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Патент USA US3019586

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Feb. 6, 1962
3,019,576
L. J. SISLEY
BALER
Filed July 28, 1959
6 Sheets-Sheet 1
Ema ?‘
INVENTOR.
LESLIE J. SIsLEY
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Feb. 6, 1962
3,019,576
L. J. SISLEY
BALER
Filed July 28, 1959
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BALER
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BALER
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Patented Feb. a, teen
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provided the improved details of construction, the pre
3,919,576
ferred forms of which are illustrated in the accompany
BALER
ing drawings, wherein
Leslie J. Sisley, 415 Benny Way, Seattle, Wash.
Filed July 28, 1959, Ser. No. 830,l337
2 Claims. (Cl. 53-61)
FIG. 1 is a top or plan view of a machine embodying
the improvements of the present invention therein.
FIG. 1a is an enlarged cross-sectional detail taken on
line lrz-ia in FIG. 1.
This invention relates to machines which in the industry
to which they pertain are designated as “balers.” More
speci?cally stated, the present invention relates to a baler
whereby packages of like size may be assembled and
stulfed into an envelope or bag in a predetermined, orderly
and close ?tting manner to facilitate the handling, trans
ceiving side.
porting, protecting and storing of the packages.
the bag stuffing ram and cylinder.
To impart a better understanding of the present inven
tion, it will be here explained that whilethe present ma
of the machine on the line '4—~‘4 in FIG. 1, showing the
FIG. 2 is a side view of the machine of FIG. 1 as seen
from what will herein be referred to as the package re
FIG. 3 is a vertical section, taken longitudinally through
the machine on line 3—3 in FIG. I particularly showing
' FIG. 4 is a similar vertical section, taken transversely
chine is intended primarily‘ for the ‘ha-ling of packages
package grouping ram or plunger and its actuating cylin
which are enveloped and sealedin paper, cellophane, or
plastic bags, such as those in which hulled peas, beans,
der.
.
PEG. 5 is an enlarged plan view showing the principal
parts whereby incoming packages may be grouped pre
corn, meal, ?our and the like, they ‘may also be used quite
satisfactorily for baling canned goods, and square cornered 20 paratory to their being moved as a group into a bag.
REG. 6 is a similar view,_showing a group of packages
cardboard packages. Therefore, in the present instance,
as assembled and positioned for advancement into the bag
baling is not to be restricted to any speci?c packages but
by the action of the stuffing ram.
.
will generally be concerned with packages or bags of
FIG. 7 is an enlarged plan view illustrating several
“one pound,” “two pound” or “?ve pound” size.
The present invention resulted from the fact that it has 25 groups of packages after being advanced into a bag that
is clamped in open position on the receiving nozzle.
FIG. 8 is a vertical section of the bag clamping means
dling, storing and safer shipping of relatively small pack
as seen on line 8-8 in FIG. 2.
'
ages, to bale them in relatively large paper bags instead
FIG. 9 is a plan view of a part of the package con
of packing them for shipment in the well known corru
veying belt.
gated paper carton or wooden box, and it is for expedi
FIG. 10 is a side view of a section of the conveyor belt,
tiously effecting this baling operation that the present ,
been found advantageous and quite practical for the han
machine has been designed. .
shown partly as a section taken on line l0—ltl in FIG. 9.
In order to avoid possible confusion in terminology in
the following description, the large paper envelope or
container in which the relatively small parcels are baled
cylinder, particularly illustrating the solenoid valve control.
will herein be designated as a “bag” while each of the
parcels that are baled will be designated as a “package.”
It is the principal object of the present invention to pro
FIG. 11 is a longitudinal section view of the stuffing
P16. 12 is an enlarged sectional detail on line 12-42
in FIG. 3.
H6. 13 is a wiring diagram of the electrically operated
equipment of the machine. .
Brie?y described, the present machine comprises a
character stated, that is relatively simple in its construc 40 clamping means for holding a large paper bag horizon
tally in open position; a conveyor belt onto which pack
tion and mode of operation; that occupies a minimum of
ages to be baled are delivered in succession by a feed
?oor space; that is relatively inexpensive to manufacture
belt; a grouping cylinder that reciprocally actuates a ram
and to operate and which will operate to expeditiously
whereby the incoming packages, as advanced by the con
assemble and stuff the packages in a compact and orderly
vide a machine for the purpose above given and of the
manner in a relatively large paper bag.
Another object of the invention is to provide a machine
that will receive the designated packages in succession
from a feed belt and will convey andqassemble them in
groups of two or more, and then, as each group is formed,
will operate to advance it into the bag to form a layer,
and after a certain number of such groups have been
assembled and moved into the bag, will operate to com
veyor belt, are grouped and a stuf?ng cylinder and ram
that operates to, move the groups of packages, as formed,
into the bag, and ?nally releases the bag clamp and pushes
the ?lled bag from the machine.
Referring more in detail to the drawings: The present
machine as shown best in FIGS. 1 and 2, comprises a
base frame structure of hollow, box form, designated in its
entirety by reference numeral 10, equipped with a ?at,
pact the assembly and, with the ?nal step of the corn
horizontal top plate ii that is formed with a continuous
pacting operation, will release the bag holding clamp and
and circuitous slot 12 in which a continuous conveyor belt
the incoming packages are received on a conveyor belt
belt 13 follows a substantially triangular course.
55 ‘13 is mounted for guided travel; this belt being made
discharge the ?lled bag from the machine.
a
up of a succession of short, identical and pivotally joined
Yet another object of the invention is to provide a
links presently to be described in detail. The conveyor
package baling machine of the above character wherein
that is reversible in direction and is operable to move the
The conveyor belt, ‘13, as contained in the guiding slot
packages along. one path of travel if grouping is desired, 60 12, comprises a straight run, 13a, extending along the re
ceiving side of the machine; a straight run 13!) that con
and along another path if grouping is not desired.
Still another object of the invention is to provide a bal
ing machine of the character stated, and embodying the
features above mentioned, that operates automatically to
carry out the required operations in proper sequence and
‘with speed and accuracy.
'
tinues from the inner end of and at a right angle to the
straight run 13a; a circularly curved run 130 that con~
tinues from run 13b, and a straight run 13d, that continues
from run 13c into the outer or receiving end of run 13a,
thus to complete the belt circuit.
'
At the right hand end of the machine, as shown in
MG. 1, a succession of horizontal rollers 15 are mounted
Further objects and advantages reside in the details of
construction and combination of parts employed and in
in close parallel relationship/and onto these the pack
the mode of operation of the machine, as will hereinafter 70 ages, 16 which are to be baled, are received from a feed
be fully described.
‘
belt 17 for their direct delivery in succession onto the
In accomplishing the above mentioned’ objects, I have
conveyor belt 13 at the receiving end of its run 13a. As
3,019,576
3
the entering packages 16 move on to the conveyor belt
vduction gear mechanism 35x that is driven by a reversible
13, they are received between guide rods 18—l8 that
are supported in parallel relationship and somewhat
above the top plate ll-byl‘brackets 19 that are adjustably
fixed to said top plate !by bolts 20. The guide rods ’18—18
are co-extensive with the run 13a of the belt and operate
electric motor 36. The gear mechanism is ?xed'to the
motor, and the motor, in turn, is ?xed to the under side
to retain the packages 16_ in upright position thereon as
advanced to the discharge end of the run. All packages
16 are of the. samelsize and are usually in the form shown
in plan in FIG. 1, and the guide rods 18—18 are ad
plate'or pad 13p, formed with a narrow forwardly di
justable in spacingto accommodate'them. When each
of plate 11, as seen best in FIG. 2.
The‘ top member ‘of each of the links of the conveyor
chain, as shown best in FIGS. 9 and 10, comprises a flat
rected linking portion 13ythat ~under'laps the-pad of the
next forward link. Pivot pins 38 join the links, and these
extend throughthe forward portions of the pads and the
forward ends of the'parts 13y as shown in FIG. 10. The
guide slot ‘12in the topplate '11 receives the chain, while
the pads’ 13p extend to opposite sides'o-f the slot and
entering. package, as conveyed by ‘belt 13, reaches the
inner end ‘of the straight run 13a, it is slid by the belt,
without changein direction, onto a thin, ?at plate 22
slide onthe plate, as shown in FIG. lei, thus to support
that is supported horizontally over and closely adjacent 15 the conveyor, for guidedvtravel.
the conveyor belt along the straight run 13b thereof as
best shown in FIG. 5. Upon its being slid onto this plate
22, the package is'momentarilystopped by reason of its
contact with a switch-actuating'lever23; the position of
the stopped package being shown’in dash lines'at 16a
in FIG. 5. Immediately thereafter the stopped package
is pushed a de?nite interval'alon'g the plate 22 in a direc
tion at arightangle to .the direction of incoming pack
ages, by means of a plunger 25 that is actuated by the
grouping cylinder26. This'cylinder is op'eratively mount 25
ed upon a forward extension 11x of the top plate 11, as
shown in FIG. 1.
l
The reciprocal action of the plunger 25 is such as to
engage and advance the stopped package to a position on
the plate 22 at which it is‘ in the clear of the next package
delivered by the conveyor beltonto plate 22. For ex
ample, the ?rst package stopped will be advanced from
Next referringto the plungers or rams '25 and 28 and
their operating cylinders. The grouping'plunger25, as
shown in FIG." 1, isiin‘thefoirm of ‘a hollow,‘ box-like
housing with a ?at, ‘vertical forward end surface." Its‘for
ward endportion is ‘made narrow"'while the rearward
portion is widened ‘to enclose its‘ actuating‘ cylinder 26
lengthwise therein, asjshown in' FIGS. 1 and 4. The
cylinder 26"is equippedat ‘its outer end for its control
with a solenoid ‘valve which 'isdesi‘gnated ‘in its‘ entirety
in ‘these views‘by reference numeral 40. Reciprocally
contained in the cylinder 2'6‘is a piston’l?'fror'n which a
rod 42 extends. At its/outer‘ enjdthe rodv is ?xed,v as at 43,
to the end wall‘of the plunger ‘housing.’ At the end op
posite that from which the piston 'ro‘d’extends‘,'the cylin
der is equippe'd‘with a supporting ‘stem '44 that is ?xed in
a vertical ‘bracket '45.‘ This ‘bracket, in'turn, is ?xed to
the 'to'p'pla'te of the frame extension 11x.‘
the dash'line position 16a in 'FIG. ‘5 to the dash line posi
The plunger'25 as applied‘about the cylinder 26 is sup
tion 16b. The advancement of packages in face to face
ported and ‘guided in'its reciprocal action by a horizontal
contact, on plate 22 as ‘effected by successive operation 35 rod'48 that is iigidly'?xed at one en-dlintthe' bracket 45,
of the plunger 25 is as ‘illustrated in FIG. 6. When a
as observed in FIG. 4. This rod is‘cont‘ained slidably in
package group of a ‘designated le‘ngth'has been formed,
a bearing~49lthatiis ‘?xed to the ‘top wall of and within
for example, such as the three package group in FIG. 6,
the plunger forming housing. When operating air is ad
the advancement of the third "package by plunger 25
mitted to ‘the outer endof the cylinder '26 by the con
causes the row of packages toeengage and ‘activate a 40 trolling'action of‘ the solenoid valve 40, the piston rod 42
switch lever 27. Thi'scauses thebag stut?'ng plunger 28
to be energized to push the group laterally from the plate
22, through a nozzle 29.," later described, and into ‘a bag
30 that is held in open position on the nozzle. Such ad
vancement of these package groups‘ has been illustrated in
FIG. 7. The movements ofplunger 28 are eifected by the
stuf?ng cylinder 31 vwhich is mounted on plate 11 as
shown in.- FIG. 3, and later'described.
The number of packages assembled in each vgroup de
pends on the transverse thickness of the packages and
the size of the bag which is tov receive them. In the pres
ent drawings I have shown‘ an assembly of three packages
in each group. Each vgroup forms a layer when advanced
into the bag. However, .if the packages are larger, they
may be assembled in groups of two. If smaller, they
may be assembled in groups of four or more.
It is also 55
to be understood that when the packages are of such size
that only one at a time can be moved into the bag, the
direction of travel of the belt'13. is reversed so that the
is causedto be" extended. This'causes the plunger 25 to
move from its ~position'li'n FIG.'5 to‘ that'of FIG. '6, and
by this movement to advance the temporarily‘stopp'ed
package from that position‘dcsignated at ‘16a to that of
16b. Reversal of the‘ valve causes the'cylinder'to operate
'to return the plunger'ito ‘its'retracted position as‘ in FIG. 5.
The circuit of solenoid “valve 401s under ‘control of
two switches, '52 and ‘53. Switch 52 is mounted on a
?xed member as seen in ‘FIG. '5 ‘and is actuated from
open to closed position by the lever 23 when moved by
the incoming packages 16 'as'th’ey- are slid by'belt 13 onto
plate 22.’ Switch'53, ‘likewise, has a '?xed mounting on
plate 11, as seen in- FIG. '1, and'is‘actuated by contact
therewith of a cam plate 26x ‘that is ?xed on a side of
the. plunger 26 as the plunger reaches its fully extended
position. Closing ‘of switch 52*5results in the extending
ofwthe plunger 26 ‘and the'closing'of switch 53 results
in' its' retraction; both‘ ‘movements being accomplished
under control of air cylinder 26.
Successive advancements 'of‘packag'es 16 'along‘plate
packages are delivered thereby onto the plate 22 from its
opposite end. This mode ofroperation Will be later de— 60 22..as. effected by the‘ action of plunger-25 causes a row
scribed. ‘
of packages to be formed. The row ?nally is advanced
Before describing the construction and mode of oper
against. the ‘switch lever 27 that extends transversely
ation of the grouping and stuffing cylinders, the nozzle
across the plate 22; When this lever, which is of the
and the bag holding clamp, the construction of. the con
vertical plate form shown in FIGS. 3 ‘and 12,1is moved
"eyor belt 13 andits ‘driving means will be described, 65 against a stop plate 54x whichv is disposed back of it, it
reference being directed'to FIGS. 9 andlOf In these
operates simultaneously to Iclose' 1a switch 54 that ‘is
mounted on plate54x. The closing of this‘switch re
views it is'shown that the conveyor belt 13 is made up of
sults in the energizing of-air cylinder 31 to effect‘ an ex
a continuous roller chain belt'13x- At the receiving end
tending movement of the plunger .28 for the advance
of the machine this belt operates about a sprocket wheel
32, mounted for rotation upon a supporting spindle 33 70 vment of the assembled row of packages into the nozzle
29 preparatory to being ?nally advanced therefrom into
that is ?xed to the under side 'ofzplate 11. _ At the junc
a bag which has been positioned on the-nozzle to re
ture of the runs 13a and‘13b, the chain belt'operates
ceive them, as'in FIG. 7.
about and is ‘adapted to be driven by a sprocket wheel
Before describing this bag stu?ing operation, it will
34, which is ?xed onthevertical:-drive shaft 35 of‘a're 75 -~be'-explained-'
that‘ the air‘ cylinder 31, "as ‘shown in FIGS.
3,019,576
1 and 3, is equipped at its outer end with a solenoid valve
55 whereby its reciprocal action is controlled. The cyl
6
clamp and pushes the bag free of the nozzle. During
the bag stuffing operation the bag rests on the table 65 as
inder contains a piston 56 from which a rod 57 extends.
Rod 57 connects at its outer end with the end wall of
indicated in FIG. 2.
may be integral with a continuation of plate 22 that over
lies the belt as seen in FIG. 3. The nozzle also has'oppo- '
plunger to continue its outward travel; As it moves out
wardly, the cam plate 91 engages a switch 94 which
The relatively short normal movement of the plunger
the plunger housing, as at SS in FIG. 3. This plunger is UK 28 for advancing a row of packages, as grouped on plate
22 by plunger 25, into the nozzle 29 is from its full line
of hollow, box-like construction and encloses the air
position in FIG. 5 to the advanced position indicated in
cylinder 31 therein. The cylinder is supported at its
dash lines. It is stopped when it has reached that distance
opposite ends by brackets 59 and 60 that are ?xed upon
by the contacting of a switch cam plate 91 that is ?xed to
the table top plate 11. The plunger is supported and
guided in its reciprocal travel by reason of its connec 10 a side thereof, with the actuating lever of a switch 92
that is located in the line of travel of the cam plate as
tion at one end with the piston rod and by a bearing
seen in FIG. 1. The closing of switch 92 causes that
block 62 ?xed thereon for sliding on a horizontal sup
adjustment of solenoid valve 55 that is required to return
porting rod 63 that is fixed to and extends between the
the plunger to retracted position. The full advance
brackets 5? and 60.
movement of the plunger 28 that is effected for the
When a row of assembled packages is pushed laterally .
purpose of stuf?ng the bag and then moving it from
from plate 22 by an extending movement of the plunger
the nozzle, is controlled by a switch 93 that is located in
28, it is moved from the full line position shown in FIG.
table 65, as seen in FIG. 73.: This switch has an actuat
6 to the dotted line position, thus moving all packages
ing lever 93xextended slightly above'the, top of table
of the pushed row into the mouth or entrance to nozzle
65 in a position to be depressed by the weight-of pack
Z? for later advancement into the bag 30 that has been
ages when they closely approach the outer end of the
applied to the nozzle. ’ As shown best in FIGS. 3 through
bag. With the depression of. the lever, the switch is
7, the nozzle is substantially of square, tubular form in
closed. This cuts out the - switch 92 and causes the
cross-section and comprises a ?at bottom plate 2% which
operates to release the clamp to free the bag. Upon the
site sidewalls 29s-29s and a swinging top wall 29:. The
plunger 28 being extended that additional distance re
passage through the nozzle is of the rectangular form as
quired to push a package ?lled bag 39, from the nozzle,
con best in FIG. 8. The nozzle 29 is supported rigidly
the cam plate 91 engages and actuates a switch 95 which
in position immediately above a horizontal table member
65 which is at the same level as plate 11 and is‘, ?xed to 30 reverses the valve 55 and causes the return of the plunger
to its fully retracted position. When the plunger 28 re
the main frame structure 10. It is so supported that the
turns to its fully retracted position, the cam plate ‘91
open end of a bag 30 can he slipped thereover as has been
closes a switch 96 which is a part of the control circuit
illustrated in FIG. 7 with the closed end of the bag
for the valve 40 which controls the movements of the
resting upon the table ‘65.
It is necessary for proper ?llin0 or stufling of the bag, 35 plunger 26. This switch is used to insure that the plunger
that it be secured. In the present instance, after the
open end of the bag has been applied about the nozzle
as in FIG. 7, it is there secured by a pair or“ clamp bars
70-71 that are disposed vertically at opposite sides'of
25 cannot be actuated forwardly until the plunger 28 is
fully retracted and is in the clear of packages that would
be advanced by it.
Switches 92, 95, 96 and 99 are mounted on the table
the nozzle to coact with its sidewalls as has been shown
top in position for actuation by plate 91_as mounted on
best in FIG. 8. It is shown in FIG. 8 that the bar 71
is mounted on and is ?xed at its upper and lower ends,
plunger 28 as shown in FIG. 1.
respectively, to horizontally disposed rods 72 and 73 that
extend transversely of the nozzle above and below it and
are slidably contained in supporting bearings 75—-75’
?xed in a frame structure 76 that is rigidly attached to
the main frame structure 10. The clamp bar 7% is slid
able at its upper and lower ends on the rods 72 and 73.
At their inner ends the rods 72 and 73 are connected by
a vertical bar '78 so that endwise movements of the clamp 50
ing rods 72 and 73 will be in unison. Disposed horizon
tally between the bars 70 and 78 is an air cylinder 86
containing a piston 81 from which a piston rod 82 ex
tends. The cylinder is ?xed to rod 78, as at 85 and rod
82 is ?xed to clamp bar 70 as at 8'5. Admittance of air
to the left hand end of the cylinder as shown in FIG. 8,
causes the rod to be extended and the clamp bars to be
forced against opposite sidewalls of the nozzle to coact
Compressed air is supplied to the machine through pipe
line 97 and ?lters 97’—-97’ and beyond these latter, pipe
lines 4%’ and 55’ lead to the solenoid valves 4%, 55 respec
tively, and a pipe line 98’ leads to a solenoid valve 98
which is associated with and controls action of the air
cylinder 80.
The control circuit for valve 98 is under control of
push button switches 99 and 1%. Closing of switch 99
effects closing of the bag clamp and the other effects its
manual release. It is the switch 94 that controls its auto
matic release.
In the wiring diagram shown in FIG. 13, parts rep
resenting the plungers, solenoid valves, control switches,
nozzle and clamp have been given their previously des
ignated reference numerals. The solenoid valves and
switches employed are conventional. Current supply
lines are designated at 101 and 192.
therewith to grip and hold the open end portion of bag
Assuming that the machine is so constructed, its opera
30 on the nozzle while being stuffed with packages by 60 tion for assemblying the packages and stu?ing them in an
the action of plunger 28. This connection also provides
orderly manner in the paper bags is as follows:
equalization of clamping pressures as applied by the bars.
First, the open end of a selected paper bag 3%‘ is ap
When air pressure is applied to the other end of the cyl
plied over the nozzle 29 and is clamped in position; this
inder, the clamp bars will be moved apart and the clamp
being e?ected by pressing the circuit closing switch button
ing effect released.
65 1% that effects that adjustment of valve 98 for the admit
in the bag stu?ing operation, as eiiected by the normal
tance of air under pressure to that end of the cylinder
movement of the plunger 28, each successive row of
whereby the clamp bars 7 i) and 71 are moved into clamp
packages, as advanced into the nozzle, pushes ahead of
ing position. The conveyor driving motor 36 is then set
it the rows previously advanced. Thus, the rows of pack
in motion to convey the packages 16, as received in suc
ages, as indicated in FIG. 7, move progressively into the
cession from feed conveyor 17, along the guideway lead
bag as a unit. With the advancement by the plunger
ing onto plate 22. As each package moves onto the plate
05 the ?nal row of packages required to ?ll the secured
22 it actuates switch lever 23, causing it to close switch
bag, the plunger is caused to move an additional distance
beyond its normal travel that ?rst moves the assembly of
52 thus to energize solenoid valve 46 and cause it to ad
just its position to admit air under pressure to the outer
bags tightly into the bag, then eiiects the release of the 75 end of air cylinder 26 and cause plunger 25 to move in
3,019,676
72'
8
wardly, th‘us to advance the stopped package along-plate
22. As the plunger 25'completes its advancing stroke, it
endof thelplate~22r Then, as each package is pushed by
engages and closes switch 53 thus causing the reversal of
the solenoid valve and the retraction of the plunger to
starting position. Thispackage advancing operation is
repeated,‘ with the delivery of each package 16, until the
row of incoming packages, as grouped and advanced along
the plate 22 is caused to‘ engage‘the plate 27 and move it
the conveyor chain belt onto plate 22, it actuate-s the sub
stituted switch lever to cause the operation of plunger 28
to push the package into the nozzle. Successive opera
tions result in ?lling the bag, its stutiing and discharge in
the same manner as previously explained.
What I claim as new is:
-
1. In a package bagging machine a tubular nozzle
about which the open end of a bag may be applied for
to close switch 54 thus to energize the solenoid valve 55
and cause it to admit air to cylinder 31 and extend the 10 ?lling with packages advanced through the nozzle, and
plunger 28 and push the assembled row of packages into
a releasable clamp associated with the nozzle for secur
the mouth of nozzle 29. As the plunger 28 starts on this
ing the bag thereon 'for ?lling; said clamp comprising
movement it opens switch 96 to‘ deenergizes plunger 25.
paired, parallel rods mounted -for endwise movement
When ‘it completes this operation it engages and closes
above and below the nozzle, a vertical clamp bar joining
switch 92 whereby the solenoid valve 55 is reversed and the
said rods across one side of the nozzle, another clamp bar
plunger caused to retract. Also, as it moves into its re
extended between the rods and slidable thereon at the
tracted position, it closes switch 96. With therepeated
other side of the nozzle, and a bar joiningthe ends of
advancement of‘ rows or ‘groups of packages into the bag,
said rods at thatcside of the nozzle,‘ and an expandable ‘
the bag ?nally is ?lled to near its outer end. When‘the
and contractable power means mounted between and con
bag‘reaches a condition that requires only one more row
nected to the two last mentioned bars to“ actuate the
to ?ll it, the weight-of packages causes the switch actuat
ing lever 93x to be pressed down and the switch 92 to be
cut out of the control circuit of solenoid valve 55, so that
the next extending'action of the plunger 28 will be ‘to its
clamp for holding orreleasing the bag.
full extent. In this movement,?the plunger stuffs the com
pletinggrow of packages and those ahead of its-‘into the
bag. In'the stu?ing’operation the cam plate 91 actuates
the-switch 94 to release the bag holding clamp. The bag,
thus released, is then pushed free of the nozzle by the ?nal
2. In a package bagging machine'a tubular nozzle of
rectangular cross-section aboutiwhich the open end of
a-bag'may be applied for?lling with packages advanced
through the nozzle, and a releasable clamp associated
with the nozzle for securing the bag thereon for ?lling;
said clamp comprising paired,'parallel rods mounted for
endwise movement above and below the nozzle, a vertical
clamp bar joining said rods across one side of the nozzle,
movement of the plunger.‘ When the plunger has reached 30 another clamp bar extended between the rods and slida
the‘ end of its travel, the campl‘ate 91 closes the switch
ble'thereon at the other side of the nozzle,‘and a bar
95 and thus reverses the solenoid valve 55 and causes re
joining the-ends of said rods at that side of the nozzle,
turn of :the plunger>28to its retracted position. The re
an air cylinder disposed'between the last two bars ‘men
turn of the plunger to retracted‘ position‘ closes switch
tioned ?xed to one and having its piston'rod ?xed to the
96' and again‘ readies? the control circuit for action of
other, a source of air under pressure and ‘a solenoid valve
plunger '25.‘
In‘the event that packages ‘16 are of such size‘ that they
operable to effect application of operating air to ‘the
cylinder to causethe ?rst two bars mentioned to coact
with opposite sides of the nozzle to secure the bag
can only be moved into a bag one at a‘tirne instead of in
thereon.
rows or groups containing two'or more packages, then the
travel of the belt'13 is reversed and incoming packages are 40
References Cited in the ?le of this patent
caused to be conveyed therebyalong the runs 13d and 130,
UNITED- STATES PATENTS
and to ‘move onto plate 22 from the opposite end. In such
instance, the switch control mechanism-shown at‘ the top
of FIG. 5, including plate 54x,‘ switch 54 and lever 27,
2,613,021
2,633,280
is removed and a switch and stop mechanism correspond 45
2,651,896
Woodrui‘r‘ ; ____ _;. _____ __ Sept.‘ 15, 1953
2,834,167
Loveridge ____________ __ May 13,1958
ing thereto in purpose‘ and‘action is placed at the opposite
Bowes ___________ __Y___;_'Oct.>7, 1952
Davies _________ __~_____'- Mar. 31, 1953
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