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Патент USA US3051582

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Aug. 28, 1962
3,051,581
E. BONAMI
METHOD AND APPARATUS FOR PACKAGING FOOD
Filed Jan. 2, 1959
4 Sheets-Sheet 1
4-4 Z2
EFPNEST BONAMJENTOR
B’ MW
Aug- 28, 1962
E. BONAMI
3,051,581
METHOD AND APPARATUS FOR PACKAGING FOOD
Filed Jan. 2, 1959
F/
4 Sheets-Sheet 2
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65’
6 EQNEST @vgg?yl
BY MW
A TTOHNE'Y
Aug- 28, 1952
E. BONAMI
3,051,581
METHOD AND APPARATUS FOR PACKAGING FOOD
Filed Jan. 2, 1959
4 Sheets-Sheet 3
62
‘uh. 4Q "HIL
52
44
0
2,4
F15
I
52184185
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86
159 142.1
68
5O
EQNEST 50mm
IN VEN TOR.
BY mw
Aug. 28, 1962
3,051,581
E. BONAMI
METHOD AND APPARATUS FOR PACKAGING FOOD
Filed Jan. 2, 1959
4 Sheets-Sheet 4
EQNEST BONAMI
INVENTOR.
‘
ATTORNEY’ ,
United States Patent 0 ”"1C6
,
3,®5l,581
Patented Aug. 28, 1962
2
1
accurately placing a succession of shingled groups of
bacon slices on -a series of dividers.
3,051,581
METHOD AND APPARATUS FUR PACKAGING
-
F001)
.
Ernest Bonami, Chicago, 111., assignor to Swift 8: Com
pany, Chicago, 111., a corporation of Illinois
Filed Jan. 2, 1959, Ser. No. 784,680
12 Claims. (Cl. 99-171)
A further object of the present invention is to provide
an improved method and apparatus for continuously and
accurately enclosing successive groups of shingled bacon
slices evenly within the edges of a series of dividers.
Other objects and advantages will become apparent
from the following description taken in conjunction with
the ‘drawings, in which:
The present invention relates to a method and ap
FIGURE 1 is an elevation view of one embodiment
paratus for accurately placing units of product on a sheet 10
of the improved apparatus showing a movable take away
of divider material. More speci?cally the invention is
conveyor and divider card positioning assembly;
directed to a method and apparatus for delivering groups
FIGURE 2 is a plan view of the apparatus of FIGURE
of shing-lcd slices of meat, such as bacon, directly and
1 with the divider card magazines removed;
accurately to the paperboard divider cards used in packag
FIGURE 3 is a sectional view taken at line 3——3 in
15
ing the meat.
FIGURE 2;
Various types of bacon slicing and shingling machines
FIGURE 4 is an elevation view of a second embodi
are in use today. Many of these machines incorporate
ment of the improved apparatus showing a movable feed
apparatus for dividing the shingled slices into groups on
conveyor assembly;
a conveyor. I have previously devised a method and ap
FIGURE 5 is a plan view of the apparatus of FIG—
paratus for automatically advancing such groups along a 20
URE 4;
conveyor, placing each unit on a separate divider, and
FIGURE 6 is a sectional view taken at line 6—6 in
folding the divider to enclose the product. An embodi
FIGURE 5; and
ment of that apparatus is illustrated and described in
FIGURE 7 is a simpli?ed wiring diagram for the de
my copending US. patent application S.N. 629,531, ?led
December 20, 1956, now Patent No. 2,907,152, the dis 25 tection and control circuits found in both embodiments
of the device.
closure of which is incorporated herein by reference.
The method of the present invention comprises taking
The present invention is an improvement in the method
the groups of shingled slices and moving the groups in
and apparatus of the aforementioned copending applica
spaced relationship in a given direction generally along
tion.
I have found that as the groups of slices are formed
and moved along a conveying means, both sides of each
succeeding group are not always in line with the sides of
preceding groups. That is, While all groups are carried
in the same direction by the conveying means they may
and do occupy a range of positions lateral to the center
a path toward a particular loading or terminal point.
The divider cards on which the groups are to be placed
are sequentially positioned at the terminal point with one
portion of the divider extending rearwardly from the
terminal point, that is generally in the reverse of the direc
35 tion of movement of the groups, and below the path
traveled by the groups. The remaining portion of the
line of the conveying means. This situation is due pri
divider extends forwardly of this terminal point, and pref
marily to the variation in width ‘of the bacon bellies that
erably extends upwardly above the level of the path of
are sliced. When slicing, one edge of each belly is held
travel of the groups. During the movement of the groups
against a guide as it is forced into the path of a blade.
Thus, in general, one end of every succeeding slice will 40 toward the dividers any deviation of the next group ap
proaching the terminal point, laterally of the positioned
be in line regardless of the width of the belly. However,
divider, is registered; and either the terminal point or the
the opposite ends will not be in alignment where the
given direction of motion is adjusted to bring the side
width of succeeding bellies varies. Furthermore the ap
of the group in line with a point just inside the corre
paratus for grouping the slices into drafts usually involves
a system of conveyors operating at ditferent speeds. The 45 sponding edge of the divider. Then as that group ap
proaches the terminal point, and commences to move past
action of this equipment often whips the groups of slices
that point, the divider is moved in the same direction at
to one or the other side of the conveyors resulting in
substantially the same rate of speed, with the group being
further non-alignment of the sides of succeeding groups.
deposited on the divider as each moves along. The for
However, in the apparatus of my copending application
ward portion of the ‘divider is then folded back over the
each divider card is positioned at the same point with
group that has been deposited on the divider. As soon
respect to the group feed conveyor. This situation is
as one divider has moved away from the terminal point a
undesirable in that it is necessary to subsequently properly
new divider is positioned at that point. Preferably this
align the product within the ‘folded divider after it leaves
is done by moving the divider along a course transverse
the packaging equipment.
55 to the path of travel of the groups.
Should the product be left unaligned with a side there
The basic features of the present invention are sub
of extending beyond the edge of a divider, it will be readily
stantially the same as found in the apparatus described
apparent that further packaging operations, where re
in my aforementioned copending application. With refer
quired, or other handling of the package may damage the
ence to the apparatus, a succession of groups of shingled
product ‘and render it unsalable. In any instance, if
slices 10 are carried along a group feed conveyor 12, con
the product is not evenly positioned on the divider the
sisting of ‘a plurality of ribbons 14 trained about a pair
resultant package will be unattractive with a consequent
of pulley shafts 16 and 18 which are journaled in a sub
adverse e?ect on the salability of such items.
frame 20. The groups are intended to drop oil the end
Therefore, it is a primary object of the present invention
to provide an improved method and apparatus for ac 65 of conveyor 12 at pulley 16 onto a divider card 22 held
therebeneath ‘on a horizontally reciprocable table 24. The
curately placing a quantity of product on a divider card.
divider card is a transversely scored paperboard blank
Another object of the present invention is to provide
having a bottom face 26 and a top face 28. Preferably
an improved method and apparatus for accurately posi
the bottom face 26 is disposed beneath the feed con
tioning and enclosing a quantity of product within a
veyor 12 to receive the groups 10, and the top face 28
divider member.
70 extends forwardly and slightly upward from that point.
Still another object of the present invention is to pro
The divider card 22 is held in this position by some
vide a novel method and apparatus for continuously and
3,051,581
AA
76 and move the subframe 38 in the proper direction
to line up the divider 22 with the approaching group Of
slices 10.
convenient means on the reciprocable table 24 at one
of a pair of cutout portions 30 thereon. When the slices
begin to fall on the bottom face 26 the card 22 will be
partially lifted and carried forward beneath means to at
least partially fold the top face 28 across the product, at
substantially the same speed of movement as conveyor
12, by a takeaway conveyor 32.
The electric circuitry of the detection unit generally
66 will be later explained. However, for purposes of the
present discussion it is su?icient to note that the control
system includes three photoelectric cells 82, 84 and 86.
Conveyor 32 is also
‘made up of a plurality of ribbons 34 which are trained
Cells 82 and 84 are mounted in a single housing 88 se
about a ?rst pulley shaft 36 journaled in a subframe 38
cured to a bracket 90 on the movable subframe 38. The
and a second pulley shaft 40 which is journaled in a pair 10 tandem cells 82 and 84 are located above and substantially
of arms 42 pivotably mounted within the subframe 38.
transversely of the conveyor 12 adjacent a side thereof.
Secured to subframe 38 directly beneath the housing 88
and conveyor 12 is a lamp 92 for illuminating cells 82, 84.
Normally, photocells 82, 84 will be positioned to straddle
The pivotable arms 42 are magnetically actuated to move
the conveyor 32 upwardly toward the cutout portion 30
of table 24 and into cont-act with the divider card 22 as
the slices begin to fall from the feed conveyor 12.
15 a line extending from one edge of a divider card 22, or
A divider feed means generally 44 comprises a pair
a line inwardly and parallel thereto.
of card magazines 46, 48 connected to the subframe 38
The third photocell 86 may be connected to either the
above each side of the takeaway conveyor 32. A pair
stationary subframe 20 or the movable subframe 38.
of vertically reciprocable vacuum withdrawing members
Preferably cell 86 is mounted on the subframe 20 that
50, 52 operate beneath the magazines 46, 48, respectively, 20 supports conveyor 12. It should be located above the
alternating to withdraw a divider card 22 therefrom and
conveyor; and a corresponding lamp 34 below the con
place it above the corresponding cutout portion 30 of
veyor. In the preferred arrangement photocell 86 and
table 24. The table then reciprocates to properly posi
lamp 94 should be located so that the beam from the
tion the card with respect to the takeaway conveyor 32.
lamp passes between two of the ribbons 14 of conveyor 12.
Both conveyors 12 and 32 may be continuously op 25
In operation, as a group of sliced material is moved
erated by electric motors 54, 56, respectively, secured
along conveyor 12 toward a divider 22 positioned below
to the corresponding subframes 20, 38. Furthermore, the
the end thereof on the reciprocable table 24, the group
reciprocating parts including the table 24 and the vacuum
will pass between lamp 94 and photoelectric cell 86 caus
withdrawing members 50, 52, are actuated by suitable
ing the detection unit generally 66 to be energized. At the
pneumatic means connected to a source of air pressure 30 same time the group of product will normally intercept
through a series of valves (not shown). The valves, in
at least part of the beam between lamp 92 and photo
electric cells 82, 84. If the product is properly lined up
turn, are actuated by a suitable timing means such as that
described in my copending application, or a suitable
with the waiting divider 22, the inwardly disposed light
commercially available cam driven timer. A trip switch
62, hung between the magazines 46, 48 contactable by
cell 84 will be shadowed and the outward photocell 82
In this condition
voltage ‘will not be placed on electric motor 80' and the
subframe 38 will retain its position. However, should
35 will be exposed to the light beam.
groups of slices 10 advancing to the end of conveyor 12,
is connected to actuate the magnetically operated pivotable
arms 42 and the timing means. Finally, both subframes
the ends of product be inwardly of both light cells 82,
20 and 38 are supported on a main frame 64.
84 exposing both to the beam from lamp 92, the motor
The present improvement in the apparatus comprises 40 80 will be energized to turn feed screw 76 in a direction
a photoelectric detection'uuit generally 66, arranged near
causing the subframe 38 to move forward (to the right
the end of feed conveyor 12 and connected to a suitable
as viewed in FIGURE 3). When movement of the sub
power means generally 68, which is secured to the main
frame 38 has brought the divider 22 and group 10 in line,
frame 64 and suitably connected to move, in a direction
photocell 84 will be shadowed while cell 82 will be ex
transverse to the motion of conveyors \12 and 32, one of 45 posed to the beam from lamp 92 and the voltage will be
the subframes 20 or 38.
removed from motor 80 and the movement will stop.
With speci?c reference to the drawings, FIGURES 1, 2,
Should the position of an approaching group of slices
and 3 illustrate an embodiment of my improved inven
110 be too far to the left (as viewed in FIGURE 3) both
tion wherein the subframe 38 and the components (in
photocells 82 and 84 will be shadowed and the control
cluding the trip switch 62, takeaway conveyor 32 and 50 circuit will cause a reversed voltage to be applied to motor
the divider feed means 44) mounted thereon are mov
80 causing it to operate in the reverse direction and turn
able in a direction generally at right angles to the feed
feed screw 76 to move the subframe 38 in the correspond
conveyor 12. Subframe 38 is supported on two pairs of
ing direction (to the left as seen in FIGURE 3).
casters 70 that are con?ned to movement along a pair
, A second embodiment of the improved apparatus em
of grooved tracks 72 secured to the frame 64. A pair 55 ploys essentially the same detection unit and operative ele
of captive nuts 74 are fastened to the underside of sub
ments as found in the preceding embodiment. Similar
frame 38 about midway between the two pairs of casters
parts in the second embodiment will be noted by like ref
70. Nuts 74 are suitably threaded to receive a power
erence characters bearing an accent mark. As may be
feed screw 76 therethrough. The feed screw 76 extends
seen in FIGURES 4-6, however, in the second embodi
.through a thrust bearing 78 and is’ connected directly
ment the takeaway conveyor 32' and subframe 38’ are
_to the armature of a reversible electric motor 80. It will
held stationary while the feed conveyor 12' and subframe
have become apparent that by applying the proper voltage
20’ are movable Ilateradly. The ribbons 14' of the con
,to the electric motor 80, subframe 38, and the components
veyor '12’ extend across a relatively long run, as compared
with the ?rst embodiment, and are supported at intermedi
.mounted thereon can be quickly moved in either direction
65 ate points by idler rollers 96. Pulley shaft 16' of con
.lateral to the feed conveyor 12.
veyor 12’ is journaled in the movable subframe 20'; and
The voltage placed on motor 80 is controlled by 'a
photoelectric detection unit generally 66 which is located
near the end of feed conveyor 12. The detection unit
was devised to register the position of a group of slices
‘10 approaching the end of conveyor 12 relative to an
edge of the normal position of a divider card 22. Should
the group of slices register as being too far to one side
or the other of that edge (or a line parallel thereto) the
electric motor 80 will be energized to turn feed screw 75
the opposite pulley shaft 18' is journaled in a stationary
part of the frame.
A pair of bearings 78' are fastened to the
frame
64', and a reversible electric motor 80’ is also fastened
to this frame with its shaft in iine with the bearings 78'.
A power feed screw 76' is supported between the bearings
and connected directly to the shaft of the electric motor
80'. Two captive nuts 74' forming part of thersubframe
20' engage the threads on feed screw 76' so that the screw
3,051,5si
.
6
5
and bearings 78’ both support subframe 20' and move it
to either side inraccordance with the voltage applied to
the motor 80'. However, the direction in which the sub
frame 20' must be moved in response to the position of
a group of ‘slices 10 with respect to the photocells 82', 84'
is opposite to that of the ?rst embodiment. For instance,
in the ?rst embodiment where the group 10 allows light
to strike both cells 82 and 84 the subfrarne 38 was moved
to the right (as seen in FIGURE 3), while in the second
embodiment, to correct the same situation, subframe 20’
must be moved to the left (as seen in FIGURE 6).
‘The physical structure of the detection unit generally
66' is essentially the same as in the previous embodiment.
126 in contact with a blank pole‘. Minimum current will
allow the switch to make contact with a pole connecting
(‘under the previously noted conditions) a relay 1312 ‘across
the DC power supply.
When either relay 130 or 132 is connected to the DC.
power supply, a third relay 134 will also be connected
thereto through one of a pair of selenium recti?ers 136.
‘In this system the recti?ers 136 act to pass current in
only one direction. Thus current will pass to the coil of
10 relay 134 from the line to an energized coil 130 or 132;
but current will be blocked from passing on to the non
energized coil.
The switches of relays 130, 132, and 134 are all normal
ly open. One side of the ‘120 Volt AC. power supply is
Cells 82’ and 84’ are secured above conveyor 12' to a
bracket 90' which is ?xed to the now stationary subframe 15 connected to the switch of relay 134. That switch in turn
38’. A lamp 92' is attached to subfrarne 38’ beneath the
conveyor in line with the photocell housing 88’. The
third photocell 86’ and its corresponding lamp 94' may
is connected through the switch of relay 130 to the for
The switch of
relay 134 is also connected, through the switch of relay
ward power terminal of the motor 80.
132, to the reverse power terminal of motor 80. A direct
be attached to the movable subframe 20 so that the light
beam from lamp 94' will always pass between two ad 20 connection is also provided between motor 80 and the
other side of the 120 Volt AC. power supply. Thus
jacent ribbons 14’ of the ‘group feed conveyor '12’.
when a group of slices 10 passes between the photocells
Referring to FIGURE 7, a simpli?ed wiring diagram
and their respective lamps, cell 86 will be shadowed, de
for the detection and control unit generally 66 may be
energizing relay 122, and thus connecting the switch of
seen. The electrical circuit forms no part of my invention
and is given merely to completely describe a working em 25 relay 126 to the DC. power supply. Concurrently the
lighted or shadowed condition of cells 82, 84 will establish
bodiment thereof. A primary coil of a transformer gen—
a current in the coil of relay 126 causing the switch there
erally :100 is connected across a ‘120 volt AC. power
of to connect (if any) the coils of either of relays 130 or
‘132 and the coil of relay 134 to the D.C. power. The
energized lamps 92 and 94 which are connected thereto 30 affected relay switches will close to connect the AC.
power and the ‘motor 30 to operate it in the forward or
in parallel. Winding 104 provides half wave recti?cation
reverse direction as previously described. A pair of limit
of the current passing to the photocells ‘and control circuit
switches '138, 140 may be placed at either side of the
through a pair of selenium recti?ers 106 connected to
‘stationary main frame ‘64 in the path of movable sub
the end terminals of the winding. The recti?ers 106 in
supply. The transformer has two secondary windings
102 and 104. Winding 162 is connected to continuously
turn are connected to a common terminal 108 which, 35 frame 20 or 38 to insure that the AC. power to motor
when taken with a center tap terminal 110 on winding 104,
‘8% will be interrupted when the subframe has moved
provides substantially D.C. power.
to its furthest limit.
Connected to terminals 108, 110 is a ?lter circuit, gener
ally 112, including a gas ?lled voltage regulator tube 114
The foregoing detailed description is only for clearness
of understanding and for the purpose of complying with
which operates to provide a constant voltage to a ?xed 40 35 U.S.C. 112, and I do not desire to be limited to the
exact details of construction shown and described for obvi
resistance 116 and a pair of variable resistances 1‘18 and
ous modi?cations ‘will occur to a person skilled in the 'art.
120. One side of photocell 86 is connected to the ?xed
resistance 116. Also one side of each of photocells 82
I claim:
1. A method for accurately depositing non-aligned
and 84 is connected to the variable resistances 118 and
120 respectively. In this manner, a fraction of the volt 45 groups of food product on divider cards comprising the
steps of sequentially positioning divider cards at a given
age in the ?lter circuit 112 will be impressed on one side
of the photocells. The other side of cell 86 is connected
location; moving a plurality of serially spaced non-aligned
to one end ‘of the coil of a relay 122, the other end of
which isconnected to a buss 124 return to the terminal
groups of food product along a path generally toward
said location; registering the relative lateral position of a
110 of the D.C. power supply.
Photocels 82 and 84, in 50 side of each group successively as it approaches said lo
turn, are connected in parallel to one end of the coil of
a three-way relay switch 126 by wire 128. The other
end of the coil of relay 126 is also connected to the buss
124. The common pole of relay 126 is connected in se
cation on said path with respect to an edge of a divider
exposed to ‘light, relay 122 will be energized and DC.
2. A method for accurately depositing non-aligned
card at said location; moving one of said path and said
location laterally with respect to the other in response
to the relative positions to bring said group and said
ries through the switch of relay 122 to the terminal 108 55 divider card into proper lateral alignment; and moving
said divider card with said group of product from said
of the DC. power supply.
location as said product is deposited thereon.
At this point it may be seen that so long as lamp 86 is
groups of food product on divider cards comprising the
power will not be directed to the switch of relay 126.
The coil of relay 126, however, may be exposed to a 60 steps of sequentially positioning divider cards at a given
location, moving a plurality of serially spaced non
range of currents depending upon the combination of
aligned groups of food product along a path in a given
photocells 82 and 84 energized and the settings of vari
direction generally toward said location; registering the
able resistances 118,‘ 120. A minimum current will al
relative lateral position of a side of each group succes
ways ?ow through the coil of relay 126 when neither of
the photocells 82 and 84 are exposed to light :from lamp 65 sively as it approaches said location on said path with
respect to an edge of a divider card at said location;
92.“ Medium current will flow when only one photocell
moving said location and said divider card laterally with
(cell 82) is lighted, and maximum current will ?ow when
respect to said group on said path in response to their
both photocells are exposed to light. Resistances 118 and
relative positions until said group and said divider card
120 may be adjusted so that these three ranges of current
are properly aligned; and moving said divider card with
supplied to the coil of relay 126 will be su?icient to move
said group of product generally in said given direction
the switch of relay 126 into contact with three separate
from said location as said product is deposited thereon.
poles. Maximum current will draw the switch to the
3. A method for accurately depositing non-?igned
fall down position connecting a relay 130 across the DC.
groups of food product on divider cards comprising the
power suply (when photocell 86 is dark and relay 122 is
closed). Medium current will place the switch of relay 75 steps of sequentially positioning divider cards at a given
8,051,581
'8
location; moving a plurality of jserially spaced non
7. A device for accurately depositing non-aligned
aligned groups of food product along a path in a given
groups of food product on divider cards comprising: a
direction generally toward said location; registering the
?rst frame; card holding means supported on said ?rst
frame; means to sequentially place cards on said holding
relative lateral position of a side of each group succes
sively as it approaches said location on said path with
respect to an edge of a divider card at said location; mov
ing said path and said group of product laterally with re
spect to said location and said divider in response to their
relative positions until said group and said divider
card are properly aligned; and moving said divider card
with said group of product generally in said given direc
tion from said location as said product is deposited
thereon.
'
means; a second frame; a conveyor for serially advanc
ing non-aligned groups of product to a point above said
card holding means, said conveyor being supported on
said second frame; a detection memberrcapable of reg
istering the location of a side of agroup of food product
on said conveyor, said detection member being secured
to said ?rst frame; means to move said ?rst frame lat
erally of said conveyor, said means being connected to
said detection member and controlled thereby to move
4. A device for accurately depositing non-aligned
said ?rst frame in a direction to bring a divider card into
groups of food product on divider cards comprising posi 15 alignment with said group of food product; and means to
tioning means for sequentially placing divider cards at a
remove the'divider card and group of food product from
prescribed location; conveying means trained to move the
said card holding means.
groups of food product serially along a path ending above
said location; said conveying means having a substantial
dimension lateral of said path across which succeeding
groups are positioned; detecting means positioned along
said conveying means to sense the presence of a group
of product thereon, said detecting means also being op
8. The device of claim 7 wherein the means to move
said ?rst >frame comprises a power feed screw, and a
motor connected thereto, wherein the threads thereof are
engaged by suitably threaded portions of said ?rst frame.
9. The device ofclaim 8 wherein the detection member
comprises a pair of photoelectric cells disposed generally
erative to register the relative position of a side of said
transversely of an edge of said endless conveyor, and a
group laterally with respect to an edge of said divider 25 source of light positioned opposite to said photoelectric
card; power means controlled by said detecting means to
cells whereby an edge of said group of product may par
cause one of said positioning means and said conveying
tially intercept the light from said source.
means to move with respect to the other to bring said
10. A device for accurately depositing non-aligned
divider card and said group into alignment; and means
groups of product on divider cards comprising: a ?rst
to remove said divider card from said location as a group 30
frame; card holding means supported on said ?rst frame;
of product is deposited thereon.
'
means to sequentially place cards on said holding means;
5. A device for accurately depositing non-aligned
a second frame; an endless conveyor for serially advanc
groups of food product on divider cards comprising posi
ing non~aligned groups of product to a point above said
tioning means for sequentially placing divider cards at
holding means, said conveyor being supported on
a given location; conveying means trained to move the 35 card
said second frame; a detection member capable of reg
groups of food product serially along a path ending above
istering the location of a side of a group of product on
said location, said conveying means having a substantial
said
conveyor, said detection member being secured to
dimension lateral of said path across which succeeding
said ?rst frame; means to move said second frame lat
groups are positioned; detecting means positioned along
erally of said ?rst frame, said means being connected to
said conveying means to sense the presence of a group of
said detection member and controlled thereby to move
product thereon, said detecting means also being opera
said second frame in a direction to bring said group of
tive to register the relative position of a side of said group
product-into alignment with a divider on said holding
laterally ‘with respect to an edge of said divider card;
means; and means to remove the divider card and group
power means controlled by said detecting means and con
nected to move said location and a divider card thereon 45 of product from said card holding means.
11. The device of claim 10 wherein the means to move
with respect to said conveying means to bring said card
and said group into alignment; and means to remove
said divider card from said location as a group of prod
said second frame comprises a power feed screw, and a
along said conveying means to sense the presence of a
References Cited in the/?le of this patent
motor connected thereto, wherein the threads thereof
are engaged by suitably threaded portions of said second
uct is deposited thereon.
6. A device for accurately depositing non-aligned 50 frame.
12. The device of claim 11 wherein the detection mem
groups of food product on divider cards comprising; posi
bre comprises a pair of photoelectric cells disposed gen
tioning means for sequentially placing divider cards at a
erally transversely of an edge of said endless conveyor,
given location; conveying means trained to move the
and a source of light positioned opposite said photo
groups of food product serially along a path ending
above said location, said conveying means having a sub 55 electric cells whereby an edge of said group of product
may partially intercept the light from said source.
stantial dimension lateral of said path across which suc
ceeding groups are positioned; detecting means positioned
group of product thereon, said detecting means also
UNITED STATES PATENTS
being operative to register the relative position of a side v60 2,259,502
Topham et a1 __________ __ Oct. 21, 1941
of said group laterally with respect to an edge of said
72,296,142
Campbell ________ __V___ Sept. 15, 1942
divider card; power means controlled by said detecting
2,452,376
Holstebroe et a1 ________ __ Oct. 26, 1948
means and connected to move said conveying means and
2,639,567
Murdock et a1 ________ __ May 26, 1953
said group thereon with respect to said location and said
2,717,729
Page et al ____________ __ Sept. 13, 1955
card to bring said card and said group into alignment;
2,813,798
Toby ________ _; _____ __ Nov. 19,1957
and means to remove said divider card from said location 65
as a group of product is deposited thereon,
2,877,014
Meyer ______________ __ Mar. 10, 1959
2,907,152
Hensgen et a1. ___,_______,‘___, Oct. 6, 1959
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