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Патент USA US3078637

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Feb. 26, 1963
R. G. DEXTER
3,078,626
MEANS AND METHOD oF WRAPPING
Filed Aug. 5. 1960
5 Sheets-Sheet 1
ONÍ
Feb. 26, 1963
3,078,626
R. G. DEXTER
MEANS AND METHOD oF WRAPPING
Filed Aug. 5, 1960
5 Sheets-Sheet 2
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Feb. 26, 1963
R. G. DEXTER
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MEANS AND METHOD oF WRAPPING
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Filed Aug. 5, 1960
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R. G. DEXTER
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MEANS AND METHOD oF WRAPPING
Filed Aug. >5, 1960
5 Sheets-Sheet 4
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Feb. 26, 1963 .
3,078,626
R. G. DEXTER
MEANS AND METHOD OF WRAPPING
Filed Aug. 5. 1960
5 Sheets-Sheet 5
INVENNToR.
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3,078,626
Patented Feb. 26, 1953
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3,678,626
Robert G. Dexter, Harvard, Mass., assigner, by mesne
mandrel. This is effected by high velocity Vacuum and
the label sealer mechanism. Wherupon, an individual
skein of yarn is vacuum drawn into the tubular mandrel
by the operation of the vacuum from the high velocity
Filed Aug. 5, 1960, Ser. No. 47,636
35 Claims. (Cl. 53-3)
is closed by a guillotine type closing device to cut off
air flow while the label is tubularly wrapped about the
mandrel by vacuum and sealed by the label sealing
MEANS AND METHGD 0F WRAPPENG
assignments, to Emile Bernat & Sons Company, Ja
maica Plain, Mass., a corporation of Massachusetts
vacuum system through the ram assembly. The mandrel
The present invention relates to a means and method
mechanism.
of labelling or wrapping. More particularly it relates
primarily to a means and method of labelling or wrap
ping easily deformable products such as skeins of yarn
with a wrap around wrapper. While the present inven
tion will be described primarily in connection with a ma
chine speciñcally constructed for labelling skeins of yarn
with a wrap around label, it should be understood that
the invention may be utilized for other similar purposes,
including for example, the application of plain tubular or
partially tubular Wrappers to malleable or deformable
products.
The ram assembly then removes the skein
and the tubularly formed label in the same direction,
sliding the label off the mandrel and onto the skein. The
ram is then moved rearwardly by the drive mechanism to
a selected point at which the labelled skein is ejected
from the machine by high velocity air pressure.
While this device is primarily intended for use in
labelling yarn, it is obviously adapted for skeins or
similar articles with unlabelled wrappers. Therefore,
reference herein to labels is applicable to wrappers also.
These and other objects and advantages of the present
20 invention will be more clearly understood when con
A skein of yarn is an elongated length of yarn Wound
ovally about itself as an elongated loose bundle. A iin
ished commercial skein is normally Wrapped with a tubu~
sidered in conjunction with the accompanying drawings,
in which:
FIG. l is a cross sectioned fragmentary side elevation
lar wrapper or label about its center with the wrapper or
of the yarn labelling machine,
label formed of a rectangular paper with its opposite 25
«FIG 2 is a top plan View of the yarn labelling machine
ends sealed together.
omitting certain portions of the machine for clarity,
These skeins of yarn are normally wrapped by hand.
FIG. 3 is a side elevation of the machine taken from
In such a process the operator lays a skein of yarn on a
the side opposite FIG. l,
suitably gummed label. The wrapper or label is there
FIG. 4 is a perspective fragmentary detail of a portion
`after rolled about the skein and sealed at its ends. This
of the drive mechanism and associated mechanism of the
procedure is time consuming and expensive.
machine in detail,
It is therefore an object of the present invention to
provide a novel means and method for automatically
FIG. 5 is a cross sectional view taken substantially
along the line 5_5 of FIG. 2, and,
`
FlG. 6 is a schematic illustration of certain cams.
ln the present invention there is an operative relation
between a number of mechanisms including a label trans
wrapping skeins of yarn rapidly and more eli’iciently
than heretofore possible by manual methods heretofore
known.
It is also an object of the present invention to provide
a wrapping machine which is relatively simple in con
struction, certain of operation and easy to maintain, and
which may effectively reduce the cost of Wrapping or
port assembly titl (FIGS. l and 3), which moves in~
dividual labels from a table ll through a gumming
machine assembly 9 (FIGS. 2 and 5), for gumming an
edge of the label to a standby table l2. `From this table
l2 the gummed label is transported in a sequential opera
labelling deformable products.
=In the present invention there is provided a label or
tion to a position over a mandrel i3 (FIGS. l and 3).
wrapper transport assembly which picks up individual
When the label is positioned over perforated mandrel 13,
labels or wrappers, gums one edge and tubularly forms
the liow of high velocity air inward through the mandrel
.the label or Wrapper' about a thin tubular mandrel. Si 45 perforations causes the label to Iwrap itself around
multaneously, an individual skein of yarn is fed into the
mandrel 13. The label thus seals the mandrel perfor
mandrel. This individual skein of yarn and the label or
ations causing an increased vacuum in the mandrel
wrapper wrapped about the mandrel are then simulta
which is suñicient to draw a skein into mandrel 13 from
neously pulled from the mandrel in the same direction.
chute ld. The high velocity vacuum is supplied to man
ln this step the formed tubular label or wrapper slides 50 drel 13 through ram assembly 15. This ram assembly in
from the mandrel onto the body of the skein. The
cludes a tubular ram i6 amounted on a reciprocable car
labelled or Wrapped skein is then ejected from the ma
riage 17 for movement to and away from the mandrel
chine.
with the ram aligned with the end of the mandrel. Means
The yarn wrapping machine is formed with a number
for sucking high velocity air through the ram 16 are con
55
of operatively related components which include the label
trolled to form the label and suck a skein of yarn into the
transport assembly, the label gumming mechanism, the
mandrel 13 and partially into the end of tubular ram 16
label sealer mechanism for sealing the label in a tubular
While the ram is engaged with mandrel at the end of its
form, the mandrel assembly on which the tubular label
forward movement. A label sealing means 18 (FIGS.
is formed and within which the skein is positioned, ram
1 and 3) seals the glued portion of the label once it is
60
assembly for moving the skeins and labels from the
wrapped around mandrel 13. A screen or perforated
mandrel, a vacuum system for feeding labels and a high
bañie in the tubular end of mandrel 16 positions the
velocity air vacuum and pressure system for forming
skein and prevents its being sucked in too far. On the
labels and feeding and ejecting the product. Each of
these major components is operatively and synchronously
related to the other mechanisms.
rearward movement of the ram 16 fingers 19 on the ram
65 draw the tubular label otî the mandrel onto the skein
The label transport assembly, as previously stated,
moves individual labels from a stack through the gumming
mechanism Which automatically gums one edge of each
label to an intermediate waiting station and from there
to a position over the tubular mandril in the mandril 70
which is also being drawn from the mandrel by air
suction through the ram.
At a selected point the com
pletely labelled skein is ejected from the machine by
a reversal of air ñow in the ram.
The labelled or
wrapped skein then drops through a collecting chute.
assembly. The gummed label is thereafter wrapped about
Substantially all of these mechanisms are synchronously
and sealed on itself to form a tube coaxial with the
and operatively controlled by cam and> lever arrange-`
envases
3
ments through motor and gear transmission 24 and a main
drive shaft 21.
For purposes of clarity the driver mechanism and asso
ciate components will be described initially with the
4
drawn to hold the gummed label in registered position
while adhesive is -becoming tacky during the operation of
the device. Air is supplied to the interior of the table 12
by a vacuum 59 connected at one end to the valve 53.
mechanisms operated thereby described subsequently in
their operative relationships.
The label transport assembly 10 is moved forwardly
and rearwardly by the assembly best illustrated in FiG. 4.
The frame 2.9 formed with substantially rectangular
sidewalls, front, rear and top, supports the main drive
shaft 21 suitably journalled at its ends in bearings 23.
The motor and gear transmission 24 (FIG. l) drives the
main shaft 21 through chain coupling 26 which inter
connects sprockets 27 and 23 keyed respectively to the
transmission 24 and shaft 21. As shown in FIG. 5 the
cams 30, 31, 32, 33, 34 and 35 are also successively keyed
to the shaft 21. Cam 35 may be secured externally of the
frame 20 while cams 30, 31, 32, 33 and 34 may be secured
port is effected through the lever assembly 4G. This lever
assembly 4i? which includes lever extensions 6ft and the
integral lever extension 61 is supported on the shaft 36.
it is reciprccated back and forth by means of the cam
33. The lever extension 65 follows the cam 33 through
the cam follower roller 62. The upper end of the lever
extension d1 engages the transport carriage 63 through a
linkage lever 64. The carriage 63 is formed of a plate
In this assembly the fore and rear movement of the trans
having four wheels 65 mounted at its corners. These
wheels 65 engage the rails 66 and 67. These rails 66
and 67 are parallelly secured by suitable means such as
Also secured to the frame 29 is a cam follower lever
frames 63 to the side of the frame 20. Rotation of cam
support shaft 36 (FIGS. l and 5). This shaft 36 is suit
ably supported by journals parallel to shaft 21 and in turn 20 33 actuates the lever assembly 4t) to reciprocably move
the carriage 63 on the rails 66 and 67 in a sequence here
supports a plurality of cam follower levers. These
inafter described.
levers include the cam follower lever 38 adapted to follow
Simultaneously with this reciprocal movement, an up
the cam 30, cam follower lever assembly 40, adapted to
and down movement of the legs 45 carrying the support
follow cam 33 and cam follower lever 41 adapted to
44 is effected. Cam 34 controls this vertical movement
follow cam 35.
of the support 44 of the label transport assembly 10. This
Lever 33‘and cam 30 control the air flow inthe ram 16.
cam 34 engages the cam follower 43 which is suitably
Lever 39 and cam 31 control the forward and reverse
pivotally supported on the frame by an extension 69.
movement of the ram 16 and operation of fingers 19.
The cam follower 43 comprises an angular lever having
Lever assembly 40 and cam 33 control the forward and
internally‘of the frame.
reverse movement of the label transport assembly 1€). ‘
a‘ cam follower roller 7i) on one leg.
The other leg of
the lever 43 pivotally engages the transverse bar 71.
This transverse bar ’71 is supported for parallel vertical
lagîl transport vacuum pickup means and label standby
displacement by a second lever 72 suitably pivotally se
tal e.
cured parallel to the said one leg of lever 43.
Cam 32 actuates lever 42, which, through a lever link
The legs 45' are provided with a pair of roller shafts
age system controls the label sealing means 18. Cam 35
and rolls ‘io’ (FlG. 5), which project through vertical`
34 actuates lever 43 which in turn is adapted to raise and
slots ’73 formed in the carriage 63 and in the sleeves 46
lower the label transport assembly 10.
which sleeves are fixed to the carriage and are aligned
The label or wrapper transport assembly lil is moved
with the lower ends of the legs 45. These roller assem
forwardly, downwardly, upwardly and rearwardly in
sequence. This transport assembly 10 comprises a hori 40 blies formed as part of the legs 45 engage the slot in
transverse bar 71 so that they are free to roll lengthwise
zontal support 44 adapted to support various air tubes.
in this slot as the carriage 63 moves, but will cause legs
The support 44 is formed with two parallel transport legs
45 to move up and down together with transverse bar 71.
45. Sleeves 46 are coaxial with these transport legs 45
Springs 74 (FiG. 3) connected at one end of the legs
and are adapted to support legs 45 for vertical movement.
A plurality of air conduit tubes 47 are secured to the 45 45 and at the other to sleeves 46 normally downwardly
tension the support 44. Thus on vertical movement of
transport assembly 1() with one end of each connected
the transverse bar 71, on rotation of cams 34, the roller
through the rigid tubes 48 at the rear of the assembly
assemblies cause corresponding movement of the legs 45.
10 to individual pickers 49. The pickers 49 or suction
Air suction in the pickers 55 and 49 is synchronously
cups are adapted to be engaged with the top label of a
controlled with the transverse vertical movement of the
stack of labels positioned on label stack table 11. This
transport assembly 1€» by means of the lever assembly
label stack table 11 is suitably supported by I beams 50
Lever 41 and cam 35 control the air pressure to the
on the frame. The table 11 may have suitable conven
tional means for alignment of a stack of labels or wrap
pers. If desired, the label or wrapper separator means 51
comprising a small reversely bent tube 30 through which
air is blown may be used to assure the separation of the
top label from the labels under it. Such separator means
51 are commonly used in the printing industry. The air
shown in FIG. 3. The cam 35 on shaft 21 engages lever
41 mounted on shaft 36 to control its pivotal movement.
The lever 41 is connected by a pivotally interengaged
connectinly rod 75 to the piston of the vacuum valve 53.
Spring 76 interengages the lever 41 and the air cylinder
53, thereby causing the lever 41 to bear against the cam
35. The vacuum valve 53 is connected between the
vacuum pump (not shown) and the pickers 49 and 55
52 to the air cylinder valve 53. Additional llexible air 60 through the tube 52 and thereby controls the on-otî air
suction to the pickers 49, and 55. A suction through
tubes 54 are connected to pickers 55 through the rigid
the pickers is created on the upward and forward move
tube 48 at the forward end of the assembly 10. These
ment of the transport assembly 1€). The air is shut ofi
tubes 54 are also connected to the master air tube 52.
as the pickers are about to move in their rearward direc
The rigid tubes 48 which support pickers 49 and 55 are
tion, so that the labels are moved in the forward direc
adapted to be resiliently displaced on downward move
tion and released when the pickers have reached their fore
ment of the transport. These tubes 48 are slidably posi
most position. The pickers 49 are moved from a rear
tioned within supports 56 but are downwardly tensioned
ward position over the label stack tables 11 to a position
by means of helical springs 57 coaxial with the tubes and
directly over the table 12 while the pickers 55 are moved
engaging flanges of the tubes at one end and the support
70 from a rearward position over the table 12 to a position
56 at the other ends.
over the mandrel 13. Thus labels picked up from table
A vacuum or standby table 12 having 4a plurality of per
»11 are transported to the table 12 and then sequentially
forations 58 is supported on suitably arranged legs on
to the mandrel 13.
the frame 20. This table 12 is hollow and has a plurality
interposed between table 11 and table 5G is a gumming
of perforations 5S. The hollow interior forms a mani
fold-like member from which vacuum is adapted to be 75 device generally illustrated at 9. This device 9 issuitably
tubes 47 are connected through a suitable master air tube
5
aorsßae
6
supported on the frame 20. The device includes a glue
carries the `ram with it over a distance deñned between
pot 77 for an adhesive medium. Gumming rolls 73 are
stops 98 on the rails 96, 97. The sleeve 108 however
journalled to pick up adhesive from the glue pot 77.
will move over a greater distance and will continue to
move forwardly and rearwardly even after the ram 16
Drive rolls 79 which frictionally engage the rolls 78 are
positioned on -drive shafts 80. These drive shafts are in 5 and carriage 17 have been stopped by stops 9S. The
difference in longitudinal movement of the sleeve and the
turn connected through the gear transmission box 81 and
ram is utilized to effect control of fingers 19 as hereafter
drive belt 82 to the motor 83 which causes constant ro
described.
tation of the rolls 7S and 79. rThe rolls 7S and 79 are
The ram 16 moves forwardly and rearwardly once with
positioned with their line of tangency common to the
plane in which labels or wrappers moved from table 11 10 each cycle of revolution of the shaft 21. At the same
time, the forward and rearward movement of lever 38
to 12 will pass. One edge of such labels are passed be
causes the air valve 101 to effect a suction in the ram
tween the rolls 78 and 70 for gumming so that the label
on its forward movement, its forward dwell, and part of
positioned on table 12 is normally gummed along one side
edge.
its rearward movement.
This causes a skein of yarn to
be drawn from the chute 14 into the mandrel 13 and
sequentially draws the skein from the mandrel with
directly over the mandrel 13 after the label transport as
the label wrapped about it. When the ram reaches a
sembly moves downwardly to a point at which the pickers
selected point, in its rearward movement, the air suc
55' are substantially horizontally aligned with the mandrel.
tion is reversed and air is blown forward through the
The pickers 55 are non~symmetrically arranged on either
side of the mandrel 13 so that a greater part of the label 20 ram. A chute positioned below the ram directs the fall
ing, but wrapped, skein from the machine (not shown).
is positioned on the side of the mandrel closer to the
The sleeve 108 which frictionally engages the ram
gumming machine 9.
16 (FIG. l) has secured to it four forwardly projecting
Air suction through the holes 85 in the mandrel effected
fingers 19. These lingers are radially arranged, pref
in a sequential operation hereafter described, causes the
erably 90° apart about the sleeve. Each finger 19 is
label released by pickers 5S to be wrapped tubularly about
pivotally secured at one end 109 to the sleeve and is
the mandrel. Opposite edges of this label including the
also provided with a conventional spring means, not
previously gummed edge are sealed together by the label
The labels carried forwardly by pickers 55 are released
sealing means 13. This means 1S includes a pressure bar
shown, tensioning the fingers inwardly so that all four
fingers are tensioned toward a converging axial center.
£6 mounted transversely on one end of the angular lever
37. This lever 87 is in turn pivotally supported inter 30 Each finger 19 has a cam roller 110 mounted inter
mediate its ends. These cam rollers 110 are adapted to
mediate its end in the bracket 0S in turn mounted on
bear against the ram 16. The ram is formed with an an
the frame 20. The other end of the lever 87 is pivotally
nular narrowed shoulder 93 at its forward end. The
interengaged through a linkage system 89 with a cam
forward ends of the fingers have frictional engaging tips
follower 90. This cam follower is interengaged with
cam 92 mounted 0n shaft 21. Lever linkage 89' may be 35 111. These tips are adapted to engage the sides o-f the
mandrel at the forward position of the ram and sleeve.
suitably journalled in a support 91 mounted on the
The ram may be moved forward to engagement withl
frame 20.
the mandrel 13 by the forward movement of the lever
Immediately after with the positioning and forming of
39, and the frictional interengagement of the sleeve 108
a tubular wrapper or label about the mandrel 13, a skein
of yarn is drawn from an end to end row of skeins in 40 and the ram 16. At this position of engagement of the
«the chute 1d into the mandrel 13. This is one function
of the ram assembly 15. In this assembly the ram 16
is a tubular elongated member having a forward end
formed with an external shoulder 93 and a screen mesh
ram 16 and mandrel 13, the ram’s forward movement is
stopped. However, the lever 39 continues to move the
sleeve 10S forwardly as there is but a frictional inter
engagement between the sleeve 108 and the ram 16.
During this continued forward movement, the lingers
9d, inwardly recessed. The ram 16 is mounted in a
carriage 17 having side walls, top and bottom. The car 45 19, which are initially spread apart are moved forward
and close or clamp about the mandrel 13 when the cam
riage 17 has eight wheels 95 arranged in pairs, with two
rollers 110 are moved over the narrowed shoulder 93. On
pairs on each side. These wheels 95 slidably engage rails
the rearward movement of the ram 16, the lingers 19
96, 97 for reciprocal movement of the carriage and the
are spring clamped about the mandrel and thereby draw
ram between stops 98 on the rails. The rails 96, 97 are
50 or slide a label positioned on the mandrel rearwardly.
suitably mounted on the frame 20 as illustrated at 99.
This label is drawn onto the skein which is also drawn
A flexible air tube 100 is connected to the rear end of
out from the mandrel by suction through the ram. The
the tubular ram 16 (FlG. l). This air tube 100 is con~
fingers 19 are spread when the ram reaches its rearmost
nected at its other end to an air valve indicated at 101.
position and the sleeve continues to move rearwardly.
The valve 101 is tubularly connected to a suitable source
55 This spreading occurs when the rear of the ram engages
of air so that air may be drawn or blown through th
stops 93 on the rails 96, and 97. At this point the ram
ram 16 depending on the position of the valve 101.
An air flow controlling piston in the valve 101 is
remains stationary, but the sleeve because of its fric
tional interengagement continues to move rearwardly
connected to the connecting rod 102. This rod in turn
is connected through a linkage 103 to the upper end of 60 causing the cam rollers 110 to move upwardly over the
shoulder 93 and thereby open and release the fingers from
the lever 3S. A helical spring 104 connected at one
their interengagement with the wrapped skein.
end to frame 20 and at other to upper end of lever 3S
in order to properly wrap the wrapper tightly about
tensions lever 38 forwardly so that its cam follower roller
the mandrel for the proper formation and sealing of the
105 will bear against the cam surface 30.
The forward and reverse movement 'of the ram 16
is effected by the forward and rear movement of the
lever 39 about the shaft 36. The upper end of the lever
39 is formed with a yoke 106. This yoke 106 engages
wrapper as a tube, and to properly position a skein within
65 the mandrel for a time interval, the end of the mandrel
through which the skein was originally introduced must
be closed. For this purpose a gate assembly illustrated
generally at 112 is positioned immediately adjacent the
IIn this ar
open end of the mandrel. This gate comprises a pair of
rangement the upper ends of the legs forming the yoke 70 parallel
vertical channels 113 and 114 adapted to sup
106 are connected by connecting rods 107 to a sleeve
port for sliding vertical movement gate 115. This gate
the sides of the ram as illustrated at 107’.
103.
The sleeve 108 extends aroundl and frictionally
engages the ram 16.
The sleeve 108 may be formed of
115 is designed to close the outer end of the mandrel
in its down position and open it in its up position. The
mandrel is outwardly flaredl as illustrated at 116. The
several arcuate sectors adjustably screwed together. The
sleeve will move itin a forward or reverse directionand 75. upper end of the gate 115 has a pair of parallel rings.
3,078,625
8
117 and 115 between which the tongue 119v is pivotally
supported by suitable means. The tongue 139 has slots
12d formed in it adapted to receive a key 121. Such
key 12JL carried by the transport assembly 10 has a pin
5. In a wrapping machine the combination of means
forming a hollow mandrel adapted to receive internally
thereof a deformable product, means for feeding said
product into said mandrel, a wrapper transport assembly
122 adapted to engage the slot 121i` when the transport Ul and wrapper forming means for positioning a wrapper
in tubular form about said mandrel, and means for re
assembly is in its foremost position. The cam arrange
ment is such that the transport assembly moves down
wardly in its forward position. Thus in its forward dy
moving said product from said mandrel comprising re
ciprocally moveable means having means for engaging
and drawing said product from said mandrel on move
namic state the key on the transport will engage the gate
slot and move it downwardly therewith.
10 ment of said moveable means from said mandrel, means
for moving said moveable means reciprocally to and
What is claimed is:
from said mandrel, and finger means carried by said
1. In a wrapping machine the combination of means
forming an open ended hollow mandrel adapted to re
ceive internally through one end thereof a deformable
product having a finite length, a wrapper transport as
sembly and wrapper forming means for positioning and
forming a wrapper in tubular form having discretely
formed ends about said mandrel, reciprocal means for
drawing said product individually into said mandrel
moveable means adapted to engage said tubular wrapper
and draw it from said mandrel onto said product on
movement of said moveable means from said mandrel.
6. In a wrapping machine the combination of a hollow
open ended mandrel adapted to receive a deformable
product, reciprocal means adapted to move to and from
said mandrel and having means adapted on movement
and for subsequent individual removal of said product 20 from said mandrel to engage and draw said product
therefrom, means for reciprocating said reciprocal means,
from said mandrel, and means operatively associated with
and means associated with said reciprocal means for slid
said lmt mentioned means for sliding said formed wrapper
ing a tubularly formed wrapper positioned about said
off said mandrel onto said- product after said product is'
mandrel onto said product drawn from said mandrel.
at least partially withdrawn from said mandrel.
forming a hollow mandrel adapted to“ receive internally
7. In a labeling machine the combination of a hollow
open ended mandrel adapted to receive a deformable
thereof a deformable' product, a wrapper transport as
product, a ram reciprocally moveable to and from an
sembly and wrapper forming means' for positioning and
open end of said mandrel and having product engaging
2. In a wrapping machine the combination of means
means adapted to draw said product from said mandrel
on movement therefrom and finger means carried by said
a ram, means mounting said ram for reciprocal move
ram adapted to engage a tubularly formed wrapper po
ment in longitudinal alignment with said mandrel, means
sitioned about said mandrel and slide it therefrom onto
associated with said ram for drawing said products in
said product drawn from said mandrel on movement
dividually and successively into said mandrel in a se
of said ram from said mandrel.
lected location of said movement of said ram, means
8. In a labeling machine the combination of a hollow
associated with said ram for drawing said product from 35
open ended mandrel adapted to receive a deformable
said mandrel at a second location of said movement of
product and support a tubularly formed wrapper about
said ram, and means associated with said ram for slid
its outer surface, a ram reciprocally moveable to and
ing said tubularly formed wrapper onto said removed
from an open end of said mandrel and having product
product.
engaging means adapted to draw said product from said
3. In a wrapping machine the combination of means '
mandrel on movement therefrom, means for reciprocally
forming a hollow mandrel adapted to receive internally
moving said ram to and from a position adjacent one
thereof a deformable product, a wrapper transport as
end of said mandrel, finger means mounted on said
sembly and wrapper forming means for positioning and
ram, means urging said finger means toward engagement
forming a wrapper in tubular form about said mandrel,
forming a wrapper in tubular form about said mandrel,
a tubular ram, means mounting said ram for reciprocal
with said mandrel when said ram and mandrel are ad
movement in longitudinal alignment with said mandrel,
jacent whereby said flnger means will frictionally en
gage said tubularly formed wrapper positioned about said
mandrel and slide it therefrom onto said product drawn
suction means associated with said ram for creating air
suction through said ram and mandrel whereby said
products may be drawn individually and successively into
said mandrel through one end when said ram is adjacent „
the other end of said mandrel, means for reciprocating
from said mandrel on movement of said ram from said
mandrel.
9. A device as set forth in claim 7, wherein said finger
means comprise a plurality of parallelly arranged elon
said ram to and from said adjacent position, means for
gated fingers, means pivotally engaging and supporting
drawing said product from said mandrel at a second po
said fingers at one end on said ram with the other ends
sition of said ram and means for positioning said tubularlyV
formed wrapper over said removed product.
55 of said fingers projecting beyond an end of said ram,
means for maintaining said fingers spread apart when said
4. In a wrapping machine the combination of means
fingers are positioned over said mandrel and means for
forming a hollow mandrel adapted to receive internally
tensioning said fingers toward each other as said ram
thereof a deformable product, a wrapper transport as
moves from said mandrel whereby said fingers may fric
sembly and wrapper forming means for positioning and
forming a wrapper in tubular form about said mandrel, 60 tionally engage said tubularly formed wrapper positioned
a tubular ram, means mounting said ram for reciprocal
movement in longitudinal alignment with said mandrel,
means comprising an air pressure system operatively
connected to said ram for alternately creating a blow
on said mandrel.
l0. A device as set forth in claim 9 wherein said ram
is formed as an elongated tubular member having a.
narrowed section at the end closest said mandrel, means
pressure or suction at the forward end of said ram, 65 for moving said ram in longitudinal alignment to and
from said mandrel, said means pivotally engaging and
means for reciprocation of said ram to and from a po
supporting said fingers comprising a sleeve longitudinally
sition wherein said forward end engages an open end
slidably mounted on said ram and adapted on sliding
of said mandrel, means including a control means for
sequentially operating said air pressure system whereby
to longitudinally move said fingers relative to said ram,
an individual product will be drawn into said mandrel 70 means mounted on said fingers remote from said pivoted
end maintaining said fingers spread apart as said fingers
when said forward end of said ram engages said mandrel
move relative to said ram until said last mentioned means
and said ram draws said product from said mandrel as
engage said narrowed section whereupon said fingers
said ram is moved away from said mandrel, and means
move toward each other.
for positioning said tubularly formed wrapper over said
75. 11.,Ay device asset forth in claim 9, wherein said ram*
removed product.
3,078,626
is formed as an elongate-d tubular member having a
narrowed section at the end closest said mandrel, means
for moving said ram in longitudinal alignment to and
from said mandrel, said means pivotally engaging and
supporting said fingers comprising a sleeve longitudinally
17. In a wrapping machine the combination of a hollow
tubular mandrel having open ends and a plurality of
air holes through the wall thereof, means for intermittent
closure of said ends, means for application of air suction
in said mandrel when said ends are closed, and means
slidably mounted on Said ram and adapted on sliding to
longitudinally move said fingers relative to said ram,
for appiying a wrapper about said mandrel and over said
holes whereby said wrapper will be held on said mandrel
spring means tensioning said fingers toward one another,
bearings secured to and supporting said fingers at posi
tions remote from said pivoted ends, said bearings adapted
to securely bear against the longitudinal surface of said
by said air suction.
18. In a wrapping machine the combination of a hollow
tubular mandrel having open ends and a plurality of air
holes through the wall thereof, means for intermittent
closure of one of said ends, means for application of air
suction at the other of said ends, and means for placing
a wrapper about said mandrel over said air holes whereby
said wrapper will be secured on said mandrel by said
air suction.
ram and said narrowed sectio-n as said fingers move,
whereby said fingers will remain apart at a uniform
distance until _said bearings engage said narrowed section
whereupon said fingers will move toward one another.
12. In a labeling machine’ the combination of a hollow
open ended mandrel adapted to receive a deformable
product, a «ram reciprocally moveable to and from an
19. A device as set forth in claim 17 wherein said
means for applying a wrapper includes means for inter1
open end of said mandrel and having product engaging
engaging opposite ends of said wrapper when said
means adapted to draw said product from said mandrel 20 wrapper has been positioned on said mandrel thereby
on movement therefrom, label'engaging meansl compris
forming >said Wrapper as a tube about said mandrel.
ing a plurality of elongated-fingers, a sleeve member
>2O. lA device as set forth in claim 18 having a chute
slidably engaging said rarn- an-d „pivotally mounting said
aligned with said one end adapted to support in series a
fingers, means for reciprocally moving said sleeve mem
plurality of deformable products for successive feeding
berV with respect to said ram, and means for selectively 25 through said one end into said mandrel.
varying the spacing between said fingers at distances
21. A device as set forth in claim 17 wherein said
remote from said pivoted mounting at different positions
mandrel is horizontally disposed and said means for
of said reciprocal movement of said sleeve with respect
applying a wrapper includes label transport means for
to said ram.
positioning a wrapper immediately above said mandrel
13. A ~device as set forth in claim l2, wherein said
with ends of said wrapper on opposite sides of said
means for varying the spacing between said fingers corn
mandrel, and means for subsequent interengaging said
prise bearings secured »to andsupporting said fingers, said
ends of said wrapper about said mandrel whereby said
bearings adapted to bear against the surface of said ram,
wrapper is tubularly formed.
said ram having surfaces over which each of said bear
22. A device as set forth in claim 21 wherein said
ings move at uniform distances apart, said ram also 35 means for subsequent interengagement of said wrapper
having'a narrowed section adjacent the ends of said
ends includes a pressure bar and means for pressing said
bar against said mandrel whereby wrappers having over
lapping ends on said mandrel coated with adhesive will
be sealed together.
surfaces and'over which said bearings also move, and
spring means tensioning said fingers together whereby
said fingers will move together from a selected distance
apart when said bearings engage said narrowed section.
40.
14. In a Wrapping machine the combination of a
tubular open ended' mandrel adapted to successively re
ceive deformable products, and means including an air
23. A device as set forth in claim 18 wh-erein said
means for intermittent closure of said one end comprises
a gate, means slidably supporting said gate for move
ment to and from a position across said one end, and
pressure system adapted to successively d_raw one of said
products adjacent one end of said mandrel sequentially
means for sliding said gate in synchronism with said
of said mandrel comprising a rigid air tube, means for
moving said mandrel and air tube to and away from a
cally moves from a rearward wrapper engaging position
means for placing a wrapper about said mandrel.
into and then after a time interval, out of said mandrel,
24. In a wrapping machine the combination of first
comprising means for applying anair suction force at
and second wrapper support means in spaced relation, a
the open end of said mandrel and means for closing said
wrapper transport assembly having _first and second spaced
one end of said mandrel for a selected intermediate period
vupper engaging means for simultaneous engagement of
during application-of said suction force at the other end
50 Wrappers respectively positioned on said first and sec
of said mandrel.
ond support means, means for reciprocal forward and
15. In a wrapping machine the Combination of a tubu
rearward movement of said transport assembly, whereby
lar open ended mandrel adapted to successively receive
said first engaging means reciprocally moves from a rear
deformable products and means for drawing one of said
ward wrapper engaging position at said first support means
products adjacent one end of said mandrel sequentially
to a forward Wrapper release position at said second
into and then after a time interval out of the other end
support means and said second engaging means recipro
position with said air tube aligned and adjacent said
at said second support means to a forward wrapper re
lease position, and means for releasing said wrapper en
other end, means for closing said one end of said mandrel
gaging means at said forward wrapper release positions.
60
during said time interval, and means for effecting air
25. IIn a device as set forth in claim 24 having an
suction through said tube.
16. In a wrapping machine the combination of a tubu
lar open ended mandrel adapted to successively receive
deformable products and means for drawing one of said
products adjacent one end of said mandrel sequentially 65
adhesive applicator intermediate said first and second
support, means for applying adhesive to said wrappers
-as said wrappers are moved from said first to said second
support means.
26. A device as set forth in clai-m 24 wherein said
into and then after a time interval out of the other end
of said mandrel comprising a rigid air tube, means mount
transport assembly includes Vertical leg means, a carriage
ing said air tube in longitudinal alignment with said
supporting said carriage, and means for reciprocally mov
supporting said legs, horizontally disposed rails slidably
mandrel for relative movement to and away from said
70 ing said carriage.
other end, means for moving said air tube to and from
27. A device as set forth in claim 24 with said trans
an aligned adjacent position with respect to said other
port assembly having vertical leg means, sleeves support
end, and means for drawing air through said air tube
ing said leg means for vertical movement, a carriage
and means for closing said one end of said mandrel
supporting said sleeves, horizontally disposed rails sup
during said time interval.
porting said carriage for horizontal slidable movement,
3,078,626
11
drel comprises a gate, means slidably supporting said
means for vertically moving said leg means in said sleeves
`and means for horizontally moving said carriage.
28. A wrapping machine for wrapping a deformable
product with a tubular wrapper comprising a hollow tubu
lar open ended mandrel having holes in the walls thereof
adapted to receive said product and support said wrapper,
gate for movement to and from `a position across said one
end of said mandrel, and means carried by said wrapper
transport assembly for synchronous sliding operation of
said gate.
32. A device as set forth in claim 28, wherein said
means for synchronous operation of each of said means
comprises a shaft having a plurality of cams mounted
thereon, means for rotating said shaft, a plurality of cam
ciprocal longitudinal aligned movement of said tubular
member to and from one end of said mandrel, means for 150 follower levers interengaging said cams, means support
ing said levers, and means operatively interconnecting a
sucking air through said tubular member, means for po
different one of said levers with control means for said
sitioning wrappers over said mandrel, means for feeding
air sucking means, said means for reciprocally moving
said products into the other end of said mandrel, means
a ram having an elongated tubular member for passage
of air therethrough, means supporting said ram for re
for selectively closing said other end of said mandrel,
said tubular member, and said means for positioning
means for reciprocally moving said tubular member to
and from said one end of said mandrel, means for en
wrappers over said mandrel.
33. In a method of forming a wrapper into tubular
gaging and slidably removing a tubularly formed wrapper
on said mandrel, and means for synchronously operating
uct the steps of positioning aI wrapper over a tubular
shape for subsequent wrapping about a deformable prod
each of said means whereby a product is fed into said
mandrel having a plurality of perforations in the wall
tubular wrapper and thereafter said product is withdrawn
causing air to ilow into said mandrel through said perforations, said wrapper being wrapper about said mandrel by
the reduced-pressure about said mandrel caused by s'aid
flow.
34. A method of individually wrapping deformable
mandrel, a wrapper is formed about said ymandrel as a 20 thereof and creating a vacuum in said mandrel and thereby
from said one end of said mandrel and said wrapper is
slid from said mandrel onto said product.
29. A device as set forth in claim 28 wherein said
means for engaging and slidably removing a tubularly
products comprising the stepsv of positioning a wrapper
formed wrapper on said mandrel comprises a sleeve slid
ably positioned on said tubular member for movement
over a tubular mandrel having a plurality of perforations
in- the wall thereof, creating a vacuum in said mandrel
therewith and further movement in longitudinal relation
thereto, fingers pivotally supported on said sleeve and
projecting beyond the end of said tubular member toward
said mandrel, and means for selectively spreading and
and thereby causing air to flow into said mandrel through
said perforations, said wrapper being wrapper about said
mandrel by the reduced pressure about said mandrel
caused by said How, dimensionally confining said prod
closing said ñngers.
uct within said mandrel and then ejecting said product
from said mandrel and substantially simultaneously slid~
prises first and second wrapper support means in spaced 35 ing said wrapper over said product.
35. A method as set forth in claim 33 wherein said
relation, a wrapper transport assembly having first and
wrapper is‘ positioned non-symmetrically over said man~
second spaced upper engaging means for simultaneous
drel whereby one end of said wrapper will be drawnengagement of Wrappers respectively positioned on said
tightly over said perforations before the other end of
first and second support means, means for reciprocal for
ward and rearward movement of said transport assembly, 40 said wrapper and then sealing said ends together.
whereby said first engaging means reciprocally moves
References Cited in the tile of this patent
from a rearward wrapper engaging position at said first
UNITED STATES PATENTS
support means to a forward wrapper release position at
said second support means and said second engaging
Rober ______________ -_ Sept. 20, 1927
45 1,642,894
30. A device as set forth in claim -29 wherein said
means for positioning wrappers over said mandrel corn
means reciprocally moves from a rearward wrapper en
gaging position at said second support means to a forward
wrapper release position, and means for releasing said
wrapper engaging means 4at said forward wrapper release
positions.
3l. A device as set forth in claim 30 wherein said
means for selectively closing said other end of said man
50
1,986,422
2,057,121
Zwoyer _______________ __ Ian. 1, 19.35
Trevellyan ___________ __ Oct. 13, 1936
2,113,636
2,685,770
2,737,000
Zogt ________________ __- Apr. 12, 1938
Conti _______________ __ Aug. 10, 1954
McCargar _____________ _- Mar.v 6, 1956
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