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Патент USA US2116259

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May 3, 1938.
l.. BENOIT ET Al.
‘
SEALING ME’CHANISM
Flled June 8, 1936
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2,116,259
4 Sheets-Sheet 1
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L. BENCH Er AL
2,116,259
SEALING MECHANISM
Filed June 8, 1936
4 Sheets-Sheet 24
May 3, 1938.
2,116,259
L. BENOIT Er AL
SEALING MECHANI SM
Filed June 8, >1956
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4 Sheets-Sheet 3
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May 3, 1938. .
L. BENolT grr AL
2,116,259
SEALING >MECHANISM
Filed June 8, 1956
4 Sheets-Sheet 4
2,116,259
Patented May 3, 1938
UNiTE D1 STÀTES
PATENT ermee
2,116,259/
SEALING MECIHANISM
Leon Benoit, New York, N. Y., and Clifford C.
Moth, Tenañy, N. J.; said Moth assigner to said
Benoit
V¿implication June s, 1936, serial No. 84,152
5 Claims.
The -device of the present invention in the form
`shown is particularly designed for use in con
junction with a carton closing machine of the
cnU
type illustrated in a copending application, Serial
No. 81,208, ñled May 22, 1936, although the pres
ent sealing mechanism may be otherwise em
ployed, either in conjunction with carton closing
accurately, uniformly and rapidly, irrespective of
mechanism or for the purpose of sealing cartons
the speed with which the cartons are delivered.
Further objects and details will appear from
closed by hand, or for the application of stamps,
"in seals or the like, to cartons, boxes, or other ob
jects generally.
walls each terminating in a cover flap adapted
to be folded inwardly and downwardly to over
ierred to;
structed as to pro-vide a carton body having side
lie the carton body. Each of the cover flaps ter
ininates in a marginal tucking flap, and when
inwardly toward the sealing mechanism‘irom the
discharge end and toward the procession of on
Contact with one another along the longitudinal
Fig. 3 is a detail of the star wheel and the
restoring ydevice for resetting the same in the
center partition which is afforded by folding the
carton body along the longitudinal center. The
carton body itself affords two trough-shaped
compartments which are divided into cells by the
Thesealing machine is designed to be actuated
by the passage of each carton in a procession of
iilled cartons and to feed’ downwardly a section
of gummed tape from a` roll and to sever the sec
tion and apply the same to the joint or seam af
4:0
l
Fig. 2 is an end elevation of the same looking
closed the two tucking naps extend downwardly
in vertical relation to the carton body and in
-provision 'of vertical cross partitions which are
entered through slots in the trough-shaped di
visions of the body with which they interlock.
The bases of the cross partitions extend below
30 the body walls and furnish the base upon which
the carton is supported, and the cross partitions
also aiïord cross abutments for actuating the
feeding mechanism of the present sealing appa-V
ratus in the manner to be hereafter described.
135
a description of the invention in conjunctionwith <
the accompanying drawings, wherein,”
Figure 1 is a side elevation of the invention
showing the‘same mounted upon the terminus
of a carton closing machine of the character cle
scribed in the copending application above re~ 15
`The mechanism is designed primarily to seal‘
the cover llaps of an egg carton which is so con
"25
application through a strip of wicking to the
gummed surface of the tape.
'The invention is also directed to the correlating
and timing of the mechanisms provided for feed
ing, cutting“ and applying the severed sealing “ Ul
strips so that the sealing operations will proceed
forded between the turned down tucking flaps,
the arrangement being such that each carton
upon its arrival will initiate >and complete the
cycle of sealing operations, after which the seal
ing mechanism will stand idle until the arrival
45 of the next succeeding carton.
The invention also includes means for restor
ing the sealing mechanism to its normal idle
position in the event that it should get out of step
for any reason, which is a highly desirable fea
ture in order to insure the application of the
seals uniformly to the intended position upon
the carton.
The invention also includes means
for moistening the adhesive and for regulating
55 the supply of water to the moistening bath for
coming cartons;
Y
event it gets out of step;
Fig. 4 is a similar View showing the parts in
a different operative position;
25
Fig. 5 is a detail taken on line 5 of Fig. 2 show
ing the presser roller for exerting pressure upon
the sealing strip applied to the carton;
Fig. 6 is a sectional elevation through the cen
ter of the sealing mechanism; and
30
Fig. '7 is a detail showing the cutting knife and
associated parts for operating the same.
The sealing mechanism of the present inven
tion is mounted at the terminus of the closing
machine and is suitably supported upon bed
plates In, It] which stand in spaced relation to
one another and project outwardly beyond the
framework I l of the closing machine, although
the sealing mechanism might obviously be sup
ported in 'any suitable or convenient manner.
The cartons are fed to the sealing machine by
means of an endless. chain conveyor I2 having
outstanding teeth or lugs I3, which in the pres
ent instance are suitably spaced to act upon alter
nate cross partitions M of the cartons. The car
tons rest upon suitably driven conveyor belts I5
so that the advance of- the cartons will be occa
sioned by the` positive action of the teeth or
lugs I3 supplemented by the conveying action of
the belts I5~ The conveyor chain I2 passes 50
around a sprocket wheel I6 which is power
driven either directly or through the- mediation
of the sprocket chain I2. The bed plates Il] are
suitably spaced to permit the teeth or lugs I3 on
the upper turn of the conveyor chain I2 to pro 65
2
2,116,259
ject upwardly in position to engage the cross walls
I 4, and immediately in advance of the sprocket I6
is located a star wheel I1 having seven teeth I8
so spaced as to be engaged by the seven cross
UI partitions I4 of the carton.
It will be noted from Fig. 2 that the carton is
provided with a body I9 which is bent or folded to
50 passes under the roller 53 and the spring 51
draws the arm 54 forward to release the knife.
The star wheel shaft 23 at its opposite end car
ries a cam 58 operating upon a roller 58 carried
by an arm 60 slotted at its lower` end 6I to em
brace the shaft 23. The upper end of the arm 60
is pivoted to a swinging arm 62 freely mounted
upon a shaft 63 to which the feed roll 35 is keyed.
furnish two trough-shaped channels separated
by a center partition 20 and that the cover flaps rI‘he shaft is provided with a ratchet wheel 64 co
acting with a dog 65 pivoted upon the end of the 10
10 2| are each provided with a marginal tucking
flap 22 which are tucked downwardly into the . swinging arm 62 and spring pressed to engage the
teeth of the ratchet 64 for imparting a limited ro
carton body within the space adjacent to the lon
gitudinal partition 28. The configuration is one tation to the shaft 63. The arm 60 acts against
which permits the exposed centers of the cross the tension of a spring 66.
The cam 58 in its relation to the swing of the
15 partitions I4'to engage the teeth of the star wheel
arm 62 is computed to gradually feed forward
and impart the necessary motion thereto to ac
the gummed section of the intended length in ad
tuate the sealing mechanisms now to be de
vance of the release of the knife 44, and thereaf
scribed.
The star wheel I1 is mounted upon a shaft 23 ter, upon the restoration of the knife, to continue
journalled within brackets 24 hung from the bed the feeding operation suñîciently to bring the ter 20
plates I8. The bed plates furnish a support for minus of the gummed strip beneath the guide rod
spaced standards 25, which constitute the frame 41 in preparation for the next succeeding feed
for the sealing mechanism. The standards -at ing and cutting operation.
The wicking sw-ab 49 projects outwardly
their outer ends 26 are bifurcated to afford
through the forward wall 61 of a tank 68 having 25
25 mountings for the reduced ends 21 of a spindle 28
which carries a spool 2S upon which is mounted a
roll 30 of adherent tape. The roll is supported
`upon a pair of rollers 3l journalled at the ends of
cross arms 32 on the standards and suitably
30 spaced to support the tape roll 30 so that as the
roll is depleted the spindle 28 will work down
wardly through the slotted ends 26 without in
terfering with the feeding of the strip from the
roll.
35
The strip is carried outwardly around a guide
rail 33 and along the surface of an inclined guide
plate 34, and through the bite of a feed roll 35 and
a serrated idle presser roll 36, which roll is
mounted upon a shaft 31 carried by spring bars
40 38, each of which at its upper end is secured to
a block 36 supported by the guide plate 34. The
blocks 39 also afford a mounting for shoulder
screws 48 which pivot a swinging yoke 4I of in
verted U-formation having side arms 42 and an
45 inverted cross head 43 carrying a serrated knife
44 which operates through a cross slot 45 in the
guide plate 34. The blocks afford a mounting for
a guide bar 48a under which the strip is carried.
The guide plate is also provided with an aperture
46 through which the surface of the feed roll
35 projects, and immediately below the cutting
aperture 45 is located a cross guide bar 41 which
serves to hold the sealing strip in position against
the surface of the guide plate 34. TheV lower end
of the sealing strip is carried beneath a presser
roll 48 which is positioned to press down the sev
ered strip section upon the surface of the car
ton. Before delivery to the carton, however, the
gummed strip is moistened by contact with the
60 outwardly projecting end of a swab of wicking 49,
which is moistened in a manner presently to be
described.
The feed roll 35 and the knife 44 are both posi
tively actuated through transmission mechanism
65 in train with the star wheel shaft 23. The means
for actuating the knife comprises a cam 58 hav
ing a maximum elevation 5| andn an abrupt
shoulder 52. The cam bears upon a roller 53 car
ried by an arm 54 which is Slotted at its lower
70 end 55 to embrace the shaft 23. The upper end
of the arm 54 is pivoted to a bracket arm 56 car
ried by the swinging yoke 4I, and the arm is
drawn inwardly by the action of a spring 51.
This arrangement affords a sudden cutting move
75 ment to the knife as the shoulder 52 of the cam
a well 59. The wicking is supported upon an in
clined plate 18, and the well receives the lower
end of a supply pipe 1I which at its upper end
receives the inverted mouth of a globe shaped
bottle 12 carried by a suitable holder 13, the bottle 30
being held in place by a spring arm 14. The
arrangement is one which limits the feeding from
the bottle, which constitutes a -reserve reservoir,
since the feeding will cease as soon as the water
level rises sufficiently to immerse the discharge 35
end of the tube 1I, thereby preventing ingress of
air upwardly into the bottle. The inner end of
the wicking swab is thus immersed to the in
tended degree to draw up the amount of moisture
necessary to moisten the gummed strip as it is 40
carried downwardly in contact with the end of the
wicking swab.
The roller 48 is carried by arms 15 projecting
inwardly from a cross rod 16 carried by standards
11. The rod has mounted thereon a yoke 18
having a finger 16 which embraces a pin 88 pro
jecting from one of the standards 11, which pin
mounts a spring _8l adapted to be regulated by
lock nuts 52, the arrangement being such as to
positively limit the down swinging movement of 50
the yoke 18 and thus limit the downward pressure
of the roller 48. The upward movement will be
resisted by the spring 8l which when properly ad
justed serves to impart the desired pressure to
the severed section of the sealing strip to seal
the same upon the carton as the latter passes
beneath the roller 48.
If by any chance the strip feeding mecha
nism should get out of step with the advance of
the cartons, unless corrected this would have the 60
effect of applying the seal at the wrong point on
the carton, and provision is made to correct such
pcssible mal-adjustment of the parts by the
means now to be described.
The star wheel shaft 23 has keyed thereon a
mutilated ratchet wheel 83 having at one point in
its periphery a plane section 84. 'I'he ratchet
wheel coacts with a dog 85 carried by a swinging
arm 86 loosely mounted on the shaft, the dog be
ing held in engagement with the ratchet teeth by 70
a spring 81. The swinging arm 86 has pivoted
thereto a rocking arm 88 which is slotted at its
opposite end 89 to embrace the shaft 90 which
carries the conveyor sprocket I6 and which is
constantly driven at uniform speed during the 75
A2,116,259
operation of the Ímachine.
The shaft 90 has
keyed thereon a >star shaped cam 9|A having, as
shown, four rounded arms 92 which bear against
a roller 93‘on the rocking arm 88 and serve'to
advance » the
spring 94.
`
arm
against the
tension
of
a
Y
The projection ofthe ratchet teeth is such as
to permit them to slip past` the dog 85 during
the normal rotation of the star wheel Il» when
10 carried around by the advance ofthe carton. If
3
which the sealed carton passes to the discharge
end of the machine and is removed.
By utilizing the carton itself as the means for
actuating the sealing mechanism, and by provid
ing means to effect a restoration of the parts to
normal position in the event of mal-adjustment,
an accurate sealing of the cartons can be se
cured at all times irrespective of the speed of
arrival 'or the speed of passage through the ma
chine.
'10
Although the mechanism has been described
the star wheel and associated parts-are properly
in step, the final passage of the carton will bring with particular reference to the sealing of a car
the plane section 84 of the ratchet wheel around ton having `cross partitions of the character
to the point of contact with the dog 85, so that shown, it is not the intention to limit the inven
15 the latter will Vreciprocate idly upon the plane
tion in any way to the sealing of cartons of this surface thus presented. If, however, the passage 'particular character, since the mechanism can be
ofthe carton should leave the star wheel and employed for the application of seals, stamps, or
associated parts out of proper position with rela
other gummed stickers, to boxes or other articles
tion to the coacting cartons, a toothed portion adapted to be fed through the machine, particu
of the ratchet wheel 83 will `be presented to the larly when the same are adapted, `by reason of
dog 85, so that the reciprocation of the dog will ' ‘their configuration, to initiate the train of opera f20
turn the star wheel shaft 23 to the degree neces
tions required in feeding, moistening, cutting and
sary to bring the plane section around to the dog applying the seals to the objects thus fed through
and thus restore the parts to their intended posi
the machine, so that, unless otherwise indicated,
25 tion so that the next succeeding carton will feed
it will be understood that in referring to cartons
and‘apply the seal at the intended point.
we have in mind other forms of receptacles or
By the provision of the restoring mechanism, objects having the required form or configuration
therefore, the operation of the star wheel is' so to be acted upon in accordance with the principles
regulated th-at it will always be set to uniform of the present invention.
30 position in advance of the arrival of an oncoming
We claim:
Y
"30
carton. During the passage of a carton, the
1. In a sealing mechanism, the combination of
dog 85 in engagement with a ratchet tooth will, vmeans for advancing an object to be sealed, means
on its active movements, follow‘the tooth around for sup-porting an adhesive strip, devices for feed
at the same rate of travel, and on its return ing a predetermined section of said strip to the
movements will slip idly over the ratchet teeth, so object to be sealed with each actuation of the T35
that the dog only becomes functionally active in mechanism, a moistening device located at a
case the ratchet'wheel `should stop rotating at a point between the feeding devices and the means
point at which the dog engages a ratchet tooth for advancing the object for supplying moisture to
during its active swing, in which event it will im
a previously umnoistened section of the strip dur
40 part a restoring movement to the shaft 23 in
ing its advancement to the sealing position, means
the amount required' to bring the shaft around for severing the advanced section at a point be
to its normal position.
tween the feeding and moistening devices, a mem
ber adapted to be engaged and have motion im
Operation
45
The operation of the device may be briefly parted thereto by the passage of an object to be
sealed, and mechanisms operated by power im
summarized as> follows: The filled cartons will be parted by said moving member for actuating the 45
positively advanced to the sealing position by the
engagement of the teeth or lugs I3 with the cross
partitions of the carton, assisted by the carrier
50 belts l5 upon which the base of the carton rests.
During such advancement the alternate cross
partitions of the carton will encounter the teeth
of the star wheel and impart a definite or com
strip feeding and severing devices in timed rela
tion to feed the leading end of the strip to a posi
tion to secure adherent contact with the advanc
ing object ‘before the severing mechanisms are 50
actuated and to thereafter again feed the lead
ing edge of the unsevered strip to a position below
severing devices in preparation for the next
puted degree of rotation to the star wheel shaft. « the
cycle of operations.
This turns the cams 5| :and 59 to the degree re
2. In a sealing mechanism, the combination of 55
quired to ñrst feed down a section of the
means for advancing an object to be sealed, means
gummed strip of the intended length and there
after suddenly release the knife or cutter 44 for supporting an adhesive strip, devices for feed
ing a predetermined section of said strip to the
which severs the sealing section from the re
object to be sealed with each actuation of the
GO mainder of the strip.
mechanism,
a moistening device located between 60
During the down feeding of the strip it will be
moistened by the wicking swab 49 and its leading the feeding devices and the means for advancing
edge will be brought into contact with the top the object for supplying moisture to a previously
unmoistened section of the strip during its ad
surface of the advancing carton, thereby caus
ing an adherent contact to be established at the vancement to the sealing position, means forinstant the gummed sealing section passes under severing the advanced section at a point between 65
the roll 48. At this instant the knife will descend the feeding and moistening devices, a rotatably
and sever the section, which will thus be drawn mounted member adapted to be engaged by the
passage of an object to be sealed, and mechanisms
_ down by the advancement of the carton and press
in train therewith'and adapted to be operated by
70 down onto the surface to effect the sealing opera
tion. After the knife has been withdrawn, the the rotation thereof for imparting feeding and 70
feeding of the main sealing strip will continue severing movements to the feeding and severing
slightly until its leading edge has been brought mechanisms in timed relation to feed the leading
end of the strip to a position to secure adherent
beneath the guide rod 4l', which concludes the ‘
75 operations performed by the mechanism, after >contact with the advancing object before the
severing mechanisms are actuated.
75
2,116,259
4
3. In a sealing mechanism, the combination of
means for advancing an obj ect to be sealed, means
for supporting an adhesive strip, devices for feed
ing a predetermined section of said strip to the
object to be sealed with each actuation of the
mechanism, a moistening device located between
the feeding devices and the means for advancing
the object for supplying moisture to a previously
unmoistened section of the strip during its ad
10 vancement to the sealing position, means for
severing the advanced section at a point between
the feeding and moistening devices, a rotatable
star wheel having teeth adapted to be engaged by
the object being sealed, cams operated by the ro
15 tation of the star wheel, and connections between
said cams and the strip feeding and severing
mechanisms respectively for operating said mech
anisms by movements imparted to the star wheel
and in timed relation to feed the leading end of
20 the strip to a position to secure adherent contact
with the advancing object before the severing
mechanisms are actuated.
>
4. In a sealing mechanism, the combination of
means for advancing an object to be sealed, means
25 for supporting an adhesive strip, devices for feed
ing a predetermined section of said strip to the
object to be sealed with each actuation of the
mechanism, a moistening device located between
the feeding devices and the means for advancing
30 the object for supplying moisture to a previously
unmoistened section of the strip during its ad
vancement to the sealing position, means for
severing the advanced section at a point be
tween the feeding and moistening devices, a ro
35 tatable star wheel having teeth adapted to be
ing end of the strip to a position to secure ad
herent contact with the advancing object before
the severing mechanisms are actuated, and con
stantly actuated restoring mechanisms adapted to
restore the star wheel to normal position in the
event of mal-adjustment.
5. In a sealing mechanism, the combination of
means for advancing an object to be sealed,
means for supporting an adhesive strip, devices
for feeding a predetermined section of said strip
to the object to be sealed with each actuation of
the mechanism, a moistening device located be
tween the feeding devices and the means for ad
vancing the object for supplying moisture to a
previously unmoistened section of the strip dur
ing its advancement to the sealing position, means
for severing the advanced section at a point be
tween the feeding and moistening devices, a ro
tatable star wheel having teeth adapted to be en
gaged by the object being sealed, cams operated
by the rotation of the star wheel, connections be
tween said cams and the strip feeding and sever
ing mechanisms respectively for operating said
mechanisms by movements imparted to the star
wheel and in timed relation to feed the leading
end of the strip to a position to secure adherent
contact with the advancing object before the
severing mechanisms are actuated, a restoring
mechanism comprising a rocking arm and means
for imparting constant rocking movements there
to, a dog actuated by the rocking arm, and a
ratchet having fixed relation to the star wheel and
provided With a smooth section adapted to permit
idle reciprocation of the dog'when the star wheel
stands in normal position and to permit effective `
engaged by the object being sealed, cams oper
engagement between the dog and the ratchet to
ated by the rotation of the star wheel, connec
tions between said cams and the strip feeding and
tended step with the obj ects to be sealed.
severing mechanisms respectively for operating
40 said mechanisms by movements imparted to the
star wheel and in timed relation to feed the lead
occur when the star wheel gets out of its in
LEON BENOIT.
CLIFFORD C. MOTH.
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