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Jan. 18; 1949.
Filed Feb. 7, 1947
4 Sheets-Sheet 1
demon H 5566/1
Jan. 18, 1949. >
s. H.' BERCH'
' Filed Feb. 7, 1947v
4 Sheets-Sheet 2 >
Same/:4 Hf 55605’
Jan. 18, 1949.
Filed Feb. '7, 1947
_4 Sheets-Sheet_ 3
Jan. 18, 1949.
Filed Feb. ' '7, ‘1947
4 Sheets-Sheet 4
- 5/9/7054 H 5520”.
Patented Jan. 18, 1949
unite-D srArEs PATENT‘ oFFicE
Samuel H. B'erch, Beverly Hills, Galii,‘ assignor to
Arden‘Farms-Cm, Los Angeles, Caliit, a corpo
ration of‘ Delaware‘
Application February 7, 1947', Serial'No. 72.7366‘
11 Claims. (or. 93.;2)‘
This‘ invention relates to‘ a" dispensing device,
and?" particularly pertains to a carton opener.
In‘ merchandising products, and especially in
merchandising ice cream, 'fcldable cartons have
been provided intowh-ich the ice cream is placed
asemii-pl‘astio state to» ?ll the carton, and after
which the carton with its product is "refrigerated ‘
to solidify the ice creamfor' merchandising pur
carton particularly adapted to this pur
carton, after which mechanically driven and lop
erated ?ngers engageother portions of the carton '
to cooperate with the receiving means in pulling
the ‘side walls ofithe- carton away from the sides
of the mass of frozen material‘to which- they have ‘
. adhered.
The invention is illustrated by way'of example
in the accompanying- drawings in? which: »
Figure I is a view‘ in end elevation'showing the‘
pose is shown in a co-pending' application ?led 10 carton‘ opening ‘machine with which the present
by Samuel‘ H. B‘ercheon Qctobér 31, 1944, entitled
invention- is concerned.
“Carton for ice cream and the like,”v and bearing '
Fig. 2v isa view‘ in side.- elevation showing the
carton opening machine:
Serial No. 56-13235, now Patent No. 2,443,530,
granted June I15‘, I948; A machine for forming
Fig; 3*is a. vi'ewin verti'cal'secti'on through the
the cartons, ?lling them, and’cl'osing them,» has 15 carton opening machine as: seen‘ on'the line 343
been shown in an application filed by Samuel
of Fig. 2.
H. Berchl on November 28, 1945-, entitled “Pack
‘Fig. 4' is a View in vertical section‘ through the
carton opening machine as-seen on the linev 4-6
aging machine for ice‘cream and'ithe like,” bear—
of Fig. I.
ing Serial No. 631,331’. These cartons and the‘
Fig. 5. is an. enlarged: fragmentary‘ view in ver
machine were designed tolbe used in a sales cam 20
paign whereby relatively small'quantities' of ice : ' tical' section as: seen on. the. line 5-5‘ of Fig. 1' .
and’ shows a carton
position. therein.
cream could be merchandised for home consump
tion or.“ for use in soda fountains and restaurants,
Fig. 6‘ isv an enlarged fragmentary View in ver
the idea being that the quantity‘ of ice cream
tical section showing the carton. receiving means i
> '
wouldS represent one hel'ping,- which could‘be' 25 as seen 011* the line 6--6 of Fig. 5.
Fig; 7 is‘an enlarged fragmentary view in ele
served individually or placed‘ in ice cream sodas,
malted? milks, and'the like. The particular car
an. initial
the: carton
ton is designed so that‘ when its sealing ?ap is i
8- is an. enlarged fragmentary view of the.
opened? it is possible for the front-side wall of
the carton to be‘ grasped while the sealing ?ap 30 carton receiving means as seen. at» right angles to
the' view shown
Fig. '1.
isvgrasped to permit the side gusset's on the carton
Fig. 9 is a view showing the structure» indi-v
to unfold and completely'uncover'the"frozen cube‘
cated in. Fig. 8 with the carton.- partially unfolded.
of ice‘ cream as the cover ?ap and the front wall
are pulled in opposite" directions from each other.
Fig. 10 is a View
end. elevation as seen‘ on the
This operation takes place satisfactorily" under"
line l0.—l0. of Fig. 9: and shows the initial spread
normal conditions of storage refrigeration; ‘How
ing position of the spreading ?ngers.
ever, in the freezing cabinets used byi'soda foun
Fig. l]. is a fragmentary view in elevation show-
ing. the parts indicated in Fig. 10 and disclosing
at such a low temperature that the side walls
the spreading ?ngers in their ?nal position.
Fig. l2ris. a fragmentary view in elevationtaken
of the carton adhere ?rmly to the mass'of frozen 40
tains and‘ restaurants the products are maintained
product. It is desirable, therefore, to provide a
simple and convenient machine for mechanically
opening‘ said cartons‘so that the cube of frozen
product may be dropped onto a plate‘ or into a
at right angles to the View shown in Fig. 11 and
indicates. the carton. in its ?nal spreaded position ‘
and the. product.‘ ready to be discharged.
Fig. 131s. an enlarged transverse View in hori
glass. It is the principal object of’ the‘ present 45 zontal section. showing , the mounting of the
spreading ?ngers. as seen onthe line l3—.l3-- of
invention, therefore, to provide a relatively ‘small
Fig. 3.
device into which individual ?lled cartons of the
Fig. 14 is an enlarged fragmentary View in
foldable type may be placed, and which machine’
section as seen on the line M-M» of Fig. 13 and.
will act automatically to" open the ‘carton and to’
forcibly separate the carton walls" from the mass 50 shows the rack and pinion structure for operating
the spreading. ?ngers.
of‘ frozen product without wasting theproduct.
Referring more particularly to the drawings, .
The present invention contemplatesnthr'e provi
sionv of a base structure carrying; receiving means‘
into which a folded‘carton may be placed, said
35. indicates a base structure here shown as being.
box-like and having a bottomwall [6, side walls
receiving means engaging‘ certain sides of the 65 I ‘land It and end. walls l9.’ and.- 20. Mounted
across the top of these walls is a top plate 2|.
of operating levers 62 and 63. The lever 62 has
a vertical portion extending downwardly and
parallel to the side wall 49. These levers extend
through an opening 64 in the cover 2| of the
housing, At a point beneath the opening 64 the
lever 62 is bent and extends to a mounting
bracket65 carried by the housing wall 20 and
pivoted tothe arm by a pin 66. Thelever arm
Disposed at opposite edges of the top plate 2|
and substantially midway the length thereof are
a pair of vertical standards 22. ‘These standards
are spaced a distance apart substantially equal
to the width of the base and carry a pair of
spreading ?ngers 23 which aremounted on‘hori
zontal pivot v. pins 24.’~ As shown in‘ Fig. '13 the,
standards are substantially channel~shaped and
each accommodates a vertically extending gear .10.
rack 25 which meshes with a gear 26. Thegear
is formed with a hub 21 upon which the spread
ing ?ngers 23 are ?xed and with which they ro
tate. The details of construction of the ?ngers
63 has a vertical portion extending downwardly
parallel to the wall 48 to a point below the open
ing‘64 where it is bent to extend oppositely from
the bend of lever 62 and is mounted upon a block
61 by a pivot pin 68. At a point approximately at
the bend of the lever 62 a link 69 is connected by
and their function will be explained hereinafter. 15 a pin‘ 10. The opposite end of the link extends
downwardly at an angle to the vertical and is
The ?ngers are oscillated by vertical reciproca
pivoted to a lift lever ‘H by a pin 12. At the
tion of the gear racks 25. This movement is pro
bend of the lever 83 a link 13 is pivotally con
duced by a mechanism enclosed within the base
nected by a pin 14. This link extends down
housing III. This mechanism includes a lever 28
wardly and outwardlyin an opposite direction
mounted upon a bearing 29 and pivoted thereto from that of the link 69 and is connected to the _
by a pivot pin 38. At a point intermediate the
end of a lever 15 by a pivot pin 16. The levers
ends of each of the levers 28 the lower ends of
complementary gear racks 25 are pivotally ‘con- .
‘H and 15 are mounted upon horizontal pivot pins
1‘! carried by brackets 18. The brackets are
nected thereto by pins 3|. Each of the lever arms
mounted upon the housing wall l'9. Thus, due to‘;
28 carries a cam roller 32, here shown as being
this arrangement the lift levers ‘II and 15 may
disposed between the endof thelever and the
pivot pin 3|. The levers-28 swing vertically and
swing vertically and will in turn cause the levers ‘
62 and 63 to swing toward and away from each
other. Mounted upon the shaft 35 is a pair of;v
are formed in the inner faces of cam discs 34. 30 cams 19 having eccentric cam grooves intheir.
opposing faces. These cams are spaced a disa
The-cam discs are mounted uponia shaft 35>which
tance from each other onthe opposite side of the:
is supported to rotate on a horizontal axis of the
side walls l1 and I8 of the housing structure.
median plane of the machine between the stands the cam rollers-‘32 carried thereon extend into
eccentric cam grooves 33.
Thehcam grooves; 33 I i
Mounted on one end of the shaft 35 is a gear 36
ards 22.
which is ?xed thereto and is in mesh with the $0 in
pinion 31, The pinion 31 is mounted on-a shaft
38 which extends through the side wall ll of the
housing. On the outer end of the shaft 38 is an
rollers 80 which are pivotally mounted upon the
_ operating crank 39 which may be rotated to drive
the shaft 35.
A ‘stop pin 48 .extends inwardly 40
from one face of the gear 36 and may encounter
a lug 4| carried by a spring'?nger 42. A plunger
rod 43 is mounted to reciprocate through an
opening in the wall 3|‘! and engages the spring
?nger 42. The outer end! of the rod 43 is ?tted
with? a knob 44 so that the rod 43 may be forced
inwardly and will move the lug 4| out of the
path of travel of the stop pin 48 to'permit further '
rotation of the gear 36. _
Mounted upon the cover portion 2| of the
housing is an upper extension of-the housing, as
indicated at 45. This upper extension is posi
tioned along the longitudinal center line between
the standards 22. This extension is formed with
opposite side walls 46’and 41 which are equally
spaced from the longitudinal center midway be
Extending into these cam grooves are
levers ‘II and ‘I5 and will thus cause the levers ,
to oscillate vertically as controlled by the cams. ,
This oscillation will cause the guides 52 and 53
to swing upon their horizontal axes, as will be
The guide member 52 extends above the plate
50 a distance greater than the height of the car
ton 5|, as shown in Fig. 5 of the drawings. At
the opposite vertical edges of the guide member
52 are vertical ?anges 8| which are spaced a dis
tance apart slightly, greater than the ‘width of '
the carton 5| so that the carton may slide down
between them. Extending outwardly at the op-;
posite outer sides of the ?anges 8| are wings82.
These wings are substantially triangular in shape
and act as con?ning guides for the sides of the
package as the package is unfolded.’ Formed on .
the inner face of the guide member 52 at a height .
above the horizontal plane of the top of the pack- '
age 5| is a pair of lugs 83. These lugs have square
horizontal faces 84 which are presented down
wardly and are disposed adjacent to the inner
tween the standards and a pair of side walls 48
side-s of the vertical ?ange portions 8|. Pivotally
and 49 which are spaced from eachother and
are disposed at one side of the vertical plane of 60 mounted between the ?anges 8| is a U-shaped
frame member 85 which has a lower horizontal
the standards 22, as shown in Figs. )3 and 4. The
portion and arms ?tting between and extending
supporting structure 45 is ?tted with a horizon
parallel to the ?anges 8|. Pivot pins 86 extend
tally disposed cover 58, upon which a carton, gen
horizontally through the upper ends of the arms‘
erally indicated at 5|, may rest during the var
and through the ?anges 8| and allow the frame
ious ‘operations, to be performed, as hereinafter
described. Extending upwardly from opposite
member 85 to swing horizontally from a position
indicated in Fig. 2 of the drawings to a vertical.
sides of; the supporting structure“ and normally
position as shown in Fig. 5. Spring blades 81 are
in'alignment with Walls_4‘8 and 49' are movable
secured to the frame members 85 and tend to
guides 52 and 53. These guides, are pivoted near
urge the lower ends of the frame members 85
their lower ends upon pins 54 and 55 which are 70 ‘to their outermost positions. Carried upon the
carried by the side walls 46 and 41 of the support
frame members and projecting upwardly tova
45.‘ _ Formed'at the ‘lower ‘ends of the guides 42
point above their axes are blades 88. These
and 43 areextensions '58 and "51, respectively.
blades terminate in an in-turned point 89 which
These extensions carry‘ pivot. pins 58- and‘ 59
will force its way through the wallof the package
which‘ extend through slotted openings 60 and 6| 75 preparatory to a spreading operation.
oil? shaft-35R isrlail cam; roller II 8* which "rests upon»;
theifpeiiimeterfofi'a‘cam' I F9‘; The ca‘m- H SIis fixed.
upon‘: thelshaft' 35' and" is; disposed withia swell.
portion diametrically opposite‘ to't'heswell 'of‘tlie"
4 . carii'groové' 33iinitl'ieicam: 34;
‘In; operation of’ the? present’~ invention, the‘
structure is assembled-as shown’ in Figs. 1 and'2.
and'isIe'ablY'to-re'ceive'iacarton 5.5". The carton‘
5I- as disclosed in" the‘ above~mentioned co-pend
pplic‘atibii', is made'fr-orn' one sheet of paper‘
or" light-weight cardboard. The‘ blank of the‘c'ar
' to‘n‘ issubst'a'r‘itially square and its sides represent
three‘tiines the width of the'?nal‘ carton wallian‘d'
three-“titties the height of the ?nal carton. The
‘ corner‘ ?elds- are scored diagonally so that two
triangular'?elclswill occur andlwill fold over upon
themselves ‘t'o‘ioim'guss'ets and‘ then will fold over
opposite sides‘ of’ the carton. The square ?elds
which represent the opposite side walls, of the
-"~ca’rtonjfro'm those upon which the gussets are
foldedfiare' formed: at their upper edges with a
square'in'ne'r" cover ?eld; and‘ an overlapping cover
last named ?eld has side tangs cle
si‘gn'ed’ to‘ extendv downwardly into the pockets
formed byv the outermost opposite gussets. The
bottom of the" carton formed as previously de
scribed is indicated‘ at lZO; while opposite side
walls‘ covered by‘ the folded'gusset‘s are indicatedv 1
7 ing car?'sliave‘, a pointed‘
_ at’ I‘ZI'I. . The inner a'nd'outer' gussets are indicated -
,?tjea‘ at“ III’I ahdian arcuate 0" at',_l22 and‘ I23, respectively. The top cover vis in
'"tion‘ m2‘: , TheT‘i'nhéiif faeedrftiie'carnj is"
co'iive e511 as i?‘dic‘at‘e'd' at‘ m3 and" the’ faces Hi2
ahifi I113‘v diverge‘ fro'n'iieacli other‘toward the 10w- 7
dicated at I24‘ and the side tangs which extend
into“ the outer gussets I23 are indicated at‘ I25.
cf e‘?djof the s'triictil're to’pr‘oducefa- substan
Theisi'de wall to which the top cover 523 is hinged
is indicated at I26‘, and the opposite side wall is
indicated at I'2‘I. This side wall carries the inner
base‘iportion'of the spreading cam is an inner lug
cev-eriinember I28.
titilf‘tfi'alngiild? cross-section. At theflo'w'e‘r’ ‘or
“itv ‘liaise dates, its \I'IIE with intermediate.
Care must be taken to insert the package into
position between the guide members 52 and 53
withz‘the pivot of__the cam. Acting against the 40% so that-the side Wall‘ I26 is adjacent to the guide
it inwardly a ‘leaf springiIO'I-I is“ member 52 and the- side wall I2‘!- is adjacent to
prdvided. This'spring is ?xed at thev bottom of
the guide member 53. This will place the side
arcuate length III'B, which lengthisfconcentric
the throat o‘f?the member 98. By reference to
walls I2I. with their gussets in a position to be
F1 - 51ft‘ will-:be' seen teat the pointed’ ends I-IJI .
engaged by the spreading'cams 9?.
of» the spreading'cams- 91, are triangular‘ in‘ shape
As the car~
, ton», is moved. downwardly in the direction of the
an‘dyare oi; greater; width than the portion which _ ' " arrow c, as indicated in Figs. 1 and 2, its side
extends downwardly in the fork of__ the members
walls I25 and I21 will- be parallel to the normally '
- vAt; thelower ends ‘if; the: unfold-ingq?ngers; 9.6 v
arekextensionsk Ill-8.: ail-‘he extensionsqillll project -
vertical inner faces of the guide members E52 and
53-,"and; the walls I2I with their gussets will ?t '
below-“the point. of the-pivot M11895 and-carry
,x between andbe parallel to the vertical ?anges
?lscarried by the guide members 52 and 53. As
pigisq??- which: are‘ parallel to the pivot pins 85. i
The pins _ I69 extend through» slotted openings
the carton moves downwardly it will be forced
between the lugs 834 formed upon the guide meme
IEO aim-the upper ends of actuating levers III.
vhers 52 and _53'. This will tend to swing the guide
These: levers ; extend downwardly- through the“, Ur _. members 52 and 53 outwardly and oppositely
around their pivots. As this takes place the
opening.- Qlin; the cover 2I- of the housing-and
each-other to extend to bearing". brackets.
II;2.;~,"_I-‘he brackets I-I-2- are. mounted uponlthe
inner-faces‘ of the-housingwalls I1: and I8. vPivot
pins _. I I3. connect the actuating levers with‘ they
brackets. Adjacent to the point at which the ac
tuatingqleyersvl II‘ cross each other each of, the.
leversvis' ?tted with a pivot pin II_4 whichspa‘sses
through ailink I I5,- it bein-gunderstood-that thei‘c .
aremtwollinlts; one associated with eachot ‘the,
levers. if}, ‘These links eiitend downwardly and
arevbdth» pivotally mounted upon a cylindrical
eigtension hi5" formed at the end’ fa lever/H6.
The ley'er !Ilj extends horizontally and is pivot
ally mounted upon the; horizontal pivotal shaft
‘llkcaiiriedby ‘the brlacliets 118. A tension spring
II‘! esteemed to both- of- the actuating levers
III as {Slahebéhéétth the level‘- H6. and thus '
téndstotliorcfe themuppei" ends. of the ‘actuatinel
leyel‘s- .Ill .lailiiisa-Ilidlif; ll'mlmiéd “19611.31? lever
H6 atev'é and in vertical alignment with the axis
blade’ members 88v will be disposed with their in;
tnrnedpoints presented toward the side walls 526
and I21, and as the carton continues to move
‘ downwardly until it rests upon the supporting
plate 50 the points of the blades will eventually
penetrate the side walls and pass through the slit
they have cut in the side walls I26 and I21. When.
the top of the carton clears the lower horizon~
tal shoulders on the lugs 83 the guide members
52 will resume their parallel vertically aligned
positions as shown in Fig. 5, and the blades will
for substantially half of their length be within
the‘ cartonrand will be forced upwardly along the
‘ carton Wall and‘ between it and the cube of ice
cream contained by the‘ carton. At the same:
time the ?lled carton is moving to the position
shown in Figs. 5 and 6 of the drawings its side.
walls will be moving downwardly with relation
tothe pointed ends IIlI of the spreading cams 9i]
When the triangular point I Ill of the spreading
cams reaches the intersection'of the folded‘ lines
supporting structure 45, as‘shown in Figs-.2 and
of the gussets I22 and I23 the point will be forced
beneath them and upwardly to the position shown
not strike theblock of- materialwhich has vbeen I
in Fig. 6 of the drawings.’
9,--it will be evident ‘that the. ?ngers “23 will not:
-sealed.»»within the package,‘ and which material
~ I
of the arrow 1), as indicated in Fig. 2. This will
rotate the gear pinion 31 in the direction of the
:is indicated by the numeral-I33; -By reference,v
to Fig. 9 it will be seen that when-the guide mem-_
ber 52 has been-moved to its horizontal position,
the blades‘ 88 which penetrated the side wall I25;
arrow c, as indicated in Fig. 4, and will rotate the "
of the-ca'rton-will have-pulled thiswallof thei
The machine is now ready to be operated. This
is done by rotating the crank 39 inthedirection
gear 36 in the direction of the arrow 11, as shown 10' carton downwardly and will have unfoldedthe
gusset I22._ The ?ngers “engage the gusset por- in Fig. 4. The shaft 35 will also rotate in the
direction of the arrow d and at this time the ‘ tionsand as the folding ?ngers 23 swing down-:
cam II9 will act to lift the cam roller I I-8 and to
wardly and outwardly they will tend to pull the
swing the lever IIii upwardly. " When this’ takes‘
side walls I2 Iv away. from theblock o1 productlu;
place the links IE5 which are connected to the 16. so that when the guide member 53 swings ‘down-'7
actuating levers III will cause: the levers III to
wardly tovthe position indicated in Fig.- 12 of. the,
swing outwardly and oppositely in the direction
of the arrows e, as indicated in Fig. 3 of the draw
ings. This at the same time will swing the un
drawing‘ the block of product I33 willonly ad;
here to the side wall~I2'I. "ItJwill beseen thatx
the guidemember 53 swings from a vertical po-h
folding ?ngers 95 outwardly and downwardly, as 20; sition to a position lower than in the horizontal
indicated by the arrows f in Fig. 3 of the draw
plane of the member 50 so thatthe block of prod-v
ings. ‘As these ?ngers swing outwardly‘and down
uctwill~ be presented on aniinclined surface and‘
wardly they will forcefully pull the folded gussets
maybe easily‘ removed therefrom bye-pulling on
H2 and I23 outwardly, and at the same time will
the inner closing member I28. vIt will ‘of course s
'pull away from the cover tangs‘ I25 so that these 25 ,.be understood-that the spreading ?ngers 23 were,
tangs will become disengaged. The position of
“movedto their. lowermost positions by the upward
the gussets after being separated are as indi
movement of the gear racks‘ 25as e?ected by' the:
cated in Figs. '7 and 8 of the drawings. It willbe
cams “and while rotating the pinions 26‘."_W1'ien
seen in Fig. 8 that the gussets I23 have pulled
the operating cranl<39 hasfmoved through'a cy
away from the tangs I25 andthis has allowed, 30 cle to place the parts in the position shown‘ in Fig.
the outer cover member I23 to swing upwardly
12of;the drawing the stop‘ pin' ‘III will have‘ené
to a partially open position.
countered. the lug M on the, springmember 42.
The inner cover
member I28 will at this time be engaged by the
The knob 44 may then be pressed'to move, the
overhanging hook 92 of the catch plate'QIl so that
the product within the cartonv will ‘be temporarily
maintained in a covered condition. It will be
noted that during the movement of the lever II6
lug III clear of thestop pin 40 so that ‘:urther
the unfolding ?ngers 95 will be‘ swung tofa'horig
rotation 'of the‘ structure in the same direction ‘
wilirestorerall of the‘ parts to their‘original nor
maLpositio'ns as illustrated'in Figs. land 2"‘oi' ‘_
the drawings. " e machine
then ready 'Ior‘
zontal position, as shown in Fig. '7 of the draw
It will’operation.
thus bef‘seen ‘ that
the ‘ carton " opening‘,
ings. As the ?ngers 96' move to their horizontal 40
position and after they have disengaged the gus
device here disclosed is small and compact and‘
sets from the cover tangs I25 the’lever arms 'H“
designed so that it“ maybe used convenientlyj'
and 15 will operate. This isjaccomplished by
without'occupying any considerableamount of -
the action of cams ‘I9 in engagement with roll
ers 83 carried by the lever arms TI and‘l5. " This
action will cause the guide plates 52 ‘and 153 to
counter space, and that‘thepackage may be easily
.placed within-thedevice and the product may
be‘ quickly vunwrapped me full mechanical auto;
swing outwardly in sequence. . First, the-guide
plate '52 will swing outwardly and downwardly in
I have shown
' ' 'the preferred
form o! my‘_
the direction of the arrow g, as indicated ih‘Fig.
invention as now known to me, it will be under- '
9, and then the guide plate 53 will swing out-g 50 stood that various changes may be madeim com;- 1
wardly and downwardly in the direction of the
bination,‘ construction ‘and arrangement of parts
arrow h, as indicated in Fig. 9. This sequence
by those skilled in the art, without departing‘
from the'spirit of the invention as claimed. '
of operation is due to the arrangement of the'Iink- ’
age between the levers ‘ii and ‘I5 and the levers
Having‘ thus described my invention, what‘FI‘
62 and 63, as well as a diiierence in the lengths‘ 55 claim and desire to secure by Letters Patent iszi
of the levers and their mountings.‘
-' '
As the guide members 52 and 53 successively
swing to their horizontal positions the'spreading '
?ngers 23 will swing downwardly to engage the
side walls I2I away from which the gussets I22
111A carton opening machine-for use in'r'un
wrapping cartons ?lled with‘ a product, and which "
carton "is made fromv a one-piece blank foldedv
to form a six-sided package having overlapping?‘
gu'ssets ‘on two opposing sides and a cover meml j .
and I23 ‘have been spread. ‘ The spreading ?n
ber formed with a tang “introduced into certain '
gers 23 are substantially hook-shaped.“ They
have a relatively long arm portion I30 which con—
tinues in a portion I3I bent at slightly'greater
of said gussetsto hold the Package sealed; said '
than ninety degrees to the member I30. "This
of guide members at opposite sidesvthereoi' be
tween which the carton is moved onto said'plate,'
portion terminates in a turned ?nger I32 which'
bears an angular relation to the members to in
sure that at the end of the swinging movement
machine comprising a supporting plate‘upon
which the sealed carton may be placed, a pair'
means"associated‘ with said guide members'jfcr
engaging contiguous side walls of the carton
of the spreading ?ngers 23 the‘ outer face-of the
positively, a pair of unfolding’ fingers disposed‘
portions I32 will lie ?at against the sides'of the 70 adjacent to the two remaining opposite‘edges of n
carton and will hold these sides ?at against the
the platform, means carried at the ends thereofj
?at surfaces of the Wings 82 carried by the guide
members 52 and 53, as shown in Fig. 11. ' '
" '
In view of the fact that the position of the
spreading ?ngers 23 is offset from the side of the 76
to pass into. the folds‘ beneath .the gussets, a‘
support for said supporting plate, individual
pivotal connections between‘ each of'the guide '
members and unfolding ?ngers and said support‘;
walls de?ning a square opening, a complementary
opening through the top of said housing and
around which said side walls are arranged, a
horizontally disposed supporting plate at the top
of said supporting structure, said plate substan
tially agreeing in con?guration and dimensions
with the bottom of the carton which is adapted
to rest thereupon, a pair of unfolding ?ngers
pivotally mounted at their lower ends upon said
~ 10.- In,-;a carton opening machine for‘ use iii
unwrapping. cartons ?lled with a product, and
which carton is made from a one-piece blank
folded tov form a sixesided package having over
lapping gussets on two opposing sides and a
cover member formed with a tang introduced into
certain of said gussets to hold the package sealed;
a structure for unfolding thev gussets at the sides
of - the I carton and separating the cover tangs
supporting structure and disposed at opposite 10 therefrom, which comprises a supporting plate
edges of the supporting plate, the upper ends of
upon which the [carton is placed, an unfolding
said unfolding ?ngers being free and acting to
?nger positioned along one edge of said plate and
slip between the contiguous side walls of the
extending vertically, a pivotal mounting for the
package and the gussets folded thereover, a pair
lower, end ofsaidy?nger at a point beneath the
of guide members, one pivotally mounted to each 15 plate whereby the ?nger may swing from a verti
of the remaining sides of the supporting struc
calv to a horizontal position, a spreading cam
ture, . positive carton engaging means carried
pivotallymounted on the free end of said spread-,
thereby for puncturing contiguous side walls
ing ?ngerand adapted to enter between the folded
of the carton to hold said walls to swing with said
gussets and the wall of the container over which
guide members, a cam shaft rotatably mounted 20 they arefolded, a lug formed as a, part of said
within said housing, means for rotating the same,
camgand engaged by the wall of the container
a pair. of actuating levers mounted within the
and ‘acting to urge the point of the cam inwardly
housing and connected with the unfolding ?ngers,
against the containerwall, means yieldably hold
unfolding ?nger cams on the cam shaft, cam
ing the lug in its innermost position, and mechan;
rollers and linkage associated therewith and con 25 ieal means'for swinging the ?nger outwardly and
downwardly upon its pivotal axis to unfold the
nected to the actuating levers to draw the same
toward each other and swing the unfolding ?ngers
gussets and disassociate them from the tang, of
outwardly, guide member cams on the cam shaft,
cam rollers and linkage associated therewith for
ll. Ina carton opening machinefor use in
actuating said guide ?ngers as the cams rotate,
unwrappingcartons ?lled with a'product, and
said unfolding ?nger cams and guide member
which carton is made from a one-piece blank
cams acting in sequence to ?rst unfoldthe guse
folded to form a six-sided package having over
sets upon opposite sides of the carton, and then
lappinggussetson two opposing sides and a cover
carton cover.
to swing the two remaining sides of the carton
member. formed with a tang introduced into cer
outwardly and downwardly away from the prod 35 tain of said gussets to hold the package sealed;
a supporting plate onto which, said carton is dis;
8. The structure of claim 7 including spreading
posed, aguiden'iember positioned along one side
?ngers mounted on the housing and adapted to
thereof and pivotally mounted to swing outwardly
swing downwardly into engagement with the
froinla normal vertical position to a horizontal
gusset portions of the carton blank to move them 40 position and downwardly along which said carton
outwardly and to separate the remaining side
moves onto said supporting plate, a, frame member
walls of the carton from the packaged product,
on the_,inner face of said guide member and
and means associated with said cam shaft for
actuating said spreading ?ngers.
pivotedsa" ‘its upper edge whereby its free edge
may swing outwardly, means urging said free edge
9. The structure of claim '7 including spreading
?ngers mounted on the housing and adapted to
swing downwardly into engagement with the gus
set portions of the carton blank to move‘ them
outwardly and to separate the remaining side
walls of the carton from the packaged product,
means associated with said cam shaftfor actuat
ing said spreading ?ngers, stop means for inter
rupting rotation of said cam shaft when the
outwardly ‘toward a contiguous wall of said car
spreading ?nger operation has been completed,
plane of the bottom wall of the carton‘.
and a release therefor to permit the camshaft to 55
continue its rotation while restoring the parts
‘of the machine to their original positions.
ton,_‘a' blade carriedbyythe free edge of said frame
member and extending upwardly parallel thereto,
thevup'p‘er end of said blade terminating in an
in-turned point adapted to penetrate the wall of
the‘ carton with which it contacts, and mechanical
means for swinging‘said guide member, the blade,
and the side walls of the carton engaged thereby
outwardly and downwardly into substantially the
No references cited.
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