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Патент USA US2121821

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June 28, 1938.
I
H. PAXTON
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2,121,821
BOX EJECTOR
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Filed Sept. 30, 1935
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5 Sheets-Sheet 1
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June 28, 1938.
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H. PAXTON
Box
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2,121,321
EJECTOR
Filed Sept. 50, 1935
s Sheets-Sheet 2
June 28, 1938;
H. PAXTON
2,121,821
BOX EJECTOR
Filed Sept. 30, 1955
F226
3 Sheets-Sheet 3
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Patented June 28, 17938
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f UNITED STATES *
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Box Emerson
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Hale Paxton, Santa Ana“; Calif-L,v assi‘gn'or} by"
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mesne assignments, to Food Machinery Corpo
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rationgacorporatio’n of Delaware
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. Application-Septemben so, 1935-, SeriaLNm42,750: I
(01. 1-10)
8 Claims.
My invention relates to box lidding‘ machines
and more particularly to an ejector for discharg
ing‘ a: box from such a machine after they lidding
themachine afterthe completion: of a;1id'.secu_r.—
ing
operation.
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Fig:, 11. is-a fragmentary, side'elevational view '
looking in the direction of the- arrow H- of.
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“In the agriculturalv industry; fresh fruits and ' Referring’ speci?cally- tothe drawings, alidding
vegetables are packed. in suitable crates or boxes machine.- l-IJ,- comprising. a preferred embodiment
. for shipment, to market. The packed containers of my inventionnisshown in Fig. 1., thismachine
are conveyedto a 'lidding machine such as that including a ‘frame 1.1,. power. unit. 1.2,. box; sup‘
disclosedin; the copending applicationiof I-Iale porting table 1.3. and.- a. lid. securing: mechanism
comprises. two. lid. nailing units [4,. With 19" V I
no. Paxton et 2.1., Serial No. 688,104, ?led September which
7 5-, 1933, for Automatic lid‘ nailing ‘and strapping the exception of-the table. l3, the. machine 10
machine. After being lidded‘, the containers are issubstantially similar to.v the machine: disclosed
in the. above referred. to copending- application...
‘ discharged from the lidding machine-ionto'ia stor
The frame ll.v includes a base. 20. from which
age conveyor.
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pairs of. front and. rear corner posts- 22- andv 2.3 135
An-objectof my invention is to provide anejec
tor for a lidding machine that: will automatically respectively: extend. Fixed- on. the; upper. ends of
the posts: 22- and: 23. are front. and". rear plates 24
and quicky eject a-boxfrom the machine in re
sponse to the completion; of’ arliddingv operation. and, 25-respectively. Secured atits-opposite, ends V
Another objectv of my invention is to. provide a to the rear. posts 23-, as seen, in: Figs. 1. and. 2,. is a
mechanism that serves to. position a boxv
a I horizontal angle'i-ron bar 26. the purpose. of. which 29
lidding machine in: addition .to ejecting the box‘ will be made clear- hereinaften. Mounted. inside '
of each. of the: corner posts. 22K and. 23,. is a. track
after the lidding operation.
2!! having aninclined portion. 28 at itsv lower
Still" another object of- my invention is to‘ pro
operation;
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vide an. ejector for a lidding machine having" a
vertically movable box supporting. table in; which
end as seen in Fig. 2.
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The power unit l2 includes: a. motor (not 25
thezpower for operating. the ejector is derived: in shown)
housing; for
3|. as.
driving
shownina gear
Fig.
3,0; 1.disposed.
~ A. switch
within
32; isa
response to downwardmovementof the table.
Further objects and advantages will beumade
manifest in the following description. taken in
r39 connection with the accompanying: drawings, in.
which:.
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Fig. I is a front elevational‘ view of a lidding
‘machine which includes a. preferred form of box
ejector of my invention.
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provided for controlling the motor in response to 7
manual operation ota foot pedal 33.
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The table [3 includes transverse bars 35; and. 3.6; 3,0
the ends of. the latter being disposed, in sliding
relationr‘with the corner posts 22 and 23: as shown
in;F.‘-i-g.,.v3..{ ‘ Extending between thebars. 35 and. 3-6
are. longitudinal bars; 38,. 39,,‘ 40; and. 42]., there
being rollers, 42 mounted between the bars; 38 35
looking in. the direction of the. arrow 2/. of Fig-1. ' and 39; and. therbars- ll!)~ and 4|. asshown- Fixed
3zis'a horizontal. sectional view'taken. on . on the- under side of the‘ table I3. and extending
downward through the gear 30- is a screw 42.
the line 3i-—3l. of'Fig. 1.
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Fig. ‘2 is» a fragmentary, side elevational view
5 Fig.4‘ is'a' vertical sectional view taken on the
line 44% of’ Fig. 3.
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5.. is. an" enlarged, vertical sectional View ‘ method in‘ the bars'35. and 35.
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taken on. the line. 5—‘-5. of Fig. 4'.
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. Mounted on the table l3- (Fig.7. 2)- are side?ush
ers,45,ltheseincluding horizontal: shafts 4,6.jo11r- 4:0
Fig. 6 is a fragmentary, vertical’ sectional view .
taken on the line 6-6 of Fig. 5.
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Fig. '7 is a. fragmentarmdétail View of a portio
of tham'echanism shown in Fig. 4.
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Fig. 8.is a vertical. sectionali view similar to. Fig.
sand illustrating position of the parts of the in.
vention with a box being‘ received’. into- the ma
chine;
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Welded to opposite
ends of theshafts 46 are leversdlhaving; rollerslls
on their upper endsthe rollers being disposed. in
vertical alignment with. the aforementioned tracks
2'1; of the posts 22. and 23.. Suspended between 45
the lower ends-ofthe levels 4.1 are springs 50,, one
of which is shown in Fig. 2. Extending upward
'from each of the '?usher shafts’ 46 are arms 52 as
shown in Fig’. 1.
Secured. to. the arms;5.2 of. each
of the flushers 45 is a bar Sit-having arcuate end 5;)
. Fig. 9.‘ i513. View similar to Fig. 8::si'mwing‘the: box
portions 54, thelatter serving to centralizev the box,
as it ?rst comesto rest in- the-machine with stops
on the table l-3 as shown in Fig.11. Above the
bar 53. on the outermost; bars 52-v are box. end
engaging both ends ofthe box.
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Fig. 10 is a view similar to Fig. 9 illustrating
the commencement of the ejection of. a, box; from
engaging arms 55 for centralizing a box longi
tudinally on the table
a manner to, be 'de- 55
2
2,121,821
scribed hereinafter.
Mounted on the upper ex
being a short shaft 6! extending between the bar
69 and'the bar 35. Rotatably mounted on the
contact with the dog Star as shown in Fig. 9,
rightward movement of the dog 9860, as viewed
shaft 6! is a box stop 62 having an apertured
ear 69 extending from one side thereof as shown
in Fig. 9, being prevented by engagement of the
The stop 62 is normally urged against
10 the bar 99 by a compression spring 64 provided on
the shaft 6!.
Connecting the ear B3 of the stop
62 with one of the levers 4‘! of the rear flusher
shaft 46 is a contractable link 66, the latter being
. normally extended by a compression spring 6'! as
15 shown in Fig. 2.
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Mounted on the table 13 is a box ejector ‘it
which includes a hollow shaft 1! journalled in a
bearing 12 on the bar 38 as shown in Fig. 5.
Fixed’ on one end of the shaft ‘I! is a pinion 13
20 positioned to mesh with a vertically disposed
rack M, the latter being ?xed'at its lower end to
a block 15 on the angle iron bar 26 as shown in
Fig.5. Provided on the bar 38 of the table !3
adjacent the bearing 72 is a bracket 11 having a
v25 flanged roller '58 mounted thereon, the roller 18
serving to maintain the rack 74 in meshing rela
tion with the pinion 13 as seen in Fig. 3.
Rotatably mounted in ‘a bearing 89 on the bar
45) of the table !3 is a shaft 8!, one end of which
30 is rotatably received by the hollow 'end of the
shaft 7! as shown in Figs. 5 and 10. Keyed on
the shaft 8! is a sprocket 82 having a spring
pressed pin 83 slidably mounted in the hub
thereof. Rotatable on the shaft 8! between the
sprocket 82 and the end of the hollow shaft 1! is
a collar 85, the latter being formedto provide
ratchet teeth 85 for engagement with the pin 83
of the sprocket 82. Coiled about the shaft 1! is
a torsion spring 83 ?xed at its ends to the shaft
40 7! and collar 85 as shown in Fig. 5. Fixed on
the shaft 8! adjacent the bar 40 is a ratchet wheel
89 for engagement with a pawl 99 on the bar 40
as shown in Fig. 6. Surrounding the shaft 8!
between the sprocket 82 and the ratchet wheel
89 is a spacer sleeve 9!.
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Provided between the bars 39 and 49 of the
pawl 99 with the aforedescribed ratchet wheel 89.
Whenthe box B is thus positioned between the
stop 62 and dog‘ 98a as shown in Fig. 9, the oper 10
ator depresses the foot pedal 33' causing the power
unit !2 to raise the table !3. As the table !3
"rises, the ?usher shafts 46 are rotated by en
gagement of the rollers 48 of the levers 4'! with
the tracks 2'! causing the ?ushers 45 to swing 15
inward against the box B as shown in Fig. 11, it
being noted that the ends 54! of the bars 53 are
pressed against the sides of the box while the
arms 55 engage the ends of the box. Rotation of
the rear ?usher shaft 55 also causes link 66 to 20
rotate the stop 6'? out from in front of the box
end as shown in Figs. 10 and 11, it being noted
that as soon as the stop 62 clears the box end,
the spring 64 urges the stop partially under the
box against the bar 69. During upward travel 25
of the table !3, the shaft 7! is rotated by en
gagement of the pinion 73 with the rack ‘M.
The
spring 98 and collar 85 are rotated with the shaft
‘I’! while the shaftt! remains stationary, reverse
rotation thereof being prevented by engagement 30
of the pawl 99 with the ratchet wheel 89. As
the table !3 rises to its uppermost position, the
lid L is pressed onto the contents of the box
and nailed at its ends to the ends of the box.
When the table l3 moves downward following the
lid nailing operation, the shaft ‘H is again rotated 35
by the‘ rack ‘id, but in the opposite direction to
that during upward movement of the table 5 3.
The torsion spring 38 rotates with the shaft 2'!
but the collar 85 is locked by engagement of one 40
of the teeth 86 thereof with the 'pin 83 of the
sprocket 82. Thus, as the table !3 descends,
power is stored in the spring 93 as the latter is
wound up, this power tending to rotate the
sprocket 82 in a counter clockwise direction as 45
viewed in Fig. 10.
The dog 98a is thus urged
table !3 is a shaft 93 having a pair of spaced
against the rear end of the box B while the latter
collars Ell ?xed thereon, there being an idle
is prevented from moving on the table !3 by the
sprocket S5 rotatable on the shaft 93 between'
50 the collars 9d. Trained about the sprockets 82
and 95 is an endless chain 96. Pivotally mounted
on pins 9? of the chain 96 is a pair of identical
box engaging dogs 98a and 9817, one of the latter
being‘ clearly shown in Fig. '7. Provided in side
55 walls 99 of the dogs 98a and 981) are arcuate
slots ills for receiving the ends of pins it]! of the
chain 96. The dogs 98a and 98b are ‘normally
urged outward from the chain 96 by spring ?n
gers Hi2. Mounted on the aforementioned gear
60 housing 3! is an angle bracket N34 for engage
ment with the dogs 98a and 9812 as will be de
scribed hereinafter.
The nailing units !4 are constructed substan
tially as set forth in the above referred to co
65 pending application, and serve to secure a lid L
shownin Fig. 1 to a packed box B.
Operation
V70
against the spring 64, thus permitting the dog
98a to return to its uppermost position. As the
box B is stopped, the stop 52 urges the box'into
in Fig. 2.
45
as shown in Fig. 9, the stop 52 is moved leftward
tremities of the arms 52 are side flusher plates 56.
Mounted between the bars 39 and 40 of the
table l3 as shown in Fig. 3, is a bar 60, there
The lidding machine I!) of my invention oper
ates in the following manner. As the box 13 rolls
onto the table i3 from a suitable delivery con~
veyor fit, the uppermost dog 98a is depressed
as shown in Fig. 8, while the dog 98?) engages the
angle bracket HM to prevent movement 'of the
chain 96. When the box B strikes the stop 62,
arms 55 of the ?ushers 45. _
As the table I3 approaches its lowermost posi 50
tion, the rollers 48 of the levers 41, roll down the
‘inclined portions 28 of the tracks 21 causing the
?ushers 45 to swing outward away from the box
B.
As the arms 55 move out from in front of
the box B, the sprocket B2 is rotated ‘by the 55
unwinding of the spring 88, causing the dog 98a
to urge the box B off of the table ! 3 onto a suitable
conveyor H2. While the box B is being dis
charged from the machine it by the ejector ‘Ill,
the table !3 arrives at its lowermost position and
the chain 96 is stopped after ejecting the box by
engagement of the dog 98a with the angle bracket
I94, the dog 9% being disposed in the position of
the dog 98a shown in Fig. 4.
That portion of the entire operation of the 65
machine it which is directly involved in the se
.curing of the lid L onto the box B and which
may be termed a lid' securing operation of the
machine, begins with the contact of the box being
elevated on the nailing table [3 with the lid 70
securing mechanism disposed thereabove and
terminates with the downward movement of this
box as it passes out of contact with said mech
anism.
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Although I have shown and described but one 75
2,121,821
3
"preferred form of’ my invention, it is to be un ,box; and power‘means' for setting said chain in
derstood that various modi?cations and changes motion after a lid securing operation to cause said might be made therein without departing from box‘ engaging means to quickly expel said box
the spirit of the inventionor the scope of the from ‘said table.
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following claims. '
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I claim as my invention:
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5. A combination as in claim 4 in which said
’ chain is actuated in response to said second rela
1. In a machine for securinga lid on a packed [ tive'vertical movement between said table and
box, thevcombination of: a supporting structure;
a table on said structurefor receiving and'sup
porting‘ a box; lidse'curing mechanism .on said
‘ structure above said‘ table; power means causing’
‘relative vertical movement between ‘said table
and said lid securing mechanism-‘to effect a lid
‘said lid securing mechanism.
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6. In a machine for securing a lid on a packed ‘
box, 'the‘ combination of: a‘frame; 'lid securing 10
mechanism on the upper end of said frame; a
box supporting table on‘said frame below'said
lid securing mechanism; said table being movable
securing operation and causing a second relative , vertically toward and’ away from said lid secur
15 vertical movement between saidtable and said ing mechanism; an endless chainiextending lon
lid securing mechanism to restore the normal ver- I gitudinally relative to said table; means on said
tical spaced relationship betweensaid table and
said mechanism; a primarylstop on said table to
engage the ‘front end of said box; a secondary
v20 stop on said table to engage therear end of said
box, said primary and secondary stops cooperat
ing to center said box longitudinally on said table;
means for removing said primarystop from in
front of said box ;‘and means'for moving said sec
25 ondary stop toward said primary stop to eject said
chain for engaging an end of said box; and means
responsive to downward movement of said table
for setting in motion said endless chain to cause
said box engaging means to expel said box from 20
' said table.v
7. In a machine for securing a lid on a packed
box, the combination of: a supporting structure;
a table on said structure ‘for receiving and sup
porting a box; lid securing mechanism on said 25
wbox from; said'table subsequent to said lid se
structure above said table; means causing rel
ative vertical movement between said table and‘
‘ 2. A combination as in claim 1 in which said
said lid securing mechanism to effectra lid secur
.means for moving said secondary stop toward said 7 ing operation and causing a second relative ver-'
30 primary stop is actuated in response to said sec
tical movement between said table and saidvlid 30
- 0nd relative vertical movement between said‘ table securing mechanism to restore the normal ver
and said lid securing mechanism.
tical spaced'relationship between said table and
3. In a machine for securing a lid on a packed V said mechanism; means for retaining said box in
- box, the combination ‘of: a frame; lid securing centralized relation to said table during said lid
=35 mechanism on the upper end of said frame; a securing operation and releasing said box there 35.’
box supporting table on said frame below said . after; endless chain means on said table; a box
lid securing mechanism, said table being mov
engaging dog‘ on said, chain; and power means,
able vertically toward and away from said lid yieldably connected to said chain to urge said
securing mechanism; a primary stop on said table dog against said box in response to said second
for engaging the front end of said box; a second
relative vertical movement and eject said box 40.
ary stop on said table for engaging the ‘rear end ' from said machine.
; of said ‘box, said primary and secondary stops
8. In a machine for securing a lid on a packed
serving to centralize said box longitudinally on box, the combination of: a supporting structure;
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said table; means forv removing said primary stop "a table on said structure for receiving and sup
porting a box; lid securing mechanism on ‘said V45
'- I45" from in front of said boxiand means for mov
ing said secondary stop toward said primary stop structure above said table; power means causing
to eject said box from said table,- said'last men
relative vertical movement between said table and
curing operation.
x
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x
’ ticned means being actuated in response to said lid securing mechanism to effect a lid secur
downward movement of said table following a lid ' ing-operation and causing a second relative ver
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. tical movement between said table and said lid 50'
50 securing operation.
4. In a machine for securing a lid on a packed securing mechanism to restore the normal verti-j
box, the combination of: a supporting structure;
a table on said structure for receiving and sup
porting a packed box; lid securing mechanism on
said structure above said table; power means
causing relative vertical movement between said
table and said lid securing mechanism to. effect
alid securing‘ operation and‘ causing a second
. relative vertical movement between said table and
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said lid securing mechanism to restore‘the nor
mal vertical spacedv relationship between said
table and said mechanism; an endless chain ex
tending longitudinally relative to said table;
means on said chain for engaging an endof said
cal spaced relationship between said table and
said mechanism; means for retaining said box in
longitudinally centralized relation to said table
during said lid securing operation; endless chain 55
'means' on said table; a box engaging dog on said
chain'means; rack and pinion means operable in I
response to said second relative vertical move
ment; and spring means connecting said rack‘
and pinion means and said chain to yieldably 60
transmit power from said rack and. pinion means
to said chain.
HALE PAXTON.
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