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Патент USA US2136521

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Nov. 15, 1938.
c. |-|.v PETSKEYES
2,136,521
WRAPPER FEED MECHANISM FOR WRAPPING MACHINES
Original Fil-ed May 18, 1934
5 Sheets-Sheet 1
up,
‘ INVENTOR
BY
gm V7776
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ATTORNEYS
Nov. 15,1938.
'
c. H. PETSKEYES
2,136,521
WRAPPER FEED MECHANISM FOR WRAPPING MACHINES
Original Filed May 18, 1954
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INVENTOR
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Nbv. 15, 1938;
C. H. PET'SKEYES - -
2,136,521
WRAPPER FEED MECHANISM FOR WRAPPING MACHINES
Original Filed May 18, 1954
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WRAPPER FEED MECHANISM FOR WRAPPING MACHINES
Or‘iginal Filed May 18,_ 1934
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INVENTO
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BY.
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ATTORNEYS
Nov. 151938.
c. H. PETSKEYES
2,136,521
WRAPPER FEED MECHANISM FOR WRAPPING MACHINES
Original Filed May 18, 1954
5 Sheets-Sheet 5
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INVENTOR
Patented Nov. 15, 1938
was; .
‘ UNITED STATES
PATENT OFFHQE
2,136,521
WRAPPER, FEED MECHANISM FOR WRAP
PING NIACHINES
Charles H. Petskeyes, Davenport, Iowa, assignor
to Micro-Weston, Inc. , Bettendorf, Iowa, a cor
poration of Delaware
Original application May 18, 1934,- Serial No.
726,346, now Patent No. 2,088,157.
Divided and
this application June 18, 1935, Serial No. 27,144
6 Claims.
‘
This invention, which is a division of my co
Fig. 9 is a fragmentary section taken on the line
pending application Serial No. 726,346, ?led May
9—9 of Fig. ZL'showing the means for support
18, 1934, relates to wrapping machines and more
particularly to mechanism for feeding and sever
ing the carriage and the smoothing roll;
5 ing the wrapping material to the wrapping mech
anism.
.
One of the objects of the present invention is to
provide an improved means for feeding and
‘severing the ‘wrapping material which provides
.10 .for a rapid and more efficient feeding of the wrap
ping material to a wrapping station.
Another object is to provide a wrapping mate
‘ rial feeding means for wrapping machines in
‘ which the wrapping material is fed substantially
.15 continuously, except during a momentary period
While a sheet of predetermined length is being
severed therefrom.
.25
(Cl. 164-—49)
Another object is to provide a wrapping mate
rial feeding means in which the rate of feeding
movement accelerates and decelerates respec
tively just after and just before the severing op
eration.
Another object is to provide a wrapping mate
rial feeding and severing means in which the
length of the wrapping material to be severed can
‘
Fig. 10 is‘ a vertical section taken approxi
mately on the line Ill-l0 of Fig. 2, showing the
wrapper advancing rolls in section and showing
the cutter blade;
.
Referring to the accompanying drawings, in
which like numerals refer to like parts through
out the several views, the main frame of the wrap
ping machine with which the present invention is
associated, includes spaced side frames l and ‘7 15
upper and lower connecting members 2 and 3.
The present invention concerns the means for
feeding wrapping material such as plain or waxed
paper, or regenerated cellulose, and severing a
sheet of predetermined length from the wrapping 20
material being fed.
The wrapping material “A” is carried in the
form of a roll 4 which is supported on suitable
arms 5 carried by the side frames Land is passed
over an idling roller 6 to a material advancing
be readily changed.
. mechanism mounted upon an
‘With the above and other objects in view, the
present invention consists in certain features of
construction and combination of parts to be here
1 riage 1.
30 inafter described with reference to the accom
panying drawings and then claimed.
In the drawings, which illustrate a suitable em
. bodiment of the invention,
Figure 1 is a side elevation of a wrapping ma
chine in
35 porated;
which the present invention is incor
Fig. 2 is an enlarged vertical section taken
through that portion of the wrapping machine
with which the wrapper feeding and severing
r
Fig. 11 is a side view of the cutter blade; and
Fig. 12 is a section of the cutter blade taken
approximately on the line I2-l2 of Fig. 11;
v25
adjustable car
'
When it is desired to use a double thickness of
‘ wrapping material, additional wrapping material
. “B”, in the form of a roll 8, is rotatably supported 30
. on arms 9 carried by the rear ends of the'side
frames l. A reel I0 is also provided for support
ing a narrow strip of paper “C” having advertis
ing material thereon which may be fed between
35
the material A and B or under the material B.
i If desired, any suitable means may be provided
for circulating a refrigerant or cold air through
the centers of the wrapping material rollers so as
to cool the waxed surfaces of the wrapping mate
rial and thereby minimize the accumulation of 4:0
40 means is associated;
Fig. 3 is a horizontal section taken approxi ‘ wax on the working parts of the machine.
.
The carriage l rotatably supports a shaft II to
mately on the line 3--3 of Fig. 2;
Fig. 4 is an enlarged side elevation of the means which a smoothing roll E2 of substantial diameter
for driving the wrapper feed rolls, a portion of the . is secured.‘ The roll l2 preferably is hollow, and
if desired may be cooled by circulating cold air, 45
45 same being shown in section;
cooling fluid, or a refrigerant therethrough to
V Fig. 5 is a section taken approximately on the
cool the wax on the surface of the wrapping ma
line 5—5 of Fig. 4;
Fig. 6 is a section taken approximately on the
terial and, as previously described, thereby pre
vent the accumulation of wax on the working
line 6-45 of Fig. 5, showing one of the overrun
parts of the machine.
50 ning clutch devices;
The carriage 1 also supports a pair of wrapping
Fig. 7 is a section taken approximately on the
material advancing or feed rolls l3 which are
line 1-1 of Fig. 4, showing the means for adjust
- ing the stroke of the crank arm;
Fig. 8 is a section taken approximately on the
55 line 8-8 of Fig. 4;
journalled therein, the advancing rolls l3 having
their axes in a common vertical plane, and an
additional pair of wrapping material advancing 55
2
2,136,521
rolls I4 adjacent the rolls I3 and also having their
axes disposed in a common vertical plane.
The
wrapping material is conducted over the smooth
ing roll I2 and gripped by the feed rolls I3, suit
able guide plates I5 being disposed between the
smoothing roll I2 and feed rolls I3 to prevent
sagging of the wrapping material between these
rolls. The upper feed rolls I3 and I4 are prefer
ably of rubber having a metal core and the lower
ll) feed rolls I3 and I4 are preferably of metal
whereby the wrapping material will be positively
fed and will not slip during the feeding thereof.
The carriage ‘I also carries the cutting means
or knife blade I6, to be later described, the
knife blade being disposed to operate inter
mittently and to move between the pairs of roll
ers I 3 and I 4 to sever the wrapping material. The
lower feed rolls I 3 and I4 are provided with small
toothed gears I1 and I8, respectively, which are
20 meshed with a common idler gear I9 so that
when the gear I‘! is driven by means of a drive
gear 20 the gears I1 and I8 will be driven simul-K
taneously and in the same direction. The upper
rolls I3 and I4 are so positioned with respect to
the lower rolls I3 and I4 that during the feeding
of the wrapping material, the wrapping material
will be gripped between the rolls of each pair and
advanced toward the wrapping mechanism.
The rolls I3, at their ends opposite the gear H,
30 are provided with intermeshed pinions, and sim
ilarly the rolls I4 are provided with intermeshed
pinions 22 so that the upper rolls I3 and I4 will
be positively driven by the lower rolls I3 and I4.
The forward rolls I4 are so geared to the rear
35 rolls I3, or are of such diameter that they may
rotate at a slightly greater speed than the rear
rolls I3, whereby the wrapping material extend
ing between the pairs of rolls may be placed un
der tension if desired, to facilitate the operation
1.10 of severing the wrapping material.
The shaft II, which carries the smoothing roll
I2, is journalled in the carriage 'I, and this shaft
carries a drive gear 23 which is meshed with the
gear 20, which is meshed with roll gear I'I. The|
shaft II is rotated by means of a reciprocating
mechanism, which is arranged to provide a con
tinuous feed of the wrapping material to the
wrapping mechanism except for the momentary
periods when the cutter blade I6 severs the wrap
50 ping material to provide a sheet of wrapping ma
terial of predetermined length, and which mech
anism is also arranged in such a manner that the
speed of advancement of the wrapping material
is accelerated and decelerated, respectively, just
after and just prior to the operation of the cut-1
ter blade I6, so as to avoid any sudden stopping
and starting of the wrapping material being ad
vanced to the wrapping mechanism.
The mechanism for rotating the shaft II is
60 carried within a suitable housing 24 which is
pivoted upon the shaft II.
Slidably mounted
within the housing 24 is a reciprocable element
25 having a longitudinal opening 26 therein
which receives the end of the shaft II.
The re
ciprocable element 25 is connected at its lower
end with a crank arm 21 mounted on a drive shaft
28. The shaft 28 is provided with a sprocket 29
that is driven by means of a chain belt 3|] from
a sprocket 3I mounted on a sleeve 32, the sleeve
70 32 being rotatably supported on a main wrapper
drive shaft 33.
The reciprocable element 25 is provided at each
side of the opening 2'6 with rack teeth 34 and 35
which mesh with pinions 36 and 31, respectively,
the pinions 36 and 31 being mounted upon short
shafts 38 and 39, respectively, which are carried
by the housing 24. The shafts 38 and 39 also
carry freely rotatable pinions 40 and M, respec
tively, which mesh with a common pinion 42
secured to the shaft II. A driving connection in
the form of an over-running clutch 43 is pro
vided between the pinions 36 and 40, and a
similar driving connection in the form of an
over-running clutch 44 is provided between the
pinions 31 and M. These over-running clutch 10
devices are preferably of the friction type, as
indicated in Fig. 6, and so arranged that a
driving connection is effected between the two
pinions 31 and M or 36 and 40 only during the
rotation of one of the pinions 36 or 31, as the case 15
may be, in one direction. In other words, the
clutch devices act as free wheeling units which
effect the drive during only one direction of ro
tation. Also, the clutch devices 43 and 44 are
opposed to each other so that the clutch device
43 provides a driving connection between the pin
ions 35 and 40 upon one direction of travel of
the reciprocable element, and the clutch device
44 provides a driving connection between the
pinions 3‘! and M during the travel of the recip 25
rocable element 25 in the opposite direction, so
that regardless of direction of travel of the re
ciprocable element 25, the shaft I I, and conse
quently the feed rolls I3 and I4, by means of
the chain of gears described, will always be driv 30
en in the same direction. This same motion,
however, can be accomplished by other devices
acting in a similar manner, such as, for example,
a ratchet and pawl device.
The cutter blade I5 is provided with a series
of sharp cutting teeth 45, and is arranged to
move upwardly between the pairs of feed rolls
I3 and I4 through a slot 46 provided in a suit
able wrapping material support 4'! disposed be
tween the pairs of feed rolls I3 and I4. The 40
cutter blade I6 severs the wrapping material at
the time the crank 21 is at dead center at the
end of each stroke, i. e., when the reciprocable
element 25 changes from one direction of travel
to the other. At this time the feed rolls I3 and
I4 are momentarily at rest.
The cutter blade I6 is detachably mounted
upon a vertically reciprocable plate 48 which is
guided at its ends in slots 49 formed in the sides
of the carriage ‘I. The plate 48 is preferably 50
provided with an electric heating element 58
which transmits heat to the cutter blade I 6 to
melt and thereby prevent the accumulation of
wax on the cutter blade.
The plate 48 is secured to a bracket 5I which 56
is pivotally connected with a rocker arm 52 se
curely mounted on a pivoted shaft 53, the shaft
53 being pivotally supported by the carriage ?.
The shaft 53 is provided with a lever 54 which is
connected by means of a downwardly extending 60
connecting rod 55 with one end of a pivoted dou
ble ended lever 5'5 (Fig. 2), a suitable coil spring
upwardly
51 being employed
and maintain
to urge
thethe
plate
connecting
48, whichrod
sup
ports the cutter blade E6, in its downward posi~ 65
tion. The opposite end of the lever 55 is provid
ed with a suitable cam surface or cam roller 5-3
which engages with a suitable cam 59 keyed to
the rotatable hollow sleeve or shaft 32.
The
cam 59 is cylindrical except for a small cam 70
projection 60 which engages with the cam roller
58 and through the linkages described, causes
the cutter blade I 6 to travel upwardly between
the pairs of rollers I3 and I4 and sever the wrap
ping material.
The cam projection 60 is car~
2,136,521
ried by a removable block 6| suitably secured to
the cam 59 and is so arranged with respect to the
crank arm 21 that it only engages with the cam
roller 58 at the end of each stroke of the recip
rocable element 25, i. e., when the crank arm 21
is at one of its dead center positions.
Because of the use of the reciprocable element
25, which is actuated by a crank arm 21, the ad
vancement of the wrapping material is substan
10 tially continuous except for the momentary period
that the reciprocable element 25 changes from
one direction of travel‘ to the other, and at which
ping’ material by the feed rolls l3 and I4 during
this movement of the carriage, the carriage is
connected by linkages, including a bell crank lever
14 and links 15 and T6, with an arm ‘ll pivoted onv
the crank shaft 28 adjacent the sprocket 29.
This arm 11 carries spaced idler rolls or sprockets
‘it which engage with the opposite driving and
return portions of the chain belt 3|] so that upon
movement of the shaft l l with the carriage ‘I
with respect to the axis of the crank shaft 28, the 10
arm ‘ll’, through the engagement of the chain belt
39 with the idlers 18, will cause the crank shaft 28
time the cutter blade l6 severs the wrapping ma
to rotate an amount‘ proportional to the dis- -
terial. Also by using the reciprocable element 25
tance traveled by the shaft H, and thereby pre
vent rotation of the shaft H and the consequent
and the crank arm 27, the rate of travel of the
wrapping material is gradually increased after
the severing operation and then is gradually. de
creased just prior to the next severing operation
so as. to. prevent any sudden stoppage or sudden
20 advancement of the wrapping material, and thus
avoid danger of tearing the wrapping material.
In order toprovide for a change in length of
the sheet of wrapping material which is severed
from the material advanced by the feeding rolls
25 i3 and Ill, the stroke of the reciprocable element
25 is made adj‘- stable, and this is accomplished
by adjusting the throw of the crank arm 21. The
crank arm 2'! is provided with grooved guide
ways Eta which slidably receive a block 62. The
30 block 62 carries the crank pin 63 to which the end
of the reciprocable element 25 is pivoted, and is
threaded to receive an axially immovable ad
justing screw 64 carried by the crank arm 21.
The screw .64 is rotated within the crank arm by
‘means of meshed gears 65, one of which is rotated
by a suitable hand wheel 66. By rotating the
hand wheel 66 the block 62, which carries the
crank pin 63, may be moved toward or away
from the axis of the shaft 28 to decrease or in
40 crease the throw of the crank, as the case may
be, and thus predetermine the degree of rota
tion of the feed rolls, and thereby predetermine
the length of wrapping material to be advanced
by these rolls.
If desired, the crank pin block 62 may be pro
45
vided with an indexing ?nger 6'1 which may be
set according to index marks 96 appearing on the‘
crank arm, which correspond with different
lengths of the wrapping material.
50
3
In order to properly locate a sheet of wrapping
material, advanced and severed from the source
of supply over the station where wrapping of the
article is started, the carriage ‘I is slidably and
adjustably supported on suitable guides 68 car
55 ried by the side frames. Adjustment of the car
‘ riage 1 is obtained by means of screws 69 which
are threaded into depending brackets 1!) car
ried by the carriage and which are operated by
means of suitable gearing ‘H from a shaft 12 ex
60 tending between the side frames l, the shaft hav
ing a suitable hand wheel 73' arranged externally
of one of the side frames which can be turned
to cause the carriage ‘I to travel forwardly or
rearwardly with respect to the wrapping mech
65 anism, and thereby to serve as a means for prop
erly locating the sheet or sheets of wrapping ma
rotation of the feed rolls l3 and [4, thus pre
venting advancement of the wrapping material
during adjustment of the carriage ‘I.
The drive mechanism for the wrapping mate
rial feed mechanism permits the wrapping ma
terial to feed continuously except for the momen
tary period of the severing operation without
jerking as the rate of feed decelerates just prior
to the cutting operation and gradually accelerates
just after the. cutting operation. This prevents
tearing of the wrapping material and provides
for a more e??cient and more nearly continuous
feeding of the same.
Although a single embodiment of the invention
has been herein shown and described, it will be 30
understood that numerous details of the con
struction shown may be altered or omitted with
out departing from the spirit of this invention as
de?ned in the following claims.
What-I claim is:
35
1. The method of feeding an individual sheet of
wrapping material to a wrapping mechanism from
an endless web of wrapping material, which com
prises withdrawing a length of the wrapping ma~
terial, tensioning a portion only of the withdrawn 40
wrapping material in the direction of withdrawal,
the tensioned portion being the last part of the
length withdrawn, the ?rst part of the withdrawn
length being substantially without tension, and
moving a cutter through the‘ tensioned portion in‘ 45
a direction substantially normal to the plane of
said portion, the wrapping material being held at
end parts of the tensioned portion substantially
removed from the path of the cutter during cut
ting and the cutting operation being completed 50
without supporting said portion of the wrapping
material against de?ection in the direction of
cutter movement other than at said end part, said
tension being independently suf?cient to hold the
wrapping material without objectionable deflec 55
tion during the cutting.
2. In a wrapping machine having a wrapping
mechanism and a source of wrapping material,
means for feeding said wrapping material to said
mechanism comprising a pair of feed rolls for 60
gripping and advancing said material from said
source, an intermittently operative cutting means
for severing the material advanced by said rolls,
and drive means for rotating at least one of said
rolls continuously except during the operation of 65
This movement also provides a means for locating
said cutting means, said drive means comprising
a shaft having a positive driving connection with
at least one of said rolls for-rotating the rolls in
the discharge position of the wrapping material
material-advancing direction, a rotatable crank,
terial with respect to the article to be wrapped.
70 whereby the overlapping position of the ends of
the material with respect to the bottom of the
article being wrapped can be predetermined.
In order to compensate for the forward or
rearward movement of the carriage ‘l and pre
75 vent advancement or retardation of the wrap
20
means for rotating the crank, a reciprocable ele 70
ment connected with said crank and pivotally and
slidingly arranged on said shaft, a pair of over
running clutches opposed. to one another with re
spect to driving relation, each clutch actuated by
a rack on the reciprocable element and connected 75
4
2,136,521
by gearing to the shaft to rotate the latter in the
same direction at each stroke of the reciprocable
element, said clutches being mounted for arcuate
movement about the shaft and arranged to fol
low the pivotal movement of the reciprocable ele
ment.
3. In a wrapping machine, a source of wrapping
material, means for advancing wrapping material
from said source, comprising a pair of feed rolls,
10 a second pair of feed rolls intermediate said ?rst
uniform intervals and with a period of dwell after
each withdrawal, tensioning a portion only of
each length withdrawn, the tensioned portion be
ing the last part of the withdrawn length, the
first part of the withdrawn length being substan
tially without tension when the dwell occurs, and
moving a cutter through the tensioned portion
during said dwell period in a direction substan
tially normal to the plane of said portion, the
wrapping material being held at end parts of the 10
pair of rolls at a greater peripheral speed than
tensioned portion, substantially removed from the
path of the cutter, during the cutting and the cut
said second pair for tensioning the wrapping ma
terial extending between said pairs of rolls, and a
ing said tensioned portion of the wrapping mate
pair and said source, means for rotating said ?rst
reciprocable cutter intermittently operable be
tween the feed rolls in a plane substantially nor
mal to the plane of Wrapping material tensioned
between the feed rolls, said cutter arranged to
sever the wrapping material while the latter is
20 restrained against de?ection in the direction of
cutter movement solely by said tension.
4. In a wrapping machine, a source of wrapping
material, means for advancing wrapping material
from said source, comprising a pair of feed rolls,
25 a second pair of feed rolls intermediate said first
pair and said source, means for rotating said
?rst pair of rolls at a greater peripheral speed
than said second pair for tensioning the wrapping
material extending between said pairs of rolls, a
30 supporting member positioned between the pairs
ting operation being completed without support
rial against de?ection in the direction of cutter 15
movement other than at said end parts, said ten
sion being independently sufficient to hold the
wrapping material without material de?ection
during the cutting.
6. The method of feeding a succession of indi
vidual sheets of wrapping material from an end
20
less web of wrapping material which comprises
intermittently withdrawing successive lengths of
the wrapping material at substantially uniform
intervals and with a period of dwell after each 25
withdrawal, the rate of wrapping material feed
being gradually accelerated at the beginning of
each withdrawal and gradually decelerated at the
end of each withdrawal, tensioning a portion only
of each length withdrawn, the tensioned portion 30
being the last part of the withdrawn length, the
of feed rolls and having its upper surface below
the normal level of wrapping material extending - ?rst part of the withdrawn length being substan
tially without tension when the dwell occurs, and
between the rolls, and a reciprocable cutter iii
termittently operable between the feed rolls and moving a cutter through the tensioned portion
during said dwell period in a direction substan 35
35 past the supporting member in a plane substan
tially normal to the plane of wrapping material tially normal to the plane of said portion, the
wrapping material being held at end parts of the
tensioned between the feed rolls, said cutter ar
ranged to sever the wrapping material while the tensioned portion, substantially removed from the
path of the cutter, during the cutting and the
latter is restrained against deflection in the di
rection of cutter movement solely by said tension, cutting operation being completed Without sup 40
porting said tensioned portion of the wrapping
and the cutter arranged during the severing op
eration to move the wrapping material away from material against de?ection in the direction of
cutter movement other than at said end parts,
the supporting member.
said tension being independently sufficient to hold
5. The method of feeding a succession of in
the wrapping material without material de?ec 45
45 dividual sheets of wrapping material from an
tion during the cutting.
endless web of wrapping material which com
prises intermittently withdrawing successive
CHARLES H. PETSKEYES.
lengths of the wrapping material at substantially
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