, before mentioned, is insured
disks 243 are operatively connected for rotation- by the pressure of the scraper 251,' which ,also
of each disk over toward the chains 2|0. At the better scrapes the slight yrecess along the joint
rear, a spur pinion 248 meshes with the disk gear edge e to remove material that might have gath
245 and is fixed on a shaft 24.9 journaled inI bear
ered therein to come therefrom after the carton 65
ings 250 ñxed on the table 20|. Fixed on the has left the Scrapers. It will be seen that the two
other end of the shaft 249 is the bevel pinion 25|y reservoir devices thus operate on the two lower
in mesh with the bevel gear 209 -of the -right hand lateral edge parts of a carton simultaneously,
sprocket wheel shaft 204, and before mentioned, completing the final sealing of that end of the
which, driven by the chains 2|0 from the left carton as it is carried along.
hand shaft 203, drives thev disks 243 in the proper
This operation may be upon the bottom of an
directions as above explained.
open-topped carton either before or after the
- For each disk 243 a scraper blade .252 extends
carton has received its contents; or the carton
in through the reservoir wall slot 242, being may have been filled and hadr its top also closed
forked at its inner end to straddle the periphery before coming to my apparatus. After this oper 75
stretch of the pressure belt 232 by springs 231,
one of which is stretched from each arm 235
2381) for the screws, so that each reservoir 238 -
may be adjusted toward or away from the chains
ation upon one end, therefore, it passes to the
left hand end of the bed bar v2|2, from which it
may pass- to the ñlling device if it was empty, or
means _for diverting the application of the said
medium substantially to the corners and edges of
said closure ñaps.
if ñlled but not closed, to the closing device which- A '
6. A machine for use in combination with a
folds ~and secures the top ñaps.' If-passed to a machine provided with means for folding flexible
filler, it then passes to the top closing device. In Í parts of .cartons wherein crevices are formed ad
_ either case, after its top- is closed and adhesively jacent to said ufolded parts comprising 4a con
tinuously operative carton conveyor, and me
secured by such device, the carton may be re
1 \`turned to my device, inverted,- and thereupon chanical means ofor forcing plugging and sealing
medium into the crevices at the lower corner
10 have this other -end subjected to the above’ de
scribed operations according to my method; or edges thereof _during the continuous conveying
another set of my apparatus may be arranged to of said cartons, said means comprising a supply
receive the inverted carton from the final closing reservoir for said medium., and means for forc
vdevice-to repeat the operations on this other end. ingsaid medium therefrom into the crevices of
If the carton is to be completely closed and her -said folded parts, comprising an adhesive feeding
metically sealed for filling by an air exclusion roller mounted on an axis which extends sub
`process as- before referred to, it has both of its stantially parallel with the plane of movement
ends subjected to my process in the manner of said conveyor.
7.-A machine for _use in combination with a
described, upon coming'from the device that
lcloses`its two ends. The material B used from machine provided with means for folding' flexible
the reservoirs 238 may be like that with which the parts of cartons wherein crevices are formed ad
paper board of the carton is coated, but of course jacent to -said folded parts comprising a con
this is not essential, as any of the usual adhesives tinuously loperative carton conveyor, 'and me
used in securing the flaps maybe used.
l chanical means for ‘forcing plugging and sealing
Various other examples Íof apparatus suitable medium into the crevices at the lower corner
for carrying out'my method might be shown, andv -edges thereof during the continuous conveying
it is to be understood that I am not limited to the
examples shown, but`what I claim as new and
desire to secure by Letters Patent, is:-‘
1. Apparatus for sealing cartons comprising a
sealing fluid vliquid supply'holder, a disc rotating
in said holder to carry fluid on its periphery out
of said holder, and a conveyor movable in a plane
. parallel with. the axis of said disc for carrying
of said cartons, said means comprising a supply ‘
reservoir for said medium, means for forcing said
„medium therefrom into the crevices of said folded
parts, and means for shielding said medium from 30
uncreviced portions of said cartons.
8. A machine for use in combination with a
machine provided with means for folding flexible
parts of'cartons wherein crevices are formed ad
35 cartons past said disc withtheir lower corners . jacent to said folded parts comprising a con
sufliciently close to said’periphery to receive a tinuously operative carton lconveyor, mechanical ,
means for forcing plugging and sealing medium
portion -of the sealing fluid therefrom.
»2. Apparatus lfor sealing cartons comprising> into the crevices at'the lower corner edges there- _
of during the continuous conveying of said car
tons, said means comprising a coating roller 40
corner of eachcarton passes in contact with a mounted onan axis which extends parallel to
the plane of4 movement' of said conveyorl and
portion 'of the fluid, scrapers independently mov
able-and in the paths of the respectivel surfaces' means for applying pressure to said cartonsv
of -the carton adjacent to- said corner, :and -'a counter to the direction in which the said
third scraper movable independently of the other medium is forced into the crevices. _
9. A machine for use in combinationwith a
,two scrapers and in the path of said corner.
3. A machine .for hermetically`sea1ing crevices machine provided with means for folding flexible
in closed cartons- occurringy along the 'meeting parts of cartons wherein crevices are formed ad
jacent to said folded“"parts«’comprising a con
edges of closure flaps of said_cartons, which com
Prisesymeans for moving cartons in a direction tinuously operative carton conveyor, and me 50
parallel with the edges thereof, and mechanical chanical lmeans for forcing plugging and sealing
means for >forcing _a sealing medium crosswise of medium into the crevices during the continuous
conveying of ‘said cartons, said means compris
said edges into said crevices during the move
ing a supply reservoir for said medium, means
ment thereof, and means for restricting the forc
ing of lthe sealing medium 'said for forcing said medium therefrom into the 55
crevices of said folded parts, means for shield-l
a holder forsealing fluid, a conveyor for carrying
40 cartons with respect to. said holder so that a
_ »
v-i. A.v machine for hermetically sealing crevices'
ing said medium from uncreviced portions of said
edgesof .closure naps of said cartons, which com
ao prises means’for moving cartons in a direction
_parallel with the edges thereof, and mechanical
applications of the plugging and sealing adhesive.
' .in closed cartons occurringalong the meeting cartons, and means 1 for l» wiping off excessive
" means _for forcing a sealing medium crosswise of
vsaid- edges into said_crevices during the move
I ment thereof, means for Arestricting the forcing
of ‘the sealing medium.- exclusively to said edges,
and means for exerting pressure against the sides
of the cartons opposite to the edges having the
crevices into which the adhesive is forced. i
5. A machine forhermetically sealing cartons
inA which ‘crevices are developed along the .edges
and 'corners incident to the sealing of closure
naps of said cartons comprising a conveyor for
continuously 4moving cartons, mechanical means
>-for applying plugging and sealing medium into
the crevices during the movement thereof. and
10. A machine for use in combination with a 60
machine provided with ~means for folding flexible
parts ofcartons wherein crevices are formed ad
c jacent to said folded parts, comprising me
chanical means for forcing sealing and plugging
medium into the crevices incident to successive 65
l'conveying movement of cartons one after _ an
other, and means for shielding said medium from
Auncreviced portions of said cartons.
1l. A machine for use in combination with a
carton conveying machine provided with means
lfor foldingl ñexible parts of cartons during the
conveying movement wherein crevices ar'e formed
adjacent tol said folded parts, comprising mechan
ical means for forcing sealing and plugging medi
um at right angles to their direction of movement
into the crevices at the lower corner edges thereof
incident to successive conveying movement of
cartons one after another, and means for apply
ing pressure to said cartons counter to the direc
tion in which the said medium is forced into the
‘ 12. A machine for use in combination with a
machine provided with means for folding flexible
parts of cartons wherein crevices are formed ad
jacent to saidy folded parts, comprising me
chanical means for forcing sealing and plugging
medium into the crevices incident to successive
conveying movement of cartons one after an
other, means for shielding said medium from un
creviced portions of said cartons, and means
for wiping off excessive applications of the plug-`
ging and sealing medium..
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