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Патент USA US2110478

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March 8,1938.
2,110,478 '
Filed Nov. 16, 1936
4 Sheets-Sheet 1
March 8, 1938.
D. wooD
Filed NOV. 16, 1936
4 Sheets-Sheet 2
March 8,1938. '
' Filed Nov. 16, 1956
4 Sheets-Sheet 3
March 8, 1938.
Filed Nov. 16, 1936
4 Sheets-Sheet 4
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Patented Mar. 8, 1938
PATENT orril'ii
Dennis Wood, Stanmore, England
Application November 16, 1936, Serial No. 111,115
In Great Britain November. 18, 1935
4 Claims. (CI. 93—79)
This invention relates to machines for making
cartons of frusto-conical shape, from paper, card
board or the like, subsequently impregnated with
ing the carton body around the mandrel.
Wax or other proo?ng material to render the
' Fig. 9 is a plan View of the folding mechanism.
5 cartons liquid-tight.
The invention has for its object to provide an
improved machine for making the frusto-conical
bodies of the cartons in a continuous sequence of
operations, starting from a web of paper or the
10 like, which, after printing, if desired, is cut to
form the blanks, the edges of which are‘ secured
together by adhesive after rolling the blank
Figs. 7 and 8 are two elevations at right angles
to one another, showing the mechanism for fold- .
Referring to Figs. 1 and 2, the web III of paper
or the like, drawn from a roll I I provided, with a
brake I2, is passed over a tensioning roller I3 7
mounted on spring controlled levers I4, and over
a guide roller I 5, to a printing mechanism I6,
from which it passes over another tensioning 10
roller I‘! to a pair of feed rollers 58 in advance of
15 or the like is fed to a series of cutting rollers, of
which one pair make spaced incisions towards
the cutting rollers I9, 20. All these rollers are
driven by suitable gearing 2!, 22 from a vertical
shaft 23, itself driven through bevel gearing 24
from a main shaft 25, which also drives the print
ing mechanism I 6 through suitable gearing 26.
the two edges of the web, these incisions prefer
ably diverging at equal angles to the line of travel,
As shown in Fig. 3, the ?rst cutting roller 19,
having helical cutting blades 21,.makes spaced
around a conical mandrel or former.
According to this invention, the web of paper
for producing the side edges of the blank from
incisions 28 towards the two edges of the web,
2 p which the carton is to be made, and a second
these incisions diverging at equal angles to the
line'of travel; for this purpose, the roller, I9 has
circumferential‘ recesses 29 adjacent to its ends,
pair make curved cuts transversely of the blank
for producing the convex bottom edge and con
cave top edge of the blank, some or all of the
transverse cuts being made preferably across the
25 entire width of the web so as to divide up the
waste material.
‘Adhesive is applied to one of the side edges of
the blank at a point between the two pairs of
cutting rollers, that is, while the blank is still
in which recesses the helical cutting blades 27 are
provided, the blades projecting beyond the cir
cumierence of the roller by ‘the thickness of the
paper web, so that the blades produce the inci
sions 28 near the edges of the web, while the
latter‘ is gripped (see Fig. 4) between the cylin
drical surfaces of this roller I9 and the lower 1
30 connected to the web at front and rear; when
the web is cut transversely, the blank or leading
roller I9a, which is plain. The second pair of
cutting rollers 20, 20a, having curved blades 30
edge passes on to one or more supporting guide
on the upper roller 20, out the web transversely
as at 3| for producing the curved edges of the
rollers before the next transverse cut is made,
and the blank thus severed is carried forward
35 by these rollers on to a table or platform beneath
a mandrel of frusto-conical shape, around which
it is folded, a plurality of these mandrels being
mounted upon a rotary standard or carrier, dur
ing the intermittent rotation of which the forma
40 tion of the carton body proceeds until it comes
to a position for ejection.
The invention is hereafter described with ref
erence to the accompanying drawings, in
Fig. l is a side elevation of the carton-forming
Fig. 2 is a plan view.
Fig. 3 is a plan of the cutting rollers on a larger
Fig. 4 is a part sectional elevation of the cut
ting rollers.
Fig. 5 is a partial side elevation, seen in the
opposite direction to Fig. 1, showing the mecha
nism for driving the gumming device.
Fig. 6 is an end View of Fig. 5.
blank at, while the web is gripped (see Fig. 4) be
‘tween the cylindrical surfaces of this roller 20 .
and the plain lower roller 20a; at the same time
these cutting rollers 20, 20a sever the edges of
the web I0 so as to divide up the waste material, I
for, which purpose, the upper cutting roller 20
has its blades 30 (or alternate blades) extending
across to slightly beyond the width of the web,
the developed shape of these blades 30 conform
ing to one of the curved edges of the required
blank 1'. The blades may be shaped to cut the
longer curved edges, i. e. the edges which repre
sent the larger ends of the frusto-conical carton
bodies, in which case both edges of the blanks
will have-the same curvature and the resulting
carton bodies will be of greater height on one
side than on the opposite side; to avoid this, the
roller 20 is provided with auxiliary cutting blades
32 of shorter length and sharper curvature than
the blades 30, so that both the top edge and the
bottom edge of the blank are cut to proper shape
by removal of the narrow concave-convex slip,
indicated at 33 in Fig. 3, and. the resulting car
ton bodies will be of even height.
Between the two pairs of cutting rollers, ad
hesive is'applied to the web along one side of an
incision 28 made by the ?rst pair of cutting roll
ers l9, l8a, so that the blank :2: is gummed whilst
still connected to the web at front and rear; as
. shown in Figs. 2, 3 and 4, a tank 34 containing
gum or otheradhesive is mounted at the side
10 of the machine, near to the second pair of cut
so that the Waste material from the outer edges
of the web can drop down and escape past the
thinner end-portions 6f, 62 of the guide rollers.
into a chute 63, this waste material having been
cut into short lengths by the transverse cut 3|
taken across the whole width of_the web. The
blank .7: is however carried forward substantially
in a horizontal direction over the rollers 59, 60,
which pass it over a grid 84 on to a hinged plat
form 65, while the waste material slips under 10
ting rollers 20, 20a. Within this tank a roller . this grid into the chute; the blank is then moved
35._is revolved,‘ for example intermittently by forward by an oscillating ?nger 66 which brings
means of a ratchet mechanism 36; blades or it into position beneath a mandrel 51, where it
‘scrapers may be arranged at opposite'sides of.
the roller, one in order to regulate the thickness
of adhesive taken up by the roller'35, and the
other in order to scrape the roller entirely cleanv
so that a supply of fresh adhesive will always
be available on the top of the roller.
The ad
20 hesive is transferred to the blank by means of
an oscillating arm, 31, operated by a cam device
is located by a pair of rocking guides 68 carried
by the platform, these guides closing together
so as to center the blank in relation to the
mandrel 61. This mandrel is one of a plurality
mounted radially upon a standard or carrier 89
rotatable on a vertical axis, and driven inter
mittently with a step by step motion through a
Maltese-cross mechanism 10, 1| and reducing
38, the arm being ?tted at'its extremity witha
gear 12.
metal .stripor‘pad 39 shaped to cover the area
to be gummed on theblank; the under surface
A portion of the platform 65, adjacent to the
position at which the blank is located, is cut
away to provide an opening 13 through which
25 "of the gumming strip or pad may be plainor
may be ribbed or chequered to assist the reten . a folding mechanism operates for rolling the
tion of the adhesive taken from the roller 35.
The fulcrum end of the arm 31 is forked to en
gage a horizontal pivot 4| upon a vertical sleeve’
blank upwards around the mandrel 61;‘ .The
folding mechanism, which is shown more clearly
in Figs. '1 to 9, comprises a plate 14 normally
42 which is turned periodically by thecam 38, ' lying flush with the platform 65 but pivoted 30
‘ of the arm from above the top of the gumming
thereto at 14’, which lifts the ‘blank at its center
line and presses it against the underside of the
mandrel 61, the plate rocking on its pivot to en
roller 35 (as in Fig. 2) to a position'above the
area to be coated with adhesive (as in Fig. 3),
which then rise and fold the blank up the two
and‘vice versa.,. The arm 31 isrraised clear ‘dur
ing the forward and return movementsrby a
sides of the mandrel into U-shape, as indicated
in dotted lines in Fig. 8, and a second pair of
arms 16 arranged outside the ?rst pair, these
acting through a lever 43, link 44 and crank 45;
the movement carries the pad 39 at the end
horizontal rail or cam 46 engaging a roller 41
underneath the arm 31, this rail being ?xed to a
sleeve“ slidable vertically on the post 49 ‘which
supports‘ the other sleeve 42; ‘a link 50 operated
sure even pressure, a pair of spaced arms 15
second’ arms rising at the same time as the ?rst
pair 15 but proceeding higher and then coming
together so as to complete'the folding of the
blank around the mandrel. . The folding mecha
nism is operated by cams and levers working in
by a cam 5|, through a bell crank 52, lifts the
sleeve 48 and rail 46 during the swinging move
ments of the arm 31, but allows the arm to combination, the second pair ,of arms 16 being
descend into contact'with the roller 31 and the .preferably arranged ‘to operate one slightly vin 45
advance of the other so as to ensure a smooth
web III at the ‘respective ends of its movement.
If the web in, which the blank has been partly overlapping of the two edges of the blank, with
cut out is travelling continuously forward, the the coated edge over the other edge.
Y oscillating arm 31 may be made to travel in the
As shown in Fig. 7, the cams 11 and "are
same direction and at the same speed as the
mounted upon the shaft 54 extending transverse
ly beneath the platform 65, these cams respec
tively operating two bell crank levers 19 and 80
which control three sliders 8|, 82, 83 mounted
web during the gumming operation, thus avoid
ing any smearing of the adhesive; this move
ment may be produced by a cam 53 upon the
same shaft 54, which causes the supporting post
49 of the gumming arm 31 to travel'along par
allel to the web ID, the post 49being supported
by twobars 55 slidable through guides 56, and
] operated by a link 51 attached to a cross head
58, as seen in Fig. 5.,
The‘ cutting vrollers I9, 20 may however be
given an intermittentmovement', so that ‘the ad
hesive can be appliedby the oscillating arm 31
‘during the momentary stoppage of the web; the
tensioning roller l1 will allow for this difference
between the movement of the web’ through the
printing mechanism' I6’, and‘ its movement
through the cutting rollers’l9, 20.
When the web is cut transversely by the rollers
on a fixed vertical guide rod 84; the upper slider
8|, which is connected by links 86 to the under
side of the platform 65, is also connected by a
buffer device 81 to the middle slider 82 on the
same guide rod, this middle slider being itself
connected by links 88 to'the bell crank 19. When
the latter rocks, these two sliders rise together CO
and cause the plate 14 to lift the blank up against
the mandrel 61. The continued rise of the slider
82 then compresses the spring buffer 81 to hold
the blank tightly against the underside of the
mandrel,v and brings the arms 15 upwards to fold 65
the blank into U-shape, and at the same time
the lower slider 83 operated by the bell crank
80 and links 85 causes the second pair 'of‘arms'
16 to move up with the ?rst pair; these two
‘- 20,200,‘; after the application of adhesive, the
leading end‘ of the severed blank has already 'pairs of arms have a mutual engagement by 7
passed between a pairv of supporting and guiding means of rollers I86 on the ?rst pair acting upon
rollers 59,'leading to anotherpair 60', before the
trailing edge of the same ‘blank is severed from
the web; the guide rollers 59, 60 are reduced in
diameter towards their ends, as seen in Fig. 2,
cam surfaces I81 on the second pair. ‘When the
?rst pair of arms 15 has reached its upper posi
tion, the continued rise of the second pair 16
causes their cams I81 to travel relatively to the
rollers I86 so that the arms of this second pair
can come together and complete the folding
ton body at the same time and to the same extent
as the exposure of the interior by the withdrawal
movement, the cams I 8'! being so shaped that
of the end-piece IDI of the mandrel.
While the pressure pad remains ?rmly engaged
one arm 19 moves in advance of the other, as
already mentioned, to ensure the proper over
lapping of the gummed edge of the blank.
The same cam shaft 54 is conveniently em
ployed for the operation of the ?nger 66 and
rocking guides 68 which locate the blank beneath
10 the mandrel 61; for this purpose the shaft is
provided with a third cam I88 engaging the roller
?tted extremity of a lever 89 mounted on a rock
ing shaft 99 which carries a second lever B! the
free upper end of the latter engaging with a lug
15 92 secured on a slidable spindle 93 and also with
the roller-?tted extremities of two arms 94. The
spindle 93, which is guided in lugs 93’ on the
bottom of the platform 65, carries the oscillating
?nger 69 and is controlled by a spring 95 which
20 acts to draw the blank on to the platform 65
after the ?nger has engaged behind the blank by
the sliding of the spindle 93 backwards by the
lever 9I while the platform is in the lowered po
sition seen in Fig. 7; the arms 94 are secured
25 to the spindles 96 of the rocking guides 68 so
that these guides can close together when the
platform 65 reaches its level position after the
blank is in place thereon.
The arms 15 are ?tted with thin vertical blades
with the whole length of the seam, the carrier 5
rotates for example through four steps or half
a revolution, each step bringing another mandrel
B‘! into position to receive a blank which is rolled
round it by the same folding mechanism. At
the ?fth position, the movable end-piece IIII of 10
the mandrel is withdrawn by the push rod I93
and the hinged section 896 of the pressure pad
99 is removed by another push rod IIl'I, so as to
allow the rolling or inturning of the narrow end
of the carton body at this position, by means of
grooved rollers I98 mounted in a rotary head
I99, the advance of which operates the push rod
I91 to remove the hinged section of the pressure
pad. The rollers I08 act to turn or curl over the
rim of the carton body so as to form a doubled 20
over ?ange or beading, which is subsequently
smoothed by a revolving punch or plunger III)
at'the next position of the carrier 69, with or
without forming a step inside the end of the car
ton. Just before the mandrel reaches the sev
out, and at the seventh position a transfer arm
I I I operates to strip the formed carton body from
the mandrel 91, the carton falling on to a con
30 91 set slightly obliquely as seen in Figs. 8 and 9,
and the arms 16 are ?tted with thin blades 98
extending inwards sufficiently to pass over the
top of the mandrel Bl.
When the blank has been folded round the
35 mandrel, a heated pressure pad 99, controlled by
passed on to a sliding or rocking holder. II2
cam--0perated levers I 90, descends between the
movements of the forming machine, this holder
edges of the blades 98 on to the seam or joint,
being adapted to take two or more of the ‘cartons
in turn. When one carton has been placedin
the folding mechanism then retiring downwardly
below the platform 65, and the mandrel 6'! be
40 ing moved on to the next operative position,
while the pressure pad 99 continues to hold the
blank in place.
The number of mandrels 61 may be varied, but
in the preferred construction illustrated, the ro
45 tatable standard or carrier 69 is provided with
eight mandrels spaced evenly around its axis and
the periodical movements of the carrier shift
these mandrels through 45 degrees in the hori
zontal plane; the intermittent motion can be ob
50 tained for example by the Maltese cross mech
anism ‘I9, ‘II, or by any other suitable means.
The mandrels 67 are preferably constructed in
such a way that the pressure can be applied to
the whole length of the seam, so as to ensure
55 a quick and sound joint, but where the carton
bodies are to be provided with a step or ?ange to
receive a sealing disc, as in the case of milk
bottles, the mandrels are arranged to allow a
portion of the conical folded blank or carton body
60 to be exposed for the inturning or rolling down
of the narrow end of the body. The mandrels
are therefore made with a hollow main portion,
shorter than the carton body by the amount re
quired for rolling or inturning, and an auxiliary
65 movable end-piece It I, making up the full length;
this end-piece, which is pivoted at IE2 at the
base or larger end of the mandrel, is controlled
for example by a push-rod I93 slidable through
the boss I94 and operated by a third lever I05
70 secured on the rocking shaft 90. The heated
pressure pad 99 is also provided with a hinged
section IE6 at one end, this section being nor
mally supported in line but being raised or tem
porarily removed (as hereafter described) to
75 expose the exterior of the narrow end of the car
enth position, the heated pressure pad 99 is
raised by the levers I89, the seam being new dried
veyor for example.
Preferably, however, the ‘carton bodies are
having part-conical rests or receptacles for car- 7
ton bodies which is oscillated in relation to the '
position upon one rest of the holder H2, and
as the transfer arm I! I is retiring ready for
stripping the next carton oiT its mandrel, the
holder H2 is displaced laterally so as to bring
another rest or receptacle into position facing
the next mandrel which is to deliver. After
the holder II2 has received the two cartons,
the transfer arm I II at its nextv stroke will
push both these cartons at the same time into
another machine in which the cartons are ?tted
with bottoms, either at their wider or at their
narrower ends according to the kind of carton, 50
e. g. milk-bottles or cream-tubs. Thus the trans
fer arm I I I, which is slidably operated by a link
I I4 from a lever I I 5 driven by a face cam, makes
short and long strokes, short strokes for the
?rst position of the rocking holder H2 and a 55
long stroke for the other position of the holder,
in which the laterally displaced carton body is
pushed into the drum by an auxiliary transfer
arm moving in synchronism with the first. After
the bottoms have been ?tted in. the carton bodies, 60
the latter are impregnated with wax or other
proo?ng material, being then ready for ?lling
and subsequent capping by means for example
of a sealing disc. pressed into place upon the
internal step formed by the plunger after the 65
inturning of the narrow end of the carton body
in the machine above described.
What I claim is:—
1. A machine for making frusto-conical carton
bodies, comprising cutting rollers, means for
feeding a web of material through said cutting
rollers, said cutting rollers adapted to make pairs
of incisions in said web of material and subse
quently to cut said web transversely, said pairs
of incisions being spaced along said web and 75
theincisions of each pair being equally inclined
cated above said platform, means for lifting
to the line of travel of said web through said
rollers, said transverse cuts. being curved to in~
tersect corresponding ends of said pairs of in
cisions, means for applying an adhesive to said
web adjacent‘ to‘one incision of each pair prior
to the making of said transverse cuts, means
for folding the blank de?ned by the intersection
said'platform to raise a blank against the lower
of said transverse cuts and incisions into frusto
conical shape with an overlap containing said
adhesive, and'means for pressing said overlap
to secure adhesion.
- 2. A machinefo-r making frusto-conical car
ton bodies, comprising a pair of co-operating
rollers, helically disposed cutting blades upon one
of said rollers, a second pair of co-operating
rollers, at least one curved cutting blade upon
one of the second-mentioned rollers, means for
feeding, a web of material through said pairs
of co-operating rollers in turn, the ?rst-men
tioned‘rollers producing pairs of straight inci
sions towards the opposite edges of said web,
at least one incision of each pair being inclined
- to the line of travel of said web, the second
25 mentioned rollers producing transverse cuts in
tersecting said pairs of straight incisions in said
web, means for applying an adhesive to said
side of said mandrel, said pivoted plate then
rocking to an inclined position parallel ‘to the
lower generatrix of said mandrel, a pair of arms
adapted to rise through said platform on oppo
site sides of said plate and to fold said blank
into U-shape, a second pair of arms adapted to
rise through said platform on opposite sides
of said plate outside the ?rst mentioned pair 10
of arms and to come together for folding the
ends of the U-shaped blank around said man
drel, and means for pressing said edges into
contact to secure adhesion.
4. A machine for making frusto-conical car
ton bodies, comprising ‘cutting rollers, means for
feeding a web of material through said rollers,
said rollers cutting out blanks of annular sector
shape from said material, means for applying
adhesive to‘ said web at a position corresponding 20
to a straight edge of the‘ blank to be produced
by said cutting rollers, a platform, means for
passing the blanks in turn upon said platform,
a rotatable standard, means for driving said
standard in intermittent rotation, a plurality
of ' frusto-conical
upon ‘said standard, each of’ said mandrels ar
riving in turn above said platform during the
intermittent rotation of said standard, means
web adjacent to one incision of each pair,‘ said
adhesive applying means being located between
30 the ?rst mentioned rollers and the second men ' for lifting the blank located upon said platform 30
into contact .with‘the mandrel located above said
tioned rollers, means ‘for folding the blank de
platform, means for folding the edges of said
, ?ned by the intersection of said transverse cuts
blank around said mandrel, means for pressing
and incisions into frusto-conical shape with an
overlap containing said adhesive, and means for said edges into contact to secure adhesion, said
pressing means’ including, a removable part 35
pressing said overlap to secure adhesion.
adapted to engage one of said edges at the narrow
' 3. A machine for making frusto-conical car
ton bodies, comprisingicuttin’g rollers, means for end of the folded blank and remaining partly op
‘feeding av web‘ of material through said rollers, erative during a substantial part of the rotation
said rollers cutting out blanks of annular sector of said standard, means for inturning the narrow
40 shape‘ from said material, means for applying , end of the folded blank in a. subsequent position of
adhesive to said ‘web at‘ a position corresponding said mandrel, and means for removing said re
movable part of said pressing means to inop
to a straight edge of the blank to be produced
by said cutting rollers, a platform, a plate pivoted erative position during the operation of said
in said platform and normally ?ush therewith, inturning means. '
means for passing. the blanks in turn upon said
platform, a mandrel of frusto~conical shape lo
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