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Патент USA US2135382

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Nçv. 1, 1938.
l c. F. rsLooMl '
ROD WEEDER
Filed sept. 29, 1957
2,135,382 '
Nov. 1 , 1938. _
c. F. BLo'oM I
2,135,382
ROD WEEDER
Filed Sept. 29, 1957
ILLLlkt
mm.
Z Sheets-Shea?I 2
Patented Nov. 1, 1938
4 2,135,382
?
»UNITED STATES
‘
REISSUED
PATENT OFFICE
2,135,382
ROD WEEDER
Charles F. Bloom, Vancouver, Wash.
Application September 29, 1937, Serial No. 166,401
8 Claims.
My invention relates to rod Weeders, and is par- -
ticularly related to the mechanism for driving the
rod.
The primary object of the invention is to encase
all driving parts within housings that will not
gather foreign matter such as Weeds, etc., while
the machine is in operation.
S
Another object of the invention is to eliminate
` universal joints and moving parts that would be
exposed to the dirt and dust associated with the
operation of the machine.
A further object of the invention is to encase all
working parts wthin a grease filled housing.
And a still further object of the invention is to
permit free and independent movement of the
2 secured underneath and rigidly thereto. A
weeder rod 3 is journaled within the shoes 3A, and
end of the shaft 6 by cap screw IIIA. The‘hous
ing 8 is mounted to the frame I indirectly through
the upright bar I I. The bar I I contacts the roll
ers I2, I3, I4, I5 and I6, said rollers hold the bar
il in a vertical position and permit the bar to
work freely up and down between said rollers.
The operation of the bar between these rollers is
an important feature of this invention as I have ’
found that the free operation vertically of the
machine.
In the operation of rod weeders a great deal
driving wheel vdepends upon free movement of
the bar Ii within the above described guide
rollers.
of foreign matter, such as weeds, dirt, vines, and
.
bearing surfaces 3B provide bearings within the
shoes 3A. A floating drive wheel 4 having a spin
dle 6 secured to the Wheel by flange 'I is mounted oi
to the housing 8 within bearings 9 and retained
thereto by the flange Iû, which is secured to the
driving mechanism relative to the frame of the
O dust are encountered and it has been my experi
ence that machines having open parts, as chains
Referring to Figure 8, the rollers I5 and I6 are so positioned as to take the backward strain of
foreign matter, therefore I have employed a flex
ible cable drive from a driving mechanism entirely
encased, so that no foreign matter will be tangled
the driving wheel Il when the frame is moved
towards the left. The shoulders ISA and I'I that
support the spindles of the rollers I2 and I4 pro
vide a .guide for the bar II in the opposite direc 25
therein.
tion as there are no strain or stress in this direc
and gears, give a great deal of trouble due to this
.
.
rEhe cable is so arranged in connection with my
mechanism that weeds andvines, due to the di
rection of rotation and weave of the cable will
O not become entangled thereabout.
I have also
found that the driving mechanism for driving the
rod should work independent and freely of the
frame of the machine, so that uneven surfaces
will not affect the depth of the rod.
In my new and improved rod weeder I find that
placing the transit wheels behind the frame of th
machine is most desirable.
'
Referring to the drawings:
Figure 1 is a fragmentary plan view of my new
and improved drive for rod Weeders.
Figure 2 is a front sectional view, taken on line
2_2 of Figure 1.
Figure 3 is an end sectional view taken on line
3_3 of Figure 1, looking in the direction indi
cated, parts broken away for convenience of illus
tration.
'
Figure 4 is a plan view of another preferred
form of embodiment of a drive Wheel hook-up.
Figure 5 is a fragmentary front View of the
C drive wheel mechanism shown in Figure 4.
Figure 6 is a detail view, partially in section,
illustrating how the cable floats within the drive
gear.
Cl
(Cl. 97-42)
In the drawings:
I is the frame of the Weeder having goose-necks
tion. A beveled ‘driving gear I8 is fixedly se
cured to the shaft or spindle Ii and drives the
driven beveled gear i9, having hub 20 freely re
volving within the bearing 20A. 'I'he cable 2I is
ñxedly secured within the housing 20 at its one
end and is securely mounted to the rod 3 at 22.
The cable 2l therefore provides a flexible drive
between the rod 3 and the gear I9.
In the operation of this drive as the drive Wheel 35
4 contacts uneven surfaces it is permitted to
work up and down freely with reference to the
frame of the weeder driving the rod 3 through the
gears I8, I9 and'ilexible shaft 2|.. All gears run
within a closed housing 8 within a bath of oil.
It will be noted that the housing 8 is protected
by the rim 4A of the driving Wheel 4 thus prevent
ing the entanglement of foreign matter about
this mechanism. In operation this is a very im
45
nortant feature.
Referring to Figure 4, I show the upright bar
I I connected to the main frame I by four par
allel connecting links 26 permitting the wheel 4
to float up and down over uneven surfaces rela
tive to- the Weeder. These parallel bars are an
chored to theframe I by the adjustable brackets
25 secured to the frame by fastening bolts 2l.
These brackets are adjustable relative to the
frame. One end of the parallel bars is pivotally
mounted to the brackets 25 at 28, suitable shoul 55
2
2,135,382
der spacers being used to permit free movement
of the bars. 'I'he opposite end of the parallel
bars is pivotally mounted to the upright bar ||
at 29 VVand are clamped thereto with shoulder
spacersfpermitting free movement of' the bars.
Y Thisrparallelbanmovement is a Well known prin
ground wheel having an annular rim, a housing
supported Within the rim, gearing arranged in
said housing, and a flexible drive element hav
ing limited longitudinal play with respect to one
of the gears and extended beyond the gears for
connection to aweeder rod.
4. A rod Weeder including a frame, a weeder~
ciple which I have adapted to my drive Wheel in
connection with my rod weeder.
Referring to Figure 6, the gear I9 which drives
10 the cable 2|Vhas a hub 20. The end of the cable
rod mounted for rotation in the frame, a ground
wheel including an axle,`a housing, supported on
2| terminates in a, square nut 30 which floats in
by the axle, a ñexible shaft connected to one of
the space 3| Within the hub 20 providing for free
said gearing .andV extending through and con
iloating action of the drive cable 2|, when the
nected to the weeder rod, and members extend
ing from the housing and connected with the
frame to permit limited free vertical movement
of the 'ground wheel with respect to the frame.
’ parallel bars work up and down over the ground
surfaces. `A retaining- washer or cap 32 pre
vents the nut 30 from coming out of the hub 20,
this cap is held in place by cap screws 33. Sup
the axle, gearing Within `the housing and driven
5. A rod We'eder including a frame, a Weeder
porting wheels for' supporting the rod vWeeder rod mounted for rotation in the frame, a ground
may be used for certain type of Work, I haveY wheel including an axle, a housing supported on
shown their'. relative positions by dotted lines.
4 the axle, gearing within the housing and driven
I do not wish to be limited to this particular by the axle, a flexible shaft connected’for limited
form >ofembodiment as other mechanical com
free longitudinal play» to oneof said gearing and
binations could be used stillY coming Within the
extending through andV connected to the weeder
scope of the claims to follow.
rod,
and members extending from the housing
What is claimedto be new is:
1. A rod we`eder including a'frame, a weeding and connected with the frame to permit limited
lrod mounted for rotation in the frame, a ground free vertical movement of theground wheel with
- >
supporting Wheel, a connection between the respect to the frame. v, ~
6. A construction as defined inclaim 4, Where
wheel and frame permitting relatively free ver
tical play` of the wheel relative to the frame, and in the members include _a vertical bar and a
weeder -rod driving means actuated by a ground housing on the frame through which the barv is
wheel and vconnected to the 'weeder rod, said arranged to slide, and'rneans within the frame
driving means including an appropriate Ylength housing for guiding the bar during and reducing
v
»
of flexible shafting, said ilexible shafting having the friction of Vits movement.
7. A construction as d_eñned in claim 4, where
limited free longitudinal play with respect to the
in the members include a bar connected to the
wheel driving mechanism:
`2. A rod weeder including a frame, a. weeding housing, a second housing connected .to the
rod rotatably mounted in the frame, a ground
wheel for the frame, a connection intermediate
40 thewheel and frame to permit relative vertical
play of the wheel with respect to _the frame, gear
ing operated Vby aground Wheel, and a flexible
shaft operatedby theYV gearing and connected to
the weeder rod, the flexible shaft being mounted
,for limited free longitudinal play with respect to
the gearing.
3. A Weeder rod driving means including a
'n .
frame through which latter housing the bar ex
tends, rollers in the second housing for guiding ,
the bar in movement, >and vmeans in the second „
housing for preventing tilting ofthe bar.
8. A construction as deñnedin cla-im 4, where
in the members include bars arranged in par
allel pairs connected at one end for' pivotal move
ment to the housing and at the opposite end for „
pivotal movement to the frame.
_
CHARLES F. BLOOM.
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