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Патент USA US3064566

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Nov. 20, 1962
u. F. LUEBBEN
3,064,556
ROTARY BALER IMPROVEMENT
original Filed Feb. 21, 1951
’7 Sheets-Sheet l
IN VEN TOR.
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Nov. 20, 1962
u. F. LUEBBEN
3,064,556
ROTARY BALEZR IMPROVEMENT
Original Filed Feb. 2l, 1951
Y Sheets-Shree?l 2
Nov. .20, ,1962
u. F. LUE-BBEN
ROTARY ABALERlIIVIPRCWEMENT
Original `Eiled`Feb. 2l, V195].
`7 ivSheetsèSheet :3
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Nov. 20, 111962
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u. F. LUEBBEN
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`ROTARY ïBALER IMPROVEMENT
Original Filed îFeb. «21, I1951
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ROTARY BALER IMPROVEMENT
Original Filed Feb. 21, 1951
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ROTARY BALER IMPROVEMENT
Original Filed Feb. 2l, 1951
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Nov. 20, 1962
U. F. LUEBBEN
3,064,556
ROTARY BALER IMPROVEMENT
Original Filed Feb. 2l, 1951
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United States Estant
l.
3,064,55á
ROTARY BALER IMPRÜVEMENT
Ummo F. Lnebben, deceased, late of Ürnaha, Nebr., by
Promoting Enduring Peace, Inc., West Haven, Conn.,
and Robert Schaikenbach Foundation, New York, FLY.,
and Emily Lneblren, incompetent, by Roman L. Hins
ha, Ürnaha, Nebr., guardian, and American Friends
Service Committee, Philadelphia, Pa., and P/Iadeiine
3,054,556
Patented Nov. 20, 1952
2
travel of the twine providing a more lasting and certain
cutting of the twine.
Another object is to provide a swingable V-shaped guard
over the knives to prevent the twines from contacting
the knives at final wrapping until an extra amount of twine
has been wrapped about the center of the bale and to cause
the twines to bend and to be in great tension for a snap
ping and angular contact with the knives when the guard
Kavanagh, Anaheim, Calif., heirs
is removed.
'
Continuation of application Ser. No. 212,005, Feb. 2i, 10
Another object is to provide a guard over the knives to
1951. This application Nov. 6, 1957, Ser. No. 694,896
prevent the twines from being cut before the wrapping
S tliaims. (Cl. 10Q-5)
mechanism has returned to its original seated position of
This invention relates to rotary balers such as are used
rest; and thereupon the guard being suddenly removed
in the baling of compressible substances such as straw,
for a most effective and simultaneous cutting of both
cotton, corn stalks, hay and the like, and more particu 15 twines.
larly to pick up rotary hay balers.
Another object of the invention is to provide a clutch
Particular objects of the invention are to provide im
mechanism of improved and safer construction for trans
provements in the rotary balers of the type described in
ferring the motion of moving parts of the baler to a de.
two previous patents issued to U. F. Luebben, both titled,
livery conveyor.
“Rotary Baler,” one being numbered 2,336,491, issued 20 A further object of the invention is to provide a clutch
December 14, 1943, and the other being numbered
as described which holds the conveyor from reversing di
2,096,990, issued October 26, 1937.
rection or going forwardly when operatively disengaged
It is an object of the invention to provide an improve
and thus prevents hay or straw from unloading between
ment upon the Wrapping mechanism of said Patent
the conveyor pick~up and the ground.
25
#2,336,491 and, more particularly, improvement upon
Still a further object of the invention is to provide _a
the wrapping mechanism of the patent issued to P. H.
Harrer, titled, “Baling Machine,” numbered 2,424,821,
slip-clutch as described for providing a safety-slip in case
a rock or stick becomes caught in the conveyor.
Yet another object of the invention is to provide an ,
issued iuly 29, 1947.
A primary object of this invention is to lessen the time
adjustable, gradually-engaging, friction clutch employing
30 resilient means for providing proper frictional driving
of wrapping the bale.
Another object of the invention is to provide a means
contact.
whereby there will be no loss of time or uncertainty in
Rotary balers of the prior art have had a disadvantage
the catching of the string on the bale and the wrapping
in that when the wrapping has begun, hay sometimes
ofthe bale.
tangled and nevertheless continues to be pulled in, pulling
Yet a further object of the invention resides in the pro 35 the conveyor with it. This is true for the reason that the
vision of a more eiiicient and certain Wrapping mecha
conveyor is free to move, when operatively disengaged,
nism whereby the operator need not give the machine the
thus wrapping the hay on top of the twine.
close attention and manual action previously necessary.
It is, therefore, another and important object of this
A further object of the invention resides in the provision
invention to lock the conveyor when operatively disen
of a much simpler mechanism that is less likely to fail,
gaged, so that the mechanism cannot travel backward or
is more accessible, and has more simpliíied adjustments
forward.
than heretofore.
Yet another object of the invention is to provide a de
Yet a further object of the invention is to provide means
vice for the purpose described which >is sturdy and durable
for wrapping twine spirally from each- end of a bale to
in construction, reliable and eñicient in operation, and
its center for providing a more tightly and uniformly
relatively simple and inexpensive to manufacture, as
wrapped bale.
semble and utilize.
Yet a further object of the invention is to increase the
Other and still further objects and advantages of the
capacity of the baler ’oy reducing the time of wrapping
invention will become apparent from the following detailed
the bale, by avoiding interruptions, and by providing a 50 description of a preferred embodiment thereof.
more dependable machine.
This application is a continuation of the applicant’s co,
Yet another object of the invention is to provide a
pending patent aplication Serial No. 212,005, filed Feb
machine which is adapted to make bales with both ends
ruary 21, 1951, now abandoned.
securely wrapped rather than bales which are more loosely
In the drawings:
wrapped on one end than on the other, as in the prior art.
FIGURE l is a side view of the new improved mecha
55
Another object of the invention is to provide a rack bar
nism. The dotted line portion relates to what has already
mechanism for transferring motion to the string guiding
been patented. The string tubes are not shown in this
tubes.
view.
Yet another object of the invention is to provide a lock
FÍGURE 2 is a front view of the new mechanism, with
mechanism for maintaining the tube-elevating mechanism 60 certain parts broken away.
in operation and trip means for releasing said lock means
FIGURE 3 is >a portion of the string tubes taken along
at proper times.
the line 3_3 of FIGURE 2.
Still a further object of the invention is to provide a
FIGURE 4 is a side view of the wrapping control
more eñicient and more certainly operating string-cutting
mechanism.
mechanism and one in which the string is caused to be
FÉGURE 5 is a front view of the wrapping control
drawn taut during longitudinal and transverse travel over 65 mechanism.
a cutting edge which is inclinedly disposed with respect to
FIGURE 6 is a view-in-section taken along the line
both transverse and longitudinal movements of said
6_6 of FIGURE 4.
`
string.
FIGURE 7 is a view-in-section taken along the line
Another object is to provide centrally located knives
7_7 of FIGURE 4.
disposed in V-shaped position, each approximately at a 70 FIGURE 8 is a view-in-section taken along the line
45-degree angle with respect to the direction of transverse
S-ä of FIGURE 4.
3,064,556
FIGURE 9 is a top View of the baling belt and feed
roll shields.
FIGURE 10 is a front view ofthe upper portion of the
string tubes.
FIGURE l1 is a right end view of the parts of FIG
URE 10.
»
‘FIGURE 12 is a detailed top View of the cutting device.
FIGURE 13 is a detailed front View of the cutting
4
will continue with a description of other parts shown -în
the previous patents.
The machine includes an upper belt 90 which travels in
the direction of arrows 92 about rollers 96, 98, and 100.
The roller 160 is disposed upon an upper tension-roller
arm 110 and the latter is pivotally secured to the frame
member 18 by a pin 112. The roller 9S shall be referred
to as the upper drive roller.
The reader is referred to the previous patents for fur
device.
FIGURE 14 is a detailed end view of the cutting device. 10 ther description of those parts shown in dotted lines. A
very brief description of the operation of the parts shown
FIGURE 15 is a view-in-section taken along the line
15-15 of FIGURE 16.
FIGURE 16 is a side view of the bale size control
mechanism.
>
in dotted lines will suffice here.
Briefly, the hay feeds upwardly from the conveyor 40
and is compressed into a mat between a compressing or
feed roller 130 and the roller 48. The compression is reg
ulated by a spring mechanism 132. It will be understood
that as the roll 84 is formed by the oppositely moving belts
FIGURE 18 shows a detailed view of the timing device.
70 and 9G, the'roll enlarges and the trip rollers 80 and
FIGURE 19 is a view-in-section taken along the line
96 move from positions closely adjacent the rollers 48 and
19-19 of FIGURE 17.
20 9S to positions more toward the right hand side of the
FIGURE 20 is a front view of the friction clutch.
machine as shown in FIGURE l.
FIGURE 21 is a sectional view of the friction clutch
When the roll nears its predetermined size, the string
taken along the line 21-21 of FIGURE 20.
is wrapped spirally from one end to the other about the roll
FIGURE 22 is a vieW-in-section taken along the line
by mechanisms to be later described.
22~-22 of FIGURE 2l.
As seen in FIGURE 1, the trip rollers 86 and 96 are
FIGURE 23 is a side elevation of the friction clutch 25
then caused to spread apart and move in the arcuate paths
of FIGURE 20.
toward the left hand side of the machine and around the
FIGURE 24 is a detailed layout view of one of the
circumference of the bale 84 to their original position.
inclined lugs of the clutch, the view representing 360 de
The bale is thus discharged out of the right hand side of
grees along the opposing clutch faces.
The rotary baler improvements of this invention are 30 the machine.
FIGURE 17 is a front’view of the bale size control
mechanism.
particularly adapted for employment in the rotary baler
described in the applicant’s previous patent application
“Rotary Baler,” issued December 14, 1943, Patent No.
2,336,491.
It will be seen that the belt 90 is in a concave shape
between the rollers 96 and 98 and that the belt 70 has a
concave shape between the roller 89 and the drum 48
whereby these concave portions of the belts 71) and 90
In the drawings, those parts of the baler which are old 35 define a cylindrical bale wrapping area disposed inwardly
of and adjacent to a later described horizontal elongated
are shown in dotted lines and are described only briefly
feeding throat disposed beneath the feed roller 130 and
here. For more particular description, the reader is re
the drum 48, whereby the bale wrapping area so deñued
ferred to the above described patent. The new parts dis
closed by this invention are shown, together with the
frame of the machine, in full lines.
Referring to FIGURE 1, the baler of this invention
includes a frame generally indicated at 10 and having
upright back members 12, horizontal bottom frame mem
bers 14, horizontal top frame members 14, horizontall
top frame members 16, and transverse bracing members 45
18.
has in a sense a horizontal axis.
The mechanisms of this invention, will now be de
scribed.
The string-applying mechanism of this invention in
cludes two string tubes 150, best seen in FIGURE 2.
It will be understood that in previous patents a single
string tube has been employed. The string tubes 150
are adapted to receive strings 154 therethrough. Ends
of the strings 154 normally hang downwardly from the
The frame is provided with an axle housing 19, shown
free ends of the tubes 150, as seen in FIGURE 2, for en
in FIGURE 1, having an aXle 20 indicated in dotted lines.
gagement in and the wrapping of a hay bale as later de
The axle 20 is for the purpose of supporting wheels indi
cated at 22. A towing tongue 23 is secured to the axle 50 scribed. The strings 154 come from any suitable source
of supply to the rollers 158 through guide members 160
housing 19 by means of a bolt 24 and brackets 26.
mounted on a horizontal frame member 164. The rollers
Referring to FIGURE 1, a conveyor, generally indi
158 are secured by pins 159 between ears 161 which lat
cated at 40, is there shown in dotted lines and includes
ter are secured to their respective twine chutes 150. '
a conveyor belt 42 having ñights 44 for conveying hay
Each tube 150 is provided with an ear 166 and 16S,
upwardly toward the left hand side of the baler. The 55
respectively, and the latter are pivotally secured by means
baler further includes a roller 48 attached to a driving
of pins 170 to a horizontal frame member 174 which latter
pulley 50 by means of a shaft 52 and a clutch mechanism
is spaced downwardly from the frame member 164.
later described and including a notch-wheel 53. The
As later described in greater detail, the string tubes 150
pulley 50 is drivably secured by means of a belt 54 to a
pulley 56, which latter is disposed on the upper end shaft 60 move from the vertical positions, shown in dotted lines in
FIGURE 2, inwardly towardfeach other along the arcuate
60 of the conveyor belt 42. The conveyor belt 42 is
paths indicated in dotted lines at 180 in FIGURE 2 for
driven by Vthe pulley 52 at times later described.
spirally wrapping a revolving bale first at the outer ends
A belt, or series of side-by-side spaced apart belts, 70
thereof and then gradually to the center thereof.
are disposed around the drum 48 and also around a trip
roller 72 shown in dotted lines on the right hand side of 65 YThe movement of the tubes 150 is synchronized by a
mechanism nowV to be described. Such mechanism in
FIGURE 1. The trip roller 72 is mounted upon a lower
cludes a rod 190 pivotally secured to the ear 166 by a
tension-roller-arm 74 and the latter extends to the left
pin 192 and being pivotally secured to the ear 168 at its
hand side of the machine in a manner later described.
other end by a pin 194. The pin 192 is on the normal
The belt 70 travels in the direction of the arrows 76 70 ly upper side of the pivot 170 of the ear~ 166, whereas
and is disposed about a further trip roller S0. Between
the pin 194 is on the normally lower side of the pivot
the rollers 48 and 80 the belt is pressed downwardly, at
170 of the ear 16S.
times, in a concave shape by a roll, indicated in dotted
The tubesv 159 are causedto swing outwardly part y
lines at S4.
under the action of an elongated tension spring 200 and
The above described parts are all old in the art and we 75 partly by gravity: gravity alone is sufficient,A however`
5
6
The spring 266 is secured to the horizontal frame member
lever 420 is pivotally secured by means of another pivot
.l74 by means of a rod 202 at any one of a plurality of
pin 430 in its central portion to a frame member 450.
The frame member 450 is attached at its upper end to
spaced apart apertures 204. The opposite or right hand
end of the spring 2&6, as seen in FIGURE 2, is pivotally
secured by means of a rod 206 and bolt 26€ to an ear
21@ secured to the right hand tube 150 at a point normal
ly disposed upwardly from the pivot point 170 of the ear
168.
Referring to FIGURE 2, a rod 256 is pivotally secured
to the left hand ear 166 by means of a pin 254 on the
the upper frame member 16 and extends downwardly
therefrom, and is secured in any suitable manner, not
shown, to the frame member 410 at its lower end.
The opposite end of the raising lever 42u is secured
to a coiled tension spring 466 by bolt 462, and the spring
extends downwardly to and is secured by bolt 464 to
the outer end of a trip lever 479» adapted to rotate about
outer side of the pivot 176l »from the pivot 122, where
a pivot pin 472, which latter is centrally disposed along
by downward movement of the rod 259 will cause
the lever 47 0. The inner end of the lever 470 is disposed
counter-clockwise movement of the ear 166.
in a position so as to be engaged «by a bolt 480, which
is disposed on the outer end of a nib 484. The nib 484
is secured to the right hand ear 16S in a position on the
The lower end of the rod 256 is pivotally secured by
means of a pin 258 to a selected one of a plurality of
apertures 269 in the left hand end of a lever or beam
opposite side of the corresponding string tube 150 from
Silit. The beam 30() extends from the right to the left
hand side of the machine, as shown in FIGURE 2, and
is adapted to pivot at a point between its ends on a iit
the pivot pin 170 of the ear 16S.
It will be seen that as the right hand string tube 150
bolts 312 are secured together by means of a pair of
straps 314 disposed one on each side of the lever 360.
The lower bolt 312 functions as a fulcrum for the lever
369, whereby the upper bolt 312 is disposed in a selected
ber 383, to cause engagement of the rack bar 350` with
the cog 390.
A lock lever 56€) is provided and is secured by means
of a pin 502 to the frame member 450. The lock lever
one of a row of notches 320 in an elongated stationary
5611? extends outwardly from the pin 502 alongside the
raising lever 42€?. The raising lever 42€]y is` provided
swings downwardly, its bolt 480 will cause the trip lever
ting 316.
20 476 to pivot in a clockwise direction, as shown in FIG
The fitting 316 is provided with two bolts 312 extend
URE 2, and that this will pull downwardly on the spring
ing therethrough above and below the lever 30%. The
46d and raising lever 420, for raising the carrying mem
member 322 by removing the upper bolt 312 to shift the
fitting 310 then replacing the bolt 312 in a different se
with a bolt Stìó secured to the spring 469 end thereof by
lected notch. The member 322 is secured in any suitable 30 means of a transverse portion 510 of the lever 420, which
manner to an upright frame member 336 at the left end
portion extends upwardly therefrom for carrying the
thereof and is secured to the frame member 174 at the
substantially horizontally disposed bolt S96.
right end thereof by means of a connecting piece 349,
indicated in dotted lines in FIGURE 2.
The notched member 322 extends at a slant down
wardly to its left hand end from its upper right hand
end. The right hand end of the lever 306 is attached to
The bolt 506' is threadedly secured to the portion 516
and is locked in place by a lock nut 512. The bolt 506
35 is disposed on the other side of the spring 460 from
the pivot pin 4343, and the end of 4the =bolt 596 extends
inwardly of the carrying lever 42€) for engagement with
t‘ne upper end of an elongated rack bar member 356 by
the adjacent outer end of the lock lever 596 at times. It
means of a bolt 352 and the rack bar member 350 is pro
will be seen that when tbe raising lever 420 is pulled
vided with a row of notches, some of which are indicated 40 downwardly on its left hand end, as seen in FIGURE 4,
at 369 in FIGURE 4.
the lock lever 566 can drop into position by counter
The notches 369 extend in a row on the forward side
clockwise pivoting for engaging the bolt 506 to prevent
of the rack bar 35% continuously between those notches
clockwise rotation of the raising lever 420.
shown in full lines in FIGURE 4 for purposes of illus
Means are provided for causing the lock lever to be
tration. The rack bar 350 is provided with a guide 376
dis-engaged from this position, and such means includes
extending around its forward side and the guide 370 is
a ramming member 520, which is secured to the raising
secured to the lower end of a rack bar carrying member
lever 420 by means of a bolt 524. The ramming mem
389. The carrying member 356 is provided with a roller
ber 520 is disposed extending upwardly and down
382 secured to its lower end by means oi a pin 334. The
wardly, and its lower end is adapted to be engaged by
roller 382 is disposed engaging the rearward side of the 50 the right hand end of the lever 300 at times when the
rack bar 350, whereby the rack bar 354) is free to move
said right hand end swings upwardly.
upwardly and downwardly with respect to the connecting
The ramming member 520 is provided with a longitu
member 381).
dinal slot 53% therein for receiving the shank of the bolt
The purpose of the notches 36d and the teeth there
524. ‘It will be seen that when the right hand end of the
between is to engage a cog 390, partially shown in full 55 lever 30% moves the ramming member 52€) upwardly, the
lines in FIGURE 4, whereby the cog 390 at times causes
latter will strike a pin 54%) disposed in the lock member
the rack bar 350 to move upwardly, as later described.
The carrying member 380 is provided with a slot 409
therethrough and disposed extending at an inclination
with respect to the length of the elongated member 386
in a manner whereby the upper end of the slot is dis
posed closer to the rack 350 than the lower end of the
slot 400.
As best seen in FIGURE 4 a bolt 492 is disposed
through the slot 499 and has a nut 496 on its outer end
of a greater size than the slot 409. 'Ihe inner end of the
bolt 402 is secured in any suitable manner to a frame
member 419, which latter extends toward the conveyor
40 at one end, and has its other end secured to the said
frame member 18, as shown in FIGURE l. It will be
seen that when the carrying member 380 is raised, the
rack bar 350 will engage the cog 390.
The carrying member 389 is attached at its upper end
to a raising lever 429 by means of a pivot pin 422. The
5% for ramming the pin 549 to force the lock lever Süß
upwardly and out of engagement with the bolt 566. A
pin 559 is provided extending outwardly from a similar
frame member 560 for slidably engaging the ramming
member 52@ to hold the latter in place.
The frame member 56€) is attached to the frame mem
er 45d in any suitable manner.
As best seen in FIGURE 4, the cog 39d is disposed on
a shaft dill) which is rotatably mounted in a frame mem
ber 632, which latter is itself secured to the frame mem
ber 410. The shaft 66@ is further secured to a pinion 610
partially shown in dotted lines in FIGURE 4 and shown
0 in full lines in FIGURE 2. The pinion 610 is itself
drivably secured to a second cog 62€? disposed on a shaft
622, which shaft is drivably secured to a previously de
scribed roller 98.
The shaft 622 can be seen in FIGURE 7 and also in
pin 422 is disposed at one end of the lever 420. The 75 the approximate center of FIGURE 1, with the cog 629
3,064,556
secured thereto. The shaft 622 is the shaft'of the roller
98, previously described and is constantly in rotation.
The roller 72 moves upwardly as the bale grows larger.
This causes the tension arm 74 to rotate counterclock
wise about a pin 719 which is mounted on a frame brace
the baling rollers which drive the Ybaling belts and these
belts are moving all the time.
The clutch mechanism holds the conveyor from re~
versing direction and permitting hay or straw from seep
ing between the conveyor pick up and the ground. An
other function is that the clutch mechanism will pro
vide a safety slip in case a rock or stick gets caught in
web 719', the pin 719 functioning as a pivot similarly to
the pivot pin 46 in FIGURE l of Patent No. 2,096,990.
the conveyor.
.
.
An elongated connector bar 710 is fixed to the left-hand
As best seen in FIGURE 2l, secured on the shaft 52.'
end of the tension arm 74 and the connector bar 718 is
itself secured at its left end by a pivot pin 714 to an 10 by the keys 811 are two annular cylinders 812 and 814.
Also secured to the two members 812 and 814 by rivets
upright member 720. The member 720 is in turn securedv
816 are two spring steel discs 818 and 828, respectively.
pivotally to an upwardly extending sliding bar 738 by a
Thus these spring steel discs rotate at all times. Also it
cotter pin 724.
t
will be noted that the notch wheel 53 and the chain cog
As' liest seen in FIGURE 16, the pin 724 is pivotally
58 are permitted to rotate around the shaft 52 with a
secured at its' lower end to the frame member 18 by
means of a bracket 748 and a bolt 758.
A U-shaped
bracket 752 is attached to the frame member 18 by bolts
754'.
On the right hand side of the member 740, as seen in
FIGURE 15, is a spacing block 768 and a guide hook 762
secured to the bracket 752 by the bolts 754. The hook
762 is disposed around and slidably receives the elongated
upright bar 730.
The bar 738 has a lug 766 protruding outwardly there
close tolerance provided.
The clutch is in two halves, one face portion 822 secured
to or being an integral part of the notch wheel 53 and
the other portion 824 being secured to or being an integral
part of the chain cog 58. The clutch portions are similar
and face portions thereof are best shown in FIGURE 24.
Each clutch portion is provided with alternate surfaces 826
and high surfaces 828. Also sloping surfaces 838 and
831, respectively, are provided between high and low
from on one side thereof for engagement with the lower 25 surfaces on each half. Also provided are stop lug sur
faces 832 and 834. The surfaces 832 and 834 are dis
one of two nibs 768 and 769 respectively opposite a latch
posed at a right angle to the shaft 52 and are on either
member 770.
side of the highest surfaces 828 of the portion 822 pro
The member 778 has two arms 772 extending upwardlyviding
stop lugs.
and downwardly from one side thereof, each having one
The surfaces 834 join the surfaces 828 and 830 of half
nib 768 and 769. Opposite the arms 772 is a latch-hook 30
822 and are of lesser depth than the surfaces 832 which
portion 780 of the member 770 for engaging a conveyor
motion arresting notch wheel 53 later described.
latter join the surfaces 826 and 828.
'
The half portion 824 has surfaces 832’ and 834’ which
are also disposed transversely with respect to the shaft
pivotally mounted on the U-shaped bracket 752 by means
of a bolt 784 and nut 786. The latch member 770 is 35 52. The surfaces 832’ join surfaces 826 and 828 of half
portion 824 and are of greater depth than the surfaces
provided with a push-linkage ’790 pivotally disposed in a
834’ which join surfaces 826 and 831 of half portion 824.
recess therein and extending outwardly from that side
The inclined surfaces 831 of the half 824 join directly
thereof which is opposite the hook 788. The linkage ’798
As best seen in FIGURE l5, the latch member 770 is
with the surfaces 828 of the half 824 and incline inward
40 ly therefrom to the surfaces 834’.
FIGURE 16.
The inclined surfaces 838 of half 824 join directly with
As best seen in FIGURES 16 and 18, the socket 792 is
the surfaces 828 of the half 824 and incline inwardly
disposed on the free end of a tension spring 794 which
therefrom to the surfaces 834’.
is secured by a screw 796 and a spacing member 797 to
The inclined surfaces 830 of ha-lf 822 join surfaces
a vertical sliding bar 800. The latter is slidably secured
834 thereof with other surfaces 835 which are parallel
to the U-shaped bracket 752.
to the surfaces 832 and 834 of half 822 and are of lesser
The upper nib 768 is disposed in a position to be
depth than surfaces 832 and 834. The surfaces 83S inter
engaged by the upper end of the bar 728 when the latter
connect low surfaces 826 of half V822 and surfaces 830
moves upwardly, thus releasing the hook 780. The lower
thereof.
nib ’769 is in a position for engagement with the lower
A cylindrical plate 836 is abutted against the outside
eind of the lug 766 whereby downward movement of the 50
end of the member 814 and held in place by the washer
members 720 and 730 will cause the hook 780 to engage
is received in a socket 792 at its other end as seen in
the Vlater described notch wheel.
The position of the spring 794 can be regulated by
838 and a bolt 840. 'Ihe bolt 840 has a line thread en
gaged with a threaded hole 841 in the shaft 52 so that the
accurate adjustment may be made as later described. A
The bracket 752 and the
adjacent side of the frame member 18 have registering 55 space 841’ exists between an inner end or boss portion
842 of the plate 836 and the shaft 52. The boss portion
slots therethrough, as shown in dotted lines at '798' and 792
824 is slidable on the shaft 52.
iu FIGURE 18.
Referring to FIGURE 1, the latch member 770 and
A lug 799 is vertically slidable in the slots 798 and
notch wheel 53 are there shown in a disengaged position.
792 and is secured to the vertically sliding har 880. The
other end of the lug 799 is received in a notch 798 at one 60 In this position motion is not transferred from the shaft
52 through the notch wheel 53 to the cog 50.
end of a pivoting adjusting lever 881. The lever 881 is
When formation of the bale begins, the hook 780 is in
pivotally secured at its center to the frame member18 by
a position disengaged from the notch wheel teeth 844’.
a bolt 804. By striking the lever 881 the position of the
The wheel 53 is then free to rotate in the direction of the
lug 799 can be moved vertically to change the position of
65 arrow 844. This causes the inclined surfaces 830 of the
the socket 792'
portion 822 to engage the surfaces 831 of the portion
The mechanism shown in FIGURES 20 to 24 relates to
824. The surfaces 830 and 831 jam against each other
the safety clutch device employed on the rotary hay baler.
tightly because at this point the wheel is in motion while
This clutch is necessary for a number of reasons. After
the hook 780 engages in the notch wheel 53 the chain 70 the cog 50 is standing still.
This jamming of the surfaces 830 and 831 forces the
cog wheel 50 will discontinue to rotate, as later described,
wheels 50 and 53 apart until they press against the fric-causing the conveyor 42 to stop whereby hay or straw
tion rings 845 which in turn press against the disks 818
will not flow into the hailing belts.
and 820. While space is seen between the surfaces 830
However, the shaft 52, that the clutch device is secured
on, always rotates, because also on that same shaft are 75 and 831 in FIGURE 21 yet these surfaces are engaged
means now to be described.
3,064,556
10
and wedge against each other when the notch wheel 53
is held back by the hook 780.
Motion is thus transferred from the shaft 52, through
the disk 810, through the friction ring v845 to the notch
wheel 53 and from the notch wheel surface 830 to the
cog surface 831.
When the bale reaches a desired size, the hook 780
engages the notch wheel 53 as previously described. This
arrests motion of the wheel 53 while the cog 50 still ro~
tates in the direction of the arrow 344. `This separates 10
the surfaces 330 and S31 whereby the wheels 50 and 53
The bar 970 is provided with a seat engaging lug 980
at its upper end which latter is secured to the bar 970
and extends outwardly therefrom in a transverse direc
’tion thereto. The uppermost end of the bar 970 is pro
vided with a bearing sleeve 982 disposed thereon and
secured thereto between two threadedly mounted nuts
904.
Between the nuts 984 and the sleeve 982 are two
stop washers 986. An apertured ear 990 is slidably dis
posed aroundthe sleeve 982. The ear 990 is rigidly se
cured to the member 560.
As best seen in FIGURES 4 and 5, a spring 1000 is
disposed secured to the member 560 by a bolt 1002 and
is also secured to the seat member 930 adjacent the rod
are permitted to move towards each other as the lugs
828 sink into the deepest parts of the clutch portion 824.
When the wheels 50 and 53 come closer to each other,
970 by means of a bolt 1004.
the wheel 53 disengages the friction ring 845 and ceases 15
The spring 1000 holds the seat 930 in its notch 1008,
best seen in FIGURE 5 partially in dotted lines, the
veyor then stops, as is desired, and unwanted hay is not
notch 1003 being in a seat member 1010, the latter
delivered to the rolls.
being best seen in FIGURE 4. The seat member 1010
The clutch can be adjusted by turning the set screw
is secured to the rack bar 350 by the bolt 352. The bolt
340. The latter holds the clutch portion 824 closerto 20 352 has a sleeve 1011 around it and between the bolt
or farther from the clutch portion 822.
352 and the seat 1010 and the lever 300 which is also
Means are provided by this invention for severing the
secured to the rack bar 350 by the bolt 352.
wrapping twine at the end of wrapping motion of string
The lowermost end of the bar 970 is provided with a
tubes 150. Such means includes a string cutting member
transversely disposed portion 1020, best seen in FIGURE
25 17 . The portion 1020 is provided with a flattened upper
900, best seen in FIG. 13.
The member 900 is preferably formed in two portions
end surface 1022 for the purpose of being engaged by
902 and 904. Each of the latter have a cutting edge 906
a catch 1028, which latter is pivotally secured by means
and 908 respectively. The edges 906 and 900 are in
of a bolt 1030 to the sliding bar 730 at a point on the
clinedly disposed with respect to the direction of move
bar 730 disposed above the lug 766.
ment of each string transversely of itself and are also 30
As best seen in FIGURE 16, the catch 1020 has a large
iuclinedly disposed with respect to the direction of longi
hole 1032 therethrough at its lower end. The purpose
tudinal movement of the strings. It was previously de
of the hole 2.032 is to receive a much smaller diametered
scribed that the string each moved longitudinally of itself
pin 1034 anchored in the sliding bar ‘730.
during wrapping.
As thus described the catch 1028 is adapted to pivot
Those forward points 912 on the cutting edges which
slightly and sufficiently for a lower corner to strike the
are ñrst engaged by the strings during wrapping are dis
flat surface 1022 of the rod 970. The hole 1032 is sutil
posed less far in the direction of longitudinal motion of
ciently large to also permit the catch 1023 to move
the string than those portions of the cutting edges which
within the adjacent plane of the sliding bar 1020, at
are subsequently engaged -by the string before breakage
times, so that when the bar 730 moves upwardly the
40
of the string.
catch 1020 will strike the lower side of the bar portion
rThose points 912 on said edges which are ñrst engaged
1020, move toward the sliding bar 730, and permit up
by the string are disposed farther in the direction of
ward movement of the bar 730.
transverse motion of each respective string than those
The lower end of the bar 970 is slidably mounted in
portions of each cutting edge which are subsequently en
a bracket 1040 as best seen in FIGURES 2 and 16.
to receive motion from the disk member 818. The con
gaged by the strings before breakage thereof.
The above paragraphs have defined the cutting edges
As best seen in FEGURE 4 lug 1030' is secured to the
rack bar 350 adjacent its upper end, The lug 1030’ is
in relation to the string. In relation to the frame of the
adapted to engage the underside of a tripping ever 1032’
machine the cutting edges 906 and 90S are inclined up
and to raise one end of the lever upward. The other
wardly and rearwardly and are secured to an inverted
end of the lever is pivotally secured at 1034 to a ver
T shaped member 920 which is itself secured to a frame
tically extending frame member 1036.
member 922 of the machine.
A vertically extending bar 1038 is pivotally secured
The upper end of the member 920 has a rearwardly
at 1040 to the tripping lever 1032' between the lug en
projecting ear 926, through which latter a shaft 930 is
gaging end thereof and the pivot point 1034.
rotatably disposed. The shaft 930 is secured to the ear
The bar 1038 is the equivalent of the reach rod 77 in
926 by a cotter pin 932. The shaft 930 is horizontally 55 the Patent No. 2,096,990 and so as explained in that
disposed a-nd has an annular end portion 940 of a cutting
patent, when the reach rod 77 (and in this machine num
edge cover member 942 secured thereto.
ber 1033) is raised upwardly it sets off a mechanism,
The member 942 is provided with an outwardly and
not shown, to release the bale from the baling belts.
rearwardly extending portion 946 having outwardly and
rearwardly inclined edges complementally shaped with
respect to the cutting edges 906 and 908. The construc
tion is such that at times when the cover member is in a
The opposite end of the lever 1032 extends outwardly,
60 as best seen in FIGURE l, to provide means whereby
the operator can use his hand to manually trip the bale
releasing mechanism.
down position the string will be held away from the edges
As best seen in FIGURES 2 and 9, the machine is pro
906 and 908 by the overlapping of the larger cover por
vided with a bar 1050 which forms a part of the frame
tion 946. At times when the shaft 930 is rotated the 65 thereof. The bar 1050 extends transversely of the frame
cover will raise, permitting the strings to engage and be
rearwardly of the swinging twine tubes 150. Another bar
cut by the cutting edges 906 and 908.
1054 is provided spaced apart from a bar 1050 and
The shaft 930 extends transversely of the machine and
ldisposed on the opposite side of the twine tube 150 from
is rotatably mounted thereon by means of bearing block
the bar 1050.
950 and ear 925 as seen in FIGURES l and 2. On the 70
The bar 1054 is provided with offset end portions 1056
outer side of the block 950 the shaft is provided with an
which attach it to the frame bar 1050. At the center of
oífset portion 952 which latter is disposed between the
the bar 1054 the bar is provided with an offset arcuate
arms of a bifurcated ñtting 958. The latter is best seen
in FIGURES 4 and 5. The fitting 958 is secured by
means of a set screw 960 to a vertical bar 970.
portion, as best seen at the center of the lower sîie of
FIGURE 9, extending outwardly around the cutting knife
75 mechanism previously described.
3,064,556
11
The ends of the bar 1054 hold the'string tube 150
from 'swinging too far outwardly. The bar 1054 also
-serves as support for shield means now t0_ be described.
A shield 1060 extends transversely across the machine
12
to move downwardly,`thus :permitting the catch 1028
to come in contact with the bar >970.
It will be seen that striking the adjustment member 801
with a hammer will raise and lower the sliding bar 780,
top of FIGURE 18, and thus adjust the center line of
the spring wire 790, the said center line being seen in
dotted lines in FIGURE 18 at 1091.
and is secured behind the bar 1054. The shield 1060
extends downwardly on the rearward side of and closely
adjacent to the feed roller 130. The purpose of the
` During the action described in the above iive para
shield 1060 is to prevent twine from the tubes from be
graphs the friction clutch shown in FIGURES 20 to 24,
coming entangled with the lfeed roller 130.
An upwardly extending guard 1062 is secured to the 10 prevents the conveyor from running in an opposite di
rection.
front side of the bar 1054 and is provided with an arcuate
In the above sequence when the lug 980 is unseated
center portion curved in similar manner to the bar 1054.
the spring 1000 pulls upwardly on the rod 970. This
The upwardly extending guard 1062 is best seen in FIG
upward movement of the rod 970 causes the bifurcated
URE 1 and is for the dual purpose of preventing wrap
ping twine from becoming entangled with the feed roller 15 íitting 95S to push upwardly on the oiîset portion 952 of
vthe rod 930.
130 and for preventing hay from the conveyor 40 from
As best seen 'in FIGURE 13, the rotation of the rod or
>becoming entangled with the baling belts 90 and associ
shaft 930 will cause the cover portion 942 of the knife
ated parts.
mechanism to swing upwardly at its outer end permitting
Ony the rearward side of the bar 1050 a shield 1064 is
provided. The shield 1064 hangs downward in front of 20 the twine to engage the cutting edges of the knife blade.
It will be seen that the bifurcated fitting 958 fits loosely
the roller 98 above the feed throat of the machine. It
about the offset portion 952 of the shaft 930. This is
is for the purpose of preventing hay from catching on
so that the falling of the rod 970 will have a delaying
the roller 98 and from traveling upwardly with the
effect upon the shaft 930. This delay will permit the
belts 92.
A summary of the operation of the new parts of the 25 twine to wrap around the bale several times in the same
vertical plane whereby the twine has a chance to bind
baler will now be given, particular reference being had
upon itself for tying the bale before the twine cutting
to FIGURES 1 and 2. When hay enters a baler from
mechanism goes into operation.
.the conveyor 40 it is compressed by the feed roller 130.
The dropping of the rack bar 350 permits the string
The hay_then passes to the feed throat of the machine,
that is, between the rollers 48 and 98. The baling belts 30 tubes 150 to drop downwardly and outwardly whereby the
screw 430, best seen in FIGURE 10, bumps the lever 470.
70 and 90 gradually spread apart permitting the hay to
This pulls downwardly on the spring 460, which latter,
Vbe rolled into a large bale S4, shown in dotted lines in
as best seen `in FIGURE 4, pulls downwardly the lever 420
FIGURE l. When the bale 84 has reached a predeter
permitting the lock lever 500 to fall into place against the
mined maximum diameter the member 710, Vas shown in
FIGURE 1, will pivot in counterclockwise directions 35 bolt 506. This holds the lever 420 downwardly at one
end, its other end holding upwardly the rack bar carry
Awhereby the connector bar 710 pulls downwardly on the
upright member 720 and »downwardly upon the sliding
ing member 380.
aperture while for hay it would probably require a dif
ferent aperture.
The changingY of the position of the cotter pin 724 alters
the distance between the lugs 766 and 769. Thus the
time lapse before contact is made between these lugs is
changeable, and therefore the size of the bales is ad
upwardly causing the simultaneous upward swinging of
from entering the feed throat.
At the time the lug 766 engages the pin 769 the catch
1023 strikes the lower end 1020 of the bar 970 causing
lever 300 forces the ramming member 520 upwardly, the
ramming member 520 striking the pin 540 causing the lock
spaced apart from the lower end 1020 ofthe bar 970,
the pin 540.
The raising lever 420 is then permitted to rotate clock
When the carrying member 380 is held upwardly the
bar 730 which is attached to the upright member 720.
sides of the inclined slot 400 thereof engage the bolt
It is to be mentioned that the cotter pin 724 is piv
otally secured into any one of the apertures 734 in ac 40 402 forcing the carrying member 330 toward the cog 390
and maintaining the rackbar 350 in engagement with the 4
cordance with the material being baled. The cotter pin
cog 390.
.
is set once and is usually left that way. For instance,
The turning of the cog causes the rack bar to move
when alfalfa is being baled the cotter pin will be in one
the twine tubes 150. The operation of the fulcrum mecha
nism, including the fitting 310, bolts 312, and notches
320 will now be explained.
The placement of the fitting 310 so that the upper bolt
312 is in a desired one of the notches 320 will determine
50 the amount of string that is to be wound on a bale. Also
justable and changeable.
the action of the fulcrum mechanism provides a means
The lug 766 on the sliding bar 730 then comes into
of winding the twine a few times in the same vertical plane
contact _with the lower pin 769 of the latch mechanism
at the start of wrapping whereby the string binds on itself
770. Upon such contact the latch member 770 is caused
so as not to come loose.
to rotate and the hook 780 engages the notch wheel 53,
The string tubes 150 will continue to rise until the
thus stopping the conveyor and preventing any more hay 55
lever 500 to disengage the bolt 506. It will be seen that
the bolt 524 which secures the ramming member 520
the bar 970 to rotate and unseat the lug 980. The rack
60 is disposed in an elongated slot, theslength of the slot
bar 350 is then free to drop and does s0.
permitting the ramming member to move upwardly against
It should be mentioned that the catch 1023 is purposely
as best seen in FIGURES 16 and 17, to provide a time
wisev as shown in FIGURE 4, whereby the rack bar carry
the conveyor to enter the baling belts before the string 65 ing member 380 will drop backwardly away from the rack
bar 350 as it drops downwardly, this being caused by the
starts to bind the bale.
inclined-side of the slot 400. When the lever 300 moves
Notice also that the hook 780 engages the notch wheel
upwardly the seat piece 1010 moves with it.
53 4before the catch 1028 strikes the bar 970. Thus
As seen in FIGURE 4, the lock lever 500 holds the left
the downward movement of the bar 730, FIGURE 16, 70
hand end of the lever 420 downward. This pulls upwardly
is dependent on hay entering the feeding throat and is
on the right hand end of the lever 420, raising the rack
not dependent upon the conveyor.
bar carrying member 380.
`In other words, the conveyor may stop, but due to in
Because of the inclined walls of the slot 400 in the
terwoven hay Ybeingpulled in even after the conveyor
"stops,"the` bale still grows and the bar 730 still continues 75 rack bar carrying member 380, the carrying member
lapse. This time lapse permits any interwoven hay on
3,064,556
13
330 moves toward the pinion 390 holding the rack bar
359 in engagement therewith.
The pinion 39€) rotates in a counterclockwise direction
as seen in FIGURE 4 causing the right hand end of the
lever 366, as the latter is seen in FIGURE 2, to raise.
This in turn causes upward movement of the string tubes
150.
When the rack bar 359 reaches the upper end of its
travel, the lug 163@ will strike the tripping lever 1G32,
ld
twine about the bale; a rotating pinion; a movable elon
gated rack bar adapted to engage said pinion and to be
moved thereby in one direction longitudinally of said
rack bar, connecting means operably connecting said rack
bar and said twine guides such that when said rack bar
is moved in said direction, said twine guides return to
their original positions; a guide member for said rack,
said guide member having a movement transversely of
Said rack so that when moved in one direction it causes
as best seen in ÈGURE 4, this pulls upwardly on a 10 said rack to be in mesh with said pinion and so that when
downwardly extending bar 1938 which, as before ex
moved in an opposite direction it causes the disengage
lained, sets oí a mechanism, not shown, which releases
ment of said rack from said pinion; means for causing
the bale from the baling belt, causing the bale to be
said twine guides to move from original rest positions
squeezed outwardly of the machine to the right as seen
to initial wrapping positions when the bale in said ma
in FIGURE l.
15 chine has reached a predetermined diameter; means re
As the bale is discharged the member ’726 moves up
sponsive to the movement of the twine guides to said
wardly, striking the lug 769 for causing the disengagement
initial wrapping positions for moving said guide member
of the hook ’786 from the notch wheel 5S.
into position for causing meshing of said rack and pinion
When the hook releases the notch wheel 53 the con
and movement of said rack bar in said one direction to
veyor starts and the process of baling is repeated in an 20 cause said connecting means to return said twine guides
identical manner.
to their original positions; automatic means for locking
As best seen in FiGURE 3, the string tubes are each
said rack in said meshed position with Said pinion during
provided with a slot i636 longitudinally disposed along
said return movement of said guide; and automatic means
the upper sides thereof, only one of the slots being shown
in FIGURE 3. The slots are for the purpose of making
it easier for the operator to place the twin into the tube.
Each tube is substantially of an oval shape but is provided
with «a iiat inner surface w82 on its lower side whereby
the twine is not worn as much during travel through
the tubes as would otherwise be the case.
This invention has provided certain improvements in
rotary hay baling machines, which make possible: the
for unlocking said locking means and causing disengage
ment of said rack from said pinion -when said Wrapping
is completed.
3. In a rotary baling machine having means for rotating
a bale about an approximately horizontal axis and having
«a part automatically movable to a certain position respon
30 sive to the growth of a bale of material to a predetermined
size, the following: two string guide members having
string inlet ends and outlet ends; means for delivering
elimination of uncertain catching of the twine in the
string
to said inlet ends; means movably mounting said
hay; the elimination of the trouble which formerly re
string guides on the machine in a manner permitting
sulted from the wind blowing the wrapping twine out of
movement of said outlet ends toward each other across a
position; more speedy wrapping of the bale; less close
bale
to be wrapped, said outlet ends moving respectively
attention and manual operation by the operator; greater
from
the outer ends of the bale to the center of the bale
simplicity; a more tightly and uniformed wrapped bale;
during wrapping of said strings about t re bale; and means
increased baler capacity; more certain stopping of the
conveyor after wrapping has been started; and, on the 40 for causing said tubes to simultaneously define said move
ment in response to and following movement of said
whole, a baler which will be less troublesome to operate
part to said certain position.
and easier to sell.
4. ln a rotary bailer for rolling material into a cy
From the foregoing description, it is thought to be
lindrical
bale having upper and lower drive rollers spaced
obvious that a rotary baler improvement constructed in
apart to provide a feeding throat, an automatic bale
accordance with my invention is particularly Well adapted
for use, by reason of the convenience and facility with 45 wrapping mechanism having: a feed roller spaced from
the upper drive roller in front of said throat; a pair of
which it may be assembled and operated, and it will also be
swingable twine guides normally disposed at rest above
obvious that my invention is susceptible of some change
the center of said throat with an end of a twine dangling
and modification without departing from the principles
from each; means for the simultaneous swinging move
and spirit thereof, and for this reason I do not wish to
be understood as limiting myself to the precise arrange 50 ment of said twine guides in opposite directions; means
ment and formation of the several parts herein shown in
carrying out my invention in practice, except as claimed.
What is claimed is:
responsive to the growth of the bale to a predetermined
diameter to release said guides to freely swing downwardly
and outwardly into said space between said feed roller
and said upper drive roller for reaching initial wrapping
wrapping means having movable twine guides for the 55 positions adjacent the ends of the bale for dropping said
dangling twine ends on the inmoving material for the
guiding of two twines during automatic wrapping of
initial
wrapping of the bale ends; twine guide driving
said two twines simultaneously about a bale of prede
means; means responsive to the movement of said guides
termined size, said bales having guiding means guiding
to said initial wrapping positions for the operative con
said twines in paths from opposite ends of the bale to
the center thereof lrespectively for wrapping the bale; two 60 nection of said twine guides with said guide driving
means for the return movement of said twine guides to
knives forming a V, one with the other, each knife being
their original central positions for the spiral wrapping of
rigidly secured to the machine adjacent the center of the
said twine on the bale from each end to the center
bale, each edge being in the said path of a different
thereof;
means for disconnecting said guides from said
wrapping twine; a swingable V-shaped guard piece dis
posed above the knives; and means to cause said guard 65 guide driving means; and means for severing the strings
upon the completion of wrapping.
piece to swing into guarding position to prevent the pre
5. In a rotary baling machine having a part movable
mature cutting of the string; and means for causing the
to a certain position responsive to the growth of a bale
removal for said guard to permit the twines to contact
of material to a predetermined size, the following: at
the knives for the simultaneous severing of both strings 70 least
two string guides having outlet ends and having nor
when the twines have reached approximately the center
mal rest positions; means mounting said guides on said
of said bale at the completion of wrapping.
machine in a manner for movement of each of said out
2. ln a rotary bailer having a bale-forming mechanism
let ends across a bale to be wrapped in two opposite di
adapted to form a cylindrical bale by gradually increas
rections generally parallel to the axis of the bale; means
ing its diameter: movable twine guides for wrapping the 75 for causing said guides each respectively to define said
1. In a rotary baler of the type described: a twine
3,064,556
15
movement in one direction in response to movement of
lâ
from the ends to the center thereof; automatic means
said part to said certain position; actuatable means for
causing said guides to each move back across said bale
in the respective opposite direction; means responsive to
for disengagement of the wrappingV mechanism from said
driving part and seating of the mechanism in its original
position of rest when the wrapping is completed; and
point for actuating said actuatable means; releasable lock
return trip of said tubes adjacent the longitudinal center
of said bale.
7. The rotary baling machine of claim 6 in which said
severing means comprises: two knives having edges form
movement of said guides in said one direction to a certain (CW `means for simultaneously severing the strings on said
means for maintaining said actuatable means in operation
until said guides have returned to their said normal posi
tions; and trip means for releasing said lock means when
said guides have reached their normal positions.
6. In a rotary baling machine of the type described
having a driving movable part and a horizontally elon
-ing a V one with the other, said knives being rigidly se
cured to the baler adjacent the horizontal Vcenter 'of the
said feeding throat, each of said edges being in the trans
verse path of a different Wrapping twine; a swingable V
gated feeding throat receiving in-going hay: an automatic
Shaped gua-rd piece disposed abovegthe knives; and means
bale wrapping mechanism defining at times a cylindrical
to
cause said guard piece to swingïinto guarding position
15
bale wrapping area disposed inwardly of and adjacent to
said throat and said bale wrapping area having a horizon
tal axis, said automatic bale wrapping mechanism having
two twine guiding tubes swingably mounted adjacent their
upper ends on a frame member of the machine at posi
tions above the sides of the feeding throat; means nor
mally maintaining the free ends of said tubes at rest and
seated above approximately the longitudinal center of
the throat with ends of the twine dangling from the free
end of each tube and further connecting said two tubes
for simultaneous swinging movement of both of said tubes
in planes parallel to said axis in opposite directions;
means automatically responsive to the diametrical growth
of the bale to a predetermined diameter to release said
to prevent the premature cutting of the string; and means
responsive to the seating of said guidesV for causing the
removal of said guard to permit the twines to contact
the knife edges for the simultaneous severing of both
strings when the twines have reached approximately the
center of said bale at the completion of ‘wrapping.`
8. In a lrotary baler having a moving part means: two
string guides having outlet ends, means movably mount
ing said string guides on said baler for permitting the
outlet ends of said guides to move across a bale in op
posite directions for the spiral wrapping of said bale each
from a different end of the bale toward its center, and
Ameans operably connected to said moving part means and
Vdrivably connected to said string guides for so moving
tubes for the ends to freely swing outwardly and down
wardly to outer positions at the outer sides of the feed 30 said guides simultaneously.
ing throat adjacent the ends of the bale dropping the
References Cited in theñle of this patent
dangling ends of the strings on the in-going hay for the
UNITED STATES PATENTS
initial wrapping of the bale; means automatically respon
810,521
Cagle _______________ .__ Ian. 23, 1906
sive to the reaching of said outer positions by said tubes
Harrer et al ___________ __ Oct. 29, 1946
for causing immediate operable engagement of the wrap 3 Ut 2,410,159
ping mechanism with ’said driving part of the machine
FOREIGN PATENTS
for the return of the twine guiding tubes to their origi
41,392
Germany
____________ __ Oct. 27, 1887
nal upper positions for the spiral wrapping of the bale
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