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Патент USA US2412369

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Dec. 10, 1946.v
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Dec. '10, 1946.
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Dec. 10, 1946.~
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Origin鄉 Filed April 17, 1941
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E. s. TA .SCH/5R
Patented Dec. 10, 1946
N ational- Biscuit Company,"` New 鞾ork, N. Y., a
-corporation of New Jersey v =
Original application April 17, K1941, serial Nov
388,958. Divided 'and this application' May 211.
1945, Serial No."595,511
12 Claims.
(Cl. .Q3-351.1)
by the> machine may be adapted to?forming _and
locking?颿artons of many different sizes ._ and
My invention pertains to carton forming ma
The embodiment that?l >have selected for il
lustration is -designed particularly y'for forming
cartons, such vas are commonly used for pack-`
vThe above and other objects and adyantages
over prior carton `for-m ng machines l_are attained
Aby my invention,an adaptation Aof which 1_ _have
illustrated in' 縯he accompanying drawings' to
which referenceis-had? Yfor a Vfull understanding
aging crackers, cookies, and other vfood products
but the invention is -not limited thereto. Such
cartons are formed from~ carton blanks having
side and end flaps4 andinterlockingtongues and
slits. yI_n??machines"heretofore used for forming
i Fi'g. 1 is a vertical section of a carton >forming
andjfolding these cartons, all `operations' oi fold
ing the sides and flaps and inserting >the locking
. machine made?in accordance with my invention,
tongues'in the slits have been performed by cam
Fig. 2 is a front View,l partly` in elevation,
partly in section and `With parts broken away;
the view being taken >-substaritiall粂 onthefline
actuated " arms' 'a`nd"`_1evers.v This requires very
accurate adjustment, an?d'tir'ning of all the parts
and'the constant attendance of a mechanic to
maintain the adjustment. _Even with the great
est Acare;maladjustments and incorrect timing
the fynea?n'sl for opening 4the carton slitsy and invA
' serting the locking tongues, and also the4 means
for fremoving the carton>` from the' tormer, the `
section being >indicated byA theline 4-4 on'Fig,_ 2_1.l
is" a view at right `angles to Fig.v fi,A the
Fig. 5
2.5 section
being Aindicate/d by the line Vtif-"� on'xF頶�.
. `
used, 'thereby obviating the difficulties inherent
' Another `-ob~ject is tofprcvide a machine in
the 4articles -being operated upon.
lfront . sub- `
` frame-assembly or?unit.
lFig. 7 is a similar View of a rear sube-iframe
assembly or unit,
Fig. 8 is a sectionon the line `8-.�of Fig.'` 3.
35. ' Fig�. 9 shows a former _or mandrel about which
' a large size'c'artonl -may be formed.
Fig. lofshpws'a- Smau size former and new it
is. attached to
in Fig.'9.
@65eme @OSS-bar? as, that Stern
Fig. 11 is a section A,Online Il-II of rFig.?10
' showing the adapter?that is used toconnect` the
former?to the cross-bar.
? Another object is tocprovide sub-.frame _as
semblies carrying 縯he ?carton -folding and locking
means that caribe-_removed as units and quickly
replaced by other similar interchangeable units
Figo -is 'a `perspective _View of a
formed times the -operations of folding', opening
whichlall operations ofthe machine are timed by
blankis opened? to `insert the tongue.
which the movement ofthe` carton as it is being
the slit andV inserting the locking tongues, or in
Fig; 5-f-A shows how鐃he slit in Vthe _carton
Another object is 4to?do?away 'with the com
plicatedl cam- and ylever mechanisms heretofore
Fie. 4, is an enlarged Stegt靟h鄉 ,view ?awning
simplify the `_construction and operation of 'car-y
ton forming 'and filling machines and increase
l Figw�'靤 a plan View, partly int, section sub
An important Vobject of my yinvention is to
in 'their opera-tion and timing.
stantially on the line 3?@ otQFig.- 2. "
flexibility and adjustability, a complete machine
being required for each size and style of carton.
their speedand- certainty of operation.
� the View being taken' substantially as
by mel une' 2.-.2 fon' Fig. '1; "
will occur and `many Acartons will be destroyed
inthe- operation. Also, because of the intricacy
ofy the -mechanisn'i Yand close adjustments re
quired, the speed of Ythemachine and the nurn
ber of ?cartons that can' be formed 'in a stated
time interval are limited. Another 'objection to
machines Vas heretofore used is that they -lack
lFigs. 12 to 16 show 駐e steps in the formation
of a carton from a blank and liner as performed
l MyV
my invention
invention. _inrits many aspects" anddetails
` ?
to adapt ?the machinel to -form different sizes
is adapted to?ruse withA different kinds or types
of cartons.
of carton forming -r'nachinesjV In Figs. ?loto 111',
Another object is to ymake different sizes of
have shown how therinventiori may be adapted
forming headsv or blocks -interchangeable on Vthe
cross-?bar or vbars and operative with theinter 50 to a machine havinganumber of _forming`blocks
moving in an endlessl cycle, and deliveringlonly
empty' cartons; But the machine mayfutilize
changeable sub-frame assemblies.
? Another'object is to provide an improved means
hollowV formers or ?blocks and deliver?iille?df?la'r->r
for removing -thelv carton land� liner'froiynV the
former lock.
籗till another-?object is toprovide means, where
This application 1s
division of the joint-ap
'p'lieetien ef wiuiem Bazant and myself, filed
and have downwardly and inwardly inclined'su?
April 17, 1941, Ser. No. 388,958.
feces su, 5| which turn in the back endrne'ps of '
Referring to Figs. 1 and 2, vertical frames |-
the carton blank, as best _shown in Fig.~?1.
Near the lower ends of these vertical guides are`
and 2 are connected at the top by a removable>
rear top plate3 _anda removablefront top 1plate .Y
4 and support fafpair of.` vertical columns 5, 6']
a vpair of Yfixed back-closing vplates 52,.,53. which
fully turn _up the back sidef of :the carton blank
which have adjustable bearings at their upper
ends for a shaft 1. vThe shaft 1 carries a pair;v
of sprockets 8, 9 over which a pair of endless
to complete the formation of the Vcarton as the
blank is carried down by one of >the forming
chains I0, || run. Y The lower ends� of theseY `飅o
chains pass around a pair of> sprockets l2, .I3-縥 , -- VThe two back closing plates are駒ed in opera
tion but are adjustable on short stubs 54, 55 so Y
secured to a shaft I4 mounted> in; bearings "n殇r' l
the lower part of the frames |`and 2." The shaft# V[that their inclination? or slope can be adjusted?.
It willA be noted that the liner holding bars 3|,
I4 extends beyond the frame member | (Figs. 2
the guides 42, 43, the arms'44, 45, the vertical
and 3) where it is secured to 縜 gear l�'thatv
粇guide>s~_48, 49, _andthe back closing'plates 52, 53
meshes with a gear I6 secured'to?a
cam shaft `
>are all secured to .and supported by the rear top
plate 3' and this entire assembly is removable as
a unit from the machine simply by removing the
l1 mounted in bearings in the framesl and 2,
parallel to the shaft I4. The opposite endfof the l.
shaft |1 carries
a gear.Y|3 that meshes with a
four screws or bolts 56, 51, 58 and 59 (Figs. 3 .
pinion .|_Bc _secured to a gear I_8b, _both ofwhich
are 縨ounted on aV stubrshaft. The-geary |8b籿
20 and 7).
secured te the frame members | end 2 below
the front'top plate 4 isa .cross-plate 60 (Figsvl
meshes with a pinion l�'secured to a gear |9a, ,
blophjlof , which ., are
mounted on a stub shaft |911 ;
that _isf駒ed _in an adjustablearm-ZD. The arm
2_|_)_`i's_v adjustable _about a _bearing 26a that is
co-axial with theshaftof afmotor 2| havinga
pinion' 2| a for` driving _theggear |912.
vA's'b?e'st'shown in Figs. 1 and 3, the top plates 3>>
and 4_ are spaced apart so vas to provide an open
? ing� through which
_ _ thecarton forming blocks 22l
may pass, carrying _carton blank and liner down
through the opening with them@` The carton
formers or heads _2_2
and 2) which is connectedv by a pair of brackets
6| ,? 62to the top plate 4. ?The brackets extend j
rearwardly` andsupport a feed. table 63 anda
edge of the feed
is recessed
64, 65. to
receive a folding plate, 66 to the opposite endsV
of which are pivoted the wings 61, 68. The plate
6_6 is fixed to a, rock shaft 69 which is supported in
bearings adjacent the front edge of the top plate `
_aresecured tol cross-'bars
_23 .
` which'蛓 are'._ secured
near their Opposite ends 4to
tne頴iieins mill. } The cross-bars
extend a shortA
distance beyond the chainsjwhere their ends are
widened toprovide cross-heads 24, 25which slide
in'the'vertical' guides 26?21that are secured to
4.` At one end_the shaft 63 has a short crank 16
(Fig. 3) which is connected to the upper end of>
a pusher Yrod 1|,_ the lower end of which is slotted
to straddle the shaft l1 and has a roller engaging
in a'groove in a cam12 fixed to the shaft |1.>
The lower side of the folding' plate 66 has av Y
pair.. of lugs 13, 14 in which levers 15, 16 are piv-M '
> ? A
_ The'rear top plate 3 has a pair of bearings 281, 40 otally supported. The outer ends of these levers
are connected by short links tothe underside of�
29,' _inwhicha rock shaft 38 is mounted. _This
the wingsr 61, 68. Theinner `endsfof the levers. ~
`ro蚦lf�"shaft has liner holding bars 3| secured toit
75, rent loosely in eneend of levery n which is
andone .of these bars vhas a short extension or
tothe top plate 4 and at its opposite ,end
a?rmfto which one end _of a link 32 isY connected.
to a spring 18 the lower end _of which
The' upper ehdfof this link _isconnected to one
is connected in any suitable manner to the cross-'_ _
a'rm 'of' a bell-crank 33 mounted'on a'shaft 34
the-frame members >land 2.
supported in bearings on _the vertical columns 5,
The `other`e`nd of the bell-crank carries a
Y,roller 34?V which is adapted to be actuated by a
earn 32'籝 carried by the shaftfl. 4_,緼sslflown in Fig,�
:Across-frame member
shaft 1. 36 _is supported
~_ the
coluin'rl's'�V4 6 ?andy carries a pair of pivotally
have short arms vadjustably connected Vto a pair
is inclined
top'plate'� and adjacent their lower ends to the
cross-plate'遧). Near the tops of these vertical
guides are secured vertical front flap guides 8|,
82`ea`ch of which hasa- slit near the top through
which, the no'seforpoint of a springr pressedl
Secured to the �
vertical guides 1S, 8,0縤s ashort fixed shaft 585 to
60 As best shown in Figs. 2, 4 and 5,'fthe guide 88 '
between the two top plates'遖nd 4 _and adjacent
each lsideof the inclined portion is a carton blank
guide 42, 43 (Fig. 3).
" fingers, Veach of the front guides carries a tongue
_guide 38, _89 and a 籺ongue presser roller 80, 9|. .
?downwardly at.4|jtoward
the opening ,
which are'. fixed a pair of tongue飃uide fingers
86,81 (Figs. 2 and 4). Beneath the tongue guide
nected to the outer end of the horizontal arm?tof
�Theinner or forward edge ofthe top plate 3
breaker finger` 83, 84y projects.
of link_s.� Mirthe upper endsof which are con粂
the bellcrank _33. _
and 2) are connectedat their upper ends to the
thecam 35 may be a split cam _which is readily
mounted fold straightening _lingers 31, 38 which
A pairof vertical front guides �, Sil (Figs. l
j � - 額
u A forwardly kand inwardly extending arm 44,.
45,1isl secured to the rear top plate 3 adjacent
each?bf'飔he guides- 42, 43 (Figs. Sand 1_) which`
armsfproject into the opening between the two
top'_'platesfand at their opposed edges may be
and roller`9� are carried by an arm 90' pivoted
to the- guide V1|! and are urged inwardly by the
spring 98"'. Similarly, theguide 89 and ,roller
9| Vare carried by the pivoted arm 9|' which is
yieldably ypulled inward by the spring 9|". ' I_t
. will be noted that the breaker llingers, the tongue _,
guide `fingers, the tongue guides, and the tongue
presser rollers are substantially in alignment and
theyare adjacent the path which will be travelled
rounded or carry rollers 46, 41which will be close 70 by the slits cut in the carton
blanks.y as the carton.
to?theedges' of the formers 22 as they. pass be
tween 'thefplate's and will fold -upthe bottom end
flaps Vof the carton blan .
HA, pair of downwardlyextendingguides 48, �
are securedito the underside of the rear top 'plate 75
blanks arecarried down bythe former-heads.. _
?The'front top plate 4?the cross-plate 60, the
brackets 6|, 62, the feed table 63, the-front fold
ing plate- 66,- the wings61; 68, 縯heshaft 68,'Y the '
levers 13, 16, 11,`the spring 18, the Vertical guides
1.9, 80, the flap; guides 8|, 82', the breaker fingersy
83., 84, the tongue guide fingers 36, 31., the tongue
guides .88, 89 ~and the? presser rollers 90, 9|. are
all secured together as a unit and' can be re
moved frein the machine asa unit simply by dis
connecting the pusher rod' 1|, the lever |03 land
removingv the three bolts 92, 93, 9.4 in the top
plate andthe two bolts. 05., 90m the cross-plate.
This unit may be. provided with eye-bolts for ease
in handling, as. shown in Fig.. 6.
due to their飋wn weight. In vorderltolassure-re'->
moval of the'cartons from 'the' formers I have
provided. the striker arms which are.> bestA show-n
in Figs. 1, 4 and 5. f `Astriker head |~|'2-',V which
may be made?in two parts so as to be adjustable',>
is' secured to the shaft |4. and carries. a pairv of '
pivoted varms ||3., ||.4. which are.> restrained-v
againstV movementreverse to' the direction' of'` roi
An arm ||1 carrying a stop ||8 is adjustable on
9.1 (Fig. 1) which
the stub 55 that carries the back closing p1'ate'�'.
is. secured toa pair of racks 98, meshing with a
pair of pinions 99 which? in turn mesh with a pair
of? racks |00.r formed incr secured to theY support'
ingbrackets 6|, 62. The pinions 99 are keyed to a
shaft |'0| to which a link |.02i is pivotally connect
ed, theother end of the� link being pivoted to a
rocking lever |03,~the lower end> ofwhich is loosely
inpFig. 4. The position of the striker head'on`
. Thefeed table. has a carriage
mounted on a rock shaft; |04. A shortv arm |05 is
and at >its outer end the arm has a short� lever
||~9.carrying a roller |20 loosely pivoted. on it..
This short.v arm is adapted to swing forward until~
it strikes the stop pin ||8 as shown in dotted lines
the shaft I4 is adjusted so that one of the arms;
H3;` or ||||A will contact the roller |20. and swing
the arm against the stop | I8 at the time a former
haspassed the lower ends of theguides 48,f49;and
keyed to the shaft |04 adjacent the lever |03 and 20 19'y ~80 when the-carton surrounding the` former
atits'free end hasa slot |06 through which passes
will be in the position shownin dotted lines inv
a bolt` |01 which screws into the lever |03. By
means of this slotted arm the limits of the stroke
ofthe feed carriage can be adjusted.
,The shaft |04 is mounted in bearings on the
frame membersy | and 2 and at one end has an
arm |03 keyed to it, the free end of the arm
being pivotally connected to the lower end` of a
pusher rod |09 which at its upper end has a slot
straddling the shaft |1 (Fig. 1) and a follower -
which runs inthe. groove of a cam ||0 keyed to
the shaft |1.. The constructionv of the feed car
riage 01 and of the racks and pinions by which
movement of the lever |03 is transmitted to the
feed carriage is not shown in all of its details -
Fig. 4.
When the arm (as say,l ||3`) strikesthey
roller |20, itv will be stopped butr the shaft.4 |.4.wi11
y continue to rotate thus relatively turning the arm
||v3 backward about its pivotal support and put.
ting tension on the spring ||`5. As; the'y shaft.
continues to rotate, a point is reached, asshownx
by dotted lines in Fig. 4, when the striker |;|?3.
will snap-past the roller |20? andstrikeA the up'
standing edge of the closingY flap 3|6 ofthe carton-and push it from the former., The. carton. will
then drop to the'conveyor belt |-2 |A and ber-carried'V
upto the packaging machine or wherever it isto
be used;
The machine shown in Figs. 1 to 11 is designed.`
because it is of usual- construction and? per se
to make cartons of many dii飁rent sizes. Here--.
does not form any part of theY present inven
tofore, when changing a machine- of this gen
tion. The operation and construction of these
eral type to make a diiferent size carton, it Wasi
parts are well-known to those skilled in this art.
necessary to substantially rebuild the machine;
Returning now to Fig.l 1 there are six` carton ILO because the blank feeding mechanism and all the.
forming heads 22 shown on the chains butA any
guides and stops on the front and rear plates had.,
suitable number may be used. These formers are
tobe changed and the opening between the .tworectangular in outline and the bottom of each
plates either narrowed o'r widened to s'uitthe
former as it descends on the- left hand side of
different size carton. It wasl also necessary to
the chain (Fig. 1) is of substantially the same 45 change the timing of` alli the cams and'v operating
size as the bottom of the carton ?that is to be
levers throughout the machine. It was also nec
formed. Each. of these> formers` or heads ?has a
recessl |?| | on- each sidegwhich, as it carries:v the
essary tol change the . relative position of the
cartonjblank downward, will?have its lowerin
clined' edge come substantially in alignmentwit-h
the slit that isformed in� thel front flaps ofthe
of different heights fory different' cartons. It was
a matter of several days? Work to- change. a ma
chine over from one size to another and required.y
cartonblank. These recess'es'l | |> andr the slit >in
the carton blank come in alignment: with the
breaker fingersj83f, 8,4, the function; of whic'hzis to
press i-_n on- the> carton materialy adjacent the slits
and break anyl iibers 'that Imay> be' adheringf?or`
which were not> cut completelyl through 'when
the carton blank wasl cut out.> As the former then
passes down carrying the carton with it, the guide
chains. I0, || because the forming blocks 22'were.
the services of highlyskilled mechanics'.`
By means of the present invention, themachine
can. be changed over from one size toy another
in avery short time, usually not more than 1/2
hour by two mechanics.- This is a great advan-'
tage over previous machinesv which were so* diftl'
cultv to adjust `for use of 4different size cartonsthat it was theusual practice to have a complete>
fingers 86, 81 engage> thel locking tongues on the 60
machine for each size carton.?
rear carton iiaps and turn them inV -so that theyy
kWith'the present invention, it l"is not necessary*
will` engage behind the guides 88�, 89 Vand'` then'V as
tochange the timing of anyv of the mechanism
the former continues on down the rollers 90; 91|l
when changing from one size carton to` another.
will press the material of the carton adjacent the
All that is done is to remove `the front and.` rearA
top edge 'of the slit into the recesses |'| | so that
interchangeable units, las illustratedl in'Figs. 6
the slit' is opened, and the locking: tongue can be
andl 'Land replace each one' with a corresponding
forced through the> slit tor complete the forma
unit adapted for the -new size of cartf0n'."'The
tion ot the;carton�, (Figs. 5, 5'--A).
formers'22 are also changed but these are' adapted
When the carton reaches the lower end of the`
guides.A 19?, 80, it is completely formed' around?the 70 to be connected to the cross-bars 23 so� that'thelower edge of each former, as it comes down in
forming block. 'I'he tucking ii'ap 3f||靬 extends
contact with the carton blank, is the same dis-?
up from? the rear wall: of -the carton: as shown in
tance `below'its cross-bar 23 irrespective of the
Figs. 1` andv 16r as is usualr in'. this 籺ype of carton�.
size of the' carton or former. Thel means" ?for
Since these? cartons' areI not filled 'they are very
interchangeably connecting the differenti for-mers@v
lighty andi will not drop; always> from ' the formers` 75
2,412,36e- '
to the ,cross-bars is illustrated in Figs. 9 to .11;Fig.,_9?illustrat,es the` former-substantially as
wall 313 of the carton. At the same time, through
the pull of the spring 18, the' end flaps 61, 6.8.are
1._ _Each cross-bar23A has a [pair
turned in `folding in ?chefsides of the liner ?and
ofylo?cating lugs or stops- 23', which. are ,spaced
apart a distance equal tothe largest'sizerof former Ul the front end flaps `311, 318 as shown in Fig. 13.
As the former continues to press the carton blankv
that'will be vused on the machine. >This isas
and liner down the next operation is ?for the roll-Ashown in Fig. 9. Each former hasa slot in its
46, 41 to fold up the bottom end 馻ps 3| 1,312.1l
upper end in which the cross=bar 23 駎s?so that
together with the?overlying fold of the liner as
~the lugs 23? abut ?the two sides?of the- former.
shown in Fig. 14. YIn this position the fold
Pins orbolts 22a then secure the formers toi the
10, straightening 駈gers 31, 38have straightened;
cross-bar; In '.Fig. V10 we have illustrated the
out'the rear folds 23| in the liner and the遚arton
smallest size of former which may be used on
is- substantially in the position shown inFig. 14..l
the machine; In this case an. adapter 22h is
The fingers 31, 38 are now swung up and as the;
secured to the former 22?. and at its upper end
to descend,`the'back panel 3114i I
thisY adapter has a vslot to receive the cross-bar 15
of the carton and top 315 are folded up' by the ?
23 andis of the same length as the former 22 so
downwardly and inwardly inclined> front edge Y41
that the adapter will 駎 snugly between thelock
of the飏e'ar plate 3. . The inclined faces 50, 51 of -
inglugs 23?. The adapter is then secured to the
the vertical guides 48, 49' engage the flaps '321,
cross-bar 23 by the same pins or bolts 22a that
are ?used for securing the other sizes` ofV formers. 20 322, 321 and 328'and gradually'fold'them in-'
wardly. During this time the slits 319,320 have
~ The adapter 22h is of such length that .when the
the breaker fingers 83,84 which?
former 22' is secured to the cross-bar the dis
break> open the slits provided they have not been
tance from the cross-bar to the bottom of the
cut fully open when the carton blanks were formed.
former would be exactly the same as'the distance
the carton> descends further the locking
from the cross-bar to the bottom of the former 25
tongues 323, 324 will engage in the grooves in the 22; This relation is the same for allr sizes of
lingers 86, 81^which are� inclined inwardly
formers intermediate the largest and smallest ' Vguide
toward the former and as the tongues slide along
sizes illustrated. BY keeping this distance con;
them they are turned in toward theV slits and also`>
stant from the cross-bars to the bottom of the
formers, iti is not necessary to change the timing 30 are positioned the correct distance from the slitsso that when the rear side of the carton is-folded
of the4 chains 10, 1 I when changing from one size
its 駈al position by the plates 52, 53, the
carton. to another.. All that is necessary then
tongues will be in exact alignment and ready to
in changing therformers is to remove the pins
enter the slits 313, 320 when the latter-are opened
or bolts 22a which releases the formers then on
`pressure of the rollers 93, 91 on both the
the machine and to replace them with a different 35
tongues and the carton above the slits. (See Fig.v
size, securing the' new formers in exactly the
5-A.) These rollers not only open the slits but"
same'relative position to the chains by means of
press the locking tongues?駌mly against the
the pins 22a. When the formers are thus assem-v
of the ilaps 311, 318 directly above the slits
bled on the machine and the properv size remov
so that as the tongues are pressed forward by the
able front and rear units are >in place the machine
is ready for operation with the new sizecarton
and it is not necessary to change the timing of
any of the >parts except in some cases it may bey
ASV-the former 22 carries the cartondownbelow
the rollers 90, 91 one ?of the strikersr113, 114
strikes the flap 31B and pushes the carton olf,
advisable to make a slight adjustment of the
striker arms 113, 114.?-
back closing plates 52, 53, the tongues must enter
in the slits and lock the carton in formed position."
" y if4 it does not drop off of. its own weight; to theI
The'method of folding the` carton blank andi
belt-,121 (Fig. 1).�
liner is shown in Figs. 12 to 16. `A carton blank
v229;and liner 230 are fed into the machine as
Asf clearly shown in Fig. 2, the arms carrying
the rollers >911,111 are urged inwardly by` coil`
shown in Fig. 12 spanning the lgap betweenfthe
springs or other suitable means.
front plate 4 and the rear plateS. The carton
While I have
shown `rollers for opening the carton slits, rounded
blank is marked with score lines ysoas to provide
apanel`310 which will form the bottom of the 1
surfaces or cams on the arms operate satisfactorily*
but there is less friction and wear when rollers
carton and which' lies directly over the-opening ?
inthe top frame and beneath Vthe former 22.
Other score lines on the blank provide bottom 55 .'I?hefoldstraighteningf靚gers 31,. 38 shown in
Fig. 2 generally are notnecessary when the car
end flaps 311, 312, a front panel or side 313, a
tons are small,l as say'lessthan one pound capac
back side or panel 314, a cover 315 and a tuck
ity, but when larger cartons are used, 'they assist� Y
316. At the two ends of the front panel 313 are
materially in keepingrthe liner folds straightlan'd"
front flaps 311, 318 each of which is provided
contribute to higher speed of operation. `.Whenr '
the machine is usedfor. forming cartons without
314 is provided with opposite end flaps 321, 322 ?
liners, lthe liner頷ol'ding'bars 31 and the fol-d
, each of which has a locking tongue 323, 324
lingers 31, 38, Itogether with their'
which, when the carton is formed enter the re
with a slit 319, 320. 'I?herback wall of the carton
spective slits 319, 3213. Cuts 325, 326 separate top
` closing 馻ps 321, 328 from the cover 315 and these
top flaps are connected along score lines to the
1 end or locking flaps 321, 322. This carton blank
is of usual form.
When the carton blank and liner have been
inserted in the machine the former 22 descends.
The 駌st operation as the bottom of the former
operating mechanisms, are omitted. `
Asfshown in Figs. 3, 7 and 8," therrear remov
able unit used With the machinewof Fig. 1 may be Y
positioned on the frame by dOWels 355, 356.2V
I have greatly simpli馿d?the construction'and ?
operation of carton *forming �'machines' particu-�
larly `machines adapted- Ito form cartonsk from Y
blanks> having interlocking Itonguesand slits;
type',` theVinback
i to >rock the shaft 69 which raises the front plate
the slit, opening lingers. (corresponding> topresseri
l 66 folding up the frontof the liner andthe frontv 75 `rtillersflllt;91) _were all operated遙y levers-which;
. starts to force the carton blank down between
the front and rear top plates is for the cam 12
in turn were actuated by cams. This required
very accurate manufacture of all the operating
parts and necessitated their being kept inexact
adjustment, otherwi-se the machine would mal
function. This has always been -very dif?dcultto
doY and it has limited the speed at which such
machines could be operated,
` By means of the present invention all' of these
moving 玴arts l(cams, levers, shafts, fingers) are
done away with?and theseveral functions of -fold
i-ng up the back ofthe carton, opening the slits,
inserting the tongues-and so forth are performed
automatically by stationary parts as the carton
being formed is carried pastthese >several parts.
In other words, timing of ther-mechanism is done
away with and -the carton be頽g- operated upon is
its own timing means, so that all functions must
be performed at the proper time and in the proper
sequence.` This greatly simplifies the operation
of the machine and enables it to be operated at
speeds heretofore unattainable because no matter
how fast the carton blanks are carried down by
the formers, the sequence of operations necessary
to fold the blanks into cartons -and lock them
together are timed and performed automatically
by the descent of the carton.
vHaving thus described my invention and illus
trated how it may be used in carton forming ma
chines, VI claim yall adaptations and equivalents
-thereof that may come within the spirit or within ?
the scope of any of the following claims.
ft'o'lthe front 馻p guides, fixed guide fingers secured
籥djacent the outer edges of the front guides below
the, front flap guides, yieldable tongue -pressers
secured to the front guides below the guide
fingers, a rock shaft supported on -the'top ' plate
adjacent its front edge and above the -front guides,
a folding plate secured to said shaft and `normally
lying withina recess in .the top of said >top plate,
a feed table secured -to said top plate, and a pair
of brackets having vertical legsconnecting vthe
top plate and cross-plate and horizontal legs sup
porting said feed table, all of ,said parts compris
ing a removable unitary structure, ,thetoppl?ate
and cross-plate having means for securing the
unit assembly to the frame'of ythe machine. _
4. In a-?machineof the class described having -a
supporting frame, a removable unit Vassembly
comprising a rear top plate, liner guide fingers
and stops secured to the top_of said plate,bottom
`flap folders secured to the top _plate and vextend
ing forwardly and inwardly therefrom, a'pair -,of
downwardly Aand 4oppositely disposed vguides fixed
at their upper ends to the top vplate?and-sup
ported wholly thereby, downwardly 籥nd forwardly
inclined kback .closing plates disposed between '_th'e
guides and secured one to each guide adjacentits
lower end and supported wholly'thereby, the rear
ltcp plate having means for securing the` unit
assembly to the frame of the rr-iachine.>
` '
5. In a machine vof the classdescribed, a >re
movable unit assembly comprising a rear top
plate, 'liner guide fingers and stopssecured to the
top of said plate, bottom fiap rfolders Vsecured to
l. In a machine of the class described having a
the topy plate and extending forwardly and in
supporting frame, a removable uni-t assembly
:wardly therefrom, a pair of 籨ownwardly and >op
Comprising 'a top plate, a cross-plate below the :1.,
positely disposedguides fixed at their >upper Vends
Atop plate, parallel front guides connecting the top
Ato the top plate, fixed. downwardly and forwardly .
plate and cross-plate, fixed front flap guides per
inclined back closing >plates disposed between the
pendicular to the >front?gu-ides and secured adj a
and secured one to each guide adjacent
cent thereto,yieldable breaker fingers fixed to the
Aits 頻ower -end and supported wholly thereby,I and
front fiap guides ~and engageable by carton flaps
vWhat I claim is:
- �
moving along the'guides, fixed guide fingers se
cured adjacent theouter edges of the front guides
?below the front 馻p guides, and yieldable tongue
pressers fixed to the front guides below the guide
fingers, the breaker fingers, guide 駈gers and 1
-ftongue pressers being substantially in vertical
alignment successively, the top plate and cross
Aplate having means for securing the unit assem
'bly to the frameiof the machine.
2. In a machine of the class described-having
'a -supporting frame, ~a removable unit assembly
comprising atop plate, a cross-plate below the
top plate, parallel front guides connecting the
top plate and `cross-plate, fixed front fiap guides
perpendicular to the front guides and secured ad- '
means for adjusting the inclination?of vthe'bac'k
- vclosing plates.
6. In a machine for forming a carton 'from' 籥
blank `having flaps with ?i slits and flaps with
tongues adapted to be Iinserted Ain `the slits, the
combination` of av table having> an Aopening there
in and adapted to receive a` carton blank, Ia carton
former� adapted to force the blank downward
through said opening, means for folding the sides
and fiaps on the `-blank as the former descends,
and stationary means inthe path of the descend-`-
ing blank becoming automatically operative by
the >descent of the blank to open the lslits and
insert the tongues therein.
7. In a machine for forming cartons from
blanks having flaps with slits therein and flaps
jacent thereto, fixed guide fingers secured ad
with locking tongues thereon, the combination of
jacent the outer edges of the front guides below
a frame having a horizontal table with an open
the front flap guides, yieldable tongue pressers
ing therethrough, means for positioning a carton
fixed to the front guides below the guide fingers,
blank on the table over the opening, a carton
a rock shaft supported on the top plate adjacent 60 forming head, means for moving the forming
its front edge and above the front guides, a
head downward through the opening to carry
folding plate secured to vsaid shaft and normally
the carton blank with it, vertical guides extend
lying within a recess in the top of said top plate,
ing downward from the table adjacent-the front
and a feed table secured to said top plate, all of
edge of the opening, means for folding up the
said parts comprising a removable unitary struc
馻ps having slits as the forming head forces
ture, the top plate and cross-plate having means
the blank through the opening, the forming head
for securing the unit assembly to the frame of
having recesses over which the slits are folded,
the machine.
breaker fingers secured to the vertical guides in
3. In a machine of the class described having a
supporting frame, a removable unit assembly 70 the path of the downwardly moving slits and
adapted to press into the recesses, fixed means
comprising a top plate, a cross-plate below the
the path of the descending carton blank adapt
top plate, parallel front guides connecting the
ed to fold the flaps having tongues so that the
top plate and cross-plate, fixed front 馻p guides
forward edges of the tongues lie adjacent the
perpendicular to the front guides .and secured
adjacent thereto, yieldable breaker fingers fixed
Slits, fixed tongue pressers secured to said guides
-below?the breakersV and ini the Vpath ofi-縮aid
-ing, vertical _guides depending from 縯heA table; ad�
tongues, lslits and recesses, whereby the pressers
will open therslits and press the entrant edge, of
vjacent the front and >rear sides of 縯he opening,
means adjacent theV rear guides `>for 籪olding'the
the tongues into the-plane of the slitf openings,
land?means for pressing vthe tongues into the slits.
33.'- In a ?machine for forming cartons from
blanks having flaps with slits therein and flaps
`witl?rlocking tongues thereon, the combination of
Va frame having a horizontal-table with an open
tongues Vforward toward the f slits, stationary
pressers adjacent the frontguides >for opening
the slits and pressing the tongues into-the plane
of the opened slits, and stationary meansfad-ja
cent the rear guides for-pressing- thetongues for
ward and into the opened slits, said stationary
-ing -therethrougmmeans for positioning a carton
pressers andsaid stationary vmeans operating to
.blank- on the table over the opening, a carton
perform their functions as theAcarton-?blanlfzv~ is '
forming head, means for moving the forming
moved downward past them. `
>head downward through the opening to carry
`>the carton blank with it, vertical guides extend
ing downward� from-the table 'adjacent the front
edge'of the opening, means forfolding up the
vflaps having- slits as the forming head forces the
.'blankthrough the'opening, the forming head hav
ing recesses 'over which the slits are folded, iixed
means in the path ofthe descending cartonblank 20
adapted to fold the flaps having tongues so that
the forward edges of the tongues lie adjacent the
slits, vfixed tongue pressers secured to said guides
'below' the breakers and in theV path> of籚 said
tongues, slits and recesses, whereby the pressers
andV fixed means onthe rear guides for pressing
the vtongues forward and into the opened slits.
Y10.'1In 'a machine for forming cartons from
blanks Vhaving flaps with slits therein and flaps
with tongues adapted to interlock in the slits, the
top plate and supported wholly thereby, V>dQwn.- l
ofthe bottom of the carton to be formed, means
fixed pressers for opening the> slits and pressing
therefrom, a pair of downwardly and oppositely
disposed guides fixed at their upper ends to the
blank having bottom; front, rearand en_d panels
formed thereon and end 馻pswith slits therein
l.for positioning a carton -blank on the table with ?
its bottom Vpanel over the opening, means for
the tonguesinto the plane Vof the opened slits,
plate and extendingY forwardly andfinwardly l
1_2. In a machine for forming a carton froma
_opening therethrough of approximately the size
_guides >having means for?folding the tongues for- '
frame, a removable unit> assembly Vcomprisinga
rear top plate', spaced carton blankjguideson said
top plate, bottom riiap folders secured ,toA ,theftop
whollythereby, Vthe rear top plate having means v
' th'e縞ombination of a horizontal table having an
V.ward adjacent the slits, the front guides having
for securingvthe unit assembly to the frameof
and means for pressing the tongues into the slits.
9. In a machine for formingVK cartons from
l >the front and rear sides of the opening, the rear
disposed between the` guides and secured one; to
each guide adjacent its lower end and supported
the tongues into the plane vof the Vslit openings,
vforcing the blank downward through the opening,
vertical guides depending?from the table adjacent
4wardly and forwardly-inclinedback closing plates
willODen theslits and press the entrant edge of '
blanks having馻ps with slits therein and iiaps
with*v tongues adapted toV interlock in the?slits,
111. In a carton forming: machine 縣aving`-v a
and end flaps with tongues adapted to interlock
in the slits; the combination of> a frame, front
and rear top plates secured to> said 縡rame Yand
spaced apart a distance substantially equal'to'the
lwidth of the bottom� panel of the carton blank,
means for positioning a cartonblank on said
plates with its bottom 籶anel over the space fbe- ` Y
tween them, a carton forming head, means for
moving the forming head downward between said
plates to carry the cartonblank with it; means
fixed to and -supported'by the `frontvtop plate
(for .successively- turning upthe front panel and
the slitted- endsilaps, andopening the slitsas
'the forming head carries the blank downward;
means 駒ed to and supported by the rear top plate
' for successivelyturning up the end panels, then>
jturning up-the rear Apanel :and endiiaps with
.tongues andv pressing the tongues fully into the
vslits as the forming head .carries theblankjdown.- .
combination of a horizontal table having an open
ward; said front and rearr top'platesV with their
ing 縯herethrough of approximately the size of 50 respective
supported means being Aremovably lse
-the bottom'of the carton to be formed, means
frame and being removableY there
for :positioning a carton blank on the table with
vfrom as distinct front and rear units. Y f� ? �
i ~
its bottom panel over'theopening, means for
forcing the blank downward through the open
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